License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 14:07:57 +00:00
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// SPDX-License-Identifier: GPL-2.0
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2010-07-15 02:46:30 +00:00
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/*
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* sysfs.c - ACPI sysfs interface to userspace.
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*/
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2017-08-10 23:31:54 +00:00
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#define pr_fmt(fmt) "ACPI: " fmt
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2010-07-15 02:46:30 +00:00
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/moduleparam.h>
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2013-12-03 00:49:16 +00:00
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#include <linux/acpi.h>
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2010-07-15 02:46:30 +00:00
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2013-03-03 22:08:16 +00:00
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#include "internal.h"
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2010-07-15 02:46:30 +00:00
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#ifdef CONFIG_ACPI_DEBUG
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/*
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* ACPI debug sysfs I/F, including:
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* /sys/modules/acpi/parameters/debug_layer
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* /sys/modules/acpi/parameters/debug_level
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* /sys/modules/acpi/parameters/trace_method_name
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* /sys/modules/acpi/parameters/trace_state
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* /sys/modules/acpi/parameters/trace_debug_layer
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* /sys/modules/acpi/parameters/trace_debug_level
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*/
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struct acpi_dlayer {
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const char *name;
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unsigned long value;
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};
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struct acpi_dlevel {
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const char *name;
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unsigned long value;
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};
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#define ACPI_DEBUG_INIT(v) { .name = #v, .value = v }
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static const struct acpi_dlayer acpi_debug_layers[] = {
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ACPI_DEBUG_INIT(ACPI_UTILITIES),
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ACPI_DEBUG_INIT(ACPI_HARDWARE),
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ACPI_DEBUG_INIT(ACPI_EVENTS),
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ACPI_DEBUG_INIT(ACPI_TABLES),
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ACPI_DEBUG_INIT(ACPI_NAMESPACE),
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ACPI_DEBUG_INIT(ACPI_PARSER),
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ACPI_DEBUG_INIT(ACPI_DISPATCHER),
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ACPI_DEBUG_INIT(ACPI_EXECUTER),
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ACPI_DEBUG_INIT(ACPI_RESOURCES),
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ACPI_DEBUG_INIT(ACPI_CA_DEBUGGER),
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ACPI_DEBUG_INIT(ACPI_OS_SERVICES),
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ACPI_DEBUG_INIT(ACPI_CA_DISASSEMBLER),
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ACPI_DEBUG_INIT(ACPI_COMPILER),
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ACPI_DEBUG_INIT(ACPI_TOOLS),
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};
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static const struct acpi_dlevel acpi_debug_levels[] = {
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ACPI_DEBUG_INIT(ACPI_LV_INIT),
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ACPI_DEBUG_INIT(ACPI_LV_DEBUG_OBJECT),
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ACPI_DEBUG_INIT(ACPI_LV_INFO),
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2015-08-05 08:23:43 +00:00
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ACPI_DEBUG_INIT(ACPI_LV_REPAIR),
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2015-08-05 08:23:51 +00:00
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ACPI_DEBUG_INIT(ACPI_LV_TRACE_POINT),
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2010-07-15 02:46:30 +00:00
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ACPI_DEBUG_INIT(ACPI_LV_INIT_NAMES),
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ACPI_DEBUG_INIT(ACPI_LV_PARSE),
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ACPI_DEBUG_INIT(ACPI_LV_LOAD),
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ACPI_DEBUG_INIT(ACPI_LV_DISPATCH),
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ACPI_DEBUG_INIT(ACPI_LV_EXEC),
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ACPI_DEBUG_INIT(ACPI_LV_NAMES),
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ACPI_DEBUG_INIT(ACPI_LV_OPREGION),
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ACPI_DEBUG_INIT(ACPI_LV_BFIELD),
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ACPI_DEBUG_INIT(ACPI_LV_TABLES),
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ACPI_DEBUG_INIT(ACPI_LV_VALUES),
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ACPI_DEBUG_INIT(ACPI_LV_OBJECTS),
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ACPI_DEBUG_INIT(ACPI_LV_RESOURCES),
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ACPI_DEBUG_INIT(ACPI_LV_USER_REQUESTS),
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ACPI_DEBUG_INIT(ACPI_LV_PACKAGE),
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ACPI_DEBUG_INIT(ACPI_LV_ALLOCATIONS),
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ACPI_DEBUG_INIT(ACPI_LV_FUNCTIONS),
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ACPI_DEBUG_INIT(ACPI_LV_OPTIMIZATIONS),
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ACPI_DEBUG_INIT(ACPI_LV_MUTEX),
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ACPI_DEBUG_INIT(ACPI_LV_THREADS),
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ACPI_DEBUG_INIT(ACPI_LV_IO),
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ACPI_DEBUG_INIT(ACPI_LV_INTERRUPTS),
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ACPI_DEBUG_INIT(ACPI_LV_AML_DISASSEMBLE),
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ACPI_DEBUG_INIT(ACPI_LV_VERBOSE_INFO),
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ACPI_DEBUG_INIT(ACPI_LV_FULL_TABLES),
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ACPI_DEBUG_INIT(ACPI_LV_EVENTS),
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};
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2010-08-30 06:08:02 +00:00
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static int param_get_debug_layer(char *buffer, const struct kernel_param *kp)
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2010-07-15 02:46:30 +00:00
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{
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int result = 0;
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int i;
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result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
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for (i = 0; i < ARRAY_SIZE(acpi_debug_layers); i++) {
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result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
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acpi_debug_layers[i].name,
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acpi_debug_layers[i].value,
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(acpi_dbg_layer & acpi_debug_layers[i].value)
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? '*' : ' ');
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}
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result +=
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sprintf(buffer + result, "%-25s\t0x%08X [%c]\n", "ACPI_ALL_DRIVERS",
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ACPI_ALL_DRIVERS,
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(acpi_dbg_layer & ACPI_ALL_DRIVERS) ==
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ACPI_ALL_DRIVERS ? '*' : (acpi_dbg_layer & ACPI_ALL_DRIVERS)
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== 0 ? ' ' : '-');
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result +=
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sprintf(buffer + result,
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"--\ndebug_layer = 0x%08X ( * = enabled)\n",
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acpi_dbg_layer);
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return result;
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}
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2010-08-30 06:08:02 +00:00
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static int param_get_debug_level(char *buffer, const struct kernel_param *kp)
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2010-07-15 02:46:30 +00:00
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{
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int result = 0;
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int i;
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result = sprintf(buffer, "%-25s\tHex SET\n", "Description");
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for (i = 0; i < ARRAY_SIZE(acpi_debug_levels); i++) {
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result += sprintf(buffer + result, "%-25s\t0x%08lX [%c]\n",
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acpi_debug_levels[i].name,
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acpi_debug_levels[i].value,
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(acpi_dbg_level & acpi_debug_levels[i].value)
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? '*' : ' ');
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}
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result +=
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sprintf(buffer + result, "--\ndebug_level = 0x%08X (* = enabled)\n",
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acpi_dbg_level);
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return result;
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}
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2011-06-25 17:07:52 +00:00
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static const struct kernel_param_ops param_ops_debug_layer = {
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2010-08-30 06:08:02 +00:00
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.set = param_set_uint,
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.get = param_get_debug_layer,
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};
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2011-06-25 17:07:52 +00:00
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static const struct kernel_param_ops param_ops_debug_level = {
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2010-08-30 06:08:02 +00:00
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.set = param_set_uint,
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.get = param_get_debug_level,
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};
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module_param_cb(debug_layer, ¶m_ops_debug_layer, &acpi_dbg_layer, 0644);
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module_param_cb(debug_level, ¶m_ops_debug_level, &acpi_dbg_level, 0644);
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2010-07-15 02:46:30 +00:00
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2015-08-05 08:23:57 +00:00
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static char trace_method_name[1024];
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2010-07-15 02:46:30 +00:00
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2017-10-02 14:40:33 +00:00
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static int param_set_trace_method_name(const char *val,
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const struct kernel_param *kp)
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2010-07-15 02:46:30 +00:00
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{
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2015-08-05 08:23:51 +00:00
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u32 saved_flags = 0;
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2015-08-05 08:23:57 +00:00
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bool is_abs_path = true;
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2010-07-15 02:46:30 +00:00
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2015-08-05 08:23:57 +00:00
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if (*val != '\\')
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is_abs_path = false;
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if ((is_abs_path && strlen(val) > 1023) ||
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(!is_abs_path && strlen(val) > 1022)) {
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2015-08-05 08:23:51 +00:00
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pr_err("%s: string parameter too long\n", kp->name);
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return -ENOSPC;
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2010-07-15 02:46:30 +00:00
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}
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2015-08-05 08:23:51 +00:00
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/*
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* It's not safe to update acpi_gbl_trace_method_name without
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* having the tracer stopped, so we save the original tracer
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* state and disable it.
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*/
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saved_flags = acpi_gbl_trace_flags;
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(void)acpi_debug_trace(NULL,
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acpi_gbl_trace_dbg_level,
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acpi_gbl_trace_dbg_layer,
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0);
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/* This is a hack. We can't kmalloc in early boot. */
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2015-08-05 08:23:57 +00:00
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if (is_abs_path)
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strcpy(trace_method_name, val);
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else {
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trace_method_name[0] = '\\';
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strcpy(trace_method_name+1, val);
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}
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2015-08-05 08:23:51 +00:00
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/* Restore the original tracer state */
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(void)acpi_debug_trace(trace_method_name,
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acpi_gbl_trace_dbg_level,
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acpi_gbl_trace_dbg_layer,
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saved_flags);
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2010-07-15 02:46:30 +00:00
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2015-08-05 08:23:51 +00:00
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return 0;
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}
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2010-07-15 02:46:30 +00:00
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2015-08-05 08:23:51 +00:00
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static int param_get_trace_method_name(char *buffer, const struct kernel_param *kp)
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{
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2020-06-16 09:14:09 +00:00
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return scnprintf(buffer, PAGE_SIZE, "%s\n", acpi_gbl_trace_method_name);
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2015-08-05 08:23:51 +00:00
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}
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static const struct kernel_param_ops param_ops_trace_method = {
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.set = param_set_trace_method_name,
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.get = param_get_trace_method_name,
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};
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static const struct kernel_param_ops param_ops_trace_attrib = {
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.set = param_set_uint,
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.get = param_get_uint,
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};
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module_param_cb(trace_method_name, ¶m_ops_trace_method, &trace_method_name, 0644);
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module_param_cb(trace_debug_layer, ¶m_ops_trace_attrib, &acpi_gbl_trace_dbg_layer, 0644);
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module_param_cb(trace_debug_level, ¶m_ops_trace_attrib, &acpi_gbl_trace_dbg_level, 0644);
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treewide: Fix function prototypes for module_param_call()
Several function prototypes for the set/get functions defined by
module_param_call() have a slightly wrong argument types. This fixes
those in an effort to clean up the calls when running under type-enforced
compiler instrumentation for CFI. This is the result of running the
following semantic patch:
@match_module_param_call_function@
declarer name module_param_call;
identifier _name, _set_func, _get_func;
expression _arg, _mode;
@@
module_param_call(_name, _set_func, _get_func, _arg, _mode);
@fix_set_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._set_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _set_func(
-_val_type _val
+const char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
@fix_get_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._get_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _get_func(
-_val_type _val
+char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
Two additional by-hand changes are included for places where the above
Coccinelle script didn't notice them:
drivers/platform/x86/thinkpad_acpi.c
fs/lockd/svc.c
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
2017-10-18 02:04:42 +00:00
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static int param_set_trace_state(const char *val,
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const struct kernel_param *kp)
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2015-08-05 08:23:51 +00:00
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{
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acpi_status status;
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const char *method = trace_method_name;
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u32 flags = 0;
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|
|
/* So "xxx-once" comparison should go prior than "xxx" comparison */
|
|
|
|
#define acpi_compare_param(val, key) \
|
|
|
|
strncmp((val), (key), sizeof(key) - 1)
|
|
|
|
|
|
|
|
if (!acpi_compare_param(val, "enable")) {
|
|
|
|
method = NULL;
|
|
|
|
flags = ACPI_TRACE_ENABLED;
|
|
|
|
} else if (!acpi_compare_param(val, "disable"))
|
|
|
|
method = NULL;
|
|
|
|
else if (!acpi_compare_param(val, "method-once"))
|
|
|
|
flags = ACPI_TRACE_ENABLED | ACPI_TRACE_ONESHOT;
|
|
|
|
else if (!acpi_compare_param(val, "method"))
|
|
|
|
flags = ACPI_TRACE_ENABLED;
|
|
|
|
else if (!acpi_compare_param(val, "opcode-once"))
|
|
|
|
flags = ACPI_TRACE_ENABLED | ACPI_TRACE_ONESHOT | ACPI_TRACE_OPCODE;
|
|
|
|
else if (!acpi_compare_param(val, "opcode"))
|
|
|
|
flags = ACPI_TRACE_ENABLED | ACPI_TRACE_OPCODE;
|
|
|
|
else
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
status = acpi_debug_trace(method,
|
|
|
|
acpi_gbl_trace_dbg_level,
|
|
|
|
acpi_gbl_trace_dbg_layer,
|
|
|
|
flags);
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return -EBUSY;
|
|
|
|
|
|
|
|
return 0;
|
2010-07-15 02:46:30 +00:00
|
|
|
}
|
|
|
|
|
treewide: Fix function prototypes for module_param_call()
Several function prototypes for the set/get functions defined by
module_param_call() have a slightly wrong argument types. This fixes
those in an effort to clean up the calls when running under type-enforced
compiler instrumentation for CFI. This is the result of running the
following semantic patch:
@match_module_param_call_function@
declarer name module_param_call;
identifier _name, _set_func, _get_func;
expression _arg, _mode;
@@
module_param_call(_name, _set_func, _get_func, _arg, _mode);
@fix_set_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._set_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _set_func(
-_val_type _val
+const char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
@fix_get_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._get_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _get_func(
-_val_type _val
+char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
Two additional by-hand changes are included for places where the above
Coccinelle script didn't notice them:
drivers/platform/x86/thinkpad_acpi.c
fs/lockd/svc.c
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
2017-10-18 02:04:42 +00:00
|
|
|
static int param_get_trace_state(char *buffer, const struct kernel_param *kp)
|
2010-07-15 02:46:30 +00:00
|
|
|
{
|
2015-08-05 08:23:51 +00:00
|
|
|
if (!(acpi_gbl_trace_flags & ACPI_TRACE_ENABLED))
|
2020-06-16 09:14:09 +00:00
|
|
|
return sprintf(buffer, "disable\n");
|
2010-07-15 02:46:30 +00:00
|
|
|
else {
|
2015-08-05 08:23:51 +00:00
|
|
|
if (acpi_gbl_trace_method_name) {
|
|
|
|
if (acpi_gbl_trace_flags & ACPI_TRACE_ONESHOT)
|
2020-06-16 09:14:09 +00:00
|
|
|
return sprintf(buffer, "method-once\n");
|
2015-08-05 08:23:51 +00:00
|
|
|
else
|
2020-06-16 09:14:09 +00:00
|
|
|
return sprintf(buffer, "method\n");
|
2015-08-05 08:23:51 +00:00
|
|
|
} else
|
2020-06-16 09:14:09 +00:00
|
|
|
return sprintf(buffer, "enable\n");
|
2010-07-15 02:46:30 +00:00
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
module_param_call(trace_state, param_set_trace_state, param_get_trace_state,
|
|
|
|
NULL, 0644);
|
|
|
|
#endif /* CONFIG_ACPI_DEBUG */
|
|
|
|
|
2011-05-26 10:26:23 +00:00
|
|
|
|
|
|
|
/* /sys/modules/acpi/parameters/aml_debug_output */
|
|
|
|
|
|
|
|
module_param_named(aml_debug_output, acpi_gbl_enable_aml_debug_object,
|
2014-01-24 00:49:51 +00:00
|
|
|
byte, 0644);
|
2011-05-26 10:26:23 +00:00
|
|
|
MODULE_PARM_DESC(aml_debug_output,
|
|
|
|
"To enable/disable the ACPI Debug Object output.");
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
/* /sys/module/acpi/parameters/acpica_version */
|
treewide: Fix function prototypes for module_param_call()
Several function prototypes for the set/get functions defined by
module_param_call() have a slightly wrong argument types. This fixes
those in an effort to clean up the calls when running under type-enforced
compiler instrumentation for CFI. This is the result of running the
following semantic patch:
@match_module_param_call_function@
declarer name module_param_call;
identifier _name, _set_func, _get_func;
expression _arg, _mode;
@@
module_param_call(_name, _set_func, _get_func, _arg, _mode);
@fix_set_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._set_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _set_func(
-_val_type _val
+const char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
@fix_get_prototype
depends on match_module_param_call_function@
identifier match_module_param_call_function._get_func;
identifier _val, _param;
type _val_type, _param_type;
@@
int _get_func(
-_val_type _val
+char * _val
,
-_param_type _param
+const struct kernel_param * _param
) { ... }
Two additional by-hand changes are included for places where the above
Coccinelle script didn't notice them:
drivers/platform/x86/thinkpad_acpi.c
fs/lockd/svc.c
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
2017-10-18 02:04:42 +00:00
|
|
|
static int param_get_acpica_version(char *buffer,
|
|
|
|
const struct kernel_param *kp)
|
2010-07-15 02:46:30 +00:00
|
|
|
{
|
|
|
|
int result;
|
|
|
|
|
2020-06-16 09:14:09 +00:00
|
|
|
result = sprintf(buffer, "%x\n", ACPI_CA_VERSION);
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
return result;
|
|
|
|
}
|
|
|
|
|
|
|
|
module_param_call(acpica_version, NULL, param_get_acpica_version, NULL, 0444);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* ACPI table sysfs I/F:
|
|
|
|
* /sys/firmware/acpi/tables/
|
2017-08-18 23:19:00 +00:00
|
|
|
* /sys/firmware/acpi/tables/data/
|
2010-07-15 02:46:30 +00:00
|
|
|
* /sys/firmware/acpi/tables/dynamic/
|
|
|
|
*/
|
|
|
|
|
|
|
|
static LIST_HEAD(acpi_table_attr_list);
|
|
|
|
static struct kobject *tables_kobj;
|
2017-08-18 23:19:00 +00:00
|
|
|
static struct kobject *tables_data_kobj;
|
2010-07-15 02:46:30 +00:00
|
|
|
static struct kobject *dynamic_tables_kobj;
|
2013-03-03 22:08:16 +00:00
|
|
|
static struct kobject *hotplug_kobj;
|
2010-07-15 02:46:30 +00:00
|
|
|
|
2016-09-13 09:48:34 +00:00
|
|
|
#define ACPI_MAX_TABLE_INSTANCES 999
|
|
|
|
#define ACPI_INST_SIZE 4 /* including trailing 0 */
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
struct acpi_table_attr {
|
|
|
|
struct bin_attribute attr;
|
2019-04-08 20:42:25 +00:00
|
|
|
char name[ACPI_NAMESEG_SIZE];
|
2010-07-15 02:46:30 +00:00
|
|
|
int instance;
|
2019-04-08 20:42:25 +00:00
|
|
|
char filename[ACPI_NAMESEG_SIZE+ACPI_INST_SIZE];
|
2010-07-15 02:46:30 +00:00
|
|
|
struct list_head node;
|
|
|
|
};
|
|
|
|
|
2017-08-18 23:19:00 +00:00
|
|
|
struct acpi_data_attr {
|
|
|
|
struct bin_attribute attr;
|
|
|
|
u64 addr;
|
|
|
|
};
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
static ssize_t acpi_table_show(struct file *filp, struct kobject *kobj,
|
|
|
|
struct bin_attribute *bin_attr, char *buf,
|
|
|
|
loff_t offset, size_t count)
|
|
|
|
{
|
|
|
|
struct acpi_table_attr *table_attr =
|
|
|
|
container_of(bin_attr, struct acpi_table_attr, attr);
|
|
|
|
struct acpi_table_header *table_header = NULL;
|
|
|
|
acpi_status status;
|
2017-04-25 19:58:31 +00:00
|
|
|
ssize_t rc;
|
2010-07-15 02:46:30 +00:00
|
|
|
|
2016-09-13 09:48:34 +00:00
|
|
|
status = acpi_get_table(table_attr->name, table_attr->instance,
|
|
|
|
&table_header);
|
2010-07-15 02:46:30 +00:00
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return -ENODEV;
|
|
|
|
|
2017-04-25 19:58:31 +00:00
|
|
|
rc = memory_read_from_buffer(buf, count, &offset, table_header,
|
|
|
|
table_header->length);
|
|
|
|
acpi_put_table(table_header);
|
|
|
|
return rc;
|
2010-07-15 02:46:30 +00:00
|
|
|
}
|
|
|
|
|
2016-09-13 09:48:34 +00:00
|
|
|
static int acpi_table_attr_init(struct kobject *tables_obj,
|
|
|
|
struct acpi_table_attr *table_attr,
|
|
|
|
struct acpi_table_header *table_header)
|
2010-07-15 02:46:30 +00:00
|
|
|
{
|
|
|
|
struct acpi_table_header *header = NULL;
|
|
|
|
struct acpi_table_attr *attr = NULL;
|
2016-09-13 09:48:34 +00:00
|
|
|
char instance_str[ACPI_INST_SIZE];
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
sysfs_attr_init(&table_attr->attr.attr);
|
2019-04-08 20:42:24 +00:00
|
|
|
ACPI_COPY_NAMESEG(table_attr->name, table_header->signature);
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
list_for_each_entry(attr, &acpi_table_attr_list, node) {
|
2019-04-08 20:42:24 +00:00
|
|
|
if (ACPI_COMPARE_NAMESEG(table_attr->name, attr->name))
|
2010-07-15 02:46:30 +00:00
|
|
|
if (table_attr->instance < attr->instance)
|
|
|
|
table_attr->instance = attr->instance;
|
|
|
|
}
|
|
|
|
table_attr->instance++;
|
2016-09-13 09:48:34 +00:00
|
|
|
if (table_attr->instance > ACPI_MAX_TABLE_INSTANCES) {
|
|
|
|
pr_warn("%4.4s: too many table instances\n",
|
|
|
|
table_attr->name);
|
|
|
|
return -ERANGE;
|
|
|
|
}
|
2010-07-15 02:46:30 +00:00
|
|
|
|
2019-04-08 20:42:24 +00:00
|
|
|
ACPI_COPY_NAMESEG(table_attr->filename, table_header->signature);
|
2019-04-08 20:42:25 +00:00
|
|
|
table_attr->filename[ACPI_NAMESEG_SIZE] = '\0';
|
2010-07-15 02:46:30 +00:00
|
|
|
if (table_attr->instance > 1 || (table_attr->instance == 1 &&
|
|
|
|
!acpi_get_table
|
2016-09-13 09:48:34 +00:00
|
|
|
(table_header->signature, 2, &header))) {
|
|
|
|
snprintf(instance_str, sizeof(instance_str), "%u",
|
|
|
|
table_attr->instance);
|
|
|
|
strcat(table_attr->filename, instance_str);
|
|
|
|
}
|
2010-07-15 02:46:30 +00:00
|
|
|
|
2013-11-19 08:54:47 +00:00
|
|
|
table_attr->attr.size = table_header->length;
|
2010-07-15 02:46:30 +00:00
|
|
|
table_attr->attr.read = acpi_table_show;
|
2016-09-13 09:48:34 +00:00
|
|
|
table_attr->attr.attr.name = table_attr->filename;
|
2010-07-15 02:46:30 +00:00
|
|
|
table_attr->attr.attr.mode = 0400;
|
|
|
|
|
2016-09-13 09:48:34 +00:00
|
|
|
return sysfs_create_bin_file(tables_obj, &table_attr->attr);
|
2010-07-15 02:46:30 +00:00
|
|
|
}
|
|
|
|
|
2016-07-08 16:13:09 +00:00
|
|
|
acpi_status acpi_sysfs_table_handler(u32 event, void *table, void *context)
|
2010-07-15 02:46:30 +00:00
|
|
|
{
|
|
|
|
struct acpi_table_attr *table_attr;
|
|
|
|
|
|
|
|
switch (event) {
|
ACPI / sysfs: Fix an issue for LoadTable opcode
OEM tables can be installed via RSDT/XSDT, in this case, they have already
been created under /sys/firmware/acpi/tables.
For this kind of tables, normally LoadTable opcode will be executed to load
them. If LoadTable opcode is executed after acpi_sysfs_init(),
acpi_sysfs_table_handler() will be invoked, thus a redundant table file
will be created under /sys/firmware/acpi/tables/dynamic. Then running
"acpidump" on such platform results in an error, complaining blank empty
table (see Link 1 below).
The bug can be reproduced by customizing an OEM1 table, allowing it to be
overridden via 'table_sigs' (drivers/acpi/tables.c), adding the following
code to the customized DSDT to load it:
Name (OEMH, Zero)
Name (OEMF, One)
If (LEqual (OEMF, One)) {
Store (LoadTable ("OEM1", "Intel", "Test"), OEMH)
Store (Zero, OEMF)
}
In order to make sure that the OEM1 table is installed after
acpi_sysfs_init(), acpi_sysfs_init() can be moved before invoking
acpi_load_tables(). Then the following command execution result can be
seen:
# acpidump > acpidump.txt
Could not read table header: /sysfs/firmware/acpi/tables/dynamic/OEM12
Could not get ACPI table at index 17, AE_BAD_HEADER
Link: https://bugzilla.kernel.org/show_bug.cgi?id=150841 # [1]
Link: https://github.com/acpica/acpica/commit/ed6a5fbc
Reported-by: Jason Voelz <jason.voelz@intel.com>
Reported-by: Francisco Leoner <francisco.j.lenoer.soto@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-09-13 09:48:27 +00:00
|
|
|
case ACPI_TABLE_EVENT_INSTALL:
|
2010-07-15 02:46:30 +00:00
|
|
|
table_attr =
|
|
|
|
kzalloc(sizeof(struct acpi_table_attr), GFP_KERNEL);
|
|
|
|
if (!table_attr)
|
|
|
|
return AE_NO_MEMORY;
|
|
|
|
|
2016-09-13 09:48:34 +00:00
|
|
|
if (acpi_table_attr_init(dynamic_tables_kobj,
|
|
|
|
table_attr, table)) {
|
2010-07-15 02:46:30 +00:00
|
|
|
kfree(table_attr);
|
|
|
|
return AE_ERROR;
|
2016-09-13 09:48:34 +00:00
|
|
|
}
|
|
|
|
list_add_tail(&table_attr->node, &acpi_table_attr_list);
|
2010-07-15 02:46:30 +00:00
|
|
|
break;
|
ACPI / sysfs: Fix an issue for LoadTable opcode
OEM tables can be installed via RSDT/XSDT, in this case, they have already
been created under /sys/firmware/acpi/tables.
For this kind of tables, normally LoadTable opcode will be executed to load
them. If LoadTable opcode is executed after acpi_sysfs_init(),
acpi_sysfs_table_handler() will be invoked, thus a redundant table file
will be created under /sys/firmware/acpi/tables/dynamic. Then running
"acpidump" on such platform results in an error, complaining blank empty
table (see Link 1 below).
The bug can be reproduced by customizing an OEM1 table, allowing it to be
overridden via 'table_sigs' (drivers/acpi/tables.c), adding the following
code to the customized DSDT to load it:
Name (OEMH, Zero)
Name (OEMF, One)
If (LEqual (OEMF, One)) {
Store (LoadTable ("OEM1", "Intel", "Test"), OEMH)
Store (Zero, OEMF)
}
In order to make sure that the OEM1 table is installed after
acpi_sysfs_init(), acpi_sysfs_init() can be moved before invoking
acpi_load_tables(). Then the following command execution result can be
seen:
# acpidump > acpidump.txt
Could not read table header: /sysfs/firmware/acpi/tables/dynamic/OEM12
Could not get ACPI table at index 17, AE_BAD_HEADER
Link: https://bugzilla.kernel.org/show_bug.cgi?id=150841 # [1]
Link: https://github.com/acpica/acpica/commit/ed6a5fbc
Reported-by: Jason Voelz <jason.voelz@intel.com>
Reported-by: Francisco Leoner <francisco.j.lenoer.soto@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-09-13 09:48:27 +00:00
|
|
|
case ACPI_TABLE_EVENT_LOAD:
|
2010-07-15 02:46:30 +00:00
|
|
|
case ACPI_TABLE_EVENT_UNLOAD:
|
ACPI / sysfs: Fix an issue for LoadTable opcode
OEM tables can be installed via RSDT/XSDT, in this case, they have already
been created under /sys/firmware/acpi/tables.
For this kind of tables, normally LoadTable opcode will be executed to load
them. If LoadTable opcode is executed after acpi_sysfs_init(),
acpi_sysfs_table_handler() will be invoked, thus a redundant table file
will be created under /sys/firmware/acpi/tables/dynamic. Then running
"acpidump" on such platform results in an error, complaining blank empty
table (see Link 1 below).
The bug can be reproduced by customizing an OEM1 table, allowing it to be
overridden via 'table_sigs' (drivers/acpi/tables.c), adding the following
code to the customized DSDT to load it:
Name (OEMH, Zero)
Name (OEMF, One)
If (LEqual (OEMF, One)) {
Store (LoadTable ("OEM1", "Intel", "Test"), OEMH)
Store (Zero, OEMF)
}
In order to make sure that the OEM1 table is installed after
acpi_sysfs_init(), acpi_sysfs_init() can be moved before invoking
acpi_load_tables(). Then the following command execution result can be
seen:
# acpidump > acpidump.txt
Could not read table header: /sysfs/firmware/acpi/tables/dynamic/OEM12
Could not get ACPI table at index 17, AE_BAD_HEADER
Link: https://bugzilla.kernel.org/show_bug.cgi?id=150841 # [1]
Link: https://github.com/acpica/acpica/commit/ed6a5fbc
Reported-by: Jason Voelz <jason.voelz@intel.com>
Reported-by: Francisco Leoner <francisco.j.lenoer.soto@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-09-13 09:48:27 +00:00
|
|
|
case ACPI_TABLE_EVENT_UNINSTALL:
|
2010-07-15 02:46:30 +00:00
|
|
|
/*
|
|
|
|
* we do not need to do anything right now
|
|
|
|
* because the table is not deleted from the
|
|
|
|
* global table list when unloading it.
|
|
|
|
*/
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return AE_BAD_PARAMETER;
|
|
|
|
}
|
|
|
|
return AE_OK;
|
|
|
|
}
|
|
|
|
|
2017-08-18 23:19:00 +00:00
|
|
|
static ssize_t acpi_data_show(struct file *filp, struct kobject *kobj,
|
|
|
|
struct bin_attribute *bin_attr, char *buf,
|
|
|
|
loff_t offset, size_t count)
|
|
|
|
{
|
|
|
|
struct acpi_data_attr *data_attr;
|
|
|
|
void __iomem *base;
|
|
|
|
ssize_t rc;
|
|
|
|
|
|
|
|
data_attr = container_of(bin_attr, struct acpi_data_attr, attr);
|
|
|
|
|
|
|
|
base = acpi_os_map_memory(data_attr->addr, data_attr->attr.size);
|
|
|
|
if (!base)
|
|
|
|
return -ENOMEM;
|
|
|
|
rc = memory_read_from_buffer(buf, count, &offset, base,
|
|
|
|
data_attr->attr.size);
|
|
|
|
acpi_os_unmap_memory(base, data_attr->attr.size);
|
|
|
|
|
|
|
|
return rc;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int acpi_bert_data_init(void *th, struct acpi_data_attr *data_attr)
|
|
|
|
{
|
|
|
|
struct acpi_table_bert *bert = th;
|
|
|
|
|
|
|
|
if (bert->header.length < sizeof(struct acpi_table_bert) ||
|
|
|
|
bert->region_length < sizeof(struct acpi_hest_generic_status)) {
|
|
|
|
kfree(data_attr);
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
data_attr->addr = bert->address;
|
|
|
|
data_attr->attr.size = bert->region_length;
|
|
|
|
data_attr->attr.attr.name = "BERT";
|
|
|
|
|
|
|
|
return sysfs_create_bin_file(tables_data_kobj, &data_attr->attr);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct acpi_data_obj {
|
|
|
|
char *name;
|
|
|
|
int (*fn)(void *, struct acpi_data_attr *);
|
|
|
|
} acpi_data_objs[] = {
|
|
|
|
{ ACPI_SIG_BERT, acpi_bert_data_init },
|
|
|
|
};
|
|
|
|
|
|
|
|
#define NUM_ACPI_DATA_OBJS ARRAY_SIZE(acpi_data_objs)
|
|
|
|
|
|
|
|
static int acpi_table_data_init(struct acpi_table_header *th)
|
|
|
|
{
|
|
|
|
struct acpi_data_attr *data_attr;
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < NUM_ACPI_DATA_OBJS; i++) {
|
2019-04-08 20:42:24 +00:00
|
|
|
if (ACPI_COMPARE_NAMESEG(th->signature, acpi_data_objs[i].name)) {
|
2017-08-18 23:19:00 +00:00
|
|
|
data_attr = kzalloc(sizeof(*data_attr), GFP_KERNEL);
|
|
|
|
if (!data_attr)
|
|
|
|
return -ENOMEM;
|
|
|
|
sysfs_attr_init(&data_attr->attr.attr);
|
|
|
|
data_attr->attr.read = acpi_data_show;
|
|
|
|
data_attr->attr.attr.mode = 0400;
|
|
|
|
return acpi_data_objs[i].fn(th, data_attr);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
static int acpi_tables_sysfs_init(void)
|
|
|
|
{
|
|
|
|
struct acpi_table_attr *table_attr;
|
|
|
|
struct acpi_table_header *table_header = NULL;
|
2013-11-21 10:20:23 +00:00
|
|
|
int table_index;
|
|
|
|
acpi_status status;
|
|
|
|
int ret;
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
tables_kobj = kobject_create_and_add("tables", acpi_kobj);
|
|
|
|
if (!tables_kobj)
|
|
|
|
goto err;
|
|
|
|
|
2017-08-18 23:19:00 +00:00
|
|
|
tables_data_kobj = kobject_create_and_add("data", tables_kobj);
|
|
|
|
if (!tables_data_kobj)
|
|
|
|
goto err_tables_data;
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
dynamic_tables_kobj = kobject_create_and_add("dynamic", tables_kobj);
|
|
|
|
if (!dynamic_tables_kobj)
|
|
|
|
goto err_dynamic_tables;
|
|
|
|
|
2013-11-21 10:20:23 +00:00
|
|
|
for (table_index = 0;; table_index++) {
|
|
|
|
status = acpi_get_table_by_index(table_index, &table_header);
|
|
|
|
|
|
|
|
if (status == AE_BAD_PARAMETER)
|
|
|
|
break;
|
|
|
|
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
continue;
|
|
|
|
|
|
|
|
table_attr = kzalloc(sizeof(*table_attr), GFP_KERNEL);
|
|
|
|
if (!table_attr)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2016-09-13 09:48:34 +00:00
|
|
|
ret = acpi_table_attr_init(tables_kobj,
|
|
|
|
table_attr, table_header);
|
2013-11-21 10:20:23 +00:00
|
|
|
if (ret) {
|
|
|
|
kfree(table_attr);
|
|
|
|
return ret;
|
2010-07-15 02:46:30 +00:00
|
|
|
}
|
2013-11-21 10:20:23 +00:00
|
|
|
list_add_tail(&table_attr->node, &acpi_table_attr_list);
|
2017-08-18 23:19:00 +00:00
|
|
|
acpi_table_data_init(table_header);
|
2013-11-21 10:20:23 +00:00
|
|
|
}
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
kobject_uevent(tables_kobj, KOBJ_ADD);
|
2017-08-18 23:19:00 +00:00
|
|
|
kobject_uevent(tables_data_kobj, KOBJ_ADD);
|
2010-07-15 02:46:30 +00:00
|
|
|
kobject_uevent(dynamic_tables_kobj, KOBJ_ADD);
|
|
|
|
|
2016-07-08 16:13:09 +00:00
|
|
|
return 0;
|
2010-07-15 02:46:30 +00:00
|
|
|
err_dynamic_tables:
|
2017-08-18 23:19:00 +00:00
|
|
|
kobject_put(tables_data_kobj);
|
|
|
|
err_tables_data:
|
2010-07-15 02:46:30 +00:00
|
|
|
kobject_put(tables_kobj);
|
|
|
|
err:
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Detailed ACPI IRQ counters:
|
|
|
|
* /sys/firmware/acpi/interrupts/
|
|
|
|
*/
|
|
|
|
|
|
|
|
u32 acpi_irq_handled;
|
|
|
|
u32 acpi_irq_not_handled;
|
|
|
|
|
|
|
|
#define COUNT_GPE 0
|
|
|
|
#define COUNT_SCI 1 /* acpi_irq_handled */
|
|
|
|
#define COUNT_SCI_NOT 2 /* acpi_irq_not_handled */
|
|
|
|
#define COUNT_ERROR 3 /* other */
|
|
|
|
#define NUM_COUNTERS_EXTRA 4
|
|
|
|
|
|
|
|
struct event_counter {
|
|
|
|
u32 count;
|
|
|
|
u32 flags;
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct event_counter *all_counters;
|
|
|
|
static u32 num_gpes;
|
|
|
|
static u32 num_counters;
|
|
|
|
static struct attribute **all_attrs;
|
|
|
|
static u32 acpi_gpe_count;
|
|
|
|
|
|
|
|
static struct attribute_group interrupt_stats_attr_group = {
|
|
|
|
.name = "interrupts",
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct kobj_attribute *counter_attrs;
|
|
|
|
|
|
|
|
static void delete_gpe_attr_array(void)
|
|
|
|
{
|
|
|
|
struct event_counter *tmp = all_counters;
|
|
|
|
|
|
|
|
all_counters = NULL;
|
|
|
|
kfree(tmp);
|
|
|
|
|
|
|
|
if (counter_attrs) {
|
|
|
|
int i;
|
|
|
|
|
|
|
|
for (i = 0; i < num_gpes; i++)
|
|
|
|
kfree(counter_attrs[i].attr.name);
|
|
|
|
|
|
|
|
kfree(counter_attrs);
|
|
|
|
}
|
|
|
|
kfree(all_attrs);
|
|
|
|
}
|
|
|
|
|
2010-12-13 05:39:26 +00:00
|
|
|
static void gpe_count(u32 gpe_number)
|
2010-07-15 02:46:30 +00:00
|
|
|
{
|
|
|
|
acpi_gpe_count++;
|
|
|
|
|
|
|
|
if (!all_counters)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (gpe_number < num_gpes)
|
|
|
|
all_counters[gpe_number].count++;
|
|
|
|
else
|
|
|
|
all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
|
|
|
|
COUNT_ERROR].count++;
|
|
|
|
}
|
|
|
|
|
2010-12-13 05:39:26 +00:00
|
|
|
static void fixed_event_count(u32 event_number)
|
2010-07-15 02:46:30 +00:00
|
|
|
{
|
|
|
|
if (!all_counters)
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (event_number < ACPI_NUM_FIXED_EVENTS)
|
|
|
|
all_counters[num_gpes + event_number].count++;
|
|
|
|
else
|
|
|
|
all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS +
|
|
|
|
COUNT_ERROR].count++;
|
|
|
|
}
|
|
|
|
|
2012-10-31 02:25:36 +00:00
|
|
|
static void acpi_global_event_handler(u32 event_type, acpi_handle device,
|
2010-12-13 05:39:26 +00:00
|
|
|
u32 event_number, void *context)
|
|
|
|
{
|
2017-08-10 23:31:54 +00:00
|
|
|
if (event_type == ACPI_EVENT_TYPE_GPE) {
|
2010-12-13 05:39:26 +00:00
|
|
|
gpe_count(event_number);
|
2017-08-10 23:31:54 +00:00
|
|
|
pr_debug("GPE event 0x%02x\n", event_number);
|
|
|
|
} else if (event_type == ACPI_EVENT_TYPE_FIXED) {
|
2010-12-13 05:39:26 +00:00
|
|
|
fixed_event_count(event_number);
|
2017-08-10 23:31:54 +00:00
|
|
|
pr_debug("Fixed event 0x%02x\n", event_number);
|
|
|
|
} else {
|
|
|
|
pr_debug("Other event 0x%02x\n", event_number);
|
|
|
|
}
|
2010-12-13 05:39:26 +00:00
|
|
|
}
|
|
|
|
|
2019-03-12 09:30:29 +00:00
|
|
|
static int get_status(u32 index, acpi_event_status *ret,
|
2010-07-15 02:46:30 +00:00
|
|
|
acpi_handle *handle)
|
|
|
|
{
|
2019-03-12 09:30:29 +00:00
|
|
|
acpi_status status;
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
|
2016-05-05 13:23:04 +00:00
|
|
|
return -EINVAL;
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
if (index < num_gpes) {
|
2019-03-12 09:30:29 +00:00
|
|
|
status = acpi_get_gpe_device(index, handle);
|
|
|
|
if (ACPI_FAILURE(status)) {
|
2021-02-22 18:59:54 +00:00
|
|
|
pr_warn("Invalid GPE 0x%x", index);
|
2019-03-12 09:30:29 +00:00
|
|
|
return -ENXIO;
|
2010-07-15 02:46:30 +00:00
|
|
|
}
|
2019-03-12 09:30:29 +00:00
|
|
|
status = acpi_get_gpe_status(*handle, index, ret);
|
|
|
|
} else {
|
|
|
|
status = acpi_get_event_status(index - num_gpes, ret);
|
|
|
|
}
|
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
return -EIO;
|
2010-07-15 02:46:30 +00:00
|
|
|
|
2019-03-12 09:30:29 +00:00
|
|
|
return 0;
|
2010-07-15 02:46:30 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t counter_show(struct kobject *kobj,
|
|
|
|
struct kobj_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
int index = attr - counter_attrs;
|
|
|
|
int size;
|
|
|
|
acpi_handle handle;
|
|
|
|
acpi_event_status status;
|
|
|
|
int result = 0;
|
|
|
|
|
|
|
|
all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI].count =
|
|
|
|
acpi_irq_handled;
|
|
|
|
all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT].count =
|
|
|
|
acpi_irq_not_handled;
|
|
|
|
all_counters[num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE].count =
|
|
|
|
acpi_gpe_count;
|
2015-03-04 10:48:35 +00:00
|
|
|
size = sprintf(buf, "%8u", all_counters[index].count);
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
/* "gpe_all" or "sci" */
|
|
|
|
if (index >= num_gpes + ACPI_NUM_FIXED_EVENTS)
|
|
|
|
goto end;
|
|
|
|
|
|
|
|
result = get_status(index, &status, &handle);
|
|
|
|
if (result)
|
|
|
|
goto end;
|
|
|
|
|
2016-08-04 08:43:45 +00:00
|
|
|
if (status & ACPI_EVENT_FLAG_ENABLE_SET)
|
|
|
|
size += sprintf(buf + size, " EN");
|
|
|
|
else
|
|
|
|
size += sprintf(buf + size, " ");
|
|
|
|
if (status & ACPI_EVENT_FLAG_STATUS_SET)
|
|
|
|
size += sprintf(buf + size, " STS");
|
|
|
|
else
|
|
|
|
size += sprintf(buf + size, " ");
|
|
|
|
|
2014-10-10 02:40:05 +00:00
|
|
|
if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER))
|
2016-08-04 08:43:45 +00:00
|
|
|
size += sprintf(buf + size, " invalid ");
|
2010-07-15 02:46:30 +00:00
|
|
|
else if (status & ACPI_EVENT_FLAG_ENABLED)
|
2016-08-04 08:43:45 +00:00
|
|
|
size += sprintf(buf + size, " enabled ");
|
2010-07-15 02:46:30 +00:00
|
|
|
else if (status & ACPI_EVENT_FLAG_WAKE_ENABLED)
|
2016-08-04 08:43:45 +00:00
|
|
|
size += sprintf(buf + size, " wake_enabled");
|
2010-07-15 02:46:30 +00:00
|
|
|
else
|
2016-08-04 08:43:45 +00:00
|
|
|
size += sprintf(buf + size, " disabled ");
|
|
|
|
if (status & ACPI_EVENT_FLAG_MASKED)
|
|
|
|
size += sprintf(buf + size, " masked ");
|
|
|
|
else
|
|
|
|
size += sprintf(buf + size, " unmasked");
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
end:
|
|
|
|
size += sprintf(buf + size, "\n");
|
|
|
|
return result ? result : size;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* counter_set() sets the specified counter.
|
|
|
|
* setting the total "sci" file to any value clears all counters.
|
|
|
|
* enable/disable/clear a gpe/fixed event in user space.
|
|
|
|
*/
|
|
|
|
static ssize_t counter_set(struct kobject *kobj,
|
|
|
|
struct kobj_attribute *attr, const char *buf,
|
|
|
|
size_t size)
|
|
|
|
{
|
|
|
|
int index = attr - counter_attrs;
|
|
|
|
acpi_event_status status;
|
|
|
|
acpi_handle handle;
|
|
|
|
int result = 0;
|
2013-09-12 07:32:05 +00:00
|
|
|
unsigned long tmp;
|
2010-07-15 02:46:30 +00:00
|
|
|
|
|
|
|
if (index == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI) {
|
|
|
|
int i;
|
|
|
|
for (i = 0; i < num_counters; ++i)
|
|
|
|
all_counters[i].count = 0;
|
|
|
|
acpi_gpe_count = 0;
|
|
|
|
acpi_irq_handled = 0;
|
|
|
|
acpi_irq_not_handled = 0;
|
|
|
|
goto end;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* show the event status for both GPEs and Fixed Events */
|
|
|
|
result = get_status(index, &status, &handle);
|
|
|
|
if (result)
|
|
|
|
goto end;
|
|
|
|
|
2014-10-10 02:40:05 +00:00
|
|
|
if (!(status & ACPI_EVENT_FLAG_HAS_HANDLER)) {
|
2010-07-15 02:46:30 +00:00
|
|
|
printk(KERN_WARNING PREFIX
|
|
|
|
"Can not change Invalid GPE/Fixed Event status\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (index < num_gpes) {
|
|
|
|
if (!strcmp(buf, "disable\n") &&
|
|
|
|
(status & ACPI_EVENT_FLAG_ENABLED))
|
|
|
|
result = acpi_disable_gpe(handle, index);
|
|
|
|
else if (!strcmp(buf, "enable\n") &&
|
|
|
|
!(status & ACPI_EVENT_FLAG_ENABLED))
|
|
|
|
result = acpi_enable_gpe(handle, index);
|
|
|
|
else if (!strcmp(buf, "clear\n") &&
|
2016-08-04 08:43:45 +00:00
|
|
|
(status & ACPI_EVENT_FLAG_STATUS_SET))
|
2010-07-15 02:46:30 +00:00
|
|
|
result = acpi_clear_gpe(handle, index);
|
2016-08-04 08:43:45 +00:00
|
|
|
else if (!strcmp(buf, "mask\n"))
|
|
|
|
result = acpi_mask_gpe(handle, index, TRUE);
|
|
|
|
else if (!strcmp(buf, "unmask\n"))
|
|
|
|
result = acpi_mask_gpe(handle, index, FALSE);
|
2013-09-12 07:32:05 +00:00
|
|
|
else if (!kstrtoul(buf, 0, &tmp))
|
|
|
|
all_counters[index].count = tmp;
|
2010-07-15 02:46:30 +00:00
|
|
|
else
|
2013-09-12 07:32:05 +00:00
|
|
|
result = -EINVAL;
|
2010-07-15 02:46:30 +00:00
|
|
|
} else if (index < num_gpes + ACPI_NUM_FIXED_EVENTS) {
|
|
|
|
int event = index - num_gpes;
|
|
|
|
if (!strcmp(buf, "disable\n") &&
|
2016-08-04 08:43:45 +00:00
|
|
|
(status & ACPI_EVENT_FLAG_ENABLE_SET))
|
2010-07-15 02:46:30 +00:00
|
|
|
result = acpi_disable_event(event, ACPI_NOT_ISR);
|
|
|
|
else if (!strcmp(buf, "enable\n") &&
|
2016-08-04 08:43:45 +00:00
|
|
|
!(status & ACPI_EVENT_FLAG_ENABLE_SET))
|
2010-07-15 02:46:30 +00:00
|
|
|
result = acpi_enable_event(event, ACPI_NOT_ISR);
|
|
|
|
else if (!strcmp(buf, "clear\n") &&
|
2016-08-04 08:43:45 +00:00
|
|
|
(status & ACPI_EVENT_FLAG_STATUS_SET))
|
2010-07-15 02:46:30 +00:00
|
|
|
result = acpi_clear_event(event);
|
2013-09-12 07:32:05 +00:00
|
|
|
else if (!kstrtoul(buf, 0, &tmp))
|
|
|
|
all_counters[index].count = tmp;
|
2010-07-15 02:46:30 +00:00
|
|
|
else
|
2013-09-12 07:32:05 +00:00
|
|
|
result = -EINVAL;
|
2010-07-15 02:46:30 +00:00
|
|
|
} else
|
|
|
|
all_counters[index].count = strtoul(buf, NULL, 0);
|
|
|
|
|
|
|
|
if (ACPI_FAILURE(result))
|
|
|
|
result = -EINVAL;
|
|
|
|
end:
|
|
|
|
return result ? result : size;
|
|
|
|
}
|
|
|
|
|
2016-12-16 04:07:57 +00:00
|
|
|
/*
|
|
|
|
* A Quirk Mechanism for GPE Flooding Prevention:
|
|
|
|
*
|
|
|
|
* Quirks may be needed to prevent GPE flooding on a specific GPE. The
|
|
|
|
* flooding typically cannot be detected and automatically prevented by
|
|
|
|
* ACPI_GPE_DISPATCH_NONE check because there is a _Lxx/_Exx prepared in
|
|
|
|
* the AML tables. This normally indicates a feature gap in Linux, thus
|
|
|
|
* instead of providing endless quirk tables, we provide a boot parameter
|
|
|
|
* for those who want this quirk. For example, if the users want to prevent
|
|
|
|
* the GPE flooding for GPE 00, they need to specify the following boot
|
|
|
|
* parameter:
|
|
|
|
* acpi_mask_gpe=0x00
|
|
|
|
* The masking status can be modified by the following runtime controlling
|
|
|
|
* interface:
|
|
|
|
* echo unmask > /sys/firmware/acpi/interrupts/gpe00
|
|
|
|
*/
|
2019-11-14 07:16:24 +00:00
|
|
|
#define ACPI_MASKABLE_GPE_MAX 0x100
|
2017-11-30 20:05:59 +00:00
|
|
|
static DECLARE_BITMAP(acpi_masked_gpes_map, ACPI_MASKABLE_GPE_MAX) __initdata;
|
2016-12-16 04:07:57 +00:00
|
|
|
|
|
|
|
static int __init acpi_gpe_set_masked_gpes(char *val)
|
|
|
|
{
|
|
|
|
u8 gpe;
|
|
|
|
|
2019-11-14 07:16:24 +00:00
|
|
|
if (kstrtou8(val, 0, &gpe))
|
2016-12-16 04:07:57 +00:00
|
|
|
return -EINVAL;
|
2017-11-30 20:05:59 +00:00
|
|
|
set_bit(gpe, acpi_masked_gpes_map);
|
2016-12-16 04:07:57 +00:00
|
|
|
|
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
__setup("acpi_mask_gpe=", acpi_gpe_set_masked_gpes);
|
|
|
|
|
|
|
|
void __init acpi_gpe_apply_masked_gpes(void)
|
|
|
|
{
|
|
|
|
acpi_handle handle;
|
|
|
|
acpi_status status;
|
2019-11-14 07:16:24 +00:00
|
|
|
u16 gpe;
|
2016-12-16 04:07:57 +00:00
|
|
|
|
2017-11-30 20:05:59 +00:00
|
|
|
for_each_set_bit(gpe, acpi_masked_gpes_map, ACPI_MASKABLE_GPE_MAX) {
|
|
|
|
status = acpi_get_gpe_device(gpe, &handle);
|
|
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
pr_info("Masking GPE 0x%x.\n", gpe);
|
|
|
|
(void)acpi_mask_gpe(handle, gpe, TRUE);
|
2016-12-16 04:07:57 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
void acpi_irq_stats_init(void)
|
|
|
|
{
|
2010-12-13 05:39:26 +00:00
|
|
|
acpi_status status;
|
2010-07-15 02:46:30 +00:00
|
|
|
int i;
|
|
|
|
|
|
|
|
if (all_counters)
|
|
|
|
return;
|
|
|
|
|
|
|
|
num_gpes = acpi_current_gpe_count;
|
|
|
|
num_counters = num_gpes + ACPI_NUM_FIXED_EVENTS + NUM_COUNTERS_EXTRA;
|
|
|
|
|
treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 21:03:40 +00:00
|
|
|
all_attrs = kcalloc(num_counters + 1, sizeof(struct attribute *),
|
2010-07-15 02:46:30 +00:00
|
|
|
GFP_KERNEL);
|
|
|
|
if (all_attrs == NULL)
|
|
|
|
return;
|
|
|
|
|
treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 21:03:40 +00:00
|
|
|
all_counters = kcalloc(num_counters, sizeof(struct event_counter),
|
2010-07-15 02:46:30 +00:00
|
|
|
GFP_KERNEL);
|
|
|
|
if (all_counters == NULL)
|
|
|
|
goto fail;
|
|
|
|
|
2012-10-31 02:25:36 +00:00
|
|
|
status = acpi_install_global_event_handler(acpi_global_event_handler, NULL);
|
2010-12-13 05:39:26 +00:00
|
|
|
if (ACPI_FAILURE(status))
|
|
|
|
goto fail;
|
|
|
|
|
treewide: kzalloc() -> kcalloc()
The kzalloc() function has a 2-factor argument form, kcalloc(). This
patch replaces cases of:
kzalloc(a * b, gfp)
with:
kcalloc(a * b, gfp)
as well as handling cases of:
kzalloc(a * b * c, gfp)
with:
kzalloc(array3_size(a, b, c), gfp)
as it's slightly less ugly than:
kzalloc_array(array_size(a, b), c, gfp)
This does, however, attempt to ignore constant size factors like:
kzalloc(4 * 1024, gfp)
though any constants defined via macros get caught up in the conversion.
Any factors with a sizeof() of "unsigned char", "char", and "u8" were
dropped, since they're redundant.
The Coccinelle script used for this was:
// Fix redundant parens around sizeof().
@@
type TYPE;
expression THING, E;
@@
(
kzalloc(
- (sizeof(TYPE)) * E
+ sizeof(TYPE) * E
, ...)
|
kzalloc(
- (sizeof(THING)) * E
+ sizeof(THING) * E
, ...)
)
// Drop single-byte sizes and redundant parens.
@@
expression COUNT;
typedef u8;
typedef __u8;
@@
(
kzalloc(
- sizeof(u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * (COUNT)
+ COUNT
, ...)
|
kzalloc(
- sizeof(u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(__u8) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(char) * COUNT
+ COUNT
, ...)
|
kzalloc(
- sizeof(unsigned char) * COUNT
+ COUNT
, ...)
)
// 2-factor product with sizeof(type/expression) and identifier or constant.
@@
type TYPE;
expression THING;
identifier COUNT_ID;
constant COUNT_CONST;
@@
(
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_ID)
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_ID
+ COUNT_ID, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (COUNT_CONST)
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * COUNT_CONST
+ COUNT_CONST, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_ID)
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_ID
+ COUNT_ID, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (COUNT_CONST)
+ COUNT_CONST, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * COUNT_CONST
+ COUNT_CONST, sizeof(THING)
, ...)
)
// 2-factor product, only identifiers.
@@
identifier SIZE, COUNT;
@@
- kzalloc
+ kcalloc
(
- SIZE * COUNT
+ COUNT, SIZE
, ...)
// 3-factor product with 1 sizeof(type) or sizeof(expression), with
// redundant parens removed.
@@
expression THING;
identifier STRIDE, COUNT;
type TYPE;
@@
(
kzalloc(
- sizeof(TYPE) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(TYPE) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(TYPE))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * (COUNT) * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * (STRIDE)
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
|
kzalloc(
- sizeof(THING) * COUNT * STRIDE
+ array3_size(COUNT, STRIDE, sizeof(THING))
, ...)
)
// 3-factor product with 2 sizeof(variable), with redundant parens removed.
@@
expression THING1, THING2;
identifier COUNT;
type TYPE1, TYPE2;
@@
(
kzalloc(
- sizeof(TYPE1) * sizeof(TYPE2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(TYPE2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(THING1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(THING1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * COUNT
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
|
kzalloc(
- sizeof(TYPE1) * sizeof(THING2) * (COUNT)
+ array3_size(COUNT, sizeof(TYPE1), sizeof(THING2))
, ...)
)
// 3-factor product, only identifiers, with redundant parens removed.
@@
identifier STRIDE, SIZE, COUNT;
@@
(
kzalloc(
- (COUNT) * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * STRIDE * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- (COUNT) * (STRIDE) * (SIZE)
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
|
kzalloc(
- COUNT * STRIDE * SIZE
+ array3_size(COUNT, STRIDE, SIZE)
, ...)
)
// Any remaining multi-factor products, first at least 3-factor products,
// when they're not all constants...
@@
expression E1, E2, E3;
constant C1, C2, C3;
@@
(
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(
- (E1) * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * E3
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- (E1) * (E2) * (E3)
+ array3_size(E1, E2, E3)
, ...)
|
kzalloc(
- E1 * E2 * E3
+ array3_size(E1, E2, E3)
, ...)
)
// And then all remaining 2 factors products when they're not all constants,
// keeping sizeof() as the second factor argument.
@@
expression THING, E1, E2;
type TYPE;
constant C1, C2, C3;
@@
(
kzalloc(sizeof(THING) * C2, ...)
|
kzalloc(sizeof(TYPE) * C2, ...)
|
kzalloc(C1 * C2 * C3, ...)
|
kzalloc(C1 * C2, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * (E2)
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(TYPE) * E2
+ E2, sizeof(TYPE)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * (E2)
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- sizeof(THING) * E2
+ E2, sizeof(THING)
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * E2
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- (E1) * (E2)
+ E1, E2
, ...)
|
- kzalloc
+ kcalloc
(
- E1 * E2
+ E1, E2
, ...)
)
Signed-off-by: Kees Cook <keescook@chromium.org>
2018-06-12 21:03:40 +00:00
|
|
|
counter_attrs = kcalloc(num_counters, sizeof(struct kobj_attribute),
|
2010-07-15 02:46:30 +00:00
|
|
|
GFP_KERNEL);
|
|
|
|
if (counter_attrs == NULL)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
for (i = 0; i < num_counters; ++i) {
|
|
|
|
char buffer[12];
|
|
|
|
char *name;
|
|
|
|
|
|
|
|
if (i < num_gpes)
|
|
|
|
sprintf(buffer, "gpe%02X", i);
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_PMTIMER)
|
|
|
|
sprintf(buffer, "ff_pmtimer");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_GLOBAL)
|
|
|
|
sprintf(buffer, "ff_gbl_lock");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_POWER_BUTTON)
|
|
|
|
sprintf(buffer, "ff_pwr_btn");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_SLEEP_BUTTON)
|
|
|
|
sprintf(buffer, "ff_slp_btn");
|
|
|
|
else if (i == num_gpes + ACPI_EVENT_RTC)
|
|
|
|
sprintf(buffer, "ff_rt_clk");
|
|
|
|
else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_GPE)
|
|
|
|
sprintf(buffer, "gpe_all");
|
|
|
|
else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI)
|
|
|
|
sprintf(buffer, "sci");
|
|
|
|
else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_SCI_NOT)
|
|
|
|
sprintf(buffer, "sci_not");
|
|
|
|
else if (i == num_gpes + ACPI_NUM_FIXED_EVENTS + COUNT_ERROR)
|
|
|
|
sprintf(buffer, "error");
|
|
|
|
else
|
|
|
|
sprintf(buffer, "bug%02X", i);
|
|
|
|
|
2013-07-03 22:04:55 +00:00
|
|
|
name = kstrdup(buffer, GFP_KERNEL);
|
2010-07-15 02:46:30 +00:00
|
|
|
if (name == NULL)
|
|
|
|
goto fail;
|
|
|
|
|
|
|
|
sysfs_attr_init(&counter_attrs[i].attr);
|
|
|
|
counter_attrs[i].attr.name = name;
|
|
|
|
counter_attrs[i].attr.mode = 0644;
|
|
|
|
counter_attrs[i].show = counter_show;
|
|
|
|
counter_attrs[i].store = counter_set;
|
|
|
|
|
|
|
|
all_attrs[i] = &counter_attrs[i].attr;
|
|
|
|
}
|
|
|
|
|
|
|
|
interrupt_stats_attr_group.attrs = all_attrs;
|
|
|
|
if (!sysfs_create_group(acpi_kobj, &interrupt_stats_attr_group))
|
|
|
|
return;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
delete_gpe_attr_array();
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __exit interrupt_stats_exit(void)
|
|
|
|
{
|
|
|
|
sysfs_remove_group(acpi_kobj, &interrupt_stats_attr_group);
|
|
|
|
|
|
|
|
delete_gpe_attr_array();
|
|
|
|
}
|
|
|
|
|
2011-11-04 02:33:46 +00:00
|
|
|
static ssize_t
|
2020-06-12 04:51:50 +00:00
|
|
|
acpi_show_profile(struct kobject *kobj, struct kobj_attribute *attr,
|
2011-11-04 02:33:46 +00:00
|
|
|
char *buf)
|
|
|
|
{
|
|
|
|
return sprintf(buf, "%d\n", acpi_gbl_FADT.preferred_profile);
|
|
|
|
}
|
|
|
|
|
2020-06-12 04:51:50 +00:00
|
|
|
static const struct kobj_attribute pm_profile_attr =
|
2011-11-04 02:33:46 +00:00
|
|
|
__ATTR(pm_profile, S_IRUGO, acpi_show_profile, NULL);
|
|
|
|
|
2013-03-03 22:08:16 +00:00
|
|
|
static ssize_t hotplug_enabled_show(struct kobject *kobj,
|
|
|
|
struct kobj_attribute *attr, char *buf)
|
|
|
|
{
|
|
|
|
struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
|
|
|
|
|
|
|
|
return sprintf(buf, "%d\n", hotplug->enabled);
|
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t hotplug_enabled_store(struct kobject *kobj,
|
|
|
|
struct kobj_attribute *attr,
|
|
|
|
const char *buf, size_t size)
|
|
|
|
{
|
|
|
|
struct acpi_hotplug_profile *hotplug = to_acpi_hotplug_profile(kobj);
|
|
|
|
unsigned int val;
|
|
|
|
|
|
|
|
if (kstrtouint(buf, 10, &val) || val > 1)
|
|
|
|
return -EINVAL;
|
|
|
|
|
|
|
|
acpi_scan_hotplug_enabled(hotplug, val);
|
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct kobj_attribute hotplug_enabled_attr =
|
|
|
|
__ATTR(enabled, S_IRUGO | S_IWUSR, hotplug_enabled_show,
|
|
|
|
hotplug_enabled_store);
|
|
|
|
|
|
|
|
static struct attribute *hotplug_profile_attrs[] = {
|
|
|
|
&hotplug_enabled_attr.attr,
|
|
|
|
NULL
|
|
|
|
};
|
|
|
|
|
2013-03-18 23:16:15 +00:00
|
|
|
static struct kobj_type acpi_hotplug_profile_ktype = {
|
2013-03-03 22:08:16 +00:00
|
|
|
.sysfs_ops = &kobj_sysfs_ops,
|
|
|
|
.default_attrs = hotplug_profile_attrs,
|
|
|
|
};
|
|
|
|
|
|
|
|
void acpi_sysfs_add_hotplug_profile(struct acpi_hotplug_profile *hotplug,
|
|
|
|
const char *name)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
|
|
|
|
if (!hotplug_kobj)
|
|
|
|
goto err_out;
|
|
|
|
|
2013-09-25 20:23:20 +00:00
|
|
|
error = kobject_init_and_add(&hotplug->kobj,
|
|
|
|
&acpi_hotplug_profile_ktype, hotplug_kobj, "%s", name);
|
2020-05-27 21:17:17 +00:00
|
|
|
if (error) {
|
|
|
|
kobject_put(&hotplug->kobj);
|
2013-03-03 22:08:16 +00:00
|
|
|
goto err_out;
|
2020-05-27 21:17:17 +00:00
|
|
|
}
|
2013-03-03 22:08:16 +00:00
|
|
|
|
|
|
|
kobject_uevent(&hotplug->kobj, KOBJ_ADD);
|
|
|
|
return;
|
|
|
|
|
|
|
|
err_out:
|
|
|
|
pr_err(PREFIX "Unable to add hotplug profile '%s'\n", name);
|
|
|
|
}
|
|
|
|
|
2013-05-02 22:26:16 +00:00
|
|
|
static ssize_t force_remove_show(struct kobject *kobj,
|
|
|
|
struct kobj_attribute *attr, char *buf)
|
|
|
|
{
|
2017-04-03 07:40:23 +00:00
|
|
|
return sprintf(buf, "%d\n", 0);
|
2013-05-02 22:26:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static ssize_t force_remove_store(struct kobject *kobj,
|
|
|
|
struct kobj_attribute *attr,
|
|
|
|
const char *buf, size_t size)
|
|
|
|
{
|
|
|
|
bool val;
|
|
|
|
int ret;
|
|
|
|
|
|
|
|
ret = strtobool(buf, &val);
|
|
|
|
if (ret < 0)
|
|
|
|
return ret;
|
|
|
|
|
2017-04-03 07:40:23 +00:00
|
|
|
if (val) {
|
|
|
|
pr_err("Enabling force_remove is not supported anymore. Please report to linux-acpi@vger.kernel.org if you depend on this functionality\n");
|
|
|
|
return -EINVAL;
|
|
|
|
}
|
2013-05-02 22:26:16 +00:00
|
|
|
return size;
|
|
|
|
}
|
|
|
|
|
|
|
|
static const struct kobj_attribute force_remove_attr =
|
|
|
|
__ATTR(force_remove, S_IRUGO | S_IWUSR, force_remove_show,
|
|
|
|
force_remove_store);
|
|
|
|
|
2010-07-15 02:46:30 +00:00
|
|
|
int __init acpi_sysfs_init(void)
|
|
|
|
{
|
|
|
|
int result;
|
|
|
|
|
|
|
|
result = acpi_tables_sysfs_init();
|
2011-11-04 02:33:46 +00:00
|
|
|
if (result)
|
|
|
|
return result;
|
2013-03-03 22:08:16 +00:00
|
|
|
|
|
|
|
hotplug_kobj = kobject_create_and_add("hotplug", acpi_kobj);
|
2015-10-15 16:19:30 +00:00
|
|
|
if (!hotplug_kobj)
|
|
|
|
return -ENOMEM;
|
|
|
|
|
2013-05-02 22:26:16 +00:00
|
|
|
result = sysfs_create_file(hotplug_kobj, &force_remove_attr.attr);
|
|
|
|
if (result)
|
|
|
|
return result;
|
|
|
|
|
2011-11-04 02:33:46 +00:00
|
|
|
result = sysfs_create_file(acpi_kobj, &pm_profile_attr.attr);
|
2010-07-15 02:46:30 +00:00
|
|
|
return result;
|
|
|
|
}
|