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arch: xtensa: Remove CONFIG_OPROFILE support

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The "oprofile" user-space tools don't use the kernel OPROFILE support
any more, and haven't in a long time. User-space has been converted to
the perf interfaces.

Remove the old oprofile's architecture specific support.

Suggested-by: Christoph Hellwig <hch@infradead.org>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Robert Richter <rric@kernel.org>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Acked-by: William Cohen <wcohen@redhat.com>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Viresh Kumar 2021-01-14 17:05:29 +05:30
parent a6a0683b71
commit a848bf1d9e
10 changed files with 1 additions and 70 deletions
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1
arch/xtensa/Kconfig
View file

@ -32,7 +32,6 @@ config XTENSA
select HAVE_FUTEX_CMPXCHG if !MMU
select HAVE_HW_BREAKPOINT if PERF_EVENTS
select HAVE_IRQ_TIME_ACCOUNTING
select HAVE_OPROFILE
select HAVE_PCI
select HAVE_PERF_EVENTS
select HAVE_STACKPROTECTOR

1
arch/xtensa/Makefile
View file

@ -83,7 +83,6 @@ core-y += $(buildvar) $(buildplf)
core-y += arch/xtensa/boot/dts/
libs-y += arch/xtensa/lib/ $(LIBGCC)
drivers-$(CONFIG_OPROFILE) += arch/xtensa/oprofile/
boot := arch/xtensa/boot

1
arch/xtensa/configs/audio_kc705_defconfig
View file

@ -18,7 +18,6 @@ CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_XTENSA_VARIANT_CUSTOM=y

1
arch/xtensa/configs/generic_kc705_defconfig
View file

@ -18,7 +18,6 @@ CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_XTENSA_VARIANT_DC233C=y

1
arch/xtensa/configs/smp_lx200_defconfig
View file

@ -18,7 +18,6 @@ CONFIG_BLK_DEV_INITRD=y
CONFIG_EXPERT=y
CONFIG_KALLSYMS_ALL=y
CONFIG_PROFILING=y
CONFIG_OPROFILE=y
CONFIG_MODULES=y
CONFIG_MODULE_UNLOAD=y
CONFIG_XTENSA_VARIANT_CUSTOM=y

1
arch/xtensa/configs/xip_kc705_defconfig
View file

@ -31,7 +31,6 @@ CONFIG_CMDLINE="earlycon=uart8250,mmio32native,0xfd050020,115200n8 console=ttyS0
CONFIG_USE_OF=y
CONFIG_BUILTIN_DTB_SOURCE="kc705"
# CONFIG_PARSE_BOOTPARAM is not set
CONFIG_OPROFILE=y
# CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
# CONFIG_COMPACTION is not set
CONFIG_NET=y

2
arch/xtensa/kernel/stacktrace.c
View file

@ -16,7 +16,7 @@
#include <asm/traps.h>
#include <linux/uaccess.h>
#if IS_ENABLED(CONFIG_OPROFILE) || IS_ENABLED(CONFIG_PERF_EVENTS)
#if IS_ENABLED(CONFIG_PERF_EVENTS)
/* Address of common_exception_return, used to check the
* transition from kernel to user space.

10
arch/xtensa/oprofile/Makefile
View file

@ -1,10 +0,0 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_OPROFILE) += oprofile.o
DRIVER_OBJS = $(addprefix ../../../drivers/oprofile/, \
oprof.o cpu_buffer.o buffer_sync.o \
event_buffer.o oprofile_files.o \
oprofilefs.o oprofile_stats.o \
timer_int.o )
oprofile-y := $(DRIVER_OBJS) init.o backtrace.o

27
arch/xtensa/oprofile/backtrace.c
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@ -1,27 +0,0 @@
/**
* @file backtrace.c
*
* @remark Copyright 2008 Tensilica Inc.
* Copyright (C) 2015 Cadence Design Systems Inc.
* @remark Read the file COPYING
*
*/
#include <linux/oprofile.h>
#include <asm/ptrace.h>
#include <asm/stacktrace.h>
static int xtensa_backtrace_cb(struct stackframe *frame, void *data)
{
oprofile_add_trace(frame->pc);
return 0;
}
void xtensa_backtrace(struct pt_regs * const regs, unsigned int depth)
{
if (user_mode(regs))
xtensa_backtrace_user(regs, depth, xtensa_backtrace_cb, NULL);
else
xtensa_backtrace_kernel(regs, depth, xtensa_backtrace_cb,
xtensa_backtrace_cb, NULL);
}

26
arch/xtensa/oprofile/init.c
View file

@ -1,26 +0,0 @@
/**
* @file init.c
*
* @remark Copyright 2008 Tensilica Inc.
* @remark Read the file COPYING
*
*/
#include <linux/kernel.h>
#include <linux/oprofile.h>
#include <linux/errno.h>
#include <linux/init.h>
extern void xtensa_backtrace(struct pt_regs *const regs, unsigned int depth);
int __init oprofile_arch_init(struct oprofile_operations *ops)
{
ops->backtrace = xtensa_backtrace;
return -ENODEV;
}
void oprofile_arch_exit(void)
{
}