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Leo Yan 2e8e22b179 perf arm-spe: Don't set data source if it's not a memory operation 
[ Upstream commit 51ba539f5b ]

Except for memory load and store operations, ARM SPE records also can
support other operation types, bug when set the data source field the
current code assumes a record is a either load operation or store
operation, this leads to wrongly synthesize memory samples.

This patch strictly checks the record operation type, it only sets data
source only for the operation types ARM_SPE_LD and ARM_SPE_ST,
otherwise, returns zero for data source.  Therefore, we can synthesize
memory samples only when data source is a non-zero value, the function
arm_spe__is_memory_event() is useless and removed.

Fixes: e55ed3423c ("perf arm-spe: Synthesize memory event")
Reviewed-by: Ali Saidi <alisaidi@amazon.com>
Reviewed-by: German Gomez <german.gomez@arm.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Tested-by: Ali Saidi <alisaidi@amazon.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: alisaidi@amazon.com
Cc: Andrew Kilroy <andrew.kilroy@arm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.garry@huawei.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Li Huafei <lihuafei1@huawei.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Forrington <nick.forrington@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Link: http://lore.kernel.org/lkml/20220517020326.18580-5-alisaidi@amazon.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-29 09:04:32 +02:00
arch KVM: arm64: Prevent kmemleak from accessing pKVM memory 2022-06-29 09:04:30 +02:00
block block: disable the elevator int del_gendisk 2022-06-29 09:04:30 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:28:03 +02:00
crypto crypto: memneq - move into lib/ 2022-06-22 14:28:06 +02:00
Documentation dt-bindings: nvmem: sfp: Add clock properties 2022-06-25 15:29:47 +02:00
drivers net: phy: at803x: fix NULL pointer dereference on AR9331 PHY 2022-06-29 09:04:31 +02:00
fs btrfs: add error messages to all unrecognized mount options 2022-06-29 09:04:26 +02:00
include ata: libata: add qc->flags in ata_qc_complete_template tracepoint 2022-06-29 09:04:27 +02:00
init gcc-12: disable '-Warray-bounds' universally for now 2022-06-22 14:27:55 +02:00
ipc ipc/mqueue: use get_tree_nodev() in mqueue_get_tree() 2022-06-09 10:30:30 +02:00
kernel rethook: Reject getting a rethook if RCU is not watching 2022-06-29 09:04:30 +02:00
lib crypto: memneq - move into lib/ 2022-06-22 14:28:06 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm/slub: add missing TID updates on slab deactivation 2022-06-29 09:04:27 +02:00
net net/sched: sch_netem: Fix arithmetic in netem_dump() for 32-bit platforms 2022-06-29 09:04:31 +02:00
samples samples/landlock: Format with clang-format 2022-06-09 10:30:46 +02:00
scripts faddr2line: Fix overlapping text section failures, the sequel 2022-06-22 14:28:03 +02:00
security selinux: free contexts previously transferred in selinux_add_opt() 2022-06-22 14:28:10 +02:00
sound ALSA: hda/realtek: Add quirk for Clevo NS50PU 2022-06-29 09:04:25 +02:00
tools perf arm-spe: Don't set data source if it's not a memory operation 2022-06-29 09:04:32 +02:00
usr Kbuild updates for v5.18 2022-03-31 11:59:03 -07:00
virt KVM: Free new dirty bitmap if creating a new memslot fails 2022-05-20 13:02:05 -04:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap hotfixes for 5.18-rc7 2022-05-13 10:22:37 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: Add new IOMMU development mailing list 2022-06-29 09:04:27 +02:00
Makefile Linux 5.18.7 2022-06-25 15:29:48 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.