Stephane Eranian d1e7e602cd perf/x86/intel: Move regs->flags EXACT bit init ... This patch removes a redundant store on regs->flags introduced by commit: 71eb9ee959 ("perf/x86/intel: Fix linear IP of PEBS real_ip on Haswell and later CPUs") We were clearing the PERF_EFLAGS_EXACT but it was overwritten by regs->flags = pebs->flags later on. The PERF_EFLAGS_EXACT is a software flag using bit 3 of regs->flags. X86 marks this bit as Reserved. To make sure this bit is zero before we do any IP processing, we clear it explicitly. Patch also removes the following assignment: regs->flags = pebs->flags | (regs->flags & PERF_EFLAGS_VM); Because there is no regs->flags to preserve anymore because set_linear_ip() is not called until later. Signed-off-by: Stephane Eranian <eranian@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: kan.liang@intel.com Link: http://lkml.kernel.org/r/1522909791-32498-1-git-send-email-eranian@google.com [ Improve capitalization, punctuation and clarity of comments. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-04-05 09:28:40 +02:00
..
amd	perf/x86/amd/power: Do not load AMD power module on !AMD platforms	2018-01-24 13:00:35 +01:00
intel	perf/x86/intel: Move regs->flags EXACT bit init	2018-04-05 09:28:40 +02:00
core.c	perf/x86: Update rdpmc_always_available static key to the modern API	2018-03-27 07:53:00 +02:00
Kconfig	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile
msr.c	x86/tsc: Get rid of rdtscll()	2018-03-23 20:07:54 +01:00
perf_event.h	Merge branch 'perf/urgent' into perf/core, to pick up fixes	2018-03-24 09:21:47 +01:00