lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

perf, x86: Implement IBS initialization

Browse Source 
This patch implements IBS feature detection and initialzation. The
code is shared between perf and oprofile. If IBS is available on the
system for perf, a pmu is setup.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1316597423-25723-3-git-send-email-robert.richter@amd.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Robert Richter
2011-09-21 11:30:18 +02:00
committed by Ingo Molnar
parent ee5789dbcc
commit b716916679
6 changed files with 297 additions and 201 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/include/asm/perf_event.h
View File

@ -159,6 +159,8 @@ union cpuid10_edx {
#define IBS_OP_MAX_CNT 0x0000FFFFULL
#define IBS_OP_MAX_CNT_EXT 0x007FFFFFULL /* not a register bit mask */
extern u32 get_ibs_caps(void);
#ifdef CONFIG_PERF_EVENTS
extern void perf_events_lapic_init(void);