korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-16 16:54:20 +08:00
Code Issues Packages Projects Releases Wiki Activity

perf/core, x86: Remove duplicate perf_event_mask variable

Browse Source 
The same information is stored also in x86_pmu.intel_ctrl. This
patch removes perf_event_mask and instead uses
x86_pmu.intel_ctrl directly.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1268826553-19518-5-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Robert Richter 2010-03-17 12:49:13 +01:00 committed by Ingo Molnar
parent 10f1014d86
commit d6dc0b4ead
1 changed files with 3 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
arch/x86/kernel/cpu/perf_event.c
View File

@ -75,8 +75,6 @@ copy_from_user_nmi(void *to, const void __user *from, unsigned long n)
return len;
}
static u64 perf_event_mask __read_mostly;
struct event_constraint {
union {
unsigned long idxmsk[BITS_TO_LONGS(X86_PMC_IDX_MAX)];
@ -1406,7 +1404,7 @@ void __init init_hw_perf_events(void)
x86_pmu.num_events, X86_PMC_MAX_GENERIC);
x86_pmu.num_events = X86_PMC_MAX_GENERIC;
}
perf_event_mask = (1 << x86_pmu.num_events) - 1;
x86_pmu.intel_ctrl = (1 << x86_pmu.num_events) - 1;
perf_max_events = x86_pmu.num_events;
if (x86_pmu.num_events_fixed > X86_PMC_MAX_FIXED) {
@ -1415,9 +1413,8 @@ void __init init_hw_perf_events(void)
x86_pmu.num_events_fixed = X86_PMC_MAX_FIXED;
}
perf_event_mask |=
x86_pmu.intel_ctrl |=
((1LL << x86_pmu.num_events_fixed)-1) << X86_PMC_IDX_FIXED;
x86_pmu.intel_ctrl = perf_event_mask;
perf_events_lapic_init();
register_die_notifier(&perf_event_nmi_notifier);
@ -1442,7 +1439,7 @@ void __init init_hw_perf_events(void)
pr_info("... value mask: %016Lx\n", x86_pmu.event_mask);
pr_info("... max period: %016Lx\n", x86_pmu.max_period);
pr_info("... fixed-purpose events: %d\n", x86_pmu.num_events_fixed);
pr_info("... event mask: %016Lx\n", perf_event_mask);
pr_info("... event mask: %016Lx\n", x86_pmu.intel_ctrl);
perf_cpu_notifier(x86_pmu_notifier);
}