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| author | Robert Richter <robert.richter@amd.com> | 2011-02-02 17:40:59 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-02-16 13:30:52 +0100 |
| commit | 73d6e52206a20354738418625cedc244cbfd5023 (patch) | |
| tree | d09c58e5cbf770e7d33c77b251326c975e17fb16 /arch/x86/kernel/cpu/perf_event_p6.c | |
| parent | 69d8e1e8ac0a7d829f1c0fd5bd07eb3022d9a1a0 (diff) | |
| download | talos-obmc-linux-73d6e52206a20354738418625cedc244cbfd5023.tar.gz talos-obmc-linux-73d6e52206a20354738418625cedc244cbfd5023.zip | |
perf, x86: Store perfctr msr addresses in config_base/event_base
Instead of storing the base addresses we can store the counter's msr
addresses directly in config_base/event_base of struct hw_perf_event.
This avoids recalculating the address with each msr access. The
addresses are configured one time. We also need this change to later
modify the address calculation.
Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1296664860-10886-5-git-send-email-robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/cpu/perf_event_p6.c')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event_p6.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/kernel/cpu/perf_event_p6.c b/arch/x86/kernel/cpu/perf_event_p6.c index 34ba07be2cda..20c097e33860 100644 --- a/arch/x86/kernel/cpu/perf_event_p6.c +++ b/arch/x86/kernel/cpu/perf_event_p6.c @@ -68,7 +68,7 @@ p6_pmu_disable_event(struct perf_event *event) if (cpuc->enabled) val |= ARCH_PERFMON_EVENTSEL_ENABLE; - (void)checking_wrmsrl(hwc->config_base + hwc->idx, val); + (void)checking_wrmsrl(hwc->config_base, val); } static void p6_pmu_enable_event(struct perf_event *event) @@ -81,7 +81,7 @@ static void p6_pmu_enable_event(struct perf_event *event) if (cpuc->enabled) val |= ARCH_PERFMON_EVENTSEL_ENABLE; - (void)checking_wrmsrl(hwc->config_base + hwc->idx, val); + (void)checking_wrmsrl(hwc->config_base, val); } static __initconst const struct x86_pmu p6_pmu = { |
