diff options
| author | David S. Miller <davem@davemloft.net> | 2012-08-17 12:14:01 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-08-19 08:26:20 +0200 |
| commit | b4f061a4b8cbf947de4fa816a1cfc53960da218e (patch) | |
| tree | 4fba7fd029f3c15a7f88156bf08f738eb943b87b | |
| parent | sparc64: Rework sparc_pmu_enable() so that the side effects are clearer. (diff) | |
| download | linux-b4f061a4b8cbf947de4fa816a1cfc53960da218e.tar.xz linux-b4f061a4b8cbf947de4fa816a1cfc53960da218e.zip | |
sparc64: Make sparc_pmu_{enable,disable}_event() multi-pcr aware.
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | arch/sparc/kernel/perf_event.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/sparc/kernel/perf_event.c b/arch/sparc/kernel/perf_event.c index 197c79e9206a..c3ad63775ff9 100644 --- a/arch/sparc/kernel/perf_event.c +++ b/arch/sparc/kernel/perf_event.c @@ -623,27 +623,35 @@ static u64 nop_for_index(int idx) static inline void sparc_pmu_enable_event(struct cpu_hw_events *cpuc, struct hw_perf_event *hwc, int idx) { u64 val, mask = mask_for_index(idx); + int pcr_index = 0; - val = cpuc->pcr[0]; + if (sparc_pmu->num_pcrs > 1) + pcr_index = idx; + + val = cpuc->pcr[pcr_index]; val &= ~mask; val |= hwc->config; - cpuc->pcr[0] = val; + cpuc->pcr[pcr_index] = val; - pcr_ops->write_pcr(0, cpuc->pcr[0]); + pcr_ops->write_pcr(pcr_index, cpuc->pcr[pcr_index]); } static inline void sparc_pmu_disable_event(struct cpu_hw_events *cpuc, struct hw_perf_event *hwc, int idx) { u64 mask = mask_for_index(idx); u64 nop = nop_for_index(idx); + int pcr_index = 0; u64 val; - val = cpuc->pcr[0]; + if (sparc_pmu->num_pcrs > 1) + pcr_index = idx; + + val = cpuc->pcr[pcr_index]; val &= ~mask; val |= nop; - cpuc->pcr[0] = val; + cpuc->pcr[pcr_index] = val; - pcr_ops->write_pcr(0, cpuc->pcr[0]); + pcr_ops->write_pcr(pcr_index, cpuc->pcr[pcr_index]); } static u64 sparc_perf_event_update(struct perf_event *event, |