Messages in this thread Patch in this message | | | From | highguy@gmail ... | Subject | [PATCH 5/6] Allow decrementing counters | Date | Sun, 7 Feb 2010 12:30:58 +0100 |
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From: Stijn Devriendt <HIGHGuY@gmail.com>
--- include/linux/perf_event.h | 6 +++--- kernel/perf_event.c | 16 ++++++++-------- 2 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 4f7d318..084f322 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -515,7 +515,7 @@ struct pmu { void (*disable) (struct perf_event *event); void (*update) (struct perf_event *event); void (*unthrottle) (struct perf_event *event); - u64 (*add) (struct perf_event *event, u64 count); + u64 (*add) (struct perf_event *event, s64 count); int (*reset) (struct perf_event *event); void (*wakeup) (struct perf_event *event); u64 (*read) (struct perf_event *event); @@ -826,10 +826,10 @@ static inline int is_software_event(struct perf_event *event) extern atomic_t perf_swevent_enabled[PERF_COUNT_SW_MAX]; -extern void __perf_sw_event(u32, u64, int, struct pt_regs *, u64); +extern void __perf_sw_event(u32, s64, int, struct pt_regs *, u64); static inline void -perf_sw_event(u32 event_id, u64 nr, int nmi, struct pt_regs *regs, u64 addr) +perf_sw_event(u32 event_id, s64 nr, int nmi, struct pt_regs *regs, u64 addr) { if (atomic_read(&perf_swevent_enabled[event_id])) __perf_sw_event(event_id, nr, nmi, regs, addr); diff --git a/kernel/perf_event.c b/kernel/perf_event.c index 724aafd..08885d0 100644 --- a/kernel/perf_event.c +++ b/kernel/perf_event.c @@ -3770,12 +3770,12 @@ static void perf_event_wakeup_one(struct perf_event *event) wake_up(&event->waitq); } -static u64 __perf_event_add(struct perf_event *event, u64 count) +static u64 __perf_event_add(struct perf_event *event, s64 count) { return atomic64_add_return(count, &event->count); } -static u64 perf_event_add(struct perf_event *event, u64 count) +static u64 perf_event_add(struct perf_event *event, s64 count) { if (event->pmu->add) return event->pmu->add(event, count); @@ -3856,7 +3856,7 @@ static void perf_swevent_unthrottle(struct perf_event *event) */ } -static void perf_swevent_add(struct perf_event *event, u64 nr, +static void perf_swevent_add(struct perf_event *event, s64 nr, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { @@ -3870,10 +3870,10 @@ static void perf_swevent_add(struct perf_event *event, u64 nr, if (!hwc->sample_period) return; - if (nr == 1 && hwc->sample_period == 1 && !event->attr.freq) + if (abs(nr) == 1 && hwc->sample_period == 1 && !event->attr.freq) return perf_swevent_overflow(event, 1, nmi, data, regs); - if (atomic64_add_negative(nr, &hwc->period_left)) + if (atomic64_add_negative(abs(nr), &hwc->period_left)) return; perf_swevent_overflow(event, 0, nmi, data, regs); @@ -3956,7 +3956,7 @@ static int perf_swevent_match(struct perf_event *event, static void perf_swevent_ctx_event(struct perf_event_context *ctx, enum perf_type_id type, - u32 event_id, u64 nr, int nmi, + u32 event_id, s64 nr, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { @@ -4004,7 +4004,7 @@ void perf_swevent_put_recursion_context(int rctx) EXPORT_SYMBOL_GPL(perf_swevent_put_recursion_context); static void do_perf_sw_event(enum perf_type_id type, u32 event_id, - u64 nr, int nmi, + s64 nr, int nmi, struct perf_sample_data *data, struct pt_regs *regs) { @@ -4025,7 +4025,7 @@ static void do_perf_sw_event(enum perf_type_id type, u32 event_id, rcu_read_unlock(); } -void __perf_sw_event(u32 event_id, u64 nr, int nmi, +void __perf_sw_event(u32 event_id, s64 nr, int nmi, struct pt_regs *regs, u64 addr) { struct perf_sample_data data; -- 1.6.6
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