From: Peter Zijlstra Date: Mon, 22 Jun 2009 12:34:35 +0000 (+0200) Subject: perf_counter: Add scale information to the mmap control page X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=7f8b4e4e0988dadfd22330fd147ad2453e19f510;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git perf_counter: Add scale information to the mmap control page Add the needed time scale to the self-profile mmap information. Signed-off-by: Peter Zijlstra LKML-Reference: Signed-off-by: Ingo Molnar --- diff --git a/include/linux/perf_counter.h b/include/linux/perf_counter.h index 489d5cbfbcca..bcbf1c43ed42 100644 --- a/include/linux/perf_counter.h +++ b/include/linux/perf_counter.h @@ -232,12 +232,14 @@ struct perf_counter_mmap_page { __u32 lock; /* seqlock for synchronization */ __u32 index; /* hardware counter identifier */ __s64 offset; /* add to hardware counter value */ + __u64 time_enabled; /* time counter active */ + __u64 time_running; /* time counter on cpu */ /* * Hole for extension of the self monitor capabilities */ - __u64 __reserved[125]; /* align to 1k */ + __u64 __reserved[123]; /* align to 1k */ /* * Control data for the mmap() data buffer. diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c index c2b19c111718..23614adab475 100644 --- a/kernel/perf_counter.c +++ b/kernel/perf_counter.c @@ -1782,6 +1782,12 @@ void perf_counter_update_userpage(struct perf_counter *counter) if (counter->state == PERF_COUNTER_STATE_ACTIVE) userpg->offset -= atomic64_read(&counter->hw.prev_count); + userpg->time_enabled = counter->total_time_enabled + + atomic64_read(&counter->child_total_time_enabled); + + userpg->time_running = counter->total_time_running + + atomic64_read(&counter->child_total_time_running); + barrier(); ++userpg->lock; preempt_enable();