diff options
| author | Steve Muckle <smuckle@linaro.org> | 2015-11-25 15:59:25 -0800 |
|---|---|---|
| committer | Leo Yan <leo.yan@linaro.org> | 2016-05-10 16:53:23 +0800 |
| commit | 9d44dc7fe29c4b925ddbbd6a2551929da28dfbfb (patch) | |
| tree | 22f7a1993a5ca3db0189199a46a891408005d964 /kernel/sched | |
| parent | 6b6c1924539526c89384067fe70b9fe856c7b626 (diff) | |
sched/cpufreq_sched: add trace events
Trace events will aid in debugging, profiling and tuning.
Signed-off-by: Steve Muckle <smuckle@linaro.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/cpufreq_sched.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/kernel/sched/cpufreq_sched.c b/kernel/sched/cpufreq_sched.c index 58bca8d2ca65..5afe56a82491 100644 --- a/kernel/sched/cpufreq_sched.c +++ b/kernel/sched/cpufreq_sched.c @@ -14,6 +14,9 @@ #include <linux/delay.h> #include <linux/string.h> +#define CREATE_TRACE_POINTS +#include <trace/events/cpufreq_sched.h> + #include "sched.h" #define THROTTLE_NSEC 50000000 /* 50ms default */ @@ -78,6 +81,7 @@ static bool finish_last_request(struct gov_data *gd) int usec_left = ktime_to_ns(ktime_sub(gd->throttle, now)); usec_left /= NSEC_PER_USEC; + trace_cpufreq_sched_throttled(usec_left); usleep_range(usec_left, usec_left + 100); now = ktime_get(); if (ktime_after(now, gd->throttle)) @@ -186,6 +190,9 @@ static void update_fdomain_capacity_request(int cpu) goto out; freq_new = policy->freq_table[index_new].frequency; + trace_cpufreq_sched_request_opp(cpu, capacity, freq_new, + gd->requested_freq); + if (freq_new == gd->requested_freq) goto out; @@ -222,6 +229,8 @@ void update_cpu_capacity_request(int cpu, bool request) if (new_capacity == scr->total) return; + trace_cpufreq_sched_update_capacity(cpu, request, scr, new_capacity); + scr->total = new_capacity; if (request) update_fdomain_capacity_request(cpu); |