diff options
| author | Antti P Miettinen <amiettinen@nvidia.com> | 2012-03-29 07:14:40 +0300 |
|---|---|---|
| committer | Rohan Somvanshi <rsomvanshi@nvidia.com> | 2012-04-12 22:56:53 -0700 |
| commit | 02ec547ceb849e603c602973a6af0baa96568032 (patch) | |
| tree | 9c879e1a2b7e9da46d22a600752ac509e5788f68 /drivers/cpufreq | |
| parent | 83e03321026504ee3ec69bf0a4790b82206f7a07 (diff) | |
tracing: Add tracepoints for CPU scaling
Simple tracepoints for measuring CPU scaling latencies.
Bug 960307
Change-Id: I6fd4e67e352a2ff134da58866d943457506d080b
Signed-off-by: Antti P Miettinen <amiettinen@nvidia.com>
Reviewed-on: http://git-master/r/93080
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Juha Tukkinen <jtukkinen@nvidia.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/cpufreq.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c index 96adadf59e9e..3acc42805e21 100644 --- a/drivers/cpufreq/cpufreq.c +++ b/drivers/cpufreq/cpufreq.c @@ -1449,8 +1449,10 @@ int __cpufreq_driver_target(struct cpufreq_policy *policy, pr_debug("target for CPU %u: %u kHz, relation %u\n", policy->cpu, target_freq, relation); + trace_cpu_scale(policy->cpu, policy->cur, POWER_CPU_SCALE_START); if (cpu_online(policy->cpu) && cpufreq_driver->target) retval = cpufreq_driver->target(policy, target_freq, relation); + trace_cpu_scale(policy->cpu, target_freq, POWER_CPU_SCALE_DONE); return retval; } |