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| author | Huang Rui <ray.huang@amd.com> | 2021-12-24 09:05:03 +0800 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2021-12-30 18:51:39 +0100 |
| commit | 60e10f896dbf6d78f912e4972081bd4119131376 (patch) | |
| tree | ae87ffc0d81905b32c729894dee58f0ce172613e /drivers/cpufreq/amd-pstate.c | |
| parent | e059c184da47e92c6236f26b0fdaf9e92f0d55b5 (diff) | |
| download | linux-60e10f896dbf6d78f912e4972081bd4119131376.tar.bz2 | |
cpufreq: amd-pstate: Add trace for AMD P-State module
Add trace event to monitor the performance value changes which is
controlled by cpu governors.
Signed-off-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/amd-pstate.c')
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index cc62f7484007..63efd5de98a2 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -44,6 +44,7 @@ #include <asm/processor.h> #include <asm/cpufeature.h> #include <asm/cpu_device_id.h> +#include "amd-pstate-trace.h" #define AMD_PSTATE_TRANSITION_LATENCY 0x20000 #define AMD_PSTATE_TRANSITION_DELAY 500 @@ -220,6 +221,9 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf, value &= ~AMD_CPPC_MAX_PERF(~0L); value |= AMD_CPPC_MAX_PERF(max_perf); + trace_amd_pstate_perf(min_perf, des_perf, max_perf, + cpudata->cpu, (value != prev), fast_switch); + if (value == prev) return; |