diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2024-08-26 16:13:57 -0500 |
|---|---|---|
| committer | Mario Limonciello <mario.limonciello@amd.com> | 2024-09-11 10:23:23 -0500 |
| commit | 45722e777fd99ea863fe653c1838d39f678506e2 (patch) | |
| tree | 1858fb07952e8f15f31157134f9ce8dfe58f28b7 /drivers/cpufreq | |
| parent | ad4caad58d91d3293880f8074f7ad125490ce636 (diff) | |
cpufreq: amd-pstate: Optimize amd_pstate_update_limits()
Don't take and release the mutex when prefcore isn't present and
avoid initialization of variables that will be initially set
in the function.
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 89623203f918..f550d31f80eb 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -810,17 +810,17 @@ static void amd_pstate_update_limits(unsigned int cpu) cpudata = policy->driver_data; - mutex_lock(&amd_pstate_driver_lock); - if ((!amd_pstate_prefcore) || (!cpudata->hw_prefcore)) - goto free_cpufreq_put; + if (!amd_pstate_prefcore) + return; + mutex_lock(&amd_pstate_driver_lock); ret = amd_get_highest_perf(cpu, &cur_high); if (ret) goto free_cpufreq_put; prev_high = READ_ONCE(cpudata->prefcore_ranking); - if (prev_high != cur_high) { - highest_perf_changed = true; + highest_perf_changed = (prev_high != cur_high); + if (highest_perf_changed) { WRITE_ONCE(cpudata->prefcore_ranking, cur_high); if (cur_high < CPPC_MAX_PERF) |