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| author | Mario Limonciello <mario.limonciello@amd.com> | 2024-12-09 21:52:43 +0300 |
|---|---|---|
| committer | Mario Limonciello <mario.limonciello@amd.com> | 2024-12-11 19:44:53 +0300 |
| commit | 3f7b835fa4d0d06f82249a3aca989fdf9bdf4656 (patch) | |
| tree | 43d9f8cf1fb26e4c427ee543466735b63a15f683 | |
| parent | 942718f2a236cb3b27d2dbb5942538681b6e0e88 (diff) | |
| download | linux-3f7b835fa4d0d06f82249a3aca989fdf9bdf4656.tar.xz | |
cpufreq/amd-pstate: Move limit updating code
The limit updating code in amd_pstate_epp_update_limit() should not
only apply to EPP updates. Move it to amd_pstate_update_min_max_limit()
so other callers can benefit as well.
With this move it's not necessary to have clamp_t calls anymore because
the verify callback is called when setting limits.
Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Link: https://lore.kernel.org/r/20241209185248.16301-11-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 28 |
1 files changed, 5 insertions, 23 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index d279ace500d7..55529e32d325 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -537,10 +537,6 @@ static void amd_pstate_update(struct amd_cpudata *cpudata, u32 min_perf, u32 nominal_perf = READ_ONCE(cpudata->nominal_perf); u64 value = prev; - min_perf = clamp_t(unsigned long, min_perf, cpudata->min_limit_perf, - cpudata->max_limit_perf); - max_perf = clamp_t(unsigned long, max_perf, cpudata->min_limit_perf, - cpudata->max_limit_perf); des_perf = clamp_t(unsigned long, des_perf, min_perf, max_perf); max_freq = READ_ONCE(cpudata->max_limit_freq); @@ -607,7 +603,7 @@ static int amd_pstate_verify(struct cpufreq_policy_data *policy_data) static int amd_pstate_update_min_max_limit(struct cpufreq_policy *policy) { - u32 max_limit_perf, min_limit_perf, lowest_perf, max_perf, max_freq; + u32 max_limit_perf, min_limit_perf, max_perf, max_freq; struct amd_cpudata *cpudata = policy->driver_data; max_perf = READ_ONCE(cpudata->highest_perf); @@ -615,12 +611,8 @@ static int amd_pstate_update_min_max_limit(struct cpufreq_policy *policy) max_limit_perf = div_u64(policy->max * max_perf, max_freq); min_limit_perf = div_u64(policy->min * max_perf, max_freq); - lowest_perf = READ_ONCE(cpudata->lowest_perf); - if (min_limit_perf < lowest_perf) - min_limit_perf = lowest_perf; - - if (max_limit_perf < min_limit_perf) - max_limit_perf = min_limit_perf; + if (cpudata->policy == CPUFREQ_POLICY_PERFORMANCE) + min_limit_perf = min(cpudata->nominal_perf, max_limit_perf); WRITE_ONCE(cpudata->max_limit_perf, max_limit_perf); WRITE_ONCE(cpudata->min_limit_perf, min_limit_perf); @@ -1562,28 +1554,18 @@ static void amd_pstate_epp_cpu_exit(struct cpufreq_policy *policy) static int amd_pstate_epp_update_limit(struct cpufreq_policy *policy) { struct amd_cpudata *cpudata = policy->driver_data; - u32 max_perf, min_perf; u64 value; s16 epp; - max_perf = READ_ONCE(cpudata->highest_perf); - min_perf = READ_ONCE(cpudata->lowest_perf); amd_pstate_update_min_max_limit(policy); - max_perf = clamp_t(unsigned long, max_perf, cpudata->min_limit_perf, - cpudata->max_limit_perf); - min_perf = clamp_t(unsigned long, min_perf, cpudata->min_limit_perf, - cpudata->max_limit_perf); value = READ_ONCE(cpudata->cppc_req_cached); - if (cpudata->policy == CPUFREQ_POLICY_PERFORMANCE) - min_perf = min(cpudata->nominal_perf, max_perf); - value &= ~(AMD_CPPC_MAX_PERF_MASK | AMD_CPPC_MIN_PERF_MASK | AMD_CPPC_DES_PERF_MASK); - value |= FIELD_PREP(AMD_CPPC_MAX_PERF_MASK, max_perf); + value |= FIELD_PREP(AMD_CPPC_MAX_PERF_MASK, cpudata->max_limit_perf); value |= FIELD_PREP(AMD_CPPC_DES_PERF_MASK, 0); - value |= FIELD_PREP(AMD_CPPC_MIN_PERF_MASK, min_perf); + value |= FIELD_PREP(AMD_CPPC_MIN_PERF_MASK, cpudata->min_limit_perf); /* Get BIOS pre-defined epp value */ epp = amd_pstate_get_epp(cpudata, value); |