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cpufreq/amd-pstate: Use amd_pstate_update_min_max_limit() for EPP limits

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When the EPP updates are set the maximum capable frequency for the
CPU is used to set the upper limit instead of that of the policy.

Adjust amd_pstate_epp_update_limit() to reuse policy calculation code
from amd_pstate_update_min_max_limit().

Reviewed-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Perry Yuan <perry.yuan@amd.com>
Tested-by: Dhananjay Ugwekar <dhananjay.ugwekar@amd.com>
Link: https://lore.kernel.org/r/20241012174519.897-3-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Mario Limonciello 2024-10-12 12:45:18 -05:00
parent 67c08d303e
commit 047a2d0c83
1 changed files with 3 additions and 16 deletions
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19
drivers/cpufreq/amd-pstate.c
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@ -1485,26 +1485,13 @@ 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, min_limit_perf, max_limit_perf;
u32 max_perf, min_perf;
u64 value;
s16 epp;
if (cpudata->boost_supported && !policy->boost_enabled)
max_perf = READ_ONCE(cpudata->nominal_perf);
else
max_perf = READ_ONCE(cpudata->highest_perf);
max_perf = READ_ONCE(cpudata->highest_perf);
min_perf = READ_ONCE(cpudata->lowest_perf);
max_limit_perf = div_u64(policy->max * max_perf, policy->cpuinfo.max_freq);
min_limit_perf = div_u64(policy->min * max_perf, policy->cpuinfo.max_freq);
if (min_limit_perf < min_perf)
min_limit_perf = min_perf;
if (max_limit_perf < min_limit_perf)
max_limit_perf = min_limit_perf;
WRITE_ONCE(cpudata->max_limit_perf, max_limit_perf);
WRITE_ONCE(cpudata->min_limit_perf, min_limit_perf);
amd_pstate_update_min_max_limit(policy);
max_perf = clamp_t(unsigned long, max_perf, cpudata->min_limit_perf,
cpudata->max_limit_perf);