diff options
| author |   K Prateek Nayak <kprateek.nayak@amd.com> | 2025-04-09 05:34:45 +0000 |
|---|---|---|
| committer |   Peter Zijlstra <peterz@infradead.org> | 2025-04-16 21:09:11 +0200 |
| commit | 8157fbc907452aa5674df2de23c1c7305c907006 (patch) | |
| tree | 3f035613faeca1f99a4cb2ccadf1d7ec8fa24a13 /drivers/cpufreq | |
| parent | sched/topology: Introduce sched_update_asym_prefer_cpu() (diff) | |
| download | linux-rng-8157fbc907452aa5674df2de23c1c7305c907006.tar.xz linux-rng-8157fbc907452aa5674df2de23c1c7305c907006.zip | |
cpufreq/amd-pstate: Update asym_prefer_cpu when core rankings change
A subset of AMD systems supporting Preferred Core rankings can have
their rankings changed dynamically at runtime. Update the
"sg->asym_prefer_cpu" across the local hierarchy of CPU when the
preferred core ranking changes.
Signed-off-by: K Prateek Nayak <kprateek.nayak@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20250409053446.23367-4-kprateek.nayak@amd.com
Diffstat (limited to 'drivers/cpufreq')
| -rw-r--r-- | drivers/cpufreq/amd-pstate.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/cpufreq/amd-pstate.c b/drivers/cpufreq/amd-pstate.c index 6789eed1bb5b..8796217ccc60 100644 --- a/drivers/cpufreq/amd-pstate.c +++ b/drivers/cpufreq/amd-pstate.c @@ -844,8 +844,10 @@ static void amd_pstate_update_limits(unsigned int cpu) if (highest_perf_changed) { WRITE_ONCE(cpudata->prefcore_ranking, cur_high); - if (cur_high < CPPC_MAX_PERF) + if (cur_high < CPPC_MAX_PERF) { sched_set_itmt_core_prio((int)cur_high, cpu); + sched_update_asym_prefer_cpu(cpu, prev_high, cur_high); + } } } |