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cpufreq/acpi-cpufreq: Use amd_get_boost_ratio()

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Update get_max_boost_ratio() to use the new amd_get_boost_ratio()
helper function instead of calling amd_get_effective_highest_perf()
directly.

This ensures the boost ratio is calculated correctly on systems where
frequency values should be used instead of performance values.

Reviewed-by: K Prateek Nayak <kprateek.nayak@amd.com>
Tested-by: K Prateek Nayak <kprateek.nayak@amd.com>
Acked-by: Rafael J. Wysocki (Intel) <rafael@kernel.org>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20261001142341.2934582-3-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <superm1@kernel.org>
This commit is contained in:
Mario Limonciello 2026-10-01 09:23:40 -05:00 committed by Mario Limonciello
parent 4817d3e2b9
commit f9da951d30
1 changed files with 9 additions and 11 deletions
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20
drivers/cpufreq/acpi-cpufreq.c
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@ -626,7 +626,7 @@ static int acpi_cpufreq_blacklist(struct cpuinfo_x86 *c)
static u64 get_max_boost_ratio(unsigned int cpu, u64 *nominal_freq)
{
struct cppc_perf_caps perf_caps;
u64 highest_perf, nominal_perf;
u64 numerator, denominator;
int ret;
if (acpi_pstate_strict)
@ -640,33 +640,31 @@ static u64 get_max_boost_ratio(unsigned int cpu, u64 *nominal_freq)
}
if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD) {
ret = amd_get_effective_highest_perf(cpu);
if (ret < 0) {
pr_debug("CPU%d: Unable to get boost ratio numerator (%d)\n",
ret = amd_get_boost_ratio(cpu, &numerator, &denominator);
if (ret) {
pr_debug("CPU%d: Unable to get boost ratio (%d)\n",
cpu, ret);
return 0;
}
highest_perf = ret;
} else {
highest_perf = perf_caps.highest_perf;
numerator = perf_caps.highest_perf;
denominator = perf_caps.nominal_perf;
}
nominal_perf = perf_caps.nominal_perf;
if (nominal_freq)
*nominal_freq = perf_caps.nominal_freq * 1000;
if (!highest_perf || !nominal_perf) {
if (!numerator || !denominator) {
pr_debug("CPU%d: highest or nominal performance missing\n", cpu);
return 0;
}
if (highest_perf < nominal_perf) {
if (numerator < denominator) {
pr_debug("CPU%d: nominal performance above highest\n", cpu);
return 0;
}
return div_u64(highest_perf << SCHED_CAPACITY_SHIFT, nominal_perf);
return div_u64(numerator << SCHED_CAPACITY_SHIFT, denominator);
}
#else