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ACPI: CPPC: Drop check for non zero perf ratio

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perf_ratio is a u64 and SCHED_CAPACITY_SCALE is a large number.
Shifting by one will never have a zero value.

Drop the check.

Suggested-by: Gautham R. Shenoy <gautham.shenoy@amd.com>
Reviewed-by: Gautham R. Shenoy <gautham.sheoy@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
This commit is contained in:
Mario Limonciello
2024-08-27 13:50:45 -05:00
parent 6c09e3b445
commit 3355ac2541
1 changed files with 1 additions and 6 deletions
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arch/x86/kernel/acpi/cppc.c
+1 -6
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@@ -91,13 +91,8 @@ static void amd_set_max_freq_ratio(void)
return;
}
perf_ratio = div_u64(numerator * SCHED_CAPACITY_SCALE, nominal_perf);
/* midpoint between max_boost and max_P */
perf_ratio = (perf_ratio + SCHED_CAPACITY_SCALE) >> 1;
if (!perf_ratio) {
pr_debug("Non-zero highest/nominal perf values led to a 0 ratio\n");
return;
}
perf_ratio = (div_u64(numerator * SCHED_CAPACITY_SCALE, nominal_perf) + SCHED_CAPACITY_SCALE) >> 1;
freq_invariance_set_perf_ratio(perf_ratio, false);
}