cpufreq: Allow arch_freq_get_on_cpu to return an error

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Allow arch_freq_get_on_cpu to return an error for cases when retrieving
current CPU frequency is not possible, whether that being due to lack of
required arch support or due to other circumstances when the current
frequency cannot be determined at given point of time.

Signed-off-by: Beata Michalska <beata.michalska@arm.com>
Reviewed-by: Prasanna Kumar T S M <ptsm@linux.microsoft.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Rafael J. Wysocki <rafael@kernel.org>
Link: https://lore.kernel.org/r/20250131162439.3843071-2-beata.michalska@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>

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Beata Michalska 2025-01-31 16:24:36 +00:00 • committed by Catalin Marinas

parent 004b500a90

commit 38e480d4fc

4 changed files with 11 additions and 8 deletions

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2

arch/x86/kernel/cpu/aperfmperf.c

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7

arch/x86/kernel/cpu/proc.c

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8

drivers/cpufreq/cpufreq.c

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2

include/linux/cpufreq.h

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