Messages in this thread | | | Date | Fri, 10 May 2019 08:01:56 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH] x86: intel_epb: Take CONFIG_PM into account |
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* Rafael J. Wysocki <rjw@rjwysocki.net> wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > Commit b9c273babce7 (PM / arch: x86: MSR_IA32_ENERGY_PERF_BIAS sysfs > interface) caused kernels built with CONFIG_PM unset to crash on > systems supporting the Performance and Energy Bias Hint (EPB), > because it attempts to add files to sysfs directories that don't > exist on those systems. > > Prevent that from happening by taking CONFIG_PM into account so > that the code depending on it is not compiled at all when it is > not set. > > Fixes: b9c273babce7 (PM / arch: x86: MSR_IA32_ENERGY_PERF_BIAS sysfs interface) > Reported-by: Ido Schimmel <idosch@mellanox.com> > Tested-by: Ido Schimmel <idosch@mellanox.com> > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > --- > arch/x86/kernel/cpu/intel_epb.c | 22 +++++++++++++++++++++- > 1 file changed, 21 insertions(+), 1 deletion(-)
Acked-by: Ingo Molnar <mingo@kernel.org>
Thanks,
Ingo
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