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'-Wunused-but-set-variable' triggers this warning: arch/x86/events/amd/core.c: In function amd_pmu_handle_irq: arch/x86/events/amd/core.c:656:6: warning: variable active set but not used [-Wunused-but-set-variable] GCC is right, 'active' is not used anymore. This variable was introduced earlier this year and then removed in: df4d29732fdad perf/x86/amd: Change/fix NMI latency mitigation to use a timestamp [ mingo: Improved the changelog, fixed build warning caused by this fix, improved surrounding code. ] Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Cc: <acme@kernel.org> Cc: <alexander.shishkin@linux.intel.com> Cc: <mark.rutland@arm.com> Cc: <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20191110094453.113001-1-zhengyongjun3@huawei.com Signed-off-by: Ingo Molnar <mingo@kernel.org>