perf/x86/intel: Eliminate dead code in intel_pmu_lbr_del()
Since pmu::del() is always called under perf_pmu_disable(), the block conditional on cpuc->enabled is dead. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -467,12 +467,6 @@ void intel_pmu_lbr_del(struct perf_event *event)
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cpuc->lbr_users--;
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WARN_ON_ONCE(cpuc->lbr_users < 0);
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perf_sched_cb_dec(event->ctx->pmu);
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if (cpuc->enabled && !cpuc->lbr_users) {
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__intel_pmu_lbr_disable();
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/* avoid stale pointer */
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cpuc->lbr_context = NULL;
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}
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}
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void intel_pmu_lbr_enable_all(bool pmi)
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