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[RFC][PATCH 4/7] perf/x86/intel: Remove redundant test from intel_pmu_lbr_add()

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  [RFC][PATCH 4/7] perf/x86/intel: Remove redundant test from intel_pmu_lbr_add() Peter Zijlstra <peterz@infradead.org> - 2016-07-08 16:10 +0200

#1439488 — [RFC][PATCH 4/7] perf/x86/intel: Remove redundant test from intel_pmu_lbr_add()

By the time we call pmu::add(), event->ctx must be set, and we
even already rely on this, so remove that test from
intel_pmu_lbr_add().

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
---
 arch/x86/events/intel/lbr.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/arch/x86/events/intel/lbr.c
+++ b/arch/x86/events/intel/lbr.c
@@ -440,8 +440,7 @@ void intel_pmu_lbr_add(struct perf_event
 	}
 	cpuc->br_sel = event->hw.branch_reg.reg;
 
-	if (branch_user_callstack(cpuc->br_sel) && event->ctx &&
-					event->ctx->task_ctx_data) {
+	if (branch_user_callstack(cpuc->br_sel) && event->ctx->task_ctx_data) {
 		task_ctx = event->ctx->task_ctx_data;
 		task_ctx->lbr_callstack_users++;
 	}

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