linux-kernel - [RFC][PATCH 2/8] perf/x86/intel: Simplify intel_tfa_commit

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Message-Id: <20190314130705.547793802@infradead.org>
Date:   Thu, 14 Mar 2019 14:01:15 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     mingo@...nel.org, eranian@...gle.com, jolsa@...hat.com
Cc:     linux-kernel@...r.kernel.org, tonyj@...e.com,
        nelson.dsouza@...el.com, peterz@...radead.org
Subject: [RFC][PATCH 2/8] perf/x86/intel: Simplify intel_tfa_commit_scheduling()

validate_group() calls x86_schedule_events(.assign=NULL) and therefore
will not call intel_tfa_commit_scheduling(). So there is no point in
checking cpuc->is_fake, we'll never get there.

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

--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -2015,7 +2015,7 @@ static void intel_tfa_commit_scheduling(
 	/*
 	 * We're going to use PMC3, make sure TFA is set before we touch it.
 	 */
-	if (cntr == 3 && !cpuc->is_fake)
+	if (cntr == 3)
 		intel_set_tfa(cpuc, true);
 }