linux-kernel - [tip: x86/urgent] perf/x86/intel/lbr: Use setup_clear_cpu_cap() instead of clear_cpu

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Date:   Thu, 20 Oct 2022 15:17:56 -0000
From:   "tip-bot2 for Maxim Levitsky" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Maxim Levitsky <mlevitsk@...hat.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>,
        Kan Liang <kan.liang@...ux.intel.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: x86/urgent] perf/x86/intel/lbr: Use setup_clear_cpu_cap()
 instead of clear_cpu_cap()

The following commit has been merged into the x86/urgent branch of tip:

Commit-ID:     b329f5ddc9ce4b622d9c7aaf5c6df4de52caf91a
Gitweb:        https://git.kernel.org/tip/b329f5ddc9ce4b622d9c7aaf5c6df4de52caf91a
Author:        Maxim Levitsky <mlevitsk@...hat.com>
AuthorDate:    Mon, 18 Jul 2022 17:11:19 +03:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Thu, 20 Oct 2022 17:10:28 +02:00

perf/x86/intel/lbr: Use setup_clear_cpu_cap() instead of clear_cpu_cap()

clear_cpu_cap(&boot_cpu_data) is very similar to setup_clear_cpu_cap()
except that the latter also sets a bit in 'cpu_caps_cleared' which
later clears the same cap in secondary cpus, which is likely what is
meant here.

Fixes: 47125db27e47 ("perf/x86/intel/lbr: Support Architectural LBR")
Signed-off-by: Maxim Levitsky <mlevitsk@...hat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Kan Liang <kan.liang@...ux.intel.com>
Link: https://lkml.kernel.org/r/20220718141123.136106-2-mlevitsk@redhat.com
---
 arch/x86/events/intel/lbr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c
index 4fce1a4..8259d72 100644
--- a/arch/x86/events/intel/lbr.c
+++ b/arch/x86/events/intel/lbr.c
@@ -1596,7 +1596,7 @@ void __init intel_pmu_arch_lbr_init(void)
 	return;
 
 clear_arch_lbr:
-	clear_cpu_cap(&boot_cpu_data, X86_FEATURE_ARCH_LBR);
+	setup_clear_cpu_cap(X86_FEATURE_ARCH_LBR);
 }
 
 /**