linux-kernel - [tip: perf/core] perf/x86/intel: Replace deprecated CPU-hotplug functions

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Message-ID: <162996539374.25758.14860453072920511618.tip-bot2@tip-bot2>
Date:   Thu, 26 Aug 2021 08:09:53 -0000
From:   "tip-bot2 for Sebastian Andrzej Siewior" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...nel.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: perf/core] perf/x86/intel: Replace deprecated CPU-hotplug functions

The following commit has been merged into the perf/core branch of tip:

Commit-ID:     eda8a2c599d1ff874a63de7684b430740e747dea
Gitweb:        https://git.kernel.org/tip/eda8a2c599d1ff874a63de7684b430740e747dea
Author:        Sebastian Andrzej Siewior <bigeasy@...utronix.de>
AuthorDate:    Tue, 03 Aug 2021 16:15:53 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Thu, 26 Aug 2021 09:14:36 +02:00

perf/x86/intel: Replace deprecated CPU-hotplug functions

The functions get_online_cpus() and put_online_cpus() have been
deprecated during the CPU hotplug rework. They map directly to
cpus_read_lock() and cpus_read_unlock().

Replace deprecated CPU-hotplug functions with the official version.
The behavior remains unchanged.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
Link: https://lore.kernel.org/r/20210803141621.780504-11-bigeasy@linutronix.de
---
 arch/x86/events/intel/core.c | 8 ++++----
 arch/x86/events/intel/pt.c   | 4 ++--
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index ac6fd2d..7011e87 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -5032,9 +5032,9 @@ static ssize_t freeze_on_smi_store(struct device *cdev,
 
 	x86_pmu.attr_freeze_on_smi = val;
 
-	get_online_cpus();
+	cpus_read_lock();
 	on_each_cpu(flip_smm_bit, &val, 1);
-	put_online_cpus();
+	cpus_read_unlock();
 done:
 	mutex_unlock(&freeze_on_smi_mutex);
 
@@ -5077,9 +5077,9 @@ static ssize_t set_sysctl_tfa(struct device *cdev,
 
 	allow_tsx_force_abort = val;
 
-	get_online_cpus();
+	cpus_read_lock();
 	on_each_cpu(update_tfa_sched, NULL, 1);
-	put_online_cpus();
+	cpus_read_unlock();
 
 	return count;
 }
diff --git a/arch/x86/events/intel/pt.c b/arch/x86/events/intel/pt.c
index b044577..7f406c1 100644
--- a/arch/x86/events/intel/pt.c
+++ b/arch/x86/events/intel/pt.c
@@ -1708,7 +1708,7 @@ static __init int pt_init(void)
 	if (!boot_cpu_has(X86_FEATURE_INTEL_PT))
 		return -ENODEV;
 
-	get_online_cpus();
+	cpus_read_lock();
 	for_each_online_cpu(cpu) {
 		u64 ctl;
 
@@ -1716,7 +1716,7 @@ static __init int pt_init(void)
 		if (!ret && (ctl & RTIT_CTL_TRACEEN))
 			prior_warn++;
 	}
-	put_online_cpus();
+	cpus_read_unlock();
 
 	if (prior_warn) {
 		x86_add_exclusive(x86_lbr_exclusive_pt);