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| author |   Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2021-08-03 16:16:19 +0200 |
|---|---|---|
| committer |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2021-08-17 15:47:14 -0400 |
| commit | 99c37d1a63eafcd3673302a7953df760b46d0f6f (patch) | |
| tree | 647124a3fdf14f13aaa3d1d947d4af1067bb33d9 /kernel/trace/trace_osnoise.c | |
| parent | MAINTAINERS: Add an entry for os noise/latency (diff) | |
| download | wireguard-linux-99c37d1a63eafcd3673302a7953df760b46d0f6f.tar.xz wireguard-linux-99c37d1a63eafcd3673302a7953df760b46d0f6f.zip | |
tracing: 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.
Link: https://lkml.kernel.org/r/20210803141621.780504-37-bigeasy@linutronix.de
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_osnoise.c')
| -rw-r--r-- | kernel/trace/trace_osnoise.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/kernel/trace/trace_osnoise.c b/kernel/trace/trace_osnoise.c index b61eefe5ccf5..65b08b8e5bf8 100644 --- a/kernel/trace/trace_osnoise.c +++ b/kernel/trace/trace_osnoise.c @@ -1498,12 +1498,12 @@ static void stop_per_cpu_kthreads(void) { int cpu; - get_online_cpus(); + cpus_read_lock(); for_each_online_cpu(cpu) stop_kthread(cpu); - put_online_cpus(); + cpus_read_unlock(); } /* @@ -1551,7 +1551,7 @@ static int start_per_cpu_kthreads(struct trace_array *tr) int retval; int cpu; - get_online_cpus(); + cpus_read_lock(); /* * Run only on CPUs in which trace and osnoise are allowed to run. */ @@ -1572,7 +1572,7 @@ static int start_per_cpu_kthreads(struct trace_array *tr) } } - put_online_cpus(); + cpus_read_unlock(); return 0; } @@ -1590,7 +1590,7 @@ static void osnoise_hotplug_workfn(struct work_struct *dummy) goto out_unlock_trace; mutex_lock(&interface_lock); - get_online_cpus(); + cpus_read_lock(); if (!cpumask_test_cpu(cpu, &osnoise_cpumask)) goto out_unlock; @@ -1601,7 +1601,7 @@ static void osnoise_hotplug_workfn(struct work_struct *dummy) start_kthread(cpu); out_unlock: - put_online_cpus(); + cpus_read_unlock(); mutex_unlock(&interface_lock); out_unlock_trace: mutex_unlock(&trace_types_lock); @@ -1743,11 +1743,11 @@ osnoise_cpus_write(struct file *filp, const char __user *ubuf, size_t count, /* * osnoise_cpumask is read by CPU hotplug operations. */ - get_online_cpus(); + cpus_read_lock(); cpumask_copy(&osnoise_cpumask, osnoise_cpumask_new); - put_online_cpus(); + cpus_read_unlock(); mutex_unlock(&interface_lock); if (running) |