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ring-buffer: Simplify reset_disabled_cpu_buffer() with use of guard()

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Use guard(raw_spinlock_irqsave)() in reset_disabled_cpu_buffer() to
simplify the locking.

Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20250527144623.77a9cc47@gandalf.local.home
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt
2025-05-29 08:24:07 -04:00
committed by Steven Rostedt (Google)
parent f115d2b70b
commit f0d8cbc8cc
1 changed files with 2 additions and 7 deletions
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kernel/trace/ring_buffer.c
+2 -7
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@@ -6113,21 +6113,16 @@ rb_reset_cpu(struct ring_buffer_per_cpu *cpu_buffer)
/* Must have disabled the cpu buffer then done a synchronize_rcu */
static void reset_disabled_cpu_buffer(struct ring_buffer_per_cpu *cpu_buffer)
{
unsigned long flags;
raw_spin_lock_irqsave(&cpu_buffer->reader_lock, flags);
guard(raw_spinlock_irqsave)(&cpu_buffer->reader_lock);
if (RB_WARN_ON(cpu_buffer, local_read(&cpu_buffer->committing)))
goto out;
return;
arch_spin_lock(&cpu_buffer->lock);
rb_reset_cpu(cpu_buffer);
arch_spin_unlock(&cpu_buffer->lock);
out:
raw_spin_unlock_irqrestore(&cpu_buffer->reader_lock, flags);
}
/**