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| author | Steven Rostedt <rostedt@goodmis.org> | 2025-05-05 17:21:15 -0400 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2025-05-09 15:19:10 -0400 |
| commit | 90633c34c36d0c15c9da4e19b2ceb46cab137478 (patch) | |
| tree | 9ff35f392699933fed9701f4e8ec2801006c4f4c /kernel/trace/trace.h | |
| parent | tracing: branch: Use trace_tracing_is_on_cpu() instead of "disabled" field (diff) | |
| download | linux-90633c34c36d0c15c9da4e19b2ceb46cab137478.tar.gz linux-90633c34c36d0c15c9da4e19b2ceb46cab137478.zip | |
tracing: Convert the per CPU "disabled" counter to local from atomic
The per CPU "disabled" counter is used for the latency tracers and stack
tracers to make sure that their accounting isn't messed up by an NMI or
interrupt coming in and affecting the same CPU data. But the counter is an
atomic_t type. As it only needs to synchronize against the current CPU,
switch it over to local_t type.
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Link: https://lore.kernel.org/20250505212236.394925376@goodmis.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index 69c1ecfb2290..188032d4ab69 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -183,7 +183,7 @@ struct trace_array; * the trace, etc.) */ struct trace_array_cpu { - atomic_t disabled; + local_t disabled; void *buffer_page; /* ring buffer spare */ unsigned long entries; |