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| author | Uros Bizjak <ubizjak@gmail.com> | 2024-10-07 10:56:28 +0200 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2024-10-10 01:59:49 +0200 |
| commit | eb887c4567d1b0e7684c026fe7df44afa96589e6 (patch) | |
| tree | 7dd9dda1a664633832caeb06abdd1d11197c89cd /kernel | |
| parent | trace/trace_event_perf: remove duplicate samples on the first tracepoint event (diff) | |
| download | linux-eb887c4567d1b0e7684c026fe7df44afa96589e6.tar.xz linux-eb887c4567d1b0e7684c026fe7df44afa96589e6.zip | |
tracing: Use atomic64_inc_return() in trace_clock_counter()
Use atomic64_inc_return(&ref) instead of atomic64_add_return(1, &ref)
to use optimized implementation and ease register pressure around
the primitive for targets that implement optimized variant.
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Link: https://lore.kernel.org/20241007085651.48544-1-ubizjak@gmail.com
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_clock.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/trace/trace_clock.c b/kernel/trace/trace_clock.c index 4702efb00ff2..4cb2ebc439be 100644 --- a/kernel/trace/trace_clock.c +++ b/kernel/trace/trace_clock.c @@ -154,5 +154,5 @@ static atomic64_t trace_counter; */ u64 notrace trace_clock_counter(void) { - return atomic64_add_return(1, &trace_counter); + return atomic64_inc_return(&trace_counter); } |