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| author | Steven Rostedt <rostedt@goodmis.org> | 2026-02-08 13:38:34 -0500 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2026-02-08 21:01:13 -0500 |
| commit | e4c1a09afbe2f02fc66b5ccbc96aa3a7109f9b79 (patch) | |
| tree | bdcac9f17e05d5e8524bd5eca934efc652e65856 /kernel/trace/trace.h | |
| parent | 694b3f6fe0b6c86ff75e94302708f5a718027297 (diff) | |
| download | lwn-e4c1a09afbe2f02fc66b5ccbc96aa3a7109f9b79.tar.gz lwn-e4c1a09afbe2f02fc66b5ccbc96aa3a7109f9b79.zip | |
tracing: Add tracer_uses_snapshot() helper to remove #ifdefs
Instead of having #ifdef CONFIG_TRACER_MAX_TRACE around every access to
the struct tracer's use_max_tr field, add a helper function for that
access and if CONFIG_TRACER_MAX_TRACE is not configured it just returns
false.
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://patch.msgid.link/20260208183856.599390238@kernel.org
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace.h')
| -rw-r--r-- | kernel/trace/trace.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h index b50383aa8e50..ebb47abc0ee7 100644 --- a/kernel/trace/trace.h +++ b/kernel/trace/trace.h @@ -817,6 +817,18 @@ static inline void __trace_stack(struct trace_array *tr, unsigned int trace_ctx, } #endif /* CONFIG_STACKTRACE */ +#ifdef CONFIG_TRACER_MAX_TRACE +static inline bool tracer_uses_snapshot(struct tracer *tracer) +{ + return tracer->use_max_tr; +} +#else +static inline bool tracer_uses_snapshot(struct tracer *tracer) +{ + return false; +} +#endif + void trace_last_func_repeats(struct trace_array *tr, struct trace_func_repeats *last_info, unsigned int trace_ctx); |