| Message ID | 20241125142514.2897143-1-mathieu.desnoyers@efficios.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [RFC,1/1] tracing: Use guard() rather than scoped_guard() | expand |
On Mon, Nov 25, 2024 at 09:25:14AM -0500, Mathieu Desnoyers wrote: > Using scoped_guard() in the implementation of trace_##name() adds an > unnecessary level of indentation. > > diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h > index b2633a72e871..e398f6e43f61 100644 > --- a/include/linux/tracepoint.h > +++ b/include/linux/tracepoint.h > @@ -259,8 +259,8 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) > { \ > if (static_branch_unlikely(&__tracepoint_##name.key)) { \ > if (cond) { \ > - scoped_guard(preempt_notrace) \ > - __DO_TRACE_CALL(name, TP_ARGS(args)); \ > + guard(preempt_notrace)(); \ > + __DO_TRACE_CALL(name, TP_ARGS(args)); \ > } \ > } \ > if (IS_ENABLED(CONFIG_LOCKDEP) && (cond)) { \ > @@ -275,8 +275,8 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) > { \ > might_fault(); \ > if (static_branch_unlikely(&__tracepoint_##name.key)) { \ > - scoped_guard(rcu_tasks_trace) \ > - __DO_TRACE_CALL(name, TP_ARGS(args)); \ > + guard(rcu_tasks_trace)(); \ > + __DO_TRACE_CALL(name, TP_ARGS(args)); \ > } \ > if (IS_ENABLED(CONFIG_LOCKDEP)) { \ > WARN_ONCE(!rcu_is_watching(), \ Yeah, that also works.
diff --git a/include/linux/tracepoint.h b/include/linux/tracepoint.h index b2633a72e871..e398f6e43f61 100644 --- a/include/linux/tracepoint.h +++ b/include/linux/tracepoint.h @@ -259,8 +259,8 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) { \ if (static_branch_unlikely(&__tracepoint_##name.key)) { \ if (cond) { \ - scoped_guard(preempt_notrace) \ - __DO_TRACE_CALL(name, TP_ARGS(args)); \ + guard(preempt_notrace)(); \ + __DO_TRACE_CALL(name, TP_ARGS(args)); \ } \ } \ if (IS_ENABLED(CONFIG_LOCKDEP) && (cond)) { \ @@ -275,8 +275,8 @@ static inline struct tracepoint *tracepoint_ptr_deref(tracepoint_ptr_t *p) { \ might_fault(); \ if (static_branch_unlikely(&__tracepoint_##name.key)) { \ - scoped_guard(rcu_tasks_trace) \ - __DO_TRACE_CALL(name, TP_ARGS(args)); \ + guard(rcu_tasks_trace)(); \ + __DO_TRACE_CALL(name, TP_ARGS(args)); \ } \ if (IS_ENABLED(CONFIG_LOCKDEP)) { \ WARN_ONCE(!rcu_is_watching(), \
Using scoped_guard() in the implementation of trace_##name() adds an unnecessary level of indentation. [ This is based on the series "tracing: Remove conditional locking from tracepoint". ] Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Michael Jeanson <mjeanson@efficios.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Yonghong Song <yhs@fb.com> Cc: Paul E. McKenney <paulmck@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Andrii Nakryiko <andrii.nakryiko@gmail.com> Cc: bpf@vger.kernel.org Cc: Joel Fernandes <joel@joelfernandes.org> Cc: Jordan Rife <jrife@google.com> Cc: linux-trace-kernel@vger.kernel.org --- include/linux/tracepoint.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)