Commit 6880c987 authored Jun 25, 2021 by Steven Rostedt (VMware)

tracing: Add LATENCY_FS_NOTIFY to define if latency_fsnotify() is defined



With the coming addition of the osnoise tracer, the configs needed to
include the latency_fsnotify() has become more complex, and to keep the
declaration in the header file the same as in the C file, just have the
logic needed to define it in one place, and that defines LATENCY_FS_NOTIFY
which will be used in the C code.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

parent 62de4f29

kernel/trace/trace.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -1690,8 +1690,7 @@ static ssize_t trace_seq_to_buffer(struct trace_seq s, void buf, size_t cnt)
		unsigned long __read_mostly tracing_thresh;
		static const struct file_operations tracing_max_lat_fops;

		#if (defined(CONFIG_TRACER_MAX_TRACE) \|\| defined(CONFIG_HWLAT_TRACER)) && \
		defined(CONFIG_FSNOTIFY)
		#ifdef LATENCY_FS_NOTIFY

		static struct workqueue_struct *fsnotify_wq;

kernel/trace/trace.h

+3 −3

Original line number	Diff line number	Diff line
		@@ -677,13 +677,13 @@ void update_max_tr_single(struct trace_array *tr,

		#if (defined(CONFIG_TRACER_MAX_TRACE) \|\| defined(CONFIG_HWLAT_TRACER)) && \
		defined(CONFIG_FSNOTIFY)
		#define LATENCY_FS_NOTIFY
		#endif

		#ifdef LATENCY_FS_NOTIFY
		void latency_fsnotify(struct trace_array *tr);

		#else

		static inline void latency_fsnotify(struct trace_array *tr) { }

		#endif

		#ifdef CONFIG_STACKTRACE