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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>
This commit is contained in:
Steven Rostedt (VMware) 2021-06-25 19:47:33 -04:00
parent 62de4f29e9
commit 6880c987e4
2 changed files with 4 additions and 5 deletions
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3
kernel/trace/trace.c
View File

@ -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;

6
kernel/trace/trace.h
View File

@ -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