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| author | Chen Gang <gang.chen.5i5j@gmail.com> | 2015-11-10 05:15:15 +0800 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2015-11-10 10:16:05 -0500 |
| commit | e428abbbf616cd8fdd1162e4a624ad1d47b47544 (patch) | |
| tree | 1c8bbd0d8b22a264dcc35827892a950894e504c8 | |
| parent | 03e88ae6b369da2a26a6e09ad165e57d210789cd (diff) | |
tracing: #ifdef out uses of max trace when CONFIG_TRACER_MAX_TRACE is not set
tracing_max_lat_fops is used only when TRACER_MAX_TRACE enabled, so also
swith the related code. The related warning with defconfig under x86_64:
CC kernel/trace/trace.o
kernel/trace/trace.c:5466:37: warning: ‘tracing_max_lat_fops’ defined but not used [-Wunused-const-variable]
static const struct file_operations tracing_max_lat_fops = {
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| -rw-r--r-- | kernel/trace/trace.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index b11582618991..87fb9801bd9e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -4548,6 +4548,8 @@ out: return ret; } +#ifdef CONFIG_TRACER_MAX_TRACE + static ssize_t tracing_max_lat_read(struct file *filp, char __user *ubuf, size_t cnt, loff_t *ppos) @@ -4562,6 +4564,8 @@ tracing_max_lat_write(struct file *filp, const char __user *ubuf, return tracing_nsecs_write(filp->private_data, ubuf, cnt, ppos); } +#endif + static int tracing_open_pipe(struct inode *inode, struct file *filp) { struct trace_array *tr = inode->i_private; @@ -5463,12 +5467,14 @@ static const struct file_operations tracing_thresh_fops = { .llseek = generic_file_llseek, }; +#ifdef CONFIG_TRACER_MAX_TRACE static const struct file_operations tracing_max_lat_fops = { .open = tracing_open_generic, .read = tracing_max_lat_read, .write = tracing_max_lat_write, .llseek = generic_file_llseek, }; +#endif static const struct file_operations set_tracer_fops = { .open = tracing_open_generic, |