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authorliqiong <liqiong@nfschina.com>2022-05-12 16:32:30 +0200
committerSteven Rostedt (Google) <rostedt@goodmis.org>2022-05-27 03:13:00 +0200
commit2d601b98643dd2846e2958d931826e7b7af44969 (patch)
tree29d15a6e4aaa48c20be659597d582a16134c11a4 /kernel/trace
parenttracing/timerlat: Do not wakeup the thread if the trace stops at the IRQ (diff)
downloadlinux-2d601b98643dd2846e2958d931826e7b7af44969.tar.xz
linux-2d601b98643dd2846e2958d931826e7b7af44969.zip
tracing: Change "char *" string form to "char []"
The "char []" string form declares a single variable. It is better than "char *" which creates two variables in the final assembly. Link: https://lkml.kernel.org/r/20220512143230.28796-1-liqiong@nfschina.com Signed-off-by: liqiong <liqiong@nfschina.com> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace')
-rw-r--r--kernel/trace/trace.c2
-rw-r--r--kernel/trace/trace_events_hist.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 4825883b2ffd..e38a7ca4cdd0 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -4252,7 +4252,7 @@ static void print_func_help_header_irq(struct array_buffer *buf, struct seq_file
unsigned int flags)
{
bool tgid = flags & TRACE_ITER_RECORD_TGID;
- const char *space = " ";
+ static const char space[] = " ";
int prec = tgid ? 12 : 2;
print_event_info(buf, m);
diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c
index c6a65738feb3..48e82e141d54 100644
--- a/kernel/trace/trace_events_hist.c
+++ b/kernel/trace/trace_events_hist.c
@@ -4165,7 +4165,7 @@ static int create_val_field(struct hist_trigger_data *hist_data,
return __create_val_field(hist_data, val_idx, file, NULL, field_str, 0);
}
-static const char *no_comm = "(no comm)";
+static const char no_comm[] = "(no comm)";
static u64 hist_field_execname(struct hist_field *hist_field,
struct tracing_map_elt *elt,