From 545db7e21e64766e6b7cb987fbfd3e79419726ce Mon Sep 17 00:00:00 2001 From: Christophe JAILLET Date: Sat, 21 Oct 2023 16:42:41 +0200 Subject: tracing/histograms: Simplify last_cmd_set() Turn a kzalloc()+strcpy()+strncat() into an equivalent and less verbose kasprintf(). Link: https://lore.kernel.org/linux-trace-kernel/30b6fb04dadc10a03cc1ad08f5d8a93ef623a167.1697899346.git.christophe.jaillet@wanadoo.fr Cc: Masami Hiramatsu Signed-off-by: Christophe JAILLET Reviewed-by: Mukesh ojha Signed-off-by: Steven Rostedt (Google) --- kernel/trace/trace_events_hist.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) (limited to 'kernel/trace/trace_events_hist.c') diff --git a/kernel/trace/trace_events_hist.c b/kernel/trace/trace_events_hist.c index d06938ae0717..1abc07fba1b9 100644 --- a/kernel/trace/trace_events_hist.c +++ b/kernel/trace/trace_events_hist.c @@ -774,23 +774,16 @@ static void last_cmd_set(struct trace_event_file *file, char *str) { const char *system = NULL, *name = NULL; struct trace_event_call *call; - int len; if (!str) return; - /* sizeof() contains the nul byte */ - len = sizeof(HIST_PREFIX) + strlen(str); kfree(last_cmd); - last_cmd = kzalloc(len, GFP_KERNEL); + + last_cmd = kasprintf(GFP_KERNEL, HIST_PREFIX "%s", str); if (!last_cmd) return; - strcpy(last_cmd, HIST_PREFIX); - /* Again, sizeof() contains the nul byte */ - len -= sizeof(HIST_PREFIX); - strncat(last_cmd, str, len); - if (file) { call = file->event_call; system = call->class->system; -- cgit v1.2.3