From: Umesh Tiwari Date: Mon, 22 Jun 2015 11:28:08 +0000 (+0530) Subject: ftrace: add tracing_thresh to function profile X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8e436ca042d904533a1e14fdc85f0facdfca752f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git ftrace: add tracing_thresh to function profile This patch extends tracing_thresh functionality to function profile tracer. If tracing_thresh is set, print those entries only, whose average is > tracing thresh. Link: http://lkml.kernel.org/r/1434972488-8571-1-git-send-email-umesh.t@samsung.com Signed-off-by: Umesh Tiwari [ Removed unnecessary 'moved' comment ] Signed-off-by: Steven Rostedt --- diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 02bece4a99ea..f46dbb5cdf76 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -613,13 +613,18 @@ static int function_stat_show(struct seq_file *m, void *v) goto out; } +#ifdef CONFIG_FUNCTION_GRAPH_TRACER + avg = rec->time; + do_div(avg, rec->counter); + if (tracing_thresh && (avg < tracing_thresh)) + goto out; +#endif + kallsyms_lookup(rec->ip, NULL, NULL, NULL, str); seq_printf(m, " %-30.30s %10lu", str, rec->counter); #ifdef CONFIG_FUNCTION_GRAPH_TRACER seq_puts(m, " "); - avg = rec->time; - do_div(avg, rec->counter); /* Sample standard deviation (s^2) */ if (rec->counter <= 1)