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Commit 8e436ca0 authored by Umesh Tiwari's avatar Umesh Tiwari Committed by Steven Rostedt
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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: default avatarUmesh Tiwari <umesh.t@samsung.com>
[ Removed unnecessary 'moved' comment ]
Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
parent 72ac426a

kernel/trace/ftrace.c

+7 −2
Original line number Original line Diff line number Diff line
@@ -613,13 +613,18 @@ static int function_stat_show(struct seq_file *m, void *v) 
		goto out;

		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);

	kallsyms_lookup(rec->ip, NULL, NULL, NULL, str);

	seq_printf(m, "  %-30.30s  %10lu", str, rec->counter);

	seq_printf(m, "  %-30.30s  %10lu", str, rec->counter);





#ifdef CONFIG_FUNCTION_GRAPH_TRACER

#ifdef CONFIG_FUNCTION_GRAPH_TRACER

	seq_puts(m, "    ");

	seq_puts(m, "    ");

	avg = rec->time;

	do_div(avg, rec->counter);





	/* Sample standard deviation (s^2) */

	/* Sample standard deviation (s^2) */

	if (rec->counter <= 1)

	if (rec->counter <= 1)