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Message-id: <1437104849-14937-1-git-send-email-umesh.t@samsung.com> Date: Fri, 17 Jul 2015 09:17:29 +0530 From: Umesh Tiwari <umesh.t@...sung.com> To: rostedt@...dmis.org, mingo@...hat.com, linux-kernel@...r.kernel.org Cc: gupta.namit@...sung.com, pankaj.m@...sung.com, Umesh Tiwari <umesh.t@...sung.com> Subject: [PATCH v2] 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. Signed-off-by: Umesh Tiwari <umesh.t@...sung.com> --- kernel/trace/ftrace.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 4f22802..1353441 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -600,13 +600,18 @@ 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) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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