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clocksource/drivers/c-sky: fixup ftrace call-graph panic
author
Guo Ren
<ren_guo@c-sky.com>
Mon, 31 Dec 2018 12:52:41 +0000
(20:52 +0800)
committer
Guo Ren
<ren_guo@c-sky.com>
Mon, 31 Dec 2018 15:17:23 +0000
(23:17 +0800)
We must add notrace on sched_clock_read, because it's called
by ftrace_graph_caller.
Signed-off-by: Guo Ren <ren_guo@c-sky.com>
drivers/clocksource/timer-mp-csky.c
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diff --git
a/drivers/clocksource/timer-mp-csky.c
b/drivers/clocksource/timer-mp-csky.c
index
3cb6dbc
..
183a995
100644
(file)
--- a/
drivers/clocksource/timer-mp-csky.c
+++ b/
drivers/clocksource/timer-mp-csky.c
@@
-97,7
+97,7
@@
static int csky_mptimer_dying_cpu(unsigned int cpu)
/*
* clock source
*/
-static u64 sched_clock_read(void)
+static u64
notrace
sched_clock_read(void)
{
return (u64)mfcr(PTIM_CCVR);
}