https://github.com/torvalds/linux
Revision cea15092f098b7018e89f64a5a14bb71955965d5 authored by Stephen Boyd on 18 April 2013, 16:33:40 UTC, committed by Russell King on 19 April 2013, 21:23:55 UTC
cyc_to_sched_clock() is called by sched_clock() and cyc_to_ns()
is called by cyc_to_sched_clock(). I suspect that some compilers
inline both of these functions into sched_clock() and so we've
been getting away without having a notrace marking. It seems that
my compiler isn't inlining cyc_to_sched_clock() though, so I'm
hitting a recursion bug when I enable the function graph tracer,
causing my system to crash. Marking these functions notrace fixes
it. Technically cyc_to_ns() doesn't need the notrace because it's
already marked inline, but let's just add it so that if we ever
remove inline from that function it doesn't blow up.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
1 parent cb2d8b3
History
Tip revision: cea15092f098b7018e89f64a5a14bb71955965d5 authored by Stephen Boyd on 18 April 2013, 16:33:40 UTC
ARM: 7699/1: sched_clock: Add more notrace to prevent recursion
Tip revision: cea1509
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