path: root/arch
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authorStephen Boyd <sboyd@codeaurora.org>2013-04-17 16:26:18 -0700
committerOlof Johansson <olof@lixom.net>2013-04-26 17:17:29 -0700
commitf31c2f1c68aff83277eddc6798adf3438e9c680a (patch)
tree2019d040fe052e6979ebd211f12ec377da5f5c1e /arch
parent405f5e5ee53339cf5d5d1753f8614938b1222562 (diff)
ARM: arch_timer: Silence debug preempt warnings
Hot-plugging with CONFIG_DEBUG_PREEMPT=y on a device with arm architected timers causes a slew of "using smp_processor_id() in preemptible" warnings: BUG: using smp_processor_id() in preemptible [00000000] code: sh/111 caller is arch_timer_cpu_notify+0x14/0xc8 This happens because sometimes the cpu notifier, arch_timer_cpu_notify(), is called in preemptible context and other times in non-preemptible context but we use this_cpu_ptr() to retrieve the clockevent in all cases. We're only going to actually use the pointer in non-preemptible context though, so push the this_cpu_ptr() access down into the cases to force the checks to occur only in non-preemptible contexts. Cc: John Stultz <john.stultz@linaro.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Mark Rutland <mark.rutland@arm.com> Acked-by: Marc Zyngier <Marc.Zyngier@arm.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions