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SubjectRe: [patch 2/7] timer: Remove FIFO guarantee
On 26-05-15, 22:50, Thomas Gleixner wrote:
> The FIFO guarantee has been violated by the introduction of timer
> slack already. Remove it.
>
> This is a preparatory patch for converting the timer wheel to hlist
> which reduces the memory foot print of the wheel by 50%. It's a
> seperate patch so any (unlikely to happen) regression caused by this
> can be identified clearly.
>
> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
> ---
> kernel/time/timer.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> Index: tip/kernel/time/timer.c
> ===================================================================
> --- tip.orig/kernel/time/timer.c
> +++ tip/kernel/time/timer.c
> @@ -403,10 +403,8 @@ __internal_add_timer(struct tvec_base *b
> i = (expires >> (TVR_BITS + 3 * TVN_BITS)) & TVN_MASK;
> vec = base->tv5.vec + i;
> }
> - /*
> - * Timers are FIFO:
> - */
> - list_add_tail(&timer->entry, vec);
> +
> + list_add(&timer->entry, vec);
> }

Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>

--
viresh


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