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SubjectRe: [PATCH v3] sched: Micro optimization in pick_next_task() and in check_preempt_curr()
On Thu, 19 Dec 2019 20:12:15 +0000
Kirill Tkhai <ktkhai@virtuozzo.com> wrote:

> This introduces an optimization based on xxx_sched_class addresses
> in two hot scheduler functions: pick_next_task() and check_preempt_curr().
>
> It is possible to compare pointers to sched classes to check, which
> of them has a higher priority, instead of current iterations using
> for_each_class().
>
> One more result of the patch is that size of object file becomes a little
> less (excluding added BUG_ON(), which goes in __init section):
>
> $size kernel/sched/core.o
> text data bss dec hex filename
> before: 66446 18957 676 86079 1503f kernel/sched/core.o
> after: 66398 18957 676 86031 1500f kernel/sched/core.o
>
> Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>

Care to resend, not as a mime image?

-- Steve


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