Messages in this thread | | | Date | Mon, 16 Nov 2015 14:10:07 -0500 | From | Tejun Heo <> | Subject | Re: [PATCH 8/8] stop_machine: cleanup the usage of preemption counter in cpu_stopper_thread() |
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On Sun, Nov 15, 2015 at 08:33:32PM +0100, Oleg Nesterov wrote: > 1. Change this code to use preempt_count_inc/preempt_count_dec; this way > it works even if CONFIG_PREEMPT_COUNT=n, and we avoid the unnecessary > __preempt_schedule() check (stop_sched_class is not preemptible). > > And this makes clear that we only want to make preempt_count() != 0 > for __might_sleep() / schedule_debug(). > > 2. Change WARN_ONCE() to use %pf to print the function name and remove > kallsyms_lookup/ksym_buf. > > 3. Move "int ret" into the "if (work)" block, this looks more consistent. > > Signed-off-by: Oleg Nesterov <oleg@redhat.com>
The entire series looks good to me. Please feel free to add
Acked-by: Tejun Heo <tj@kernel.org>
Thanks.
-- tejun
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