On Sun, 14 May 2017 20:27:31 +0200
Thomas Gleixner <t...@linutronix.de> wrote:
> To enable smp_processor_id() and might_sleep() debug checks earlier, it's
> required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING.
>
> Adjust the system_state check in kswapd_run() to handle the extra states.
>
> Signed-off-by: Thomas Gleixner <t...@linutronix.de>
Reviewed-by: Steven Rostedt (VMware) <rost...@goodmis.org>
-- Steve
> Cc: Andrew Morton <a...@linux-foundation.org>
> Cc: Johannes Weiner <han...@cmpxchg.org>
> Cc: Mel Gorman <mgor...@techsingularity.net>
> Cc: Michal Hocko <mho...@suse.com>
> Cc: Vlastimil Babka <vba...@suse.cz>
> Cc: linux...@kvack.org
> ---
> mm/vmscan.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> --- a/mm/vmscan.c
> +++ b/mm/vmscan.c
> @@ -3643,7 +3643,7 @@ int kswapd_run(int nid)
> pgdat->kswapd = kthread_run(kswapd, pgdat, "kswapd%d", nid);
> if (IS_ERR(pgdat->kswapd)) {
> /* failure at boot is fatal */
> - BUG_ON(system_state == SYSTEM_BOOTING);
> + BUG_ON(system_state < SYSTEM_RUNNING);
> pr_err("Failed to start kswapd on node %d\n", nid);
> ret = PTR_ERR(pgdat->kswapd);
> pgdat->kswapd = NULL;
>
