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Commit 33e638b9 authored by Srivatsa S. Bhat's avatar Srivatsa S. Bhat Committed by Rafael J. Wysocki
Browse files

PM / Sleep: Use the freezer_count() functions in [un]lock_system_sleep() APIs 



Now that freezer_count() and freezer_do_not_count() don't have the restriction
that they are effective only when called by userspace processes, use
them in lock_system_sleep() and unlock_system_sleep() instead of open-coding
their parts.

Signed-off-by: default avatarSrivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Acked-by: default avatarTejun Heo <tj@kernel.org>
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
parent 43753e58

include/linux/suspend.h

+3 −4
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 
#include <linux/init.h>

#include <linux/pm.h>

#include <linux/mm.h>

#include <linux/freezer.h>

#include <asm/errno.h>



#ifdef CONFIG_VT
@@ -380,16 +381,14 @@ static inline void unlock_system_sleep(void) {} 


static inline void lock_system_sleep(void)

{

	/* simplified freezer_do_not_count() */

	current->flags |= PF_FREEZER_SKIP;

	freezer_do_not_count();

	mutex_lock(&pm_mutex);

}



static inline void unlock_system_sleep(void)

{

	mutex_unlock(&pm_mutex);

	/* simplified freezer_count() */

	current->flags &= ~PF_FREEZER_SKIP;

	freezer_count();

}

#endif