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Commit f0af911a authored by Torben Hohn's avatar Torben Hohn Committed by Thomas Gleixner
Browse files

time: Provide xtime_update() 



xtime_update() takes xtime_lock write locked and calls
do_timer(). Provided to replace the do_timer() calls in the
architecture code.

Signed-off-by: default avatarTorben Hohn <torbenh@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: johnstul@us.ibm.com
Cc: yong.zhang0@gmail.com
Cc: hch@infradead.org
LKML-Reference: <20110127145910.23248.21379.stgit@localhost>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 79ecaf0d

include/linux/sched.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -2050,6 +2050,7 @@ extern void release_uids(struct user_namespace *ns); 
#include <asm/current.h>

#include <asm/current.h>





extern void do_timer(unsigned long ticks);

extern void do_timer(unsigned long ticks);

extern void xtime_update(unsigned long ticks);





extern int wake_up_state(struct task_struct *tsk, unsigned int state);

extern int wake_up_state(struct task_struct *tsk, unsigned int state);

extern int wake_up_process(struct task_struct *tsk);

extern int wake_up_process(struct task_struct *tsk);

kernel/time/timekeeping.c

+13 −0
Original line number Original line Diff line number Diff line
@@ -969,3 +969,16 @@ void get_xtime_and_monotonic_offset(struct timespec *xtim, struct timespec *wtom 
		*wtom = wall_to_monotonic;

		*wtom = wall_to_monotonic;

	} while (read_seqretry(&xtime_lock, seq));

	} while (read_seqretry(&xtime_lock, seq));

}

}



/**

 * xtime_update() - advances the timekeeping infrastructure

 * @ticks:	number of ticks, that have elapsed since the last call.

 *

 * Must be called with interrupts disabled.

 */

void xtime_update(unsigned long ticks)

{

	write_seqlock(&xtime_lock);

	do_timer(ticks);

	write_sequnlock(&xtime_lock);

}