linux-kernel - [PATCH v2 19/20] xtensa: switch do_timer() to xtime

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Date:	Thu, 27 Jan 2011 16:00:27 +0100
From:	Torben Hohn <torbenh@....de>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Chris Zankel <chris@...kel.net>,
	Peter Zijlstra <peterz@...radead.org>, johnstul@...ibm.com,
	hch@...radead.org, yong.zhang0@...il.com,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH v2 19/20] xtensa: switch do_timer() to xtime_update()

xtime_update() takes the xtime_lock itself.

set_linux_timer() does not need to be protected by a lock.

Cc: Chris Zankel <chris@...kel.net>
Signed-off-by: Torben Hohn <torbenh@....de>
---
 arch/xtensa/kernel/time.c |    6 +-----
 1 files changed, 1 insertions(+), 5 deletions(-)

diff --git a/arch/xtensa/kernel/time.c b/arch/xtensa/kernel/time.c
index 19df764..f3e5eb4 100644
--- a/arch/xtensa/kernel/time.c
+++ b/arch/xtensa/kernel/time.c
@@ -96,16 +96,12 @@ again:
 		update_process_times(user_mode(get_irq_regs()));
 #endif
 
-		write_seqlock(&xtime_lock);
-
-		do_timer(1); /* Linux handler in kernel/timer.c */
+		xtime_update(1); /* Linux handler in kernel/time/timekeeping */
 
 		/* Note that writing CCOMPARE clears the interrupt. */
 
 		next += CCOUNT_PER_JIFFY;
 		set_linux_timer(next);
-
-		write_sequnlock(&xtime_lock);
 	}
 
 	/* Allow platform to do something useful (Wdog). */

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