linux-kernel - [PATCH 11/11] arm: add low level IRQ timestamps recording for arm platforms.

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Date:	Wed,  2 Dec 2009 18:18:49 +0100
From:	Rodolfo Giometti <giometti@...ux.it>
To:	linux-kernel@...r.kernel.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	David Woodhouse <dwmw2@...radead.org>,
	Dave Jones <davej@...hat.com>, Sam Ravnborg <sam@...nborg.org>,
	Greg KH <greg@...ah.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	Kay Sievers <kay.sievers@...y.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...e.hu>,
	Michael Kerrisk <mtk.manpages@...il.com>,
	Christoph Hellwig <hch@...radead.org>,
	Rodolfo Giometti <giometti@...ux.it>
Subject: [PATCH 11/11] arm: add low level IRQ timestamps recording for arm platforms.

Signed-off-by: Rodolfo Giometti <giometti@...ux.it>
---
 arch/arm/kernel/irq.c |    2 ++
 drivers/pps/Kconfig   |    2 +-
 2 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index c9a8619..4708db2 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -109,6 +109,8 @@ asmlinkage void __exception asm_do_IRQ(unsigned int irq, struct pt_regs *regs)
 
 	irq_enter();
 
+	irq_save_ts(irq);
+
 	/*
 	 * Some hardware gives randomly wrong interrupts.  Rather
 	 * than crashing, do something sensible.
diff --git a/drivers/pps/Kconfig b/drivers/pps/Kconfig
index 6e8a2aa..dcef32e 100644
--- a/drivers/pps/Kconfig
+++ b/drivers/pps/Kconfig
@@ -24,7 +24,7 @@ config PPS
 
 config PPS_IRQ_EVENTS
 	bool "Use low level IRQ timestamps"
-	depends on PPS && (X86_32 || X86_64)
+	depends on PPS && (X86_32 || X86_64 || ARM)
 	default no
 	help
 	  Say Y here if you wish using low level IRQ timestamps to register
-- 
1.6.3.3

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