linux-kernel - [tip:irq/urgent] sparc: Use preempt_schedule

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Message-ID: <tip-9385d949d5bd0eb642ed05ea263c3638c9f4e372@git.kernel.org>
Date:	Wed, 13 Nov 2013 11:43:15 -0800
From:	tip-bot for Thomas Gleixner <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	tglx@...utronix.de, davem@...emloft.net
Subject: [tip:irq/urgent] sparc: Use preempt_schedule_irq

Commit-ID:  9385d949d5bd0eb642ed05ea263c3638c9f4e372
Gitweb:     http://git.kernel.org/tip/9385d949d5bd0eb642ed05ea263c3638c9f4e372
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Tue, 17 Sep 2013 18:53:08 +0000
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Wed, 13 Nov 2013 20:21:47 +0100

sparc: Use preempt_schedule_irq

The low level preemption code fiddles with the PREEMPT_ACTIVE bit for
no reason and calls schedule() with interrupts disabled, which is
wrong to begin with. Remove the PREEMPT_ACTIVE fiddling and call the
proper schedule_preempt_irq() function.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: David S. Miller <davem@...emloft.net>
Cc: sparclinux@...r.kernel.org
Link: http://lkml.kernel.org/r/20130917183628.966769884@linutronix.de

---
 arch/sparc/kernel/rtrap_64.S | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S
index afa2a9e..76213db 100644
--- a/arch/sparc/kernel/rtrap_64.S
+++ b/arch/sparc/kernel/rtrap_64.S
@@ -306,12 +306,10 @@ to_kernel:
 		 nop
 		cmp			%l4, 0
 		bne,pn			%xcc, kern_fpucheck
-		 sethi			%hi(PREEMPT_ACTIVE), %l6
-		stw			%l6, [%g6 + TI_PRE_COUNT]
-		call			schedule
+		 nop
+		call			preempt_schedule_irq
 		 nop
 		ba,pt			%xcc, rtrap
-		 stw			%g0, [%g6 + TI_PRE_COUNT]
 #endif
 kern_fpucheck:	ldub			[%g6 + TI_FPDEPTH], %l5
 		brz,pt			%l5, rt_continue
--
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