linux-kernel - [RFC PATCH v3 4/5] powerpc: Use the new schedule

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Date:	Mon, 13 May 2013 13:21:32 +0800
From:	Li Zhong <zhong@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	linuxppc-dev@...ts.ozlabs.org, paulmck@...ux.vnet.ibm.com,
	fweisbec@...il.com, benh@...nel.crashing.org, paulus@...ba.org,
	michael@...erman.id.au, Li Zhong <zhong@...ux.vnet.ibm.com>
Subject: [RFC PATCH v3 4/5] powerpc: Use the new schedule_user API on userspace preemption

This patch corresponds to
[PATCH] x86: Use the new schedule_user API on userspace preemption
  commit 0430499ce9d78691f3985962021b16bf8f8a8048

Signed-off-by: Li Zhong <zhong@...ux.vnet.ibm.com>
---
 arch/powerpc/include/asm/context_tracking.h |   10 ++++++++++
 arch/powerpc/kernel/entry_64.S              |    3 ++-
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 arch/powerpc/include/asm/context_tracking.h

diff --git a/arch/powerpc/include/asm/context_tracking.h b/arch/powerpc/include/asm/context_tracking.h
new file mode 100644
index 0000000..b6f5a33
--- /dev/null
+++ b/arch/powerpc/include/asm/context_tracking.h
@@ -0,0 +1,10 @@
+#ifndef _ASM_POWERPC_CONTEXT_TRACKING_H
+#define _ASM_POWERPC_CONTEXT_TRACKING_H
+
+#ifdef CONFIG_CONTEXT_TRACKING
+#define SCHEDULE_USER bl	.schedule_user
+#else
+#define SCHEDULE_USER bl	.schedule
+#endif
+
+#endif
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S
index 915fbb4..d418977 100644
--- a/arch/powerpc/kernel/entry_64.S
+++ b/arch/powerpc/kernel/entry_64.S
@@ -33,6 +33,7 @@
 #include <asm/irqflags.h>
 #include <asm/ftrace.h>
 #include <asm/hw_irq.h>
+#include <asm/context_tracking.h>
 
 /*
  * System calls.
@@ -634,7 +635,7 @@ _GLOBAL(ret_from_except_lite)
 	andi.	r0,r4,_TIF_NEED_RESCHED
 	beq	1f
 	bl	.restore_interrupts
-	bl	.schedule
+	SCHEDULE_USER
 	b	.ret_from_except_lite
 
 1:	bl	.save_nvgprs
-- 
1.7.9.5

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