[PATCH][2.6.10-rc1-mm4][1/4] perfctr x86 core updates

[Mikael Pettersson]

Part 1/4 of the perfctr interrupt fixes:
- Move perfctr_suspend_thread() call from __switch_to()
  to the beginning of switch_to(). Ensures that suspend
  actions are done when the owner task still is 'current'.

Signed-off-by: Mikael Pettersson <mikpe@xxxxxxxxx>

 arch/i386/kernel/process.c |    2 --
 include/asm-i386/system.h  |    1 +
 2 files changed, 1 insertion(+), 2 deletions(-)

diff -rupN linux-2.6.10-rc1-mm4/arch/i386/kernel/process.c linux-2.6.10-rc1-mm4.perfctr-x86-core-update/arch/i386/kernel/process.c
--- linux-2.6.10-rc1-mm4/arch/i386/kernel/process.c	2004-11-10 18:02:47.000000000 +0100
+++ linux-2.6.10-rc1-mm4.perfctr-x86-core-update/arch/i386/kernel/process.c	2004-11-11 00:19:11.294844304 +0100
@@ -600,8 +600,6 @@ struct task_struct fastcall * __switch_t
 
 	/* never put a printk in __switch_to... printk() calls wake_up*() indirectly */
 
-	perfctr_suspend_thread(prev);
-
 	__unlazy_fpu(prev_p);
 
 	/*
diff -rupN linux-2.6.10-rc1-mm4/include/asm-i386/system.h linux-2.6.10-rc1-mm4.perfctr-x86-core-update/include/asm-i386/system.h
--- linux-2.6.10-rc1-mm4/include/asm-i386/system.h	2004-10-28 19:28:41.000000000 +0200
+++ linux-2.6.10-rc1-mm4.perfctr-x86-core-update/include/asm-i386/system.h	2004-11-11 00:19:39.000000000 +0100
@@ -14,6 +14,7 @@ extern struct task_struct * FASTCALL(__s
 
 #define switch_to(prev,next,last) do {					\
 	unsigned long esi,edi;						\
+	perfctr_suspend_thread(&(prev)->thread);			\
 	asm volatile("pushfl\n\t"					\
 		     "pushl %%ebp\n\t"					\
 		     "movl %%esp,%0\n\t"	/* save ESP */		\
-
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