X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=arch%2Fmips%2Fkernel%2Fentry.S;h=0b78fcbf044ab563453850fe8d404ca3615b6053;hb=6e96783f586cc0a64651087cb518209a8577123f;hp=01e7fa86aa43d588b7ed8d8e70af403067d2c9e2;hpb=51bece910d2b0aca64cd3dee9fa2a8aa7feeadd9;p=linux-2.6-omap-h63xx.git

diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S
index 01e7fa86aa4..0b78fcbf044 100644
--- a/arch/mips/kernel/entry.S
+++ b/arch/mips/kernel/entry.S
@@ -20,21 +20,22 @@
 #include <asm/mipsmtregs.h>
 #endif
 
-#ifdef CONFIG_PREEMPT
-	.macro	preempt_stop
-	.endm
-#else
-	.macro	preempt_stop
-	local_irq_disable
-	.endm
+#ifndef CONFIG_PREEMPT
 #define resume_kernel	restore_all
+#else
+#define __ret_from_irq	ret_from_exception
 #endif
 
 	.text
 	.align	5
+#ifndef CONFIG_PREEMPT
 FEXPORT(ret_from_exception)
-	preempt_stop
+	local_irq_disable			# preempt stop
+	b	__ret_from_irq
+#endif
 FEXPORT(ret_from_irq)
+	LONG_S	s0, TI_REGS($28)
+FEXPORT(__ret_from_irq)
 	LONG_L	t0, PT_STATUS(sp)		# returning to kernel mode?
 	andi	t0, t0, KU_USER
 	beqz	t0, resume_kernel
@@ -79,8 +80,10 @@ FEXPORT(syscall_exit)
 FEXPORT(restore_all)			# restore full frame
 #ifdef CONFIG_MIPS_MT_SMTC
 /* Detect and execute deferred IPI "interrupts" */
-	move	a0,sp
+	LONG_L	s0, TI_REGS($28)
+	LONG_S	sp, TI_REGS($28)
 	jal	deferred_smtc_ipi
+	LONG_S	s0, TI_REGS($28)
 /* Re-arm any temporarily masked interrupts not explicitly "acked" */
 	mfc0	v0, CP0_TCSTATUS
 	ori	v1, v0, TCSTATUS_IXMT
@@ -113,6 +116,21 @@ FEXPORT(restore_all)			# restore full frame
 	RESTORE_AT
 	RESTORE_STATIC
 FEXPORT(restore_partial)		# restore partial frame
+#ifdef CONFIG_TRACE_IRQFLAGS
+	SAVE_STATIC
+	SAVE_AT
+	SAVE_TEMP
+	LONG_L	v0, PT_STATUS(sp)
+	and	v0, 1
+	beqz	v0, 1f
+	jal	trace_hardirqs_on
+	b	2f
+1:	jal	trace_hardirqs_off
+2:
+	RESTORE_TEMP
+	RESTORE_AT
+	RESTORE_STATIC
+#endif
 	RESTORE_SOME
 	RESTORE_SP_AND_RET
 	.set	at