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authorRalf Baechle <ralf@linux-mips.org>2009-09-17 02:25:05 +0200
committerRalf Baechle <ralf@linux-mips.org>2009-09-17 20:07:49 +0200
commitf4c6b6bc5a4fc8d607f2d89369008c85a3a12a8b (patch)
treebfcde115df6f7712b3c3356d608ae3a29c01a7c9
parent6eb10bc9e2deab06630261cd05c4cb1e9a60e980 (diff)
MIPS: Consolidate all CONFIG_CPU_HAS_LLSC use in a single C file.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/include/asm/system.h12
-rw-r--r--arch/mips/kernel/octeon_switch.S3
-rw-r--r--arch/mips/kernel/r2300_switch.S3
-rw-r--r--arch/mips/kernel/r4k_switch.S3
4 files changed, 12 insertions, 9 deletions
diff --git a/arch/mips/include/asm/system.h b/arch/mips/include/asm/system.h
index cd30f83235b..a2e9239b45a 100644
--- a/arch/mips/include/asm/system.h
+++ b/arch/mips/include/asm/system.h
@@ -63,11 +63,23 @@ do { \
#define __mips_mt_fpaff_switch_to(prev) do { (void) (prev); } while (0)
#endif
+#ifdef CONFIG_CPU_HAS_LLSC
+#define __clear_software_ll_bit() do { } while (0)
+#else
+extern unsigned long ll_bit;
+
+#define __clear_software_ll_bit() \
+do { \
+ ll_bit = 0; \
+} while (0)
+#endif
+
#define switch_to(prev, next, last) \
do { \
__mips_mt_fpaff_switch_to(prev); \
if (cpu_has_dsp) \
__save_dsp(prev); \
+ __clear_software_ll_bit(); \
(last) = resume(prev, next, task_thread_info(next)); \
} while (0)
diff --git a/arch/mips/kernel/octeon_switch.S b/arch/mips/kernel/octeon_switch.S
index d52389672b0..3952b8323ef 100644
--- a/arch/mips/kernel/octeon_switch.S
+++ b/arch/mips/kernel/octeon_switch.S
@@ -36,9 +36,6 @@
.align 7
LEAF(resume)
.set arch=octeon
-#ifndef CONFIG_CPU_HAS_LLSC
- sw zero, ll_bit
-#endif
mfc0 t1, CP0_STATUS
LONG_S t1, THREAD_STATUS(a0)
cpu_save_nonscratch a0
diff --git a/arch/mips/kernel/r2300_switch.S b/arch/mips/kernel/r2300_switch.S
index 656bde2e11b..698414b7a25 100644
--- a/arch/mips/kernel/r2300_switch.S
+++ b/arch/mips/kernel/r2300_switch.S
@@ -46,9 +46,6 @@
* struct thread_info *next_ti) )
*/
LEAF(resume)
-#ifndef CONFIG_CPU_HAS_LLSC
- sw zero, ll_bit
-#endif
mfc0 t1, CP0_STATUS
sw t1, THREAD_STATUS(a0)
cpu_save_nonscratch a0
diff --git a/arch/mips/kernel/r4k_switch.S b/arch/mips/kernel/r4k_switch.S
index d9bfae53c43..8893ee1a236 100644
--- a/arch/mips/kernel/r4k_switch.S
+++ b/arch/mips/kernel/r4k_switch.S
@@ -45,9 +45,6 @@
*/
.align 5
LEAF(resume)
-#ifndef CONFIG_CPU_HAS_LLSC
- sw zero, ll_bit
-#endif
mfc0 t1, CP0_STATUS
LONG_S t1, THREAD_STATUS(a0)
cpu_save_nonscratch a0