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authorMatthew Wilcox <matthew@wil.cx>2008-03-07 21:55:58 -0500
committerMatthew Wilcox <willy@linux.intel.com>2008-04-17 10:42:34 -0400
commit64ac24e738823161693bf791f87adc802cf529ff (patch)
tree19c0b0cf314d4394ca580c05b86cdf874ce0a167 /arch/x86/lib
parente48b3deee475134585eed03e7afebe4bf9e0dba9 (diff)
Generic semaphore implementation
Semaphores are no longer performance-critical, so a generic C implementation is better for maintainability, debuggability and extensibility. Thanks to Peter Zijlstra for fixing the lockdep warning. Thanks to Harvey Harrison for pointing out that the unlikely() was unnecessary. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Acked-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/lib')
-rw-r--r--arch/x86/lib/semaphore_32.S83
-rw-r--r--arch/x86/lib/thunk_64.S5
2 files changed, 0 insertions, 88 deletions
diff --git a/arch/x86/lib/semaphore_32.S b/arch/x86/lib/semaphore_32.S
index 3899bd37fdf..648fe474178 100644
--- a/arch/x86/lib/semaphore_32.S
+++ b/arch/x86/lib/semaphore_32.S
@@ -30,89 +30,6 @@
* value or just clobbered..
*/
.section .sched.text, "ax"
-ENTRY(__down_failed)
- CFI_STARTPROC
- FRAME
- pushl %edx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET edx,0
- pushl %ecx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET ecx,0
- call __down
- popl %ecx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE ecx
- popl %edx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE edx
- ENDFRAME
- ret
- CFI_ENDPROC
- ENDPROC(__down_failed)
-
-ENTRY(__down_failed_interruptible)
- CFI_STARTPROC
- FRAME
- pushl %edx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET edx,0
- pushl %ecx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET ecx,0
- call __down_interruptible
- popl %ecx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE ecx
- popl %edx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE edx
- ENDFRAME
- ret
- CFI_ENDPROC
- ENDPROC(__down_failed_interruptible)
-
-ENTRY(__down_failed_trylock)
- CFI_STARTPROC
- FRAME
- pushl %edx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET edx,0
- pushl %ecx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET ecx,0
- call __down_trylock
- popl %ecx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE ecx
- popl %edx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE edx
- ENDFRAME
- ret
- CFI_ENDPROC
- ENDPROC(__down_failed_trylock)
-
-ENTRY(__up_wakeup)
- CFI_STARTPROC
- FRAME
- pushl %edx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET edx,0
- pushl %ecx
- CFI_ADJUST_CFA_OFFSET 4
- CFI_REL_OFFSET ecx,0
- call __up
- popl %ecx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE ecx
- popl %edx
- CFI_ADJUST_CFA_OFFSET -4
- CFI_RESTORE edx
- ENDFRAME
- ret
- CFI_ENDPROC
- ENDPROC(__up_wakeup)
/*
* rw spinlock fallbacks
diff --git a/arch/x86/lib/thunk_64.S b/arch/x86/lib/thunk_64.S
index 8b92d428ab0..e009251d4e9 100644
--- a/arch/x86/lib/thunk_64.S
+++ b/arch/x86/lib/thunk_64.S
@@ -41,11 +41,6 @@
thunk rwsem_downgrade_thunk,rwsem_downgrade_wake
#endif
- thunk __down_failed,__down
- thunk_retrax __down_failed_interruptible,__down_interruptible
- thunk_retrax __down_failed_trylock,__down_trylock
- thunk __up_wakeup,__up
-
#ifdef CONFIG_TRACE_IRQFLAGS
thunk trace_hardirqs_on_thunk,trace_hardirqs_on
thunk trace_hardirqs_off_thunk,trace_hardirqs_off