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authorCatalin Marinas <catalin.marinas@arm.com>2013-03-21 16:28:47 +0000
committerCatalin Marinas <catalin.marinas@arm.com>2013-03-21 17:39:31 +0000
commit62479586532715b6da4777374a6f53b32453385e (patch)
tree232004eb56bf36b966ea11ec8295a1b2893ac9e9 /arch/arm64/kernel
parent2b8cac814cd5a0a305d62dcd1d589faccb705a4d (diff)
downloadop-kernel-dev-62479586532715b6da4777374a6f53b32453385e.zip
op-kernel-dev-62479586532715b6da4777374a6f53b32453385e.tar.gz
arm64: klib: Optimised atomic bitops
This patch implements the AArch64-specific atomic bitops functions using exclusive memory accesses to avoid locking. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel')
-rw-r--r--arch/arm64/kernel/arm64ksyms.c13
1 files changed, 8 insertions, 5 deletions
diff --git a/arch/arm64/kernel/arm64ksyms.c b/arch/arm64/kernel/arm64ksyms.c
index a5d0d46..7df1aad 100644
--- a/arch/arm64/kernel/arm64ksyms.c
+++ b/arch/arm64/kernel/arm64ksyms.c
@@ -39,11 +39,6 @@ EXPORT_SYMBOL(__copy_from_user);
EXPORT_SYMBOL(__copy_to_user);
EXPORT_SYMBOL(__clear_user);
- /* bitops */
-#ifdef CONFIG_SMP
-EXPORT_SYMBOL(__atomic_hash);
-#endif
-
/* physical memory */
EXPORT_SYMBOL(memstart_addr);
@@ -54,3 +49,11 @@ EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(memmove);
EXPORT_SYMBOL(memchr);
+
+ /* atomic bitops */
+EXPORT_SYMBOL(set_bit);
+EXPORT_SYMBOL(test_and_set_bit);
+EXPORT_SYMBOL(clear_bit);
+EXPORT_SYMBOL(test_and_clear_bit);
+EXPORT_SYMBOL(change_bit);
+EXPORT_SYMBOL(test_and_change_bit);
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