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| author | David S. Miller <davem@davemloft.net> | 2010-08-18 09:49:26 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-08-18 09:49:26 +0400 |
| commit | 9b3bb86acabe0c05923cea1ed3b0bee9439fef4b (patch) | |
| tree | 44095535e5f2634c319122b718c8998ee3b52511 /arch/sparc/lib/Makefile | |
| parent | b10f997bb0f4e5b34d447f498fb85834a40d3acb (diff) | |
| download | linux-9b3bb86acabe0c05923cea1ed3b0bee9439fef4b.tar.xz | |
sparc64: Make rwsems 64-bit.
Basically tip-off the powerpc code, use a 64-bit type and atomic64_t
interfaces for the implementation.
This gets us off of the by-hand asm code I wrote, which frankly I
think probably ruins I-cache hit rates.
The idea was the keep the call chains less deep, but anything taking
the rw-semaphores probably is also calling other stuff and therefore
already has allocated a stack-frame. So no real stack frame savings
ever.
Ben H. has posted patches to make powerpc use 64-bit too and with some
abstractions we can probably use a shared header file somewhere.
With suggestions from Sam Ravnborg.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib/Makefile')
| -rw-r--r-- | arch/sparc/lib/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc/lib/Makefile b/arch/sparc/lib/Makefile index c4b5e03af115..846d1c4374ea 100644 --- a/arch/sparc/lib/Makefile +++ b/arch/sparc/lib/Makefile @@ -15,7 +15,7 @@ lib-$(CONFIG_SPARC32) += divdi3.o udivdi3.o lib-$(CONFIG_SPARC32) += copy_user.o locks.o lib-y += atomic_$(BITS).o lib-$(CONFIG_SPARC32) += lshrdi3.o ashldi3.o -lib-y += rwsem_$(BITS).o +lib-$(CONFIG_SPARC32) += rwsem_32.o lib-$(CONFIG_SPARC32) += muldi3.o bitext.o cmpdi2.o lib-$(CONFIG_SPARC64) += copy_page.o clear_page.o bzero.o |