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authorChris Metcalf <cmetcalf@tilera.com>2012-10-23 13:30:54 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2012-10-23 16:23:58 -0400
commit6b14e4198c729b748a7f6d22059e6a101d2b241a (patch)
tree77668782763f74aec995899e919231e81a71d56a /arch/tile/kernel/sys.c
parent530550651fdfd548d25b6bd5ff4607803540508b (diff)
downloadop-kernel-dev-6b14e4198c729b748a7f6d22059e6a101d2b241a.zip
op-kernel-dev-6b14e4198c729b748a7f6d22059e6a101d2b241a.tar.gz
arch/tile: eliminate pt_regs trampolines for syscalls
Using the new current_pt_regs() model, we can remove some trampolines from assembly code and call directly to the C syscall implementations. rt_sigreturn() and clone() still need some assembly wrapping, but no longer are passed a pt_regs pointer. sigaltstack() and the tilepro-specific cmpxchg_badaddr() syscalls are now just straight C. Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel/sys.c')
-rw-r--r--arch/tile/kernel/sys.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/tile/kernel/sys.c b/arch/tile/kernel/sys.c
index 359e76f..02ff5c0 100644
--- a/arch/tile/kernel/sys.c
+++ b/arch/tile/kernel/sys.c
@@ -106,13 +106,11 @@ SYSCALL_DEFINE6(mmap, unsigned long, addr, unsigned long, len,
#define sys_readahead sys32_readahead
#endif
-/* Call the trampolines to manage pt_regs where necessary. */
-#define sys_sigaltstack _sys_sigaltstack
+/* Call the assembly trampolines where necessary. */
+#undef sys_rt_sigreturn
#define sys_rt_sigreturn _sys_rt_sigreturn
+#undef sys_clone
#define sys_clone _sys_clone
-#ifndef __tilegx__
-#define sys_cmpxchg_badaddr _sys_cmpxchg_badaddr
-#endif
/*
* Note that we can't include <linux/unistd.h> here since the header
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