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[PATCH] uml: use setjmp/longjmp instead of sigsetjmp/siglongjmp

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Now that we are doing soft interrupts, there's no point in using sigsetjmp and
siglongjmp.  Using setjmp and longjmp saves a sigprocmask on every jump.

Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jeff Dike 2006-01-18 17:42:50 -08:00 committed by Linus Torvalds
parent 1d7173baf2
commit c83d4635ee
1 changed files with 2 additions and 2 deletions
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4
arch/um/include/longjmp.h
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@ -5,13 +5,13 @@
#include "os.h" #include "os.h"
#define UML_SIGLONGJMP(buf, val) do { \ #define UML_SIGLONGJMP(buf, val) do { \
siglongjmp(*buf, val); \ longjmp(*buf, val); \
} while(0) } while(0)
#define UML_SIGSETJMP(buf, enable) ({ \ #define UML_SIGSETJMP(buf, enable) ({ \
int n; \ int n; \
enable = get_signals(); \ enable = get_signals(); \
n = sigsetjmp(*buf, 1); \ n = setjmp(*buf); \
if(n != 0) \ if(n != 0) \
set_signals(enable); \ set_signals(enable); \
n; }) n; })