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

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>

diff --git a/arch/um/include/longjmp.h b/arch/um/include/longjmp.h
index 50f5df1..018b381 100644 (file)
--- a/arch/um/include/longjmp.h
+++ b/arch/um/include/longjmp.h
@@ -5,13 +5,13 @@
 #include "os.h"
 
 #define UML_SIGLONGJMP(buf, val) do { \
-       siglongjmp(*buf, val);          \
+       longjmp(*buf, val);     \
 } while(0)
 
 #define UML_SIGSETJMP(buf, enable) ({ \
        int n; \
        enable = get_signals(); \
-       n = sigsetjmp(*buf, 1); \
+       n = setjmp(*buf); \
        if(n != 0) \
                set_signals(enable); \
        n; })