From: Jeff Dike <jdike@addtoit.com>
Date: Thu, 19 Jan 2006 01:42:50 +0000 (-0800)
Subject: [PATCH] uml: use setjmp/longjmp instead of sigsetjmp/siglongjmp
X-Git-Tag: v3.12-rc1~39090
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c83d4635ee8c8fe16046ff6cabcff708be16df75;p=kernel%2Fkernel-generic.git

[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
--- 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; })