Messages in this thread |  | | | From | Paul Menage <> | | Subject | Re: [PATCH] Speedup SMP kernel on UP box | | Date | Sat, 16 Mar 2002 15:37:26 -0800 |
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In article <0C01A29FBAE24448A792F5C68F5EA47D238DE0@nasdaq.ms.ensim.com>, you write: >@@ -9,9 +9,15 @@ > */ > > #ifdef CONFIG_SMP >-#define LOCK "lock ; " >+#define LOCK "\n1:\tlock ; " >+#define LOCK_ADDR "\n" \ >+ ".section .lock.init,\"a\"\n\t" \ >+ ".align 4\n\t" \ >+ ".long 1b\n" \ >+ ".previous\n"
Why not do:
#define LOCK "1: lock ; \n" \ ".section .lock.init,\"a\"\n" \ ".align 4\n"\ ".long 1b\n"\ ".previous\n" Then you don't need the LOCK_ADDR macro, so most of atomic.h can be left as is. The assembler doesn't seem to care that there's a section change between the lock prefix and the instruction that it's locking.
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