x86, tracing: add notrace to asm-x86/linkage.h

notrace signals that a function should not be traced. Most of the time this is used by tracers to annotate code that cannot be traced - it's in a volatile state (such as in user vdso context or NMI context) or it's in the tracer internals. Signed-off-by: Ingo Molnar <mingo@elte.hu>
mariux64 · Apr 17, 2008 · 78a9909 · 78a9909
1 parent 11ae9dd
commit 78a9909
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/include/asm-x86/linkage.h b/include/asm-x86/linkage.h
@@ -1,6 +1,9 @@
 #ifndef __ASM_LINKAGE_H
 #define __ASM_LINKAGE_H
 
+#undef notrace
+#define notrace __attribute__((no_instrument_function))
+
 #ifdef CONFIG_X86_64
 #define __ALIGN .p2align 4,,15
 #define __ALIGN_STR ".p2align 4,,15"