Re: [PATCH] Linux Kernel Markers 0.7 for 2.6.17 (with type checking!)

From: Jeremy Fitzhardinge
Date: Thu Sep 21 2006 - 22:08:57 EST


Mathieu Desnoyers wrote:
#define MARK_SYM(name) \
do { \
__label__ here; \
volatile static void *__mark_kprobe_##name \
asm (MARK_CALL_PREFIX#name) \
__attribute__((unused)) = &&here; \
here: \
do { } while(0); \
} while(0)

Which fixes the problem. Some tests showed me that the compiler does not unroll
an otherwise unrolled loop when this specific macro is called. (test done with
-funroll-all-loops).

Eh? I thought you wanted to avoid changing the generated code? Inhibiting loop unrolling could be a pretty large change...

J
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