[PATCH] lockmeter does not require CONFIG_X86_TSC

From: Martin J. Bligh
Date: Sat Dec 27 2003 - 20:28:41 EST


Due to the extreme twistedness of the world, CONFIG_X86_TSC doesn't
mean "I have a TSC", it means "I compiled out PIT support completely".
Don't ask me why.

However, this means that the check for it in the lockmeter code is
invalid - it's perfectly valid to use a i386 compiled kernel on a 686,
where CONFIG_X86_TSC is off, but we have both TSC and PIT support.

Patch simply removes the #error check.

M.

diff -urpN -X /home/fletch/.diff.exclude 620-force_wholefrag/include/asm-i386/lockmeter.h 630-lockmeter_notsc/include/asm-i386/lockmeter.h
--- 620-force_wholefrag/include/asm-i386/lockmeter.h Sat Dec 27 14:43:41 2003
+++ 630-lockmeter_notsc/include/asm-i386/lockmeter.h Sat Dec 27 17:16:58 2003
@@ -108,9 +108,6 @@ extern inline int rwlock_readers(rwlock_
/* this is a lot of typing just to get gcc to emit "rdtsc" */
static inline long long get_cycles64 (void)
{
-#ifndef CONFIG_X86_TSC
- #error this code requires CONFIG_X86_TSC
-#else
union longlong_u {
long long intlong;
struct intint_s {
@@ -121,7 +118,6 @@ static inline long long get_cycles64 (vo

rdtsc(longlong.intint.eax,longlong.intint.edx);
return longlong.intlong;
-#endif
}

#endif /* _I386_LOCKMETER_H */

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/