DESCRIPTION:
----------------------------------------------
## lnxi-patch-6 ##
src/include/smp/spinlock.h
src/cpu/x86/tsc/delay_tsc.c
cpu_relax() gets called unconditionally.
DIFFSTAT:
-----------------------------------------------
cpu/x86/tsc/delay_tsc.c | 4 ----
include/smp/spinlock.h | 1 +
2 files changed, 1 insertion(+), 4 deletions(-)
PATCH:
-----------------------------------------------
Index: lnxi-merge/src/include/smp/spinlock.h
===================================================================
--- lnxi-merge/src/include/smp/spinlock.h (revision 1105)
+++ lnxi-merge/src/include/smp/spinlock.h (working copy)
@@ -19,6 +19,7 @@
#define spin_unlock_wait(lock) do {} while(0)
#define spin_lock(lock) do {} while(0)
#define spin_unlock(lock) do {} while(0)
+#define cpu_relax() do {} while(0)
#endif
#endif /* SMP_SPINLOCK_H */
Index: lnxi-merge/src/cpu/x86/tsc/delay_tsc.c
===================================================================
--- lnxi-merge/src/cpu/x86/tsc/delay_tsc.c (revision 1105)
+++ lnxi-merge/src/cpu/x86/tsc/delay_tsc.c (working copy)
@@ -159,11 +159,7 @@
count = rdtscll();
stop = clocks + count;
while(stop > count) {
-#ifdef CONFIG_SMP
-#if CONFIG_SMP == 1
cpu_relax();
-#endif
-#endif
count = rdtscll();
}
}
-----------------------------------------------
--jason--
--
Jason W. Schildt
LinuxBIOS Software Engineer
Linux Networx
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