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author | rwatson <rwatson@FreeBSD.org> | 2004-07-27 16:41:01 +0000 |
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committer | rwatson <rwatson@FreeBSD.org> | 2004-07-27 16:41:01 +0000 |
commit | 4ab080249a9f183254e39905e915442e3e7490d1 (patch) | |
tree | de9f7b08c7ab02bd97e32e53b40a626c8216f214 /sys/powerpc | |
parent | 8feaacec0cd088d29781dc3559e0d2adef8602a3 (diff) | |
download | FreeBSD-src-4ab080249a9f183254e39905e915442e3e7490d1.zip FreeBSD-src-4ab080249a9f183254e39905e915442e3e7490d1.tar.gz |
Pass a thread argument into cpu_critical_{enter,exit}() rather than
dereference curthread. It is called only from critical_{enter,exit}(),
which already dereferences curthread. This doesn't seem to affect SMP
performance in my benchmarks, but improves MySQL transaction throughput
by about 1% on UP on my Xeon.
Head nodding: jhb, bmilekic
Diffstat (limited to 'sys/powerpc')
-rw-r--r-- | sys/powerpc/include/critical.h | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/sys/powerpc/include/critical.h b/sys/powerpc/include/critical.h index 7e0eace..93a177b 100644 --- a/sys/powerpc/include/critical.h +++ b/sys/powerpc/include/critical.h @@ -56,10 +56,9 @@ void cpu_critical_fork_exit(void); */ static __inline void -cpu_critical_enter(void) +cpu_critical_enter(struct thread *td) { u_int msr; - struct thread *td = curthread; msr = mfmsr(); td->td_md.md_savecrit = msr; @@ -75,9 +74,8 @@ cpu_critical_enter(void) * exiting the last critical section. */ static __inline void -cpu_critical_exit(void) +cpu_critical_exit(struct thread *td) { - struct thread *td = curthread; mtmsr(td->td_md.md_savecrit); } @@ -85,8 +83,8 @@ cpu_critical_exit(void) #else /* !__GNUC__ */ -void cpu_critical_enter(void); -void cpu_critical_exit(void); +void cpu_critical_enter(struct thread *td); +void cpu_critical_exit(struct thread *td); #endif /* __GNUC__ */ |