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| author | sobomax <sobomax@FreeBSD.org> | 2006-12-06 18:27:17 +0000 |
|---|---|---|
| committer | sobomax <sobomax@FreeBSD.org> | 2006-12-06 18:27:17 +0000 |
| commit | 8563c840b54263435c65ca68a111163dce90d536 (patch) | |
| tree | 7daea6c332cae5d30819932cee2a402537fe261e /sys/amd64 | |
| parent | 3ed6c23aa47d2d8933109e620bd517b6fc1fff8e (diff) | |
| download | FreeBSD-src-8563c840b54263435c65ca68a111163dce90d536.zip FreeBSD-src-8563c840b54263435c65ca68a111163dce90d536.tar.gz | |
Allow machdep.cpu_idle_hlt to be set from the loader. This should allow
to workaround the problem with SMP kernels on Turion64 X2 processors
described in kern/104678 and may be useful in other situations too.
MFC after: 3 days
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/machdep.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/amd64/amd64/machdep.c b/sys/amd64/amd64/machdep.c index 348bfef..c7dd71f 100644 --- a/sys/amd64/amd64/machdep.c +++ b/sys/amd64/amd64/machdep.c @@ -514,6 +514,7 @@ cpu_halt(void) * help lock contention somewhat, and this is critical for HTT. -Peter */ static int cpu_idle_hlt = 1; +TUNABLE_INT("machdep.cpu_idle_hlt", &cpu_idle_hlt); SYSCTL_INT(_machdep, OID_AUTO, cpu_idle_hlt, CTLFLAG_RW, &cpu_idle_hlt, 0, "Idle loop HLT enable"); |
