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Allow machdep.cpu_idle_hlt to be set from the loader. This should allow

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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
This commit is contained in:
sobomax 2006-12-06 18:27:17 +00:00
parent 3ed6c23aa4
commit 8563c840b5
3 changed files with 3 additions and 0 deletions
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1
sys/amd64/amd64/machdep.c
View File

@ -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");

1
sys/i386/i386/machdep.c
View File

@ -1112,6 +1112,7 @@ 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");

1
sys/pc98/pc98/machdep.c
View File

@ -1109,6 +1109,7 @@ 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");