svn commit: r218221 - head/sys/x86/x86
John Baldwin
jhb at FreeBSD.org
Thu Feb 3 13:09:22 UTC 2011
Author: jhb
Date: Thu Feb 3 13:09:22 2011
New Revision: 218221
URL: http://svn.freebsd.org/changeset/base/218221
Log:
Use a dedicated taskqueue with a thread that runs at a software-interrupt
priority for the periodic polling of the machine check registers.
Modified:
head/sys/x86/x86/mca.c
Modified: head/sys/x86/x86/mca.c
==============================================================================
--- head/sys/x86/x86/mca.c Thu Feb 3 12:19:07 2011 (r218220)
+++ head/sys/x86/x86/mca.c Thu Feb 3 13:09:22 2011 (r218221)
@@ -105,6 +105,7 @@ SYSCTL_INT(_hw_mca, OID_AUTO, erratum383
static STAILQ_HEAD(, mca_internal) mca_records;
static struct callout mca_timer;
static int mca_ticks = 3600; /* Check hourly by default. */
+static struct taskqueue *mca_tq;
static struct task mca_task;
static struct mtx mca_lock;
@@ -606,7 +607,7 @@ static void
mca_periodic_scan(void *arg)
{
- taskqueue_enqueue(taskqueue_thread, &mca_task);
+ taskqueue_enqueue(mca_tq, &mca_task);
callout_reset(&mca_timer, mca_ticks * hz, mca_periodic_scan, NULL);
}
@@ -620,7 +621,7 @@ sysctl_mca_scan(SYSCTL_HANDLER_ARGS)
if (error)
return (error);
if (i)
- taskqueue_enqueue(taskqueue_thread, &mca_task);
+ taskqueue_enqueue(mca_tq, &mca_task);
return (0);
}
@@ -631,6 +632,9 @@ mca_startup(void *dummy)
if (!mca_enabled || !(cpu_feature & CPUID_MCA))
return;
+ mca_tq = taskqueue_create("mca", M_WAITOK, taskqueue_thread_enqueue,
+ &mca_tq);
+ taskqueue_start_threads(&mca_tq, 1, PI_SWI(SWI_TQ), "mca taskq");
callout_reset(&mca_timer, mca_ticks * hz, mca_periodic_scan,
NULL);
}
@@ -670,7 +674,7 @@ mca_setup(uint64_t mcg_cap)
mtx_init(&mca_lock, "mca", NULL, MTX_SPIN);
STAILQ_INIT(&mca_records);
- TASK_INIT(&mca_task, 0x8000, mca_scan_cpus, NULL);
+ TASK_INIT(&mca_task, 0, mca_scan_cpus, NULL);
callout_init(&mca_timer, CALLOUT_MPSAFE);
SYSCTL_ADD_INT(NULL, SYSCTL_STATIC_CHILDREN(_hw_mca), OID_AUTO,
"count", CTLFLAG_RD, &mca_count, 0, "Record count");
More information about the svn-src-head
mailing list