d/freebsd-dev
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Move the three geom kprocs as threads under a single pid.

Browse Source 
Reviewed by:	julian
This commit is contained in:
Andrew Thompson 2011-05-11 21:47:30 +00:00
parent 73e3bb6563
commit b2901e999b
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=221792
1 changed files with 25 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

71
sys/geom/geom_kern.c
View File

@ -44,6 +44,7 @@ __FBSDID("$FreeBSD$");
#include <sys/bio.h>
#include <sys/sysctl.h>
#include <sys/proc.h>
#include <sys/unistd.h>
#include <sys/kthread.h>
#include <sys/lock.h>
#include <sys/mutex.h>
@ -57,7 +58,10 @@ MALLOC_DEFINE(M_GEOM, "GEOM", "Geom data structures");
struct sx topology_lock;
static struct proc *g_up_proc;
static struct proc *g_proc;
static struct thread *g_up_td;
static struct thread *g_down_td;
static struct thread *g_event_td;
int g_debugflags;
int g_collectstats = 1;
@ -82,71 +86,43 @@ int g_shutdown;
*/
static void
g_up_procbody(void)
g_up_procbody(void *arg)
{
struct proc *p = g_up_proc;
struct thread *tp = FIRST_THREAD_IN_PROC(p);
mtx_assert(&Giant, MA_NOTOWNED);
thread_lock(tp);
sched_prio(tp, PRIBIO);
thread_unlock(tp);
thread_lock(g_up_td);
sched_prio(g_up_td, PRIBIO);
thread_unlock(g_up_td);
for(;;) {
g_io_schedule_up(tp);
g_io_schedule_up(g_up_td);
}
}
static struct kproc_desc g_up_kp = {
"g_up",
g_up_procbody,
&g_up_proc,
};
static struct proc *g_down_proc;
static void
g_down_procbody(void)
g_down_procbody(void *arg)
{
struct proc *p = g_down_proc;
struct thread *tp = FIRST_THREAD_IN_PROC(p);
mtx_assert(&Giant, MA_NOTOWNED);
thread_lock(tp);
sched_prio(tp, PRIBIO);
thread_unlock(tp);
thread_lock(g_down_td);
sched_prio(g_down_td, PRIBIO);
thread_unlock(g_down_td);
for(;;) {
g_io_schedule_down(tp);
g_io_schedule_down(g_down_td);
}
}
static struct kproc_desc g_down_kp = {
"g_down",
g_down_procbody,
&g_down_proc,
};
static struct proc *g_event_proc;
static void
g_event_procbody(void)
g_event_procbody(void *arg)
{
struct proc *p = g_event_proc;
struct thread *tp = FIRST_THREAD_IN_PROC(p);
mtx_assert(&Giant, MA_NOTOWNED);
thread_lock(tp);
sched_prio(tp, PRIBIO);
thread_unlock(tp);
thread_lock(g_event_td);
sched_prio(g_event_td, PRIBIO);
thread_unlock(g_event_td);
g_run_events();
/* NOTREACHED */
}
static struct kproc_desc g_event_kp = {
"g_event",
g_event_procbody,
&g_event_proc,
};
static void
geom_shutdown(void *foo __unused)
{
@ -164,9 +140,12 @@ g_init(void)
g_event_init();
g_ctl_init();
mtx_lock(&Giant);
kproc_start(&g_event_kp);
kproc_start(&g_up_kp);
kproc_start(&g_down_kp);
kproc_kthread_add(g_event_procbody, NULL, &g_proc, &g_event_td,
RFHIGHPID, 0, "geom", "g_event");
kproc_kthread_add(g_up_procbody, NULL, &g_proc, &g_up_td,
RFHIGHPID, 0, "geom", "g_up");
kproc_kthread_add(g_down_procbody, NULL, &g_proc, &g_down_td,
RFHIGHPID, 0, "geom", "g_down");
mtx_unlock(&Giant);
EVENTHANDLER_REGISTER(shutdown_pre_sync, geom_shutdown, NULL,
SHUTDOWN_PRI_FIRST);