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- Restore the 'show sleepq' DDB command.

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- Trim some extra includes.
This commit is contained in:
jhb 2007-09-27 18:10:40 +00:00
parent 5c87605e74
commit bcef6cfce9
1 changed files with 62 additions and 5 deletions
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67
sys/kern/subr_sleepqueue.c
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@ -70,7 +70,6 @@ __FBSDID("$FreeBSD$");
#include <sys/lock.h>
#include <sys/kernel.h>
#include <sys/ktr.h>
#include <sys/malloc.h>
#include <sys/mutex.h>
#include <sys/proc.h>
#include <sys/sched.h>
@ -78,10 +77,6 @@ __FBSDID("$FreeBSD$");
#include <sys/sleepqueue.h>
#include <sys/sysctl.h>
#ifdef DDB
#include <ddb/ddb.h>
#endif
#include <vm/uma.h>
#ifdef DDB
@ -910,3 +905,65 @@ sleepq_abort(struct thread *td, int intrval)
mtx_lock_spin(&sched_lock);
}
#ifdef DDB
DB_SHOW_COMMAND(sleepq, db_show_sleepqueue)
{
struct sleepqueue_chain *sc;
struct sleepqueue *sq;
#ifdef INVARIANTS
struct lock_object *lock;
#endif
struct thread *td;
void *wchan;
int i;
if (!have_addr)
return;
/*
* First, see if there is an active sleep queue for the wait channel
* indicated by the address.
*/
wchan = (void *)addr;
sc = SC_LOOKUP(wchan);
LIST_FOREACH(sq, &sc->sc_queues, sq_hash)
if (sq->sq_wchan == wchan)
goto found;
/*
* Second, see if there is an active sleep queue at the address
* indicated.
*/
for (i = 0; i < SC_TABLESIZE; i++)
LIST_FOREACH(sq, &sleepq_chains[i].sc_queues, sq_hash) {
if (sq == (struct sleepqueue *)addr)
goto found;
}
db_printf("Unable to locate a sleep queue via %p\n", (void *)addr);
return;
found:
db_printf("Wait channel: %p\n", sq->sq_wchan);
#ifdef INVARIANTS
db_printf("Queue type: %d\n", sq->sq_type);
if (sq->sq_lock) {
lock = &sq->sq_lock->mtx_object;
db_printf("Associated Interlock: %p - (%s) %s\n", lock,
LOCK_CLASS(lock)->lc_name, lock->lo_name);
}
#endif
db_printf("Blocked threads:\n");
for (i = 0; i < NR_SLEEPQS; i++) {
db_printf("\nQueue[%d]:\n", i);
if (TAILQ_EMPTY(&sq->sq_blocked[i]))
db_printf("\tempty\n");
else
TAILQ_FOREACH(td, &sq->sq_blocked[0],
td_slpq) {
db_printf("\t%p (tid %d, pid %d, \"%s\")\n", td,
td->td_tid, td->td_proc->p_pid,
td->td_proc->p_comm);
}
}
}
#endif