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Oops, this didn't make it into my submit before I committed: Defer

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creation of the sysctl tree for the turnstile profiling stats until a
SI_SUB_LOCK sysinit.  Doing it in init_turnstiles() is too early as it is
called before mi_startup().
This commit is contained in:
John Baldwin 2004-06-29 03:48:49 +00:00
parent be134cb640
commit 01bd10e163
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=131263
1 changed files with 19 additions and 7 deletions
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26
sys/kern/subr_turnstile.c
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@ -142,6 +142,9 @@ MALLOC_DEFINE(M_TURNSTILE, "turnstiles", "turnstiles");
* Prototypes for non-exported routines.
*/
static void init_turnstile0(void *dummy);
#ifdef TURNSTILE_PROFILING
static void init_turnstile_profiling(void *arg);
#endif
static void propagate_priority(struct thread *);
static void turnstile_setowner(struct turnstile *ts, struct thread *owner);
@ -307,17 +310,26 @@ propagate_priority(struct thread *td)
void
init_turnstiles(void)
{
#ifdef TURNSTILE_PROFILING
struct sysctl_oid *chain_oid;
char chain_name[10];
#endif
int i;
for (i = 0; i < TC_TABLESIZE; i++) {
LIST_INIT(&turnstile_chains[i].tc_turnstiles);
mtx_init(&turnstile_chains[i].tc_lock, "turnstile chain",
NULL, MTX_SPIN);
}
mtx_init(&td_contested_lock, "td_contested", NULL, MTX_SPIN);
thread0.td_turnstile = NULL;
}
#ifdef TURNSTILE_PROFILING
static void
init_turnstile_profiling(void *arg)
{
struct sysctl_oid *chain_oid;
char chain_name[10];
int i;
for (i = 0; i < TC_TABLESIZE; i++) {
snprintf(chain_name, sizeof(chain_name), "%d", i);
chain_oid = SYSCTL_ADD_NODE(NULL,
SYSCTL_STATIC_CHILDREN(_debug_turnstile_chains), OID_AUTO,
@ -328,11 +340,11 @@ init_turnstiles(void)
SYSCTL_ADD_UINT(NULL, SYSCTL_CHILDREN(chain_oid), OID_AUTO,
"max_depth", CTLFLAG_RD, &turnstile_chains[i].tc_max_depth,
0, NULL);
#endif
}
mtx_init(&td_contested_lock, "td_contested", NULL, MTX_SPIN);
thread0.td_turnstile = NULL;
}
SYSINIT(turnstile_profiling, SI_SUB_LOCK, SI_ORDER_ANY,
init_turnstile_profiling, NULL);
#endif
static void
init_turnstile0(void *dummy)