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hwmpc: fix brain-damaged handling of thread descriptor freeing

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This commit is contained in:
Matt Macy 2018-05-28 23:16:39 +00:00
parent 552b3e1798
commit 3de228499a
1 changed files with 4 additions and 4 deletions
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8
sys/dev/hwpmc/hwpmc_mod.c
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@ -2351,9 +2351,9 @@ pmc_thread_descriptor_pool_free_task(void *arg __unused)
/* Determine what changes, if any, we need to make. */
mtx_lock_spin(&pmc_threadfreelist_mtx);
delta = pmc_threadfreelist_entries - pmc_threadfreelist_max;
while (delta > 0) {
pt = LIST_FIRST(&pmc_threadfreelist);
MPASS(pt);
while (delta > 0 &&
(pt = LIST_FIRST(&pmc_threadfreelist)) != NULL) {
delta--;
LIST_REMOVE(pt, pt_next);
LIST_INSERT_HEAD(&tmplist, pt, pt_next);
}
@ -2361,7 +2361,7 @@ pmc_thread_descriptor_pool_free_task(void *arg __unused)
/* If there are entries to free, free them. */
while (!LIST_EMPTY(&tmplist)) {
pt = LIST_FIRST(&pmc_threadfreelist);
pt = LIST_FIRST(&tmplist);
LIST_REMOVE(pt, pt_next);
free(pt, M_PMC);
}