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MFC r283454:

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Avoid unnecessary em zeroing in non-exec path
as it already zeroed by malloc with M_ZERO flag
and move zeroing to the proper place in exec path.
This commit is contained in:
dchagin 2016-01-09 17:02:35 +00:00
parent 198b8af898
commit 79ce2b00ac
1 changed files with 5 additions and 4 deletions
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9
sys/compat/linux/linux_emul.c
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@ -89,8 +89,6 @@ linux_proc_init(struct thread *td, struct thread *newtd, int flags)
if (newtd != NULL) {
/* non-exec call */
em = malloc(sizeof(*em), M_TEMP, M_WAITOK | M_ZERO);
em->pdeath_signal = 0;
em->robust_futexes = NULL;
if (flags & LINUX_CLONE_THREAD) {
LINUX_CTR1(proc_init, "thread newtd(%d)",
newtd->td_tid);
@ -117,6 +115,11 @@ linux_proc_init(struct thread *td, struct thread *newtd, int flags)
KASSERT(em != NULL, ("proc_init: emuldata not found in exec case.\n"));
em->em_tid = td->td_proc->p_pid;
em->flags = 0;
em->pdeath_signal = 0;
em->robust_futexes = NULL;
em->child_clear_tid = NULL;
em->child_set_tid = NULL;
/* epoll should be destroyed in a case of exec. */
pem = pem_find(td->td_proc);
@ -129,8 +132,6 @@ linux_proc_init(struct thread *td, struct thread *newtd, int flags)
}
}
em->child_clear_tid = NULL;
em->child_set_tid = NULL;
}
void