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- Extend the coverage of PROC_LOCK to cover wakeup(&p->p_emuldata);

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- Lock the emuldata in a case when we just created it.

Sponsored by:	Google SoC 2006
Submitted by:	rdivacky
Suggested by:	jhb
This commit is contained in:
Alexander Leidinger 2006-09-09 16:55:55 +00:00
parent 198e7d90f9
commit 8618fd85a3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=162184
1 changed files with 3 additions and 1 deletions
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4
sys/compat/linux/linux_emul.c
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@ -101,6 +101,7 @@ linux_proc_init(struct thread *td, pid_t child, int flags)
panic("process not found in proc_init\n");
p->p_emuldata = em;
PROC_UNLOCK(p);
EMUL_LOCK(&emul_lock);
} else {
/* lookup the old one */
em = em_find(td->td_proc, EMUL_UNLOCKED);
@ -129,14 +130,15 @@ linux_proc_init(struct thread *td, pid_t child, int flags)
if (child != 0) {
EMUL_UNLOCK(&emul_lock);
EMUL_SHARED_WLOCK(&emul_shared_lock);
LIST_INSERT_HEAD(&em->shared->threads, em, threads);
EMUL_SHARED_WUNLOCK(&emul_shared_lock);
p = pfind(child);
PROC_UNLOCK(p);
/* we might have a sleeping linux_schedtail */
wakeup(&p->p_emuldata);
PROC_UNLOCK(p);
} else
EMUL_UNLOCK(&emul_lock);