Module: xenomai-forge
Branch: master
Commit: 674b8a4b9998518c5adb3030a94915bb63160fde
URL:
http://git.xenomai.org/?p=xenomai-forge.git;a=commit;h=674b8a4b9998518c5adb3030a94915bb63160fde
Author: Philippe Gerum <r...@xenomai.org>
Date: Thu Aug 29 16:49:18 2013 +0200
cobalt/shadow: fix refcounting of system personality users
---
kernel/cobalt/shadow.c | 9 +--------
1 files changed, 1 insertions(+), 8 deletions(-)
diff --git a/kernel/cobalt/shadow.c b/kernel/cobalt/shadow.c
index 8977bee..d711620 100644
--- a/kernel/cobalt/shadow.c
+++ b/kernel/cobalt/shadow.c
@@ -1127,18 +1127,11 @@ EXPORT_SYMBOL_GPL(xnshadow_map_kernel);
void xnshadow_finalize(struct xnthread *thread)
{
- struct xnsys_ppd *sys_ppd;
-
trace_mark(xn_nucleus, shadow_finalize,
"thread %p thread_name %s pid %d",
thread, xnthread_name(thread), xnthread_host_pid(thread));
xnthread_run_handler(thread, finalize_thread);
-
- if (xnthread_test_state(thread, XNUSER)) {
- sys_ppd = xnsys_ppd_get(0);
- atomic_dec(&sys_ppd->refcnt);
- }
}
static int xnshadow_sys_migrate(int domain)
@@ -2243,7 +2236,7 @@ static int handle_taskexit_event(struct task_struct *p)
/* p == current */
xnheap_free(&sys_ppd->sem_heap, thread->u_window);
thread->u_window = NULL;
mm = xnshadow_current_mm();
- if (atomic_read(&sys_ppd->refcnt) == 0)
+ if (atomic_dec_and_test(&sys_ppd->refcnt))
ppd_remove_mm(mm, detach_ppd);
}
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