Module: xenomai-3
Branch: wip/rtnet-fixes
Commit: ac098c017c392d105d3d67ff497077ad5db1b45b
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=ac098c017c392d105d3d67ff497077ad5db1b45b
Author: Philippe Gerum <r...@xenomai.org>
Date: Mon Jan 15 14:45:22 2018 +0100
cobalt/rtdm: fix semaphore wait mode for fd_cleanup thread
This thread must wait for work in interruptible mode, does not wait
for a device event. This fixes the bad process time accounting which
otherwise would converge to 1.00 for an idle system when the Cobalt
core is enabled.
---
kernel/cobalt/rtdm/fd.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/kernel/cobalt/rtdm/fd.c b/kernel/cobalt/rtdm/fd.c
index 7daf532..b4d3920 100644
--- a/kernel/cobalt/rtdm/fd.c
+++ b/kernel/cobalt/rtdm/fd.c
@@ -245,11 +245,10 @@ static int fd_cleanup_thread(void *data)
set_cpus_allowed_ptr(current, cpu_online_mask);
do {
- err = down_killable(&rtdm_fd_cleanup_sem);
- } while (err && !kthread_should_stop());
-
- if (kthread_should_stop())
- break;
+ err = down_interruptible(&rtdm_fd_cleanup_sem);
+ if (kthread_should_stop())
+ return 0;
+ } while (err);
xnlock_get_irqsave(&fdtree_lock, s);
fd = list_first_entry(&rtdm_fd_cleanup_queue,
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