a50e80dcdd
In the current code, the locking is completely broken and may lead easilly to deadlocks. Fix it by using the proc_mtx, linked to the suspending thread, as lock for the operation. Keep using the thread_lock for setting and reading the flag even if it is not entirely necessary (atomic ops may do it as well, but this way the code is more readable). - Fix a deadlock within kthread_suspend(). The suspender should not sleep on a different channel wrt the suspended thread, or, otherwise, the awaker should wakeup both. Uniform the interface to what the kproc_* counterparts do (sleeping on the same channel). - Change the kthread_suspend_check() prototype. kthread_suspend_check() always assumes curthread and must only refer to it, so skip the thread pointer as it may be easilly mistaken. If curthread is not a kthread, the system will panic. In collabouration with: jhb Tested by: Giovanni Trematerra <giovanni dot trematerra at gmail dot com> MFC: 2 weeks |
||
|---|---|---|
| .. | ||
| colldef | ||
| dict | ||
| doc | ||
| examples | ||
| info | ||
| man | ||
| me | ||
| misc | ||
| mk | ||
| mklocale | ||
| monetdef | ||
| msgdef | ||
| numericdef | ||
| security | ||
| sendmail | ||
| skel | ||
| snmp | ||
| syscons | ||
| tabset | ||
| termcap | ||
| timedef | ||
| zoneinfo | ||
| Makefile | ||
| Makefile.inc | ||