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[PATCH] mutex subsystem, more debugging code

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more mutex debugging: check for held locks during memory freeing,
task exit, enable sysrq printouts, etc.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
This commit is contained in:
Ingo Molnar 2006-01-09 15:59:21 -08:00 • committed by Ingo Molnar
parent 408894ee4d
commit de5097c2e7
7 changed files with 37 additions and 0 deletions
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5
kernel/exit.c
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@ -29,6 +29,7 @@
#include <linux/syscalls.h>
#include <linux/signal.h>
#include <linux/cn_proc.h>
#include <linux/mutex.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
@ -869,6 +870,10 @@ fastcall NORET_TYPE void do_exit(long code)
mpol_free(tsk->mempolicy);
tsk->mempolicy = NULL;
#endif
/*
* If DEBUG_MUTEXES is on, make sure we are holding no locks:
*/
mutex_debug_check_no_locks_held(tsk);
/* PF_DEAD causes final put_task_struct after we schedule. */
preempt_disable();