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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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19
drivers/char/sysrq.c
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@@ -153,6 +153,21 @@ static struct sysrq_key_op sysrq_mountro_op = {
/* END SYNC SYSRQ HANDLERS BLOCK */
#ifdef CONFIG_DEBUG_MUTEXES
static void
sysrq_handle_showlocks(int key, struct pt_regs *pt_regs, struct tty_struct *tty)
{
mutex_debug_show_all_locks();
}
static struct sysrq_key_op sysrq_showlocks_op = {
.handler = sysrq_handle_showlocks,
.help_msg = "show-all-locks(D)",
.action_msg = "Show Locks Held",
};
#endif
/* SHOW SYSRQ HANDLERS BLOCK */
@@ -294,7 +309,11 @@ static struct sysrq_key_op *sysrq_key_table[SYSRQ_KEY_TABLE_LENGTH] = {
#else
/* c */ NULL,
#endif
#ifdef CONFIG_DEBUG_MUTEXES
/* d */ &sysrq_showlocks_op,
#else
/* d */ NULL,
#endif
/* e */ &sysrq_term_op,
/* f */ &sysrq_moom_op,
/* g */ NULL,