diff options
| author | Ingo Molnar | 2007-02-16 10:28:16 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2007-02-16 17:13:59 +0100 |
| commit | 88ad0bf6890505cbd9ca1dbb79944a27b5c8697d (patch) | |
| tree | e78711c47de9da92c8e4db8029f43542cecdf268 | |
| parent | [PATCH] Add debugging feature /proc/timer_list (diff) | |
| download | kernel-qcow2-linux-88ad0bf6890505cbd9ca1dbb79944a27b5c8697d.tar.gz kernel-qcow2-linux-88ad0bf6890505cbd9ca1dbb79944a27b5c8697d.tar.xz kernel-qcow2-linux-88ad0bf6890505cbd9ca1dbb79944a27b5c8697d.zip | |
[PATCH] Add SysRq-Q to print timer_list debug info
Add SysRq-Q to print pending timers and other timer info.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/char/sysrq.c | 14 | ||||
| -rw-r--r-- | include/linux/hrtimer.h | 3 |
2 files changed, 16 insertions, 1 deletions
diff --git a/drivers/char/sysrq.c b/drivers/char/sysrq.c index be73c80d699d..1d8c4ae61551 100644 --- a/drivers/char/sysrq.c +++ b/drivers/char/sysrq.c @@ -36,6 +36,7 @@ #include <linux/workqueue.h> #include <linux/kexec.h> #include <linux/irq.h> +#include <linux/hrtimer.h> #include <asm/ptrace.h> #include <asm/irq_regs.h> @@ -158,6 +159,17 @@ static struct sysrq_key_op sysrq_sync_op = { .enable_mask = SYSRQ_ENABLE_SYNC, }; +static void sysrq_handle_show_timers(int key, struct tty_struct *tty) +{ + sysrq_timer_list_show(); +} + +static struct sysrq_key_op sysrq_show_timers_op = { + .handler = sysrq_handle_show_timers, + .help_msg = "show-all-timers(Q)", + .action_msg = "Show Pending Timers", +}; + static void sysrq_handle_mountro(int key, struct tty_struct *tty) { emergency_remount(); @@ -335,7 +347,7 @@ static struct sysrq_key_op *sysrq_key_table[36] = { /* o: This will often be registered as 'Off' at init time */ NULL, /* o */ &sysrq_showregs_op, /* p */ - NULL, /* q */ + &sysrq_show_timers_op, /* q */ &sysrq_unraw_op, /* r */ &sysrq_sync_op, /* s */ &sysrq_showstate_op, /* t */ diff --git a/include/linux/hrtimer.h b/include/linux/hrtimer.h index 93b8757c1ea2..37f9279192a9 100644 --- a/include/linux/hrtimer.h +++ b/include/linux/hrtimer.h @@ -316,6 +316,9 @@ extern unsigned long ktime_divns(const ktime_t kt, s64 div); # define ktime_divns(kt, div) (unsigned long)((kt).tv64 / (div)) #endif +/* Show pending timers: */ +extern void sysrq_timer_list_show(void); + /* * Timer-statistics info: */ |