Messages in this thread Patch in this message | | | Date | Mon, 11 Mar 2013 13:13:08 +0400 | From | Pavel Emelyanov <> | Subject | [PATCH 3/3] posix-timers: Show sigevent info in proc file |
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Previous patch added proc file to list posix timers created by task. Expand the information provided in this file by adding info about notification method, with which timers were created. I.e. after the "ID:" line there go
1. "signal:" line, that shows signal number and sigval bits; 2. "notify:" line, that shows the timer notification method.
Thus the timer entry would looke like this:
ID: 123 signal: 14/0000000000b005d0 notify: signal/pid.732
This information is enough to understand how the timer_create() was called for each particular timer.
Signed-off-by: Pavel Emelyanov <xemul@parallels.com> --- fs/proc/base.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-)
diff --git a/fs/proc/base.c b/fs/proc/base.c index 01def9f..a193086 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2018,6 +2018,7 @@ struct timers_private { struct pid *pid; struct task_struct *task; struct sighand_struct *sighand; + struct pid_namespace *ns; unsigned long flags; }; @@ -2060,9 +2061,24 @@ static void timers_stop(struct seq_file *m, void *v) static int show_timer(struct seq_file *m, void *v) { struct k_itimer *timer; + struct timers_private *tp = m->private; + int notify; + static char *nstr[] = { + [SIGEV_SIGNAL] = "signal", + [SIGEV_NONE] = "none", + [SIGEV_THREAD] = "thread", + }; timer = list_entry((struct list_head *)v, struct k_itimer, list); + notify = timer->it_sigev_notify; + seq_printf(m, "ID: %d\n", timer->it_id); + seq_printf(m, "signal: %d/%p\n", timer->sigq->info.si_signo, + timer->sigq->info.si_value.sival_ptr); + seq_printf(m, "notify: %s/%s.%d\n", + nstr[notify & ~SIGEV_THREAD_ID], + (notify & SIGEV_THREAD_ID) ? "tid" : "pid", + pid_nr_ns(timer->it_pid, tp->ns)); return 0; } @@ -2084,6 +2100,7 @@ static int proc_timers_open(struct inode *inode, struct file *file) return -ENOMEM; tp->pid = proc_pid(inode); + tp->ns = inode->i_sb->s_fs_info; return 0; } -- 1.7.6.5
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