[PATCH] Add rlimits to /proc/<PID>/status

Previous thread: "BUG: unable to handle kernel paging request" on shutdown or killing NetworkManager in latest wireless-testing (with rt73usb wireless adapter) by Stefanik Gábor on Friday, May 30, 2008 - 4:36 pm. (2 messages)

Next thread: [git patches] libata fixes by Jeff Garzik on Friday, May 30, 2008 - 6:13 pm. (1 message)
To: lkml <linux-kernel@...>
Date: Friday, May 30, 2008 - 4:11 pm

Signed-off-by: Clifford Wolf <clifford@clifford.at>
---
fs/proc/array.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 57 insertions(+), 0 deletions(-)

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 9e3b8c3..3cb2ad3 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -242,6 +242,62 @@ static void collect_sigign_sigcatch(struct task_struct *p, sigset_t *ign,
}
}

+static const char *rlim_names[RLIM_NLIMITS] = {
+ [RLIMIT_CPU] = "CPU",
+ [RLIMIT_FSIZE] = "FSize",
+ [RLIMIT_DATA] = "Data",
+ [RLIMIT_STACK] = "Stack",
+ [RLIMIT_CORE] = "Core",
+ [RLIMIT_RSS] = "RSS",
+ [RLIMIT_NPROC] = "NProc",
+ [RLIMIT_NOFILE] = "NoFile",
+ [RLIMIT_MEMLOCK] = "MemLock",
+ [RLIMIT_AS] = "AddrSpace",
+ [RLIMIT_LOCKS] = "Locks",
+ [RLIMIT_SIGPENDING] = "SigPending",
+ [RLIMIT_MSGQUEUE] = "MsgQueue",
+ [RLIMIT_NICE] = "Nice",
+ [RLIMIT_RTPRIO] = "RTPrio",
+ [RLIMIT_RTTIME] = "RTTime"
+};
+
+#if RLIM_NLIMITS != 16
+# error Value of RLIM_NLIMITS changed. \
+ Please update rlim_names in fs/proc/array.c
+#endif
+
+static inline void task_rlim(struct seq_file *m, struct task_struct *p)
+{
+ unsigned long flags;
+ struct rlimit rlim[RLIM_NLIMITS];
+ int i;
+
+ for (i=0; i<RLIM_NLIMITS; i++) {
+ rlim[i].rlim_cur = 0;
+ rlim[i].rlim_max = 0;
+ }
+
+ rcu_read_lock();
+ if (lock_task_sighand(p, &flags)) {
+ for (i=0; i<RLIM_NLIMITS; i++)
+ rlim[i] = p->signal->rlim[i];
+ unlock_task_sighand(p, &flags);
+ }
+ rcu_read_unlock();
+
+ for (i=0; i<RLIM_NLIMITS; i++) {
+ seq_printf(m, "Rlim%s:\t", rlim_names[i]);
+ if (rlim[i].rlim_cur != RLIM_INFINITY)
+ seq_printf(m, "%lu\t", rlim[i].rlim_cur);
+ else
+ seq_printf(m, "inf\t");
+ if (rlim[i].rlim_max != RLIM_INFINITY)
+ seq_printf(m, "%lu\n", rlim[i].rlim_max);
+ else
+ seq_printf(m, "inf\n");
+ }
+}
+
static inline void task_sig(struct seq_file *m, str...

To: Clifford Wolf <clifford@...>
Cc: lkml <linux-kernel@...>
Date: Friday, May 30, 2008 - 5:46 pm

fs/proc/base.c already has an array with strings in it

--

To: Clifford Wolf <clifford@...>
Cc: lkml <linux-kernel@...>
Date: Friday, May 30, 2008 - 5:35 pm

Aren't they better staying in /proc/<PID>/limits?

Hugh
--

To: Hugh Dickins <hugh@...>
Cc: lkml <linux-kernel@...>
Date: Friday, May 30, 2008 - 6:50 pm

Hi,

this was a cleanup of a patch I've sent to lkml about 6 months ago
when there was no yet-released (non-rc) kernel with /proc/<PID>/limits ...

my patch is a more or less duplicate of commit d85f50d5. oops.
please simply ignore it.. ;-)

yours,
- clifford

--
A byte walks into a bar and orders a pint. Bartender asks him "What's wrong?"
Byte says "Parity error." Bartender nods and says "Yeah, I thought you looked
a bit off."
--

Previous thread: "BUG: unable to handle kernel paging request" on shutdown or killing NetworkManager in latest wireless-testing (with rt73usb wireless adapter) by Stefanik Gábor on Friday, May 30, 2008 - 4:36 pm. (2 messages)

Next thread: [git patches] libata fixes by Jeff Garzik on Friday, May 30, 2008 - 6:13 pm. (1 message)