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authorFrederic Weisbecker <fweisbec@gmail.com>2012-11-13 14:20:55 +0100
committerFrederic Weisbecker <fweisbec@gmail.com>2013-01-27 19:23:31 +0100
commit6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc (patch)
tree44da712b66d778c2fd701f9c96b00e108530e1a9 /drivers/isdn/mISDN
parent3f4724ea85b7d9055a9976fa8f30b471bdfbca93 (diff)
cputime: Use accessors to read task cputime stats
This is in preparation for the full dynticks feature. While remotely reading the cputime of a task running in a full dynticks CPU, we'll need to do some extra-computation. This way we can account the time it spent tickless in userspace since its last cputime snapshot. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Li Zhong <zhong@linux.vnet.ibm.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/isdn/mISDN')
-rw-r--r--drivers/isdn/mISDN/stack.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/isdn/mISDN/stack.c b/drivers/isdn/mISDN/stack.c
index 5f21f629b7ae..deda591f70b9 100644
--- a/drivers/isdn/mISDN/stack.c
+++ b/drivers/isdn/mISDN/stack.c
@@ -18,6 +18,7 @@
#include <linux/slab.h>
#include <linux/mISDNif.h>
#include <linux/kthread.h>
+#include <linux/sched.h>
#include "core.h"
static u_int *debug;
@@ -202,6 +203,9 @@ static int
mISDNStackd(void *data)
{
struct mISDNstack *st = data;
+#ifdef MISDN_MSG_STATS
+ cputime_t utime, stime;
+#endif
int err = 0;
sigfillset(&current->blocked);
@@ -303,9 +307,10 @@ mISDNStackd(void *data)
"msg %d sleep %d stopped\n",
dev_name(&st->dev->dev), st->msg_cnt, st->sleep_cnt,
st->stopped_cnt);
+ task_cputime(st->thread, &utime, &stime);
printk(KERN_DEBUG
"mISDNStackd daemon for %s utime(%ld) stime(%ld)\n",
- dev_name(&st->dev->dev), st->thread->utime, st->thread->stime);
+ dev_name(&st->dev->dev), utime, stime);
printk(KERN_DEBUG
"mISDNStackd daemon for %s nvcsw(%ld) nivcsw(%ld)\n",
dev_name(&st->dev->dev), st->thread->nvcsw, st->thread->nivcsw);