All the specific taskstats fields should only be manipulated in
{add_tsk,fill_threadgroup}_stats().
Signed-off-by: Guillaume Chazarain <[email protected]>
Cc: Balbir Singh <[email protected]>
Cc: Jay Lan <[email protected]>
Cc: Jonathan Lim <[email protected]>
Cc: Oleg Nesterov <[email protected]>
---
kernel/taskstats.c | 21 ++++++++-------------
kernel/tsacct.c | 3 +++
2 files changed, 11 insertions(+), 13 deletions(-)
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index 972bbfa..f25bf03 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -218,6 +218,8 @@ static void fill_threadgroup_stats(struct taskstats *stats,
* per-task-foo-fill_threadgroup(stats, task);
*/
+ stats->version = TASKSTATS_VERSION;
+
/* fill in basic acct fields */
bacct_fill_threadgroup(stats, task);
@@ -241,9 +243,6 @@ static int fill_pid(pid_t pid, struct task_struct *tsk, struct taskstats *stats)
get_task_struct(tsk);
memset(stats, 0, sizeof(*stats));
- stats->version = TASKSTATS_VERSION;
- stats->nvcsw = tsk->nvcsw;
- stats->nivcsw = tsk->nivcsw;
add_tsk_stats(stats, tsk);
fill_threadgroup_stats(stats, tsk);
@@ -278,15 +277,12 @@ static int fill_tgid(pid_t tgid, struct task_struct *first,
tsk = first;
do {
- if (tsk->exit_state)
- continue;
- /*
- * This check is racy as a thread could exit just right
- * now and have its statistics accounted twice.
- */
- add_tsk_stats(stats, tsk);
- stats->nvcsw += tsk->nvcsw;
- stats->nivcsw += tsk->nivcsw;
+ if (!tsk->exit_state)
+ /*
+ * This check is racy as a thread could exit just right
+ * now and have its statistics accounted twice.
+ */
+ add_tsk_stats(stats, tsk);
} while_each_thread(first, tsk);
fill_threadgroup_stats(stats, first->group_leader);
@@ -294,7 +290,6 @@ static int fill_tgid(pid_t tgid, struct task_struct *first,
rc = 0;
out:
rcu_read_unlock();
- stats->version = TASKSTATS_VERSION;
return rc;
}
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 4caea73..73b4c69 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -57,6 +57,9 @@ void bacct_add_tsk(struct taskstats *stats, struct task_struct *tsk)
cputime_to_msecs(tsk->stimescaled) * USEC_PER_MSEC;
stats->ac_minflt += tsk->min_flt;
stats->ac_majflt += tsk->maj_flt;
+
+ stats->nvcsw += tsk->nvcsw;
+ stats->nivcsw += tsk->nivcsw;
}
void bacct_fill_threadgroup(struct taskstats *stats, struct task_struct *tsk)
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]