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authorPavel Emelyanov <xemul@openvz.org>2008-07-25 01:48:48 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-25 10:53:47 -0700
commit7d1e13505be8c2bd2207894f4e0f069e1f9b51c9 (patch)
treed8471439c564bb15532c9dac041d0787faee2c90 /kernel
parentb5a7174875ea570cc675f2c503e800db8efdd6a7 (diff)
downloadlinux-2.6.34-ux500-7d1e13505be8c2bd2207894f4e0f069e1f9b51c9.tar.gz
bsdacct: account dying tasks in all relevant namespaces
This just makes the acct_proces walk the pid namespaces from current up to the top and account a task in each with the accounting turned on. ns->parent access if safe lockless, since current it still alive and holds its namespace, which in turn holds its parent. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: Balbir Singh <balbir@in.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/acct.c21
1 files changed, 14 insertions, 7 deletions
diff --git a/kernel/acct.c b/kernel/acct.c
index 7fc9f9dd1e9..0feba97e114 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -631,15 +631,9 @@ void acct_collect(long exitcode, int group_dead)
spin_unlock_irq(&current->sighand->siglock);
}
-/**
- * acct_process - now just a wrapper around do_acct_process
- *
- * handles process accounting for an exiting task
- */
-void acct_process(void)
+static void acct_process_in_ns(struct pid_namespace *ns)
{
struct file *file = NULL;
- struct pid_namespace *ns = task_active_pid_ns(current);
struct bsd_acct_struct *acct;
acct = ns->bacct;
@@ -661,3 +655,16 @@ void acct_process(void)
do_acct_process(acct, ns, file);
fput(file);
}
+
+/**
+ * acct_process - now just a wrapper around do_acct_process
+ *
+ * handles process accounting for an exiting task
+ */
+void acct_process(void)
+{
+ struct pid_namespace *ns;
+
+ for (ns = task_active_pid_ns(current); ns != NULL; ns = ns->parent)
+ acct_process_in_ns(ns);
+}