fill_thread_group() may want to know if it is filling TASKSTATS_CMD_ATTR_TGID
or TASKSTATS_CMD_ATTR_PID stats, so give it this information in the tg_stats
boolean.
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]>
---
include/linux/tsacct_kern.h | 4 ++--
kernel/taskstats.c | 12 +++++++-----
kernel/tsacct.c | 3 ++-
3 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/include/linux/tsacct_kern.h b/include/linux/tsacct_kern.h
index 93dffc2..5652ae0 100644
--- a/include/linux/tsacct_kern.h
+++ b/include/linux/tsacct_kern.h
@@ -10,10 +10,10 @@
#include <linux/taskstats.h>
#ifdef CONFIG_TASKSTATS
-void bacct_fill_threadgroup(struct taskstats *stats, struct task_struct *task);
+void bacct_fill_threadgroup(struct taskstats *stats, struct task_struct *task, bool tg_stats);
void bacct_add_tsk(struct taskstats *stats, struct task_struct *task);
#else
-static inline void bacct_fill_threadgroup(struct taskstats *stats, struct task_struct *task)
+static inline void bacct_fill_threadgroup(struct taskstats *stats, struct task_struct *task, bool tg_stats)
{}
static inline void bacct_add_tsk(struct taskstats *stats, struct task_struct *task)
{}
diff --git a/kernel/taskstats.c b/kernel/taskstats.c
index ce43fae..42d3110 100644
--- a/kernel/taskstats.c
+++ b/kernel/taskstats.c
@@ -172,6 +172,7 @@ static void send_cpu_listeners(struct sk_buff *skb,
* fill_threadgroup - initialize some common stats for the thread group
* @stats: the taskstats to write into
* @task: the thread representing the whole group
+ * @tg_stats: whether in the end thread group stats are requested
*
* There are two types of taskstats fields when considering a thread group:
* - those that can be aggregated from each thread in the group (like CPU
@@ -181,7 +182,8 @@ static void send_cpu_listeners(struct sk_buff *skb,
* XXX_threadgroup() methods deal with the first type while XXX_add_tsk() with
* the second.
*/
-static void fill_threadgroup(struct taskstats *stats, struct task_struct *task)
+static void fill_threadgroup(struct taskstats *stats, struct task_struct *task,
+ bool tg_stats)
{
/*
* Each accounting subsystem adds calls to its functions to initialize
@@ -193,7 +195,7 @@ static void fill_threadgroup(struct taskstats *stats, struct task_struct *task)
stats->version = TASKSTATS_VERSION;
/* fill in basic acct fields */
- bacct_fill_threadgroup(stats, task);
+ bacct_fill_threadgroup(stats, task, tg_stats);
/* fill in extended acct fields */
xacct_fill_threadgroup(stats, task);
@@ -248,7 +250,7 @@ static int fill_pid(pid_t pid, struct task_struct *tsk,
memset(stats, 0, sizeof(*stats));
add_tsk(stats, tsk);
- fill_threadgroup(stats, tsk);
+ fill_threadgroup(stats, tsk, false);
/* Define err: label here if needed */
put_task_struct(tsk);
@@ -289,7 +291,7 @@ static int fill_tgid(pid_t tgid, struct task_struct *first,
add_tsk(stats, tsk);
while_each_thread(first, tsk);
- fill_threadgroup(stats, first->group_leader);
+ fill_threadgroup(stats, first->group_leader, true);
unlock_task_sighand(first, &flags);
rc = 0;
out:
@@ -545,7 +547,7 @@ void taskstats_exit(struct task_struct *tsk, int group_dead)
*/
memcpy(stats, tsk->signal->stats, sizeof(*stats));
- fill_threadgroup(stats, tsk->group_leader);
+ fill_threadgroup(stats, tsk->group_leader, true);
send:
send_cpu_listeners(rep_skb, listeners);
diff --git a/kernel/tsacct.c b/kernel/tsacct.c
index 9541a1a..24056aa 100644
--- a/kernel/tsacct.c
+++ b/kernel/tsacct.c
@@ -41,7 +41,8 @@ static void fill_wall_times(struct taskstats *stats, struct task_struct *tsk)
* fill in basic accounting fields
*/
-void bacct_fill_threadgroup(struct taskstats *stats, struct task_struct *task)
+void bacct_fill_threadgroup(struct taskstats *stats, struct task_struct *task,
+ bool tg_stats)
{
BUILD_BUG_ON(TS_COMM_LEN < TASK_COMM_LEN);
-
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