The patch titled
Subject: taskstats-add-e-u-stime-for-tgid-command-fix
has been added to the -mm tree. Its filename is
taskstats-add-e-u-stime-for-tgid-command-fix.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/taskstats-add-e-u-stime-for-tgid-command-fix.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/taskstats-add-e-u-stime-for-tgid-command-fix.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: taskstats-add-e-u-stime-for-tgid-command-fix
run ktime_get_ns() a single time
Cc: Balbir Singh <bsingharora@xxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Zhang Xiao <xiao.zhang@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/taskstats.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff -puN kernel/taskstats.c~taskstats-add-e-u-stime-for-tgid-command-fix kernel/taskstats.c
--- a/kernel/taskstats.c~taskstats-add-e-u-stime-for-tgid-command-fix
+++ a/kernel/taskstats.c
@@ -211,6 +211,7 @@ static int fill_stats_for_tgid(pid_t tgi
unsigned long flags;
int rc = -ESRCH;
u64 delta, utime, stime;
+ u64 start_time;
/*
* Add additional stats from live tasks except zombie thread group
@@ -228,6 +229,7 @@ static int fill_stats_for_tgid(pid_t tgi
memset(stats, 0, sizeof(*stats));
tsk = first;
+ start_time = ktime_get_ns();
do {
if (tsk->exit_state)
continue;
@@ -240,7 +242,7 @@ static int fill_stats_for_tgid(pid_t tgi
delayacct_add_tsk(stats, tsk);
/* calculate task elapsed time in nsec */
- delta = ktime_get_ns() - tsk->start_time;
+ delta = start_time - tsk->start_time;
/* Convert to micro seconds */
do_div(delta, NSEC_PER_USEC);
stats->ac_etime += delta;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
i-need-old-gcc.patch
arm-arch-arm-include-asm-pageh-needs-personalityh.patch
ocfs2-old-mle-put-and-release-after-the-function-dlm_add_migration_mle-called-fix.patch
ocfs2-dlm-optimization-of-code-while-free-dead-node-locks-checkpatch-fixes.patch
mm.patch
mm-move-madv_free-pages-into-lru_inactive_file-list-checkpatch-fixes.patch
mm-use-is_migrate_highatomic-to-simplify-the-code-fix.patch
mm-introduce-memalloc_nofs_saverestore-api-fix.patch
jbd2-mark-the-transaction-context-with-the-scope-gfp_nofs-context-fix.patch
jbd2-make-the-whole-kjournald2-kthread-nofs-safe-checkpatch-fixes.patch
checkpatch-add-ability-to-find-bad-uses-of-vsprintf-%pfoo-extensions-fix.patch
checkpatch-add-ability-to-find-bad-uses-of-vsprintf-%pfoo-extensions-fix-fix.patch
taskstats-add-e-u-stime-for-tgid-command-fix.patch
linux-next-rejects.patch
treewide-move-set_memory_-functions-away-from-cacheflushh-fix.patch
arm64-use-set_memoryh-header-fix.patch
kernel-forkc-export-kernel_thread-to-modules.patch
slab-leaks3-default-y.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
