The patch titled
taskstats_tgid_alloc: optimization
has been removed from the -mm tree. Its filename was
taskstats_tgid_alloc-optimization.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: taskstats_tgid_alloc: optimization
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Every subthread (except first) does unneeded kmem_cache_alloc/kmem_cache_free.
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Shailabh Nagar <nagar@xxxxxxxxxxxxxx>
Cc: Balbir Singh <balbir@xxxxxxxxxx>
Cc: Jay Lan <jlan@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
include/linux/taskstats_kern.h | 3 +++
1 file changed, 3 insertions(+)
diff -puN include/linux/taskstats_kern.h~taskstats_tgid_alloc-optimization include/linux/taskstats_kern.h
--- a/include/linux/taskstats_kern.h~taskstats_tgid_alloc-optimization
+++ a/include/linux/taskstats_kern.h
@@ -32,6 +32,9 @@ static inline void taskstats_tgid_alloc(
struct taskstats *stats;
unsigned long flags;
+ if (sig->stats != NULL)
+ return;
+
stats = kmem_cache_zalloc(taskstats_cache, SLAB_KERNEL);
if (!stats)
return;
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
tty-signal-tty-locking.patch
do_task_stat-dont-take-tty_mutex.patch
do_acct_process-dont-take-tty_mutex.patch
trivial-make-set_special_pids-static.patch
sys_unshare-remove-a-broken-clone_sighand-code.patch
sys_setpgid-eliminate-unnecessary-do_each_task_pidpidtype_pgid.patch
session_of_pgrp-kill-unnecessary-do_each_task_pidpidtype_pgid.patch
pidhash-temporary-debug-checks.patch
-
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