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Code Issues Releases Wiki Activity

taskstats: Use this_cpu_ops 

Use this_cpu_inc_return in one place and avoid ugly __raw_get_cpu in
another.

V3->V4:
	- Fix off by one.

V4-V4f:
	- Use &listener_array

Cc: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Christoph Lameter 2010-12-08 17:42:22 +01:00 committed by Tejun Heo
parent b29c617af3
commit cd85fc58cd
1 changed files with 2 additions and 3 deletions
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5
kernel/taskstats.c
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@ -89,8 +89,7 @@ static int prepare_reply(struct genl_info *info, u8 cmd, struct sk_buff **skbp,
return -ENOMEM;
if (!info) {
int seq = get_cpu_var(taskstats_seqnum)++;
put_cpu_var(taskstats_seqnum);
int seq = this_cpu_inc_return(taskstats_seqnum) - 1;
reply = genlmsg_put(skb, 0, seq, &family, 0, cmd);
} else
@ -581,7 +580,7 @@ void taskstats_exit(struct task_struct *tsk, int group_dead)
fill_tgid_exit(tsk);
}
listeners = &__raw_get_cpu_var(listener_array);
listeners = __this_cpu_ptr(&listener_array);
if (list_empty(&listeners->list))
return;