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Commit cd85fc58 authored by Christoph Lameter's avatar Christoph Lameter Committed by Tejun Heo
Browse files

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: default avatarH. Peter Anvin <hpa@zytor.com>
Signed-off-by: default avatarChristoph Lameter <cl@linux.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent b29c617a

kernel/taskstats.c

+2 −3
Original line number Diff line number Diff line
@@ -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;