From 52de4779f201758ddcf37360f09a16895756e708 Mon Sep 17 00:00:00 2001 From: Zefan Li Date: Thu, 18 Sep 2014 16:03:36 +0800 Subject: cpuset: simplify proc_cpuset_show() Use the ONE macro instead of REG, and we can simplify proc_cpuset_show(). Signed-off-by: Zefan Li Signed-off-by: Tejun Heo --- kernel/cpuset.c | 15 +++------------ 1 file changed, 3 insertions(+), 12 deletions(-) (limited to 'kernel/cpuset.c') diff --git a/kernel/cpuset.c b/kernel/cpuset.c index 22874d7cf2c..a37f4ed2486 100644 --- a/kernel/cpuset.c +++ b/kernel/cpuset.c @@ -2729,10 +2729,9 @@ void __cpuset_memory_pressure_bump(void) * and we take cpuset_mutex, keeping cpuset_attach() from changing it * anyway. */ -int proc_cpuset_show(struct seq_file *m, void *unused_v) +int proc_cpuset_show(struct seq_file *m, struct pid_namespace *ns, + struct pid *pid, struct task_struct *tsk) { - struct pid *pid; - struct task_struct *tsk; char *buf, *p; struct cgroup_subsys_state *css; int retval; @@ -2742,24 +2741,16 @@ int proc_cpuset_show(struct seq_file *m, void *unused_v) if (!buf) goto out; - retval = -ESRCH; - pid = m->private; - tsk = get_pid_task(pid, PIDTYPE_PID); - if (!tsk) - goto out_free; - retval = -ENAMETOOLONG; rcu_read_lock(); css = task_css(tsk, cpuset_cgrp_id); p = cgroup_path(css->cgroup, buf, PATH_MAX); rcu_read_unlock(); if (!p) - goto out_put_task; + goto out_free; seq_puts(m, p); seq_putc(m, '\n'); retval = 0; -out_put_task: - put_task_struct(tsk); out_free: kfree(buf); out: -- cgit v1.2.3-70-g09d2