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/*
* Copyright (C) 2012 Spreadtrum Communications Inc.
*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/sched.h>
#include <linux/sysrq.h>
#include <linux/nmi.h>
void show_state_group(unsigned long state_filter)
{
struct task_struct *p, *g;
rcu_read_lock();
do_each_thread(g, p) {
touch_nmi_watchdog();
if (p->state & state_filter){
printk(KERN_INFO "\nGroup: %s - %d\n", g->comm, g->pid);
/* dump all threads stack in same group */
p = g;
do{
sched_show_task(p);
}while_each_thread(g, p);
break;
}
} while_each_thread(g, p);
rcu_read_unlock();
}
static void sysrq_handle_show_blocked_group(int key)
{
show_state_group(TASK_UNINTERRUPTIBLE);
}
struct sysrq_key_op sysrq_show_blocked_group_op = {
.handler = sysrq_handle_show_blocked_group,
.help_msg = "show-blocked-group(x)",
.action_msg = "Show Blocked Group State",
.enable_mask = SYSRQ_ENABLE_DUMP,
};
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