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#! /usr/bin/env stap
/* Filename: migrate.stp
* Author: Ankita Garg <ankita@in.ibm.com>
* Description: Captures information on the migration of a thread
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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.
*
* Copyright (C) IBM Corp. 2009. All Rights Reserved.
* Copyright (C) 2015 Red Hat Inc.
*
*/
probe kernel.trace("sched_migrate_task") !, kernel.function("__migrate_task")
{
comm = task_execname($p)
if (comm == @1) {
printf ("thread %d (%s) is migrating from %d to %d \n",
task_tid($p), comm, task_cpu($p),
@choose_defined($new_cpu, $dest_cpu))
}
}
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