Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 213 insertions, 0 deletions

diff --git a/kernel/include/uapi/linux/taskstats.h b/kernel/include/uapi/linux/taskstats.h
new file mode 100644
index 000000000..2466e550a
--- /dev/null
+++ b/kernel/include/uapi/linux/taskstats.h
@@ -0,0 +1,213 @@
+/* taskstats.h - exporting per-task statistics
+ *
+ * Copyright (C) Shailabh Nagar, IBM Corp. 2006
+ *           (C) Balbir Singh,   IBM Corp. 2006
+ *           (C) Jay Lan,        SGI, 2006
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of version 2.1 of the GNU Lesser General Public License
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it would be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+ */
+
+#ifndef _LINUX_TASKSTATS_H
+#define _LINUX_TASKSTATS_H
+
+#include <linux/types.h>
+
+/* Format for per-task data returned to userland when
+ *	- a task exits
+ *	- listener requests stats for a task
+ *
+ * The struct is versioned. Newer versions should only add fields to
+ * the bottom of the struct to maintain backward compatibility.
+ *
+ *
+ * To add new fields
+ *	a) bump up TASKSTATS_VERSION
+ *	b) add comment indicating new version number at end of struct
+ *	c) add new fields after version comment; maintain 64-bit alignment
+ */
+
+
+#define TASKSTATS_VERSION	8
+#define TS_COMM_LEN		32	/* should be >= TASK_COMM_LEN
+					 * in linux/sched.h */
+
+struct taskstats {
+
+	/* The version number of this struct. This field is always set to
+	 * TAKSTATS_VERSION, which is defined in <linux/taskstats.h>.
+	 * Each time the struct is changed, the value should be incremented.
+	 */
+	__u16	version;
+	__u32	ac_exitcode;		/* Exit status */
+
+	/* The accounting flags of a task as defined in <linux/acct.h>
+	 * Defined values are AFORK, ASU, ACOMPAT, ACORE, and AXSIG.
+	 */
+	__u8	ac_flag;		/* Record flags */
+	__u8	ac_nice;		/* task_nice */
+
+	/* Delay accounting fields start
+	 *
+	 * All values, until comment "Delay accounting fields end" are
+	 * available only if delay accounting is enabled, even though the last
+	 * few fields are not delays
+	 *
+	 * xxx_count is the number of delay values recorded
+	 * xxx_delay_total is the corresponding cumulative delay in nanoseconds
+	 *
+	 * xxx_delay_total wraps around to zero on overflow
+	 * xxx_count incremented regardless of overflow
+	 */
+
+	/* Delay waiting for cpu, while runnable
+	 * count, delay_total NOT updated atomically
+	 */
+	__u64	cpu_count __attribute__((aligned(8)));
+	__u64	cpu_delay_total;
+
+	/* Following four fields atomically updated using task->delays->lock */
+
+	/* Delay waiting for synchronous block I/O to complete
+	 * does not account for delays in I/O submission
+	 */
+	__u64	blkio_count;
+	__u64	blkio_delay_total;
+
+	/* Delay waiting for page fault I/O (swap in only) */
+	__u64	swapin_count;
+	__u64	swapin_delay_total;
+
+	/* cpu "wall-clock" running time
+	 * On some architectures, value will adjust for cpu time stolen
+	 * from the kernel in involuntary waits due to virtualization.
+	 * Value is cumulative, in nanoseconds, without a corresponding count
+	 * and wraps around to zero silently on overflow
+	 */
+	__u64	cpu_run_real_total;
+
+	/* cpu "virtual" running time
+	 * Uses time intervals seen by the kernel i.e. no adjustment
+	 * for kernel's involuntary waits due to virtualization.
+	 * Value is cumulative, in nanoseconds, without a corresponding count
+	 * and wraps around to zero silently on overflow
+	 */
+	__u64	cpu_run_virtual_total;
+	/* Delay accounting fields end */
+	/* version 1 ends here */
+
+	/* Basic Accounting Fields start */
+	char	ac_comm[TS_COMM_LEN];	/* Command name */
+	__u8	ac_sched __attribute__((aligned(8)));
+					/* Scheduling discipline */
+	__u8	ac_pad[3];
+	__u32	ac_uid __attribute__((aligned(8)));
+					/* User ID */
+	__u32	ac_gid;			/* Group ID */
+	__u32	ac_pid;			/* Process ID */
+	__u32	ac_ppid;		/* Parent process ID */
+	__u32	ac_btime;		/* Begin time [sec since 1970] */
+	__u64	ac_etime __attribute__((aligned(8)));
+					/* Elapsed time [usec] */
+	__u64	ac_utime;		/* User CPU time [usec] */
+	__u64	ac_stime;		/* SYstem CPU time [usec] */
+	__u64	ac_minflt;		/* Minor Page Fault Count */
+	__u64	ac_majflt;		/* Major Page Fault Count */
+	/* Basic Accounting Fields end */
+
+	/* Extended accounting fields start */
+	/* Accumulated RSS usage in duration of a task, in MBytes-usecs.
+	 * The current rss usage is added to this counter every time
+	 * a tick is charged to a task's system time. So, at the end we
+	 * will have memory usage multiplied by system time. Thus an
+	 * average usage per system time unit can be calculated.
+	 */
+	__u64	coremem;		/* accumulated RSS usage in MB-usec */
+	/* Accumulated virtual memory usage in duration of a task.
+	 * Same as acct_rss_mem1 above except that we keep track of VM usage.
+	 */
+	__u64	virtmem;		/* accumulated VM  usage in MB-usec */
+
+	/* High watermark of RSS and virtual memory usage in duration of
+	 * a task, in KBytes.
+	 */
+	__u64	hiwater_rss;		/* High-watermark of RSS usage, in KB */
+	__u64	hiwater_vm;		/* High-water VM usage, in KB */
+
+	/* The following four fields are I/O statistics of a task. */
+	__u64	read_char;		/* bytes read */
+	__u64	write_char;		/* bytes written */
+	__u64	read_syscalls;		/* read syscalls */
+	__u64	write_syscalls;		/* write syscalls */
+	/* Extended accounting fields end */
+
+#define TASKSTATS_HAS_IO_ACCOUNTING
+	/* Per-task storage I/O accounting starts */
+	__u64	read_bytes;		/* bytes of read I/O */
+	__u64	write_bytes;		/* bytes of write I/O */
+	__u64	cancelled_write_bytes;	/* bytes of cancelled write I/O */
+
+	__u64  nvcsw;			/* voluntary_ctxt_switches */
+	__u64  nivcsw;			/* nonvoluntary_ctxt_switches */
+
+	/* time accounting for SMT machines */
+	__u64	ac_utimescaled;		/* utime scaled on frequency etc */
+	__u64	ac_stimescaled;		/* stime scaled on frequency etc */
+	__u64	cpu_scaled_run_real_total; /* scaled cpu_run_real_total */
+
+	/* Delay waiting for memory reclaim */
+	__u64	freepages_count;
+	__u64	freepages_delay_total;
+};
+
+
+/*
+ * Commands sent from userspace
+ * Not versioned. New commands should only be inserted at the enum's end
+ * prior to __TASKSTATS_CMD_MAX
+ */
+
+enum {
+	TASKSTATS_CMD_UNSPEC = 0,	/* Reserved */
+	TASKSTATS_CMD_GET,		/* user->kernel request/get-response */
+	TASKSTATS_CMD_NEW,		/* kernel->user event */
+	__TASKSTATS_CMD_MAX,
+};
+
+#define TASKSTATS_CMD_MAX (__TASKSTATS_CMD_MAX - 1)
+
+enum {
+	TASKSTATS_TYPE_UNSPEC = 0,	/* Reserved */
+	TASKSTATS_TYPE_PID,		/* Process id */
+	TASKSTATS_TYPE_TGID,		/* Thread group id */
+	TASKSTATS_TYPE_STATS,		/* taskstats structure */
+	TASKSTATS_TYPE_AGGR_PID,	/* contains pid + stats */
+	TASKSTATS_TYPE_AGGR_TGID,	/* contains tgid + stats */
+	TASKSTATS_TYPE_NULL,		/* contains nothing */
+	__TASKSTATS_TYPE_MAX,
+};
+
+#define TASKSTATS_TYPE_MAX (__TASKSTATS_TYPE_MAX - 1)
+
+enum {
+	TASKSTATS_CMD_ATTR_UNSPEC = 0,
+	TASKSTATS_CMD_ATTR_PID,
+	TASKSTATS_CMD_ATTR_TGID,
+	TASKSTATS_CMD_ATTR_REGISTER_CPUMASK,
+	TASKSTATS_CMD_ATTR_DEREGISTER_CPUMASK,
+	__TASKSTATS_CMD_ATTR_MAX,
+};
+
+#define TASKSTATS_CMD_ATTR_MAX (__TASKSTATS_CMD_ATTR_MAX - 1)
+
+/* NETLINK_GENERIC related info */
+
+#define TASKSTATS_GENL_NAME	"TASKSTATS"
+#define TASKSTATS_GENL_VERSION	0x1
+
+#endif /* _LINUX_TASKSTATS_H */