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-rw-r--r--include/linux/taskstats.h84
1 files changed, 84 insertions, 0 deletions
diff --git a/include/linux/taskstats.h b/include/linux/taskstats.h
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+/* taskstats.h - exporting per-task statistics
+ *
+ * Copyright (C) Shailabh Nagar, IBM Corp. 2006
+ * (C) Balbir Singh, IBM Corp. 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
+
+/* 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 1
+
+struct taskstats {
+
+ /* Version 1 */
+ __u64 version;
+};
+
+
+#define TASKSTATS_LISTEN_GROUP 0x1
+
+/*
+ * 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_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_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 */