From nobody Thu Apr 9 19:25:49 2026 Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1F27228CF77 for ; Sat, 7 Mar 2026 08:48:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772873285; cv=none; b=hORVPBiPo0Y5j22IZWpH0sdXpGikZ/fFkVpT3Kwn0PbtKbl8SOxmCvcsGrn7Ry8nI8Pp4X3o2zdsK4p2FpKr2kp+eQCKLWk9L29FKSrTuWyfNfZwD3MXOr1S/V78CXOo/Sp02tiNLv1wF4MGErudT0cASZSsfTA6Khjp0jxhQiA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772873285; c=relaxed/simple; bh=zcKMT7cfUTkUsO/39j+EEQreNID7clD6xBPft/56BQU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=nTn7LuTgg3cW4aMMNN4sJltr9n21OtqM5fAY0CbLnev1ibwdAKb7J2Che5bYwThrWCS6QeYKzrzUpCLA5CPxciGmDN+Pf9XqMmy0yY+aw9vDt+F3PZ6LCchu93GkQxyD1f7Vi6PCyiU7ViF6wUzy0nX5XnyOJn3PqMo9JfoMIqg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=hmwvoot3; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="hmwvoot3" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1772873282; bh=zcKMT7cfUTkUsO/39j+EEQreNID7clD6xBPft/56BQU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=hmwvoot3oiVsrW9EQlZGxjwB7E47+qE0IcyZfF7J188S6Tk0mHTHxtq58K4T4dmKS RnN8bwLM1ta+S+d7D6J6guePVbTn5idrPx0UgEVNNncVpJRuh/90V0bYq4gb86bqTn QawaLodyoZPnDFH74ZoTvccE3qFhu7Nw9Tb+9W94= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Sat, 07 Mar 2026 09:47:52 +0100 Subject: [PATCH 1/2] tools headers UAPI: Sync linux/taskstats.h Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260307-accounting-taskstats-h-v1-1-0b75915c6ce5@weissschuh.net> References: <20260307-accounting-taskstats-h-v1-0-0b75915c6ce5@weissschuh.net> In-Reply-To: <20260307-accounting-taskstats-h-v1-0-0b75915c6ce5@weissschuh.net> To: Balbir Singh , Yang Yang , Wang Yaxin , Andrew Morton Cc: Arnd Bergmann , xu xin , Kun Jiang , linux-kernel@vger.kernel.org, =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1772873281; l=10416; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=zcKMT7cfUTkUsO/39j+EEQreNID7clD6xBPft/56BQU=; b=lkyvLGxL5GZnRIrQS6uR/ANioLiaSWUU5AcWaxIKmLfJubP7f1Yizj2hmNrrtOfe57WELBbUU /2wEc48OKXOC1OZOzlm7e+MOZLnoBn4zOWDsWYpnvM1WphnMTPB/P0x X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= To give the accounting tools access to the new fields introduced in commit 503efe850c74 ("delayacct: add timestamp of delay max") Signed-off-by: Thomas Wei=C3=9Fschuh --- tools/include/uapi/linux/taskstats.h | 291 +++++++++++++++++++++++++++++++= ++++ 1 file changed, 291 insertions(+) diff --git a/tools/include/uapi/linux/taskstats.h b/tools/include/uapi/linu= x/taskstats.h new file mode 100644 index 000000000000..3ae25f3ce067 --- /dev/null +++ b/tools/include/uapi/linux/taskstats.h @@ -0,0 +1,291 @@ +/* SPDX-License-Identifier: LGPL-2.1 WITH Linux-syscall-note */ +/* 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 +#include + +/* 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 17 +#define TS_COMM_LEN 32 /* should be >=3D 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 . + * 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 + * Defined values are AFORK, ASU, ACOMPAT, ACORE, AXSIG, and AGROUP. + * (AGROUP since version 12). + */ + __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 range means times from 1970 to 2106 */ + __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; + + + /* Delay waiting for thrashing page */ + __u64 thrashing_count; + __u64 thrashing_delay_total; + + /* v10: 64-bit btime to avoid overflow */ + __u64 ac_btime64; /* 64-bit begin time */ + + /* v11: Delay waiting for memory compact */ + __u64 compact_count; + __u64 compact_delay_total; + + /* v12 begin */ + __u32 ac_tgid; /* thread group ID */ + /* Thread group walltime up to now. This is total process walltime if + * AGROUP flag is set. + */ + __u64 ac_tgetime __attribute__((aligned(8))); + /* Lightweight information to identify process binary files. + * This leaves userspace to match this to a file system path, using + * MAJOR() and MINOR() macros to identify a device and mount point, + * the inode to identify the executable file. This is /proc/self/exe + * at the end, so matching the most recent exec(). Values are zero + * for kernel threads. + */ + __u64 ac_exe_dev; /* program binary device ID */ + __u64 ac_exe_inode; /* program binary inode number */ + /* v12 end */ + + /* v13: Delay waiting for write-protect copy */ + __u64 wpcopy_count; + __u64 wpcopy_delay_total; + + /* v14: Delay waiting for IRQ/SOFTIRQ */ + __u64 irq_count; + __u64 irq_delay_total; + + /* v15: add Delay max and Delay min */ + + /* v16: move Delay max and Delay min to the end of taskstat */ + __u64 cpu_delay_max; + __u64 cpu_delay_min; + + __u64 blkio_delay_max; + __u64 blkio_delay_min; + + __u64 swapin_delay_max; + __u64 swapin_delay_min; + + __u64 freepages_delay_max; + __u64 freepages_delay_min; + + __u64 thrashing_delay_max; + __u64 thrashing_delay_min; + + __u64 compact_delay_max; + __u64 compact_delay_min; + + __u64 wpcopy_delay_max; + __u64 wpcopy_delay_min; + + __u64 irq_delay_max; + __u64 irq_delay_min; + + /*v17: delay max timestamp record*/ + struct __kernel_timespec cpu_delay_max_ts; + struct __kernel_timespec blkio_delay_max_ts; + struct __kernel_timespec swapin_delay_max_ts; + struct __kernel_timespec freepages_delay_max_ts; + struct __kernel_timespec thrashing_delay_max_ts; + struct __kernel_timespec compact_delay_max_ts; + struct __kernel_timespec wpcopy_delay_max_ts; + struct __kernel_timespec irq_delay_max_ts; +}; + + +/* + * 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 =3D 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 =3D 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 =3D 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 */ --=20 2.53.0