john stultz 4614a696bd procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm ...

Setting a thread's comm to be something unique is a very useful ability
and is helpful for debugging complicated threaded applications.  However
currently the only way to set a thread name is for the thread to name
itself via the PR_SET_NAME prctl.

However, there may be situations where it would be advantageous for a
thread dispatcher to be naming the threads its managing, rather then
having the threads self-describe themselves.  This sort of behavior is
available on other systems via the pthread_setname_np() interface.

This patch exports a task's comm via proc/pid/comm and
proc/pid/task/tid/comm interfaces, and allows thread siblings to write to
these values.

[akpm@linux-foundation.org: cleanups]
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Mike Fulton <fultonm@ca.ibm.com>
Cc: Sean Foley <Sean_Foley@ca.ibm.com>
Cc: Darren Hart <dvhltc@us.ibm.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2009-12-15 08:53:24 -08:00

..

9p

9p: fix build breakage introduced by FS-Cache

2009-12-01 07:35:11 -08:00

adfs

adfs: remove redundant test on unsigned

2009-09-24 07:21:05 -07:00

affs

affs: add ->sync_fs

2009-06-11 21:36:14 -04:00

afs

afs: remove manual O_SYNC handling

2009-12-10 15:02:50 +01:00

autofs

trivial: remove unnecessary semicolons

2009-09-21 15:14:58 +02:00

autofs4

autofs4 - fix missed case when changing to use struct path

2009-08-31 17:44:05 -10:00

befs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

bfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

btrfs

vfs: Implement proper O_SYNC semantics

2009-12-10 15:02:50 +01:00

cachefiles

CacheFiles: Update IMA counters when using dentry_open

2009-12-01 07:35:11 -08:00

cifs

vfs: Implement proper O_SYNC semantics

2009-12-10 15:02:50 +01:00

coda

sysctl: Drop & in front of every proc_handler.

2009-11-18 08:37:40 -08:00

configfs

writeback: add name to backing_dev_info

2009-09-11 09:20:26 +02:00

cramfs

fs/cramfs: return f_fsid for statfs(2)

2009-04-02 19:05:08 -07:00

debugfs

debugfs: fix create mutex racy fops and private data

2009-12-11 11:24:53 -08:00

devpts

devpts_get_tty() should validate inode

2009-12-11 15:18:05 -08:00

dlm

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/dlm

2009-12-10 09:33:59 -08:00

ecryptfs

ima: ecryptfs fix imbalance message

2009-10-08 11:31:38 -05:00

efs

get rid of BKL in fs/efs

2009-06-17 00:36:36 -04:00

exofs

exofs: Multi-device mirror support

2009-12-10 09:59:23 +02:00

exportfs

Merge branch 'next' into for-linus

2008-12-25 11:40:09 +11:00

ext2

ext2: fix comment in ext2_find_entry about return values

2009-12-10 15:02:53 +01:00

ext3

ext3: PTR_ERR return of wrong pointer in setup_new_group_blocks()

2009-12-10 15:02:55 +01:00

ext4

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2009-12-14 09:58:24 -08:00

fat

Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6

2009-09-30 09:31:14 -07:00

freevxfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

fscache

FS-Cache: Provide nop fscache_stat_d() if CONFIG_FSCACHE_STATS=n

2009-11-20 21:50:44 +00:00

fuse

fuse: reject O_DIRECT flag also in fuse_create

2009-11-27 16:37:13 +01:00

gfs2

GFS2: Fix glock refcount issues

2009-12-03 12:00:12 +00:00

hfs

hfs: fix a potential buffer overflow

2009-12-15 08:53:10 -08:00

hfsplus

hfsplus: refuse to mount volumes larger than 2TB

2009-10-29 07:39:27 -07:00

hostfs

hostfs: set maximum filesize in superblock for proper LFS support

2009-06-30 18:56:03 -07:00

hpfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

hppfs

hppfs: hppfs_read_file() may return -ERROR

2009-04-02 19:04:53 -07:00

hugetlbfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2009-09-24 08:32:11 -07:00

isofs

zisofs: Implement reading of compressed files when PAGE_CACHE_SIZE > compress block size

2009-12-10 15:02:49 +01:00

jbd

fs/jbd: Export log_start_commit to fix ext3 build.

2009-11-12 10:24:12 +01:00

jbd2

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6

2009-12-11 15:31:13 -08:00

jffs2

Merge branch 'for-next' into for-linus

2009-12-07 18:36:35 +01:00

jfs

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

lockd

sysctl: Drop & in front of every proc_handler.

2009-11-18 08:37:40 -08:00

minix

V3 minixfs: add missing directory type checking

2009-09-23 07:39:57 -07:00

ncpfs

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

nfs

Merge git://git.linux-nfs.org/projects/trondmy/nfs-2.6

2009-12-14 10:00:24 -08:00

nfs_common

SUNRPC: nfsacl_encode/nfsacl_decode should be exported as GPL-only

2008-12-23 15:21:32 -05:00

nfsd

Fix memory corruption caused by nfsd readdir+

2009-11-14 12:55:55 -08:00

nilfs2

nilfs2: separate wait function from nilfs_segctor_write

2009-11-30 21:17:52 +09:00

nls

Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6

2009-09-30 09:31:14 -07:00

notify

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-12-09 19:43:33 -08:00

ntfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-12-09 19:43:33 -08:00

ocfs2

quota: Move definition of QFMT_OCFS2 to linux/quota.h

2009-12-10 15:02:53 +01:00

omfs

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

openpromfs

zero i_uid/i_gid on inode allocation

2009-01-05 11:54:28 -05:00

partitions

partitions: read whole sector with EFI GPT header

2009-11-23 09:29:58 +01:00

proc

procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm

2009-12-15 08:53:24 -08:00

qnx4

qnx4fs: add missing KERN_xxx to printk() calls

2009-11-09 09:40:57 +01:00

quota

quota: Implement quota format with 64-bit space and inode limits

2009-12-10 15:02:54 +01:00

ramfs

truncate: use new helpers

2009-09-24 08:41:47 -04:00

reiserfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-12-09 19:43:33 -08:00

romfs

ROMFS: fix length used with romfs_dev_strnlen() function

2009-10-11 11:33:56 -07:00

smbfs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

squashfs

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

sysfs

sysfs: sysfs_setattr remove unnecessary permission check.

2009-12-11 11:24:54 -08:00

sysv

get rid of BKL in fs/sysv

2009-06-17 00:36:37 -04:00

ubifs

Merge git://git.infradead.org/ubifs-2.6

2009-12-10 09:31:45 -08:00

udf

udf: Avoid IO in udf_clear_inode

2009-12-14 21:40:04 +01:00

ufs

ufs: sector_t cannot be negative

2009-06-18 13:03:46 -07:00

xfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu

2009-12-14 09:58:24 -08:00

aio.c

block: move bdi/address_space unplug functions to backing-dev.h

2009-10-29 13:59:26 +01:00

anon_inodes.c

headers: remove sched.h from poll.h

2009-10-04 15:05:10 -07:00

attr.c

truncate: new helpers

2009-09-24 08:41:47 -04:00

bad_inode.c

kill ->dir_notify()

2008-12-31 18:07:43 -05:00

binfmt_aout.c

sanitize ifdefs in binfmt_aout

2009-01-03 11:45:54 -08:00

binfmt_elf_fdpic.c

nommu: fix malloc performance by adding uninitialized flag

2009-12-15 08:53:24 -08:00

binfmt_elf.c

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

binfmt_em86.c

…

binfmt_flat.c

flat: use IS_ERR_VALUE() helper macro

2009-09-24 07:21:03 -07:00

binfmt_misc.c

fs/binfmt_misc.c: add terminating newline to /proc/sys/fs/binfmt_misc/status

2009-01-06 15:59:19 -08:00

binfmt_script.c

…

binfmt_som.c

Don't crap into descriptor table in binfmt_som

2009-03-31 23:00:28 -04:00

bio-integrity.c

block: Create bip slabs with embedded integrity vectors

2009-07-01 10:56:25 +02:00

bio.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2009-12-09 19:43:33 -08:00

block_dev.c

Merge branch 'for-linus' into for-2.6.33

2009-11-03 21:14:39 +01:00

buffer.c

Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block

2009-09-25 09:27:30 -07:00

char_dev.c

fs/char_dev.c: remove useless loop

2009-09-24 07:21:03 -07:00

compat_binfmt_elf.c

…

compat_ioctl.c

md: move compat_ioctl handling into md.c

2009-12-14 12:51:41 +11:00

compat.c

x86, fs: Fix x86 procfs stack information for threads on 64-bit

2009-11-04 13:25:03 +01:00

dcache.c

sched: Pull up the might_sleep() check into cond_resched()

2009-07-18 15:51:44 +02:00

dcookies.c

[CVE-2009-0029] System call wrapper special cases

2009-01-14 14:15:18 +01:00

direct-io.c

Fix regression in direct writes performance due to WRITE_ODIRECT flag removal

2009-11-26 09:46:46 +01:00

drop_caches.c

sysctl: remove "struct file *" argument of ->proc_handler

2009-09-24 07:21:04 -07:00

eventfd.c

anonfd: split interface into file creation and install

2009-09-23 07:39:29 -07:00

eventpoll.c

sysctl: Drop & in front of every proc_handler.

2009-11-18 08:37:40 -08:00

exec.c

procfs: allow threads to rename siblings via /proc/pid/tasks/tid/comm

2009-12-15 08:53:24 -08:00

fcntl.c

fcntl: rename F_OWNER_GID to F_OWNER_PGRP

2009-11-17 17:40:33 -08:00

fifo.c

…

file_table.c

LSM: imbed ima calls in the security hooks

2009-10-25 12:22:48 +08:00

file.c

headers: remove sched.h from interrupt.h

2009-10-11 11:20:58 -07:00

filesystems.c

fs: Mark get_filesystem_list() as __init function.

2009-04-20 23:02:52 -04:00

fs_struct.c

Get rid of indirect include of fs_struct.h

2009-03-31 23:00:27 -04:00

fs-writeback.c

writeback: remove unused nonblocking and congestion checks

2009-12-03 13:54:25 +01:00

generic_acl.c

New helper - current_umask()

2009-03-31 23:00:26 -04:00

inode.c

LSM: imbed ima calls in the security hooks

2009-10-25 12:22:48 +08:00

internal.h

fs: fix overflow in sys_mount() for in-kernel calls

2009-09-24 08:40:15 -04:00

ioctl.c

__generic_block_fiemap(): fix for files bigger than 4GB

2009-11-12 07:26:01 -08:00

ioprio.c

[CVE-2009-0029] System call wrappers part 28

2009-01-14 14:15:30 +01:00

Kconfig

powerpc: Cleanup Kconfig selection of hugetlbfs support

2009-10-30 15:03:54 +11:00

Kconfig.binfmt

CORE_DUMP_DEFAULT_ELF_HEADERS depends on ELF_CORE

2009-01-09 16:54:41 -08:00

libfs.c

libfs: return error code on failed attr set

2009-09-24 07:47:30 -04:00

locks.c

const: make lock_manager_operations const

2009-09-22 07:17:25 -07:00

Makefile

nilfs2: update makefile and Kconfig

2009-04-07 08:31:16 -07:00

mbcache.c

…

mpage.c

ext4: Properly initialize the buffer_head state

2009-05-13 15:13:42 -04:00

namei.c

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6

2009-12-11 15:31:13 -08:00

namespace.c

LSM: Pass original mount flags to security_sb_mount().

2009-10-12 10:56:03 +11:00

nfsctl.c

[CVE-2009-0029] System call wrappers part 27

2009-01-14 14:15:29 +01:00

no-block.c

…

open.c

LSM: Move security_path_chmod()/security_path_chown() to after mutex_lock().

2009-11-24 08:49:26 +11:00

pipe.c

fs: pipe.c null pointer dereference

2009-10-22 08:11:44 +09:00

pnode.c

…

pnode.h

…

posix_acl.c

…

read_write.c

sendfile(): check f_op.splice_write() rather than f_op.sendpage()

2009-11-04 09:09:52 +01:00

read_write.h

…

readdir.c

[CVE-2009-0029] System call wrappers part 32

2009-01-14 14:15:31 +01:00

select.c

headers: remove sched.h from poll.h

2009-10-04 15:05:10 -07:00

seq_file.c

vfs: seq_file: add helpers for data filling

2009-09-24 07:47:35 -04:00

signalfd.c

[CVE-2009-0029] System call wrappers part 31

2009-01-14 14:15:31 +01:00

splice.c

sendfile(): check f_op.splice_write() rather than f_op.sendpage()

2009-11-04 09:09:52 +01:00

stack.c

…

stat.c

kill vfs_stat_fd / vfs_lstat_fd

2009-04-20 23:02:52 -04:00

super.c

freeze_bdev: grab active reference to frozen superblocks

2009-09-24 07:47:41 -04:00

sync.c

kill wait_on_page_writeback_range

2009-12-10 15:02:50 +01:00

timerfd.c

timerfd: add flags check

2009-02-18 15:37:53 -08:00

utimes.c

[CVE-2009-0029] System call wrappers part 30

2009-01-14 14:15:30 +01:00

xattr_acl.c

VFS: Use GFP_NOFS in posix_acl_from_xattr()

2009-12-03 11:48:07 +00:00

xattr.c

VFS: Factor out part of vfs_setxattr so it can be called from the SELinux hook for inode_setsecctx.

2009-09-10 10:11:22 +10:00