- 21 9月, 2014 1 次提交
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由 Zefan Li 提交于
The patch 971ff493: "cgroup: use a per-cgroup work for release agent" from Sep 18, 2014, leads to the following static checker warning: kernel/cgroup.c:5310 cgroup_release_agent() warn: 'mutex:&cgroup_mutex' is sometimes locked here and sometimes unlocked. Reported-by: NDan Carpenter <dan.carpenter@oracle.com> Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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- 19 9月, 2014 6 次提交
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由 Zefan Li 提交于
We call put_css_set() after setting CGRP_RELEASABLE flag in cgroup_task_migrate(), but in other places we call it without setting the flag. I don't see the necessity of this flag. Moreover once the flag is set, it will never be cleared, unless writing to the notify_on_release control file, so it can be quite confusing if we look at the output of debug.releasable. # mount -t cgroup -o debug xxx /cgroup # mkdir /cgroup/child # cat /cgroup/child/debug.releasable 0 <-- shows 0 though the cgroup is empty # echo $$ > /cgroup/child/tasks # cat /cgroup/child/debug.releasable 0 # echo $$ > /cgroup/tasks && echo $$ > /cgroup/child/tasks # cat /proc/child/debug.releasable 1 <-- shows 1 though the cgroup is not empty This patch removes the flag, and now debug.releasable shows if the cgroup is empty or not. Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Zefan Li 提交于
Commit 5a17f543 ("cgroup: improve css_from_dir() into css_tryget_from_dir()") removed perf_tryget_cgroup(), so let's also remove perf_put_cgroup(). Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Zefan Li 提交于
After we implemented default unified hierarchy, cgrp->kn can never be NULL. Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Zefan Li 提交于
Use the ONE macro instead of REG, and we can simplify proc_cpuset_show(). Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Zefan Li 提交于
Use the ONE macro instead of REG, and we can simplify proc_cgroup_show(). Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Zefan Li 提交于
Instead of using a global work to schedule release agent on removable cgroups, we change to use a per-cgroup work to do this, which makes the code much simpler. v2: use a dedicated work instead of reusing css->destroy_work. (Tejun) Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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- 18 9月, 2014 4 次提交
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由 Li Zefan 提交于
We never grab cgroup mutex in fork and exit paths no matter whether notify_on_release is set or not. Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Li Zefan 提交于
We no longer clear kn->priv in cgroup_rmdir(), so we don't need to get an extra refcnt. Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Li Zefan 提交于
Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Tejun Heo 提交于
Pull to receive a4189487 ("cgroup: delay the clearing of cgrp->kn->priv") for the scheduled clean up patches. Signed-off-by: NTejun Heo <tj@kernel.org>
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- 05 9月, 2014 2 次提交
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由 Li Zefan 提交于
When cgroup_kn_lock_live() is called through some kernfs operation and another thread is calling cgroup_rmdir(), we'll trigger the warning in cgroup_get(). ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1228 at kernel/cgroup.c:1034 cgroup_get+0x89/0xa0() ... Call Trace: [<c16ee73d>] dump_stack+0x41/0x52 [<c10468ef>] warn_slowpath_common+0x7f/0xa0 [<c104692d>] warn_slowpath_null+0x1d/0x20 [<c10bb999>] cgroup_get+0x89/0xa0 [<c10bbe58>] cgroup_kn_lock_live+0x28/0x70 [<c10be3c1>] __cgroup_procs_write.isra.26+0x51/0x230 [<c10be5b2>] cgroup_tasks_write+0x12/0x20 [<c10bb7b0>] cgroup_file_write+0x40/0x130 [<c11aee71>] kernfs_fop_write+0xd1/0x160 [<c1148e58>] vfs_write+0x98/0x1e0 [<c114934d>] SyS_write+0x4d/0xa0 [<c16f656b>] sysenter_do_call+0x12/0x12 ---[ end trace 6f2e0c38c2108a74 ]--- Fix this by calling css_tryget() instead of cgroup_get(). v2: - move cgroup_tryget() right below cgroup_get() definition. (Tejun) Cc: <stable@vger.kernel.org> # 3.15+ Reported-by: NToralf Förster <toralf.foerster@gmx.de> Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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由 Li Zefan 提交于
Run these two scripts concurrently: for ((; ;)) { mkdir /cgroup/sub rmdir /cgroup/sub } for ((; ;)) { echo $$ > /cgroup/sub/cgroup.procs echo $$ > /cgroup/cgroup.procs } A kernel bug will be triggered: BUG: unable to handle kernel NULL pointer dereference at 00000038 IP: [<c10bbd69>] cgroup_put+0x9/0x80 ... Call Trace: [<c10bbe19>] cgroup_kn_unlock+0x39/0x50 [<c10bbe91>] cgroup_kn_lock_live+0x61/0x70 [<c10be3c1>] __cgroup_procs_write.isra.26+0x51/0x230 [<c10be5b2>] cgroup_tasks_write+0x12/0x20 [<c10bb7b0>] cgroup_file_write+0x40/0x130 [<c11aee71>] kernfs_fop_write+0xd1/0x160 [<c1148e58>] vfs_write+0x98/0x1e0 [<c114934d>] SyS_write+0x4d/0xa0 [<c16f656b>] sysenter_do_call+0x12/0x12 We clear cgrp->kn->priv in the end of cgroup_rmdir(), but another concurrent thread can access kn->priv after the clearing. We should move the clearing to css_release_work_fn(). At that time no one is holding reference to the cgroup and no one can gain a new reference to access it. v2: - move RCU_INIT_POINTER() into the else block. (Tejun) - remove the cgroup_parent() check. (Tejun) - update the comment in css_tryget_online_from_dir(). Cc: <stable@vger.kernel.org> # 3.15+ Reported-by: NToralf Förster <toralf.foerster@gmx.de> Signed-off-by: NZefan Li <lizefan@huawei.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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- 25 8月, 2014 1 次提交
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由 Dongsheng Yang 提交于
There is no function named cgroup_enable_task_cg_links(). Instead, the correct function name in this comment should be cgroup_enabled_task_cg_lists(). Signed-off-by: NDongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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- 23 8月, 2014 1 次提交
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由 Vivek Goyal 提交于
Kernel command line parameter cgroup__DEVEL__legacy_files_on_dfl forces legacy cgroup files to show up on default hierarhcy if susbsystem does not have any files defined for default hierarchy. But this seems to be working only if legacy files are defined in ss->legacy_cftypes. If one adds some cftypes later using cgroup_add_legacy_cftypes(), these files don't show up on default hierarchy. Update the function accordingly so that the dynamically added legacy files also show up in the default hierarchy if the target subsystem is also using the base legacy files for the default hierarchy. tj: Patch description and comment updates. Signed-off-by: NVivek Goyal <vgoyal@redhat.com> Signed-off-by: NTejun Heo <tj@kernel.org>
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- 18 8月, 2014 1 次提交
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由 Alban Crequy 提交于
/proc/<pid>/cgroup contains one cgroup path on each line. If cgroup names are allowed to contain "\n", applications cannot parse /proc/<pid>/cgroup safely. Signed-off-by: NAlban Crequy <alban.crequy@collabora.co.uk> Signed-off-by: NTejun Heo <tj@kernel.org> Cc: stable@vger.kernel.org
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- 17 8月, 2014 1 次提交
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由 Linus Torvalds 提交于
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- 16 8月, 2014 23 次提交
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git://cavan.codon.org.uk/platform-drivers-x86由 Linus Torvalds 提交于
Pull x86 platform driver updates from Matthew Garrett: "A moderate number of changes, but nothing awfully significant. A lot of const cleanups, some reworking and additions to the rfkill quirks in the asus driver, a new driver for generating falling laptop events on Toshibas and some misc fixes. Maybe vendors have stopped inventing things" * 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (41 commits) platform/x86: Enable build support for toshiba_haps Documentation: Add file about toshiba_haps module platform/x86: Toshiba HDD Active Protection Sensor asus-nb-wmi: Add wapf4 quirk for the U32U alienware-wmi: make hdmi_mux enabled on case-by-case basis ideapad-laptop: Constify DMI table and other r/o variables asus-nb-wmi.c: Rename x401u quirk to wapf4 compal-laptop: correct invalid hwmon name toshiba_acpi: Add Qosmio X75-A to the alt keymap dmi list toshiba_acpi: Add extra check to backlight code Fix log message about future removal of interface ideapad-laptop: Disable touchpad interface on Yoga models asus-nb-wmi: Add wapf4 quirk for the X550CC intel_ips: Make ips_mcp_limits variables static thinkpad_acpi: Mark volume_alsa_control_{vol,mute} as __initdata fujitsu-laptop: Mark fujitsu_dmi_table[] DMI table as __initconst hp-wmi: Add missing __init annotations to initialization code hp_accel: Constify ACPI and DMI tables fujitsu-tablet: Mark DMI callbacks as __init code dell-laptop: Mark dell_quirks[] DMI table as __initconst ...
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux由 Linus Torvalds 提交于
Pull idle update from Len Brown: "Two Intel-platform-specific updates to intel_idle, and a cosmetic tweak to the turbostat utility" * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: tweak whitespace in output format intel_idle: Broadwell support intel_idle: Disable Baytrail Core and Module C6 auto-demotion
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git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux由 Linus Torvalds 提交于
Pull module fix from Rusty Russell: "Nasty potential bug if someone uses a known module param with an invalid value (we don't fail unknown module params any more, just warn)" * tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: module: Clean up ro/nx after early module load failures
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git://git.kernel.org/pub/scm/linux/kernel/git/amit/virtio由 Linus Torvalds 提交于
Pull virtio-rng update from Amit Shah: "Add derating factor for use by hwrng core Sending directly to you with the commit log changes Ted Ts'o pointed out. Not sure if Rusty's back after his travel, but this already has his s-o-b" * 'rng-queue' of git://git.kernel.org/pub/scm/linux/kernel/git/amit/virtio: virtio: rng: add derating factor for use by hwrng core
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git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs由 Linus Torvalds 提交于
Pull btrfs updates from Chris Mason: "These are all fixes I'd like to get out to a broader audience. The biggest of the bunch is Mark's quota fix, which is also in the SUSE kernel, and makes our subvolume quotas dramatically more accurate. I've been running xfstests with these against your current git overnight, but I'm queueing up longer tests as well" * 'for-linus2' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: btrfs: disable strict file flushes for renames and truncates Btrfs: fix csum tree corruption, duplicate and outdated checksums Btrfs: Fix memory corruption by ulist_add_merge() on 32bit arch Btrfs: fix compressed write corruption on enospc btrfs: correctly handle return from ulist_add btrfs: qgroup: account shared subtrees during snapshot delete Btrfs: read lock extent buffer while walking backrefs Btrfs: __btrfs_mod_ref should always use no_quota btrfs: adjust statfs calculations according to raid profiles
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git://git.samba.org/jlayton/linux由 Linus Torvalds 提交于
Pull file locking bugfixes from Jeff Layton: "Most of these patches are to fix a long-standing regression that crept in when the BKL was removed from the file-locking code. The code was converted to use a conventional spinlock, but some fl_release_private ops can block and you can end up sleeping inside the lock. There's also a patch to make /proc/locks show delegations as 'DELEG'" * tag 'locks-v3.17-2' of git://git.samba.org/jlayton/linux: locks: update Locking documentation to clarify fl_release_private behavior locks: move locks_free_lock calls in do_fcntl_add_lease outside spinlock locks: defer freeing locks in locks_delete_lock until after i_lock has been dropped locks: don't reuse file_lock in __posix_lock_file locks: don't call locks_release_private from locks_copy_lock locks: show delegations as "DELEG" in /proc/locks
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git://git.kvack.org/~bcrl/aio-next由 Linus Torvalds 提交于
Pull aio updates from Ben LaHaise. * git://git.kvack.org/~bcrl/aio-next: aio: use iovec array rather than the single one aio: fix some comments aio: use the macro rather than the inline magic number aio: remove the needless registration of ring file's private_data aio: remove no longer needed preempt_disable() aio: kill the misleading rcu read locks in ioctx_add_table() and kill_ioctx() aio: change exit_aio() to load mm->ioctx_table once and avoid rcu_read_lock()
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由 Azael Avalos 提交于
Makefile and Kconfig build support patch for the newly introduced kernel module toshiba_haps. Signed-off-by: NAzael Avalos <coproscefalo@gmail.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Azael Avalos 提交于
This patch provides information about the Toshiba HDD Active Protection Sensor driver module toshiba_haps. Signed-off-by: NAzael Avalos <coproscefalo@gmail.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Azael Avalos 提交于
This driver adds support for the built-in accelereometer found on recent Toshiba laptops with HID TOS620A. This driver receives ACPI notify events 0x80 when the sensor detects a sudden move or a harsh vibration, as well as an ACPI notify event 0x81 whenever the movement or vibration has been stabilized. Also provides sysfs entries to get/set the desired protection level and reseting the HDD protection interface. Signed-off-by: NAzael Avalos <coproscefalo@gmail.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Hans de Goede 提交于
As reported here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173681 the U32U needs wapf=4 too. Signed-off-by: NHans de Goede <hdegoede@redhat.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Mario Limonciello 提交于
Not all HW supporting WMAX method will support the HDMI mux feature. Explicitly quirk the HW that does support it. Signed-off-by: NMario Limonciello <mario_limonciello@dell.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Mathias Krause 提交于
Constify the rfkill_blacklist[] DMI table, the ideapad_rfk_data[] table and the ideapad_attribute_group attribute group. There's no need to have them writeable during runtime. Signed-off-by: NMathias Krause <minipli@googlemail.com> Cc: Ike Panhc <ike.pan@canonical.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Hans de Goede 提交于
The actual x401u does not use the so named x401u quirk but the x55u quirk. All that the x401u quirk does it setting wapf to 4, so rename it to wapf4 to stop the confusion. Signed-off-by: NHans de Goede <hdegoede@redhat.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Roald Frederickx 提交于
Change the name of the hwmon interface from "compal-laptop" to "compal". A dash is an invalid character for a hwmon name and caused the call to hwmon_device_register_with_groups() to fail. Signed-off-by: NRoald Frederickx <roald.frederickx@gmail.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Azael Avalos 提交于
The Toshiba Qosmio X75-A series models also come with the new keymap layout. This patch adds this model to the alt_keymap_dmi list, along with an extra key found on these models. Signed-off-by: NAzael Avalos <coproscefalo@gmail.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Azael Avalos 提交于
Some Toshiba models (most notably Qosmios) come with an incomplete backlight method where the AML code doesn't check for write or read commands and always returns HCI_SUCCESS and the actual brightness (and in some cases the max brightness), thus allowing the backlight interface to be registered without write support. This patch changes the set_lcd_brightness function, checking the returned values for values greater than zero to avoid registering a broken backlight interface. Signed-off-by: NAzael Avalos <coproscefalo@gmail.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Martin Kepplinger 提交于
If this is going away, it won't be in 2012. Signed-off-by: NMartin Kepplinger <martink@posteo.de> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Hans de Goede 提交于
Yoga models don't offer touchpad ctrl through the ideapad interface, causing ideapad_sync_touchpad_state to send wrong touchpad enable/disable events. Signed-off-by: NHans de Goede <hdegoede@redhat.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Hans de Goede 提交于
As reported here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1173681 the X550CC needs wapf=4 too. Signed-off-by: NHans de Goede <hdegoede@redhat.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Mathias Krause 提交于
These variables don't need to be visible outside of this compilation unit, make them static. Signed-off-by: NMathias Krause <minipli@googlemail.com> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Mathias Krause 提交于
Mark volume_alsa_control_vol and volume_alsa_control_mute as __initdata, as snd_ctl_new1() will copy the relevant parts, so there is no need to keep the master copies around after initialization. Signed-off-by: NMathias Krause <minipli@googlemail.com> Cc: Henrique de Moraes Holschuh <ibm-acpi@hmh.eng.br> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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由 Mathias Krause 提交于
The DMI table is only ever used during initialization. Mark it as __initconst so its memory can be released afterwards -- roughly 1.5 kB. In turn, the callback functions can be marked with __init, too. Signed-off-by: NMathias Krause <minipli@googlemail.com> Cc: Jonathan Woithe <jwoithe@just42.net> Signed-off-by: NMatthew Garrett <matthew.garrett@nebula.com>
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