Re: [PATCH 2/6] selftest/kdbus: enable cross compilation

2015-04-02 Thread Shuah Khan
On 04/01/2015 05:20 PM, Tyler Baker wrote: > Use the CC variable instead of hard coding gcc and include lib.mk. > > Signed-off-by: Tyler Baker Greg, Will you be able to take this patch in with the other kdbus sleftest patches? Acked-by: Shuah Khan thanks, -- Shuah > --- > tools/testing/sel

Re: [PATCH 19/21] clocksource: Improve comment explaining clocks_calc_max_nsecs()'s 50% safety margin

2015-04-02 Thread John Stultz
On Thu, Apr 2, 2015 at 1:50 AM, Peter Zijlstra wrote: > On Wed, Apr 01, 2015 at 08:34:39PM -0700, John Stultz wrote: >> Ingo noted that the description of clocks_calc_max_nsecs()'s >> 50% safety margin was somewhat circular. So this patch tries >> to improve the comment to better explain what we m

Re: smp_call_function_single lockups

2015-04-02 Thread Linus Torvalds
On Wed, Apr 1, 2015 at 2:59 PM, Chris J Arges wrote: > > It is worthwhile to do a 'bisect' to see where on average it takes > longer to reproduce? Perhaps it will point to a relevant change, or it > may be completely useless. It's likely to be an exercise in futility. "git bisect" is realyl bad a

Re: [PATCH 21/21] time: Rework debugging variables so they aren't global

2015-04-02 Thread John Stultz
On Thu, Apr 2, 2015 at 12:51 AM, Ingo Molnar wrote: > > * Peter Zijlstra wrote: > >> On Wed, Apr 01, 2015 at 08:34:41PM -0700, John Stultz wrote: >> > Ingo suggested that the timekeeping debugging variables >> > recently added should not be global, and should be tied >> > to the timekeeper's read

Re: [PATCH v10 04/11] sched: Make sched entity usage tracking scale-invariant

2015-04-02 Thread Peter Zijlstra
On Thu, Apr 02, 2015 at 05:53:09PM +0100, Morten Rasmussen wrote: > Could you enlighten me a bit about how to define the arch specific > implementation without getting into trouble? I'm failing miserably :( Hmm, this was not supposed to be difficult.. :/ > I thought the arm arch-specific topology

Re: restart_syscall: use freezable blocking call

2015-04-02 Thread Tejun Heo
On Thu, Apr 02, 2015 at 07:25:13PM +0200, Peter Zijlstra wrote: > On Thu, Apr 02, 2015 at 12:03:08PM -0400, Sasha Levin wrote: > > It's not correct. > > Yay for lockdep ;-) > > > [0.645644] debug_check_no_locks_held (kernel/locking/lockdep.c:4178) > > Should we also have that call in freezer

[GIT PULL] please pull infiniband.git

2015-04-02 Thread Roland Dreier
Hi Linus, Please pull from git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband.git tags/rdma-for-linus One 4.0 RDMA change: - Fix for exploitable integer overflow in uverbs interface.

Re: smp_call_function_single lockups

2015-04-02 Thread Linus Torvalds
On Thu, Apr 2, 2015 at 2:55 AM, Ingo Molnar wrote: > > So another possibility would be that it's the third change causing > this change in behavior: Oh, yes, that looks much more likely. I overlooked that small change entirely. > ... since with this we won't send IPIs in a semi-nested fashion wi

Re: [PATCH v7 1/9] arm64: dts: exynos: Add dts files for 64-bit Exynos5433 SoC

2015-04-02 Thread Mark Rutland
On Tue, Mar 31, 2015 at 12:56:38AM +0100, Chanwoo Choi wrote: > Hi Mark, > > On 03/31/2015 01:09 AM, Mark Rutland wrote: > > Hi, > > > > On Wed, Mar 18, 2015 at 12:17:28AM +, Chanwoo Choi wrote: > >> This patch adds new Exynos5433 dtsi to support 64-bit Exynos5433 SoC based > >> on > >> Octa

Re: [PATCH] x86/asm/entry/64: better check for canonical address

2015-04-02 Thread Denys Vlasenko
On 03/26/2015 01:42 PM, Denys Vlasenko wrote: > This change makes the check exact (no more false positives > on kernel addresses). > > It isn't really important to be fully correct here - > almost all addresses we'll ever see will be userspace ones, > but OTOH it looks to be cheap enough: > the ne

Re: [GIT PULL] FS-Cache: Fixes for dead objects handling and operation cancellation

2015-04-02 Thread Linus Torvalds
On Thu, Apr 2, 2015 at 6:59 AM, David Howells wrote: > > Could you pull these FS-Cache fixes please? I really think this is out of the merge window, and not at all appropriate. There have been no fscache changes since September of last year, it can't suddenly be so urgent that you need to get th

[PATCH 1/3] context_tracking: Protect against recursion

2015-04-02 Thread Frederic Weisbecker
Context tracking recursion can happen when an exception triggers in the middle of a call to a context tracking probe. This special case can be caused by vmalloc faults. If an access to a memory area allocated by vmalloc happens in the middle of context_tracking_enter(), we may run into an endless

[PATCH 3/3] context_tracking: Tag init code

2015-04-02 Thread Frederic Weisbecker
Mark context_tracking_cpu_set() as init code, we only need it at early boot time. Signed-off-by: Frederic Weisbecker Cc: Thomas Gleixner Cc: Peter Zijlstra Cc: Rik van Riel Cc: Paul E. McKenney Cc: Ingo Molnar Cc: Dave Jones Cc: Oleg Nesterov --- kernel/context_tracking.c | 4 ++-- 1 file

[PATCH 0/3] context_tracking: A few improvements

2015-04-02 Thread Frederic Weisbecker
Hi, A few updates that I plan to push in a few days: _ Fix recursion issues (rare crashes reported) _ Optimize TIF_NOHZ propagation _ Some __init tags git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks.git nohz/core HEAD: bf7d3e11e99120f6c435cc709842e9b82431c003 Than

[PATCH 2/3] context_tracking: Inherit TIF_NOHZ through forks instead of context switches

2015-04-02 Thread Frederic Weisbecker
TIF_NOHZ is used by context_tracking to force syscall slow-path on every task in order to track userspace roundtrips. As such, it must be set on all running tasks. It's currently explicitly inherited through context switches. There is no need to do it on this fast-path though. The flag could be si

Re: [PATCH 3.13.y-ckt 056/143] usb: musb: add omap-control dependency

2015-04-02 Thread Kamal Mostafa
On Wed, 2015-04-01 at 10:37 +0100, Luis Henriques wrote: > On Tue, Mar 31, 2015 at 12:47:01PM -0700, Kamal Mostafa wrote: > > 3.13.11-ckt18 -stable review patch. If anyone has any objections, please > > let me know. > > > > Arnd reported a regression caused by this patch. It seems to be fixed >

[PATCH v3] watchdog: add watchdog_cpumask sysctl to assist nohz

2015-04-02 Thread cmetcalf
From: Chris Metcalf Change the default behavior of watchdog so it only runs on the housekeeping cores when nohz_full is enabled at build and boot time. Allow modifying the set of cores the watchdog is currently running on with a new kernel.watchdog_cpumask sysctl. Signed-off-by: Chris Metcalf

Re: [PATCH 4/4] UBI: Implement bitrot checking

2015-04-02 Thread Andrea Scian
Richard, Il 29/03/2015 14:13, Richard Weinberger ha scritto: > + mutex_lock(&ubi->buf_mutex); > + err = ubi_io_read(ubi, ubi->peb_buf, e->pnum, 0, ubi->peb_size); > + mutex_unlock(&ubi->buf_mutex); > + if (err == UBI_IO_BITFLIPS) { > + dbg_wl("found bitflips in PEB %d"

Re: [PATCH 1/2] kselftests: timers: Make set-timer-lat fail more gracefully for !CAP_WAKE_ALARM

2015-04-02 Thread Shuah Khan
On 04/02/2015 11:17 AM, Tyler Baker wrote: > On 2 April 2015 at 06:43, Shuah Khan wrote: >> On 04/02/2015 04:18 AM, Prarit Bhargava wrote: >>> >>> >>> On 03/26/2015 01:33 PM, Tyler Baker wrote: On 26 March 2015 at 09:29, John Stultz wrote: > On Thu, Mar 26, 2015 at 4:31 AM, Prarit Bharga

[PATCH 1/5] f2fs: fix mismatching lock and unlock pages for roll-forward recovery

2015-04-02 Thread Jaegeuk Kim
Previously, inode page is not correctly locked and unlocked in pair during the roll-forward recovery. Signed-off-by: Jaegeuk Kim --- fs/f2fs/recovery.c | 48 +++- 1 file changed, 31 insertions(+), 17 deletions(-) diff --git a/fs/f2fs/recovery.c b/fs/f

[PATCH 4/5] f2fs: do not increase link count during recovery

2015-04-02 Thread Jaegeuk Kim
If there are multiple fsynced dnodes having a dent flag, roll-forward routine sets FI_INC_LINK for their inode, and recovery_dentry increases its link count accordingly. That results in normal file having a link count as 2, so we can't unlink those files. This was added to handle several inode blo

[PATCH 2/5] f2fs: add F2FS_INLINE_DOTS to recover missing dot dentries

2015-04-02 Thread Jaegeuk Kim
If f2fs was corrupted with missing dot dentries, it needs to recover them after fsck.f2fs detection. The underlying precedure is: 1. The fsck.f2fs remains F2FS_INLINE_DOTS flag in directory inode, if it detects missing dot dentries. 2. When f2fs looks up the corrupted directory, it triggers f2fs

[PATCH 3/5] f2fs: assign parent's i_mode for empty dir

2015-04-02 Thread Jaegeuk Kim
When assigning i_mode for dotdot, it needs to assign parent's i_mode. Signed-off-by: Jaegeuk Kim --- fs/f2fs/dir.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/dir.c b/fs/f2fs/dir.c index b2970fb..60a2a41 100644 --- a/fs/f2fs/dir.c +++ b/fs/f2fs/dir.c @@ -334,7 +33

[PATCH 5/5] f2fs: do not recover wrong data index

2015-04-02 Thread Jaegeuk Kim
During the roll-forward recovery, if we found a new data index written fsync lastly, we need to recover new block address. But, if that address was corrupted, we should not recover that. Otherwise, f2fs gets kernel panic from: In check_index_in_prev_nodes(), sentry = get_seg_entry(sbi, segno

Re: userspace breakage in linux/nfsd/debug.h

2015-04-02 Thread Jeff Layton
On Thu, 2 Apr 2015 11:58:13 -0400 Jeff Layton wrote: > On Thu, 02 Apr 2015 10:42:46 -0400 > Mark Salter wrote: > > > This patch: > > > > commit f895b252d4edf66b2895fb5a7b17a638665f3e1f > > Author: Jeff Layton > > Date: Mon Nov 17 16:58:04 2014 -0500 > > > > sunrpc: eliminate RPC_

Re: [PATCH 4/4] UBI: Implement bitrot checking

2015-04-02 Thread Richard Weinberger
Hi! Am 02.04.2015 um 19:34 schrieb Andrea Scian: > > Richard, > > Il 29/03/2015 14:13, Richard Weinberger ha scritto: >> +mutex_lock(&ubi->buf_mutex); >> +err = ubi_io_read(ubi, ubi->peb_buf, e->pnum, 0, ubi->peb_size); >> +mutex_unlock(&ubi->buf_mutex); >> +if (err == UBI_IO_BIT

Re: [PATCH 2/3] drm:msm: Initial Add Writeback Support

2015-04-02 Thread jilaiw
Thanks Paul. Some comments embedded and for the rest I will update the code accordingly. > A few nits follow. > > On Wed, 2015-04-01 at 17:12 -0400, Jilai Wang wrote: >> --- a/drivers/gpu/drm/msm/Kconfig >> +++ b/drivers/gpu/drm/msm/Kconfig > >> +config DRM_MSM_WB >> +bool "Enable writeback su

Re: [PATCH 1/3] context_tracking: Protect against recursion

2015-04-02 Thread Rik van Riel
On 04/02/2015 01:39 PM, Frederic Weisbecker wrote: > Context tracking recursion can happen when an exception triggers in the > middle of a call to a context tracking probe. > > This special case can be caused by vmalloc faults. If an access to a > memory area allocated by vmalloc happens in the mi

Re: [PATCH 1/2] kselftests: timers: Make set-timer-lat fail more gracefully for !CAP_WAKE_ALARM

2015-04-02 Thread John Stultz
On Thu, Apr 2, 2015 at 3:18 AM, Prarit Bhargava wrote: > On 03/26/2015 01:33 PM, Tyler Baker wrote: >> I realize this may be a good amount of work, so I'd like to help out. >> Perhaps working John to convert his timer tests to use TAP output >> would be a good starting point? > > John, I could pro

Re: [PATCH] selftests/mount: output error messages when mount test fail

2015-04-02 Thread Shuah Khan
On 04/02/2015 12:52 AM, Zhang Zhen wrote: > Without this patch, if /proc/self/uid_map is not exist, > the mount test case will fail and no any prompting. > > After applied this patch, the case will prompt why it fail. > Just as follows: > root@kernel-host:/opt/kernel> make -C tools/testing/selftes

Re: another pmem variant V2

2015-04-02 Thread Ingo Molnar
* Christoph Hellwig wrote: > On Thu, Apr 02, 2015 at 03:11:36PM +, Elliott, Robert (Server Storage) > wrote: > > AttrCopyRead IOPS Write IOPS > > = == > > UC memcpy 36 K

Re: [PATCH] mailbox: add ACPI support for mailbox framework

2015-04-02 Thread Feng Kan
On Thu, Apr 2, 2015 at 2:07 AM, Mika Westerberg wrote: > On Wed, Apr 01, 2015 at 10:01:45AM -0700, Feng Kan wrote: >> On Wed, Apr 1, 2015 at 12:45 AM, Mika Westerberg >> wrote: >> > On Tue, Mar 31, 2015 at 02:18:00PM -0700, Feng Kan wrote: >> >> This will add support for ACPI parsing of the mboxe

Re: [PATCH v3] watchdog: add watchdog_cpumask sysctl to assist nohz

2015-04-02 Thread Peter Zijlstra
On Thu, Apr 02, 2015 at 01:39:28PM -0400, cmetc...@ezchip.com wrote: > @@ -431,6 +434,10 @@ static void watchdog_enable(unsigned int cpu) > hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); > hrtimer->function = watchdog_timer_fn; > > + /* Exit if the cpu is not allowed fo

Re: [PATCH 2/3] drm:msm: Initial Add Writeback Support

2015-04-02 Thread jilaiw
Thanks Emil. Please check the comments embedded and for the rest I will update the code. > Hi Jilai, > > Just a few questions, not really a review as I'm not that familiar > with the code. > > >> +++ b/drivers/gpu/drm/msm/Kconfig >> @@ -27,6 +27,16 @@ config DRM_MSM_FBDEV >> support. Not

Re: [PATCH 3/3] context_tracking: Tag init code

2015-04-02 Thread Rik van Riel
On 04/02/2015 01:39 PM, Frederic Weisbecker wrote: > Mark context_tracking_cpu_set() as init code, we only need it at > early boot time. > > Signed-off-by: Frederic Weisbecker > Cc: Thomas Gleixner > Cc: Peter Zijlstra > Cc: Rik van Riel > Cc: Paul E. McKenney > Cc: Ingo Molnar > Cc: Dave Jo

Re: [PATCH 2/3] context_tracking: Inherit TIF_NOHZ through forks instead of context switches

2015-04-02 Thread Rik van Riel
On 04/02/2015 01:39 PM, Frederic Weisbecker wrote: > TIF_NOHZ is used by context_tracking to force syscall slow-path on every > task in order to track userspace roundtrips. As such, it must be set on > all running tasks. > > It's currently explicitly inherited through context switches. There is >

Re: [PATCHv2 3/6] rds: check for excessive looping in rds_send_xmit

2015-04-02 Thread David Miller
From: Sowmini Varadhan Date: Thu, 2 Apr 2015 10:19:37 -0400 > @@ -177,6 +178,18 @@ int rds_send_xmit(struct rds_connection *conn) > > rm = conn->c_xmit_rm; > > + if (!rm) { > + same_rm = 0; > + } else { > + same_rm

Re: [PATCH v3] net: sysctl for RA default route MTU

2015-04-02 Thread Roman Gushchin
>>  The next question I have is about the behavior of the new setting >>  in the presence of an RA MTU option.  It seems like the sysctl >>  doesn't override that RA MTU option, but rather just clamps it. >> >>  And then if it's in range, this controls only whether the default >>  route has it's MT

Re: [PATCH 2/3] context_tracking: Inherit TIF_NOHZ through forks instead of context switches

2015-04-02 Thread Oleg Nesterov
On 04/02, Frederic Weisbecker wrote: > > +void context_tracking_cpu_set(int cpu) > { > - clear_tsk_thread_flag(prev, TIF_NOHZ); > - set_tsk_thread_flag(next, TIF_NOHZ); > + static bool initialized = false; > + struct task_struct *p, *t; > + unsigned long flags; > + > + if (

Re: [PATCH] x86/asm/entry/64: better check for canonical address

2015-04-02 Thread Ingo Molnar
* Denys Vlasenko wrote: > On 03/26/2015 01:42 PM, Denys Vlasenko wrote: > > This change makes the check exact (no more false positives > > on kernel addresses). > > > > It isn't really important to be fully correct here - > > almost all addresses we'll ever see will be userspace ones, > > but O

Re: [PATCH v6 1/2] DT: hwspinlock: Add binding documentation for Qualcomm hwmutex

2015-04-02 Thread Tim Bird
On Wed, Apr 1, 2015 at 9:40 PM, Ohad Ben-Cohen wrote: > On Thu, Apr 2, 2015 at 12:32 AM, Tim Bird wrote: >> I didn't see an Ack from Mark or Rob. But I did see a question from >> Mark and response from Bjorn. >> >> Ohad - did you take this or are you still waiting for something? >> >> Who should

Re: CVE-2014-8159 kernel: infiniband: uverbs: unprotected physical memory access

2015-04-02 Thread Haggai Eran
On Thursday, April 2, 2015 7:44 PM, Shachar Raindel wrote: >> -Original Message- >> From: Yann Droneaud [mailto:ydrone...@opteya.com] >> Sent: Thursday, April 02, 2015 7:35 PM >> To: Haggai Eran >> Cc: Shachar Raindel; Sagi Grimberg; oss-secur...@lists.openwall.com; >> (linux-r...@vger.ke

Re: [PATCH v3] watchdog: add watchdog_cpumask sysctl to assist nohz

2015-04-02 Thread Chris Metcalf
On 04/02/2015 02:06 PM, Peter Zijlstra wrote: On Thu, Apr 02, 2015 at 01:39:28PM -0400, cmetc...@ezchip.com wrote: @@ -431,6 +434,10 @@ static void watchdog_enable(unsigned int cpu) hrtimer_init(hrtimer, CLOCK_MONOTONIC, HRTIMER_MODE_REL); hrtimer->function = watchdog_timer_fn;

Re: Unreliable hibernation on Lenovo x230 (regression)

2015-04-02 Thread rhn
On Fri, 3 Apr 2015 01:22:21 +0800 joeyli wrote: > On Fri, Apr 03, 2015 at 12:50:54AM +0800, joeyli wrote: > > Hi, > > > > On Thu, Apr 02, 2015 at 05:28:05PM +0200, Pavel Machek wrote: > > > On Wed 2015-04-01 21:47:43, rhn wrote: > > > > Hello, > > > > > > > > Between kernel 3.16 and 3.17, a re

Re: [PATCH 2/3] drm:msm: Initial Add Writeback Support

2015-04-02 Thread Rob Clark
On Thu, Apr 2, 2015 at 2:07 PM, wrote: >>> +config DRM_MSM_WB >>> + bool "Enable writeback support for MSM modesetting driver" >>> + depends on DRM_MSM >>> + depends on VIDEO_V4L2 >>> + select VIDEOBUF2_CORE >>> + default y >>> + help >>> + Choose this

Re: [PATCH] x86, aperture: Check for GART before accessing GART registers

2015-04-02 Thread Ingo Molnar
* Borislav Petkov wrote: > On Thu, Apr 02, 2015 at 12:04:21PM -0500, Aravind Gopalakrishnan wrote: > > >No need - I can amend the local copy I have here. > > Here's what I did: > > --- > From: Aravind Gopalakrishnan > Date: Wed, 1 Apr 2015 09:32:08 -0500 > Subject: [PATCH] x86/gart: Check for

Re: [PATCH 2/3] drm:msm: Initial Add Writeback Support

2015-04-02 Thread Paul Bolle
; > >> + q->io_modes = VB2_DMABUF; > >> + q->drv_priv = dev; > >> + q->buf_struct_size = sizeof(struct msm_wb_v4l2_buffer); > >> + q->ops = &msm_wb_vb2_ops; > >> + q->mem_ops = &msm_wb_vb2_mem_ops; > >> + q-

Re: [GIT PULL] FS-Cache: Fixes for dead objects handling and operation cancellation

2015-04-02 Thread David Howells
Linus Torvalds wrote: > > Could you pull these FS-Cache fixes please? > > I really think this is out of the merge window, and not at all appropriate. > > There have been no fscache changes since September of last year, it > can't suddenly be so urgent that you need to get things into -rc7. We

Re: smp_call_function_single lockups

2015-04-02 Thread Ingo Molnar
* Linus Torvalds wrote: > So unless we find a real clear signature of the bug (I was hoping > that the ISR bit would be that sign), I don't think trying to bisect > it based on how quickly you can reproduce things is worthwhile. So I'm wondering (and I might have missed some earlier report th

Re: [PATCH RESEND] efivarfs: Ensure VariableName is NUL-terminated

2015-04-02 Thread Matthew Garrett
On Thu, 2015-04-02 at 08:39 +0100, Ross Lagerwall wrote: > Some buggy firmware implementations update VariableNameSize on success > such that it does not include the final NUL character which results in > garbage in the efivarfs name entries. Use kzalloc on the efivar_entry > (as is done in efivar

Re: [PATCH] devpts: Add ptmx_uid and ptmx_gid options

2015-04-02 Thread Eric W. Biederman
Andy Lutomirski writes: > On Thu, Apr 2, 2015 at 7:29 AM, Alexander Larsson wrote: >> On Thu, 2015-04-02 at 07:06 -0700, Andy Lutomirski wrote: >>> On Thu, Apr 2, 2015 at 3:12 AM, James Bottomley >>> wrote: >>> > On Tue, 2015-03-31 at 16:17 +0200, Alexander Larsson wrote: >>> >> On tis, 2015-03

Re: [PATCH v3] watchdog: add watchdog_cpumask sysctl to assist nohz

2015-04-02 Thread Peter Zijlstra
On Thu, Apr 02, 2015 at 02:16:09PM -0400, Chris Metcalf wrote: > On 04/02/2015 02:06 PM, Peter Zijlstra wrote: > >On Thu, Apr 02, 2015 at 01:39:28PM -0400, cmetc...@ezchip.com wrote: > >>@@ -431,6 +434,10 @@ static void watchdog_enable(unsigned int cpu) > >>hrtimer_init(hrtimer, CLOCK_MONOTONIC

Re: [GIT PULL] FS-Cache: Fixes for dead objects handling and operation cancellation

2015-04-02 Thread Linus Torvalds
On Thu, Apr 2, 2015 at 11:24 AM, David Howells wrote: > > We weren't looking at -rc7 shortly when I first posted a pull request. Bah. It was already rc5 when the first pull request came, don't try to make it sound like anything but "very late in the rc" game. If there are any *stable* patches in

Re: [PATCH 19/21] clocksource: Improve comment explaining clocks_calc_max_nsecs()'s 50% safety margin

2015-04-02 Thread Peter Zijlstra
On Thu, Apr 02, 2015 at 10:30:18AM -0700, John Stultz wrote: > > Should we make a further note that the tk_fast things rely on this > > slack since they're not strongly serialized against this? That is, they > > can end up using an older cycle_last value and therefore end up with a > > larger delta

[tip:perf/core] perf/x86/intel: Filter branches for PEBS event

2015-04-02 Thread tip-bot for Kan Liang
Commit-ID: 687805e4a60fe83a11556c041840161f8016a367 Gitweb: http://git.kernel.org/tip/687805e4a60fe83a11556c041840161f8016a367 Author: Kan Liang AuthorDate: Fri, 27 Mar 2015 10:38:25 -0400 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:07:42 +0200 perf/x86/intel: Filter branches

[tip:perf/core] perf/x86/intel: Fix Haswell CYCLE_ACTIVITY.* counter constraints

2015-04-02 Thread tip-bot for Andi Kleen
Commit-ID: c420f19b9cdc59662dbb56677417487efc1729ec Gitweb: http://git.kernel.org/tip/c420f19b9cdc59662dbb56677417487efc1729ec Author: Andi Kleen AuthorDate: Mon, 9 Mar 2015 11:20:22 -0700 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:07:43 +0200 perf/x86/intel: Fix Haswell CYC

[tip:perf/core] perf: Add data_{offset,size} to user_page

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: e8c6deac69629c0cb97c3d3272f8631ef17f8f0f Gitweb: http://git.kernel.org/tip/e8c6deac69629c0cb97c3d3272f8631ef17f8f0f Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:10 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:13:32 +0200 perf: Add data_{offset

[tip:perf/core] perf: Add AUX area to ring buffer for raw data streams

2015-04-02 Thread tip-bot for Peter Zijlstra
Commit-ID: 45bfb2e50471abbbfd83d40d28c986078b0d24ff Gitweb: http://git.kernel.org/tip/45bfb2e50471abbbfd83d40d28c986078b0d24ff Author: Peter Zijlstra AuthorDate: Wed, 14 Jan 2015 14:18:11 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:13:46 +0200 perf: Add AUX area to ring

[tip:perf/core] perf: Add a capability for AUX_NO_SG pmus to do software double buffering

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 6a279230391b63130070e0219b0ad09d34d28c89 Gitweb: http://git.kernel.org/tip/6a279230391b63130070e0219b0ad09d34d28c89 Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:13 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:10 +0200 perf: Add a capability

[tip:perf/core] perf: Add a pmu capability for "exclusive" events

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: bed5b25ad9c8a2f5d735ef0bc746ec870c01c1b0 Gitweb: http://git.kernel.org/tip/bed5b25ad9c8a2f5d735ef0bc746ec870c01c1b0 Author: Alexander Shishkin AuthorDate: Fri, 30 Jan 2015 12:31:06 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:12 +0200 perf: Add a pmu capabi

[tip:perf/core] perf/x86/intel: Add cross-HT counter exclusion infrastructure

2015-04-02 Thread tip-bot for Maria Dimakopoulou
Commit-ID: 6f6539cad926f55d5eb6e79d05bbe99f0d54d56d Gitweb: http://git.kernel.org/tip/6f6539cad926f55d5eb6e79d05bbe99f0d54d56d Author: Maria Dimakopoulou AuthorDate: Mon, 17 Nov 2014 20:06:57 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:11 +0200 perf/x86/intel: Add cr

[tip:perf/core] perf/x86/intel: Enforce HT bug workaround with PEBS for SNB/IVB/HSW

2015-04-02 Thread tip-bot for Maria Dimakopoulou
Commit-ID: b63b4b459a78a9a45ea47a4803b8d1868e9d17d5 Gitweb: http://git.kernel.org/tip/b63b4b459a78a9a45ea47a4803b8d1868e9d17d5 Author: Maria Dimakopoulou AuthorDate: Mon, 17 Nov 2014 20:07:00 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:13 +0200 perf/x86/intel: Enforc

[tip:perf/core] perf/x86/intel: Implement cross-HT corruption bug workaround

2015-04-02 Thread tip-bot for Maria Dimakopoulou
Commit-ID: e979121b1b1556e184492e6fc149bbe188fc83e6 Gitweb: http://git.kernel.org/tip/e979121b1b1556e184492e6fc149bbe188fc83e6 Author: Maria Dimakopoulou AuthorDate: Mon, 17 Nov 2014 20:06:58 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:12 +0200 perf/x86/intel: Implem

[tip:perf/core] perf/x86: Add 'index' param to get_event_constraint() callback

2015-04-02 Thread tip-bot for Stephane Eranian
Commit-ID: 79cba822443a168c8f7f5b853d9c7225a6d5415e Gitweb: http://git.kernel.org/tip/79cba822443a168c8f7f5b853d9c7225a6d5415e Author: Stephane Eranian AuthorDate: Mon, 17 Nov 2014 20:06:56 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:10 +0200 perf/x86: Add 'index' pa

[tip:perf/core] perf/x86/intel/bts: Add BTS PMU driver

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 8062382c8dbe2dc11d37e7f0b139508cf10de9d4 Gitweb: http://git.kernel.org/tip/8062382c8dbe2dc11d37e7f0b139508cf10de9d4 Author: Alexander Shishkin AuthorDate: Fri, 30 Jan 2015 12:40:35 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:21 +0200 perf/x86/intel/bts: Ad

[tip:perf/core] perf/x86/intel/pt: Add Intel PT PMU driver

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 52ca9ced3f70779589e6ecc329baffe69d8f5f7a Gitweb: http://git.kernel.org/tip/52ca9ced3f70779589e6ecc329baffe69d8f5f7a Author: Alexander Shishkin AuthorDate: Fri, 30 Jan 2015 12:39:52 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:20 +0200 perf/x86/intel/pt: Add

Re: [PATCH v5 3/4] clk: Provide always-on clock support

2015-04-02 Thread Geert Uytterhoeven
On Wed, Apr 1, 2015 at 2:28 PM, Lee Jones wrote: > --- a/drivers/clk/clk-conf.c > +++ b/drivers/clk/clk-conf.c > @@ -116,6 +116,43 @@ static int __set_clk_rates(struct device_node *node, > bool clk_supplier) > return 0; > } > > +static int __set_clk_always_on(struct device_node *node, bo

[tip:perf/core] perf/x86/intel: Limit to half counters when the HT workaround is enabled, to avoid exclusive mode starvation

2015-04-02 Thread tip-bot for Stephane Eranian
Commit-ID: c02cdbf60b51b8d98a49185535f5d527a2965142 Gitweb: http://git.kernel.org/tip/c02cdbf60b51b8d98a49185535f5d527a2965142 Author: Stephane Eranian AuthorDate: Mon, 17 Nov 2014 20:07:02 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:14 +0200 perf/x86/intel: Limit to

Re: [PATCH 19/21] clocksource: Improve comment explaining clocks_calc_max_nsecs()'s 50% safety margin

2015-04-02 Thread Peter Zijlstra
On Thu, Apr 02, 2015 at 11:41:15AM -0700, John Stultz wrote: > On Thu, Apr 2, 2015 at 11:34 AM, Peter Zijlstra wrote: > > On Thu, Apr 02, 2015 at 10:30:18AM -0700, John Stultz wrote: > >> > Should we make a further note that the tk_fast things rely on this > >> > slack since they're not strongly s

Re: [PATCH 2/3] drm:msm: Initial Add Writeback Support

2015-04-02 Thread Rob Clark
ight = 480; >> >> + >> >> + /* initialize queue */ >> >> + q = &dev->vb_vidq; >> >> + q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; >> >> + q->io_modes = VB2_DMABUF; >> >> + q->drv_priv = dev; >> >

[tip:perf/core] perf/x86/intel: Enforce HT bug workaround for SNB /IVB/HSW

2015-04-02 Thread tip-bot for Maria Dimakopoulou
Commit-ID: 93fcf72cc0fa286aa8c3e11a1a8fd4659f0e27c0 Gitweb: http://git.kernel.org/tip/93fcf72cc0fa286aa8c3e11a1a8fd4659f0e27c0 Author: Maria Dimakopoulou AuthorDate: Mon, 17 Nov 2014 20:06:59 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:12 +0200 perf/x86/intel: Enforc

[tip:perf/core] perf/x86: Rename x86_pmu::er_flags to 'flags'

2015-04-02 Thread tip-bot for Stephane Eranian
Commit-ID: 9a5e3fb52ae5458c8bf1a67129b96c39b541a582 Gitweb: http://git.kernel.org/tip/9a5e3fb52ae5458c8bf1a67129b96c39b541a582 Author: Stephane Eranian AuthorDate: Mon, 17 Nov 2014 20:06:53 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:08 +0200 perf/x86: Rename x86_pmu

[tip:perf/core] perf: Support high-order allocations for AUX space

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 0a4e38e64f5e91ce131cc42ee5bb3925377ec840 Gitweb: http://git.kernel.org/tip/0a4e38e64f5e91ce131cc42ee5bb3925377ec840 Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:12 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:08 +0200 perf: Support high-ord

Re: [PATCH v3] watchdog: add watchdog_cpumask sysctl to assist nohz

2015-04-02 Thread Don Zickus
On Thu, Apr 02, 2015 at 01:39:28PM -0400, cmetc...@ezchip.com wrote: > From: Chris Metcalf > > Change the default behavior of watchdog so it only runs on the > housekeeping cores when nohz_full is enabled at build and boot time. > > Allow modifying the set of cores the watchdog is currently runn

[tip:perf/core] watchdog: Add watchdog enable/ disable all functions

2015-04-02 Thread tip-bot for Stephane Eranian
Commit-ID: b3738d29323344da3017a91010530cf3a58590fc Gitweb: http://git.kernel.org/tip/b3738d29323344da3017a91010530cf3a58590fc Author: Stephane Eranian AuthorDate: Mon, 17 Nov 2014 20:07:03 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:15 +0200 watchdog: Add watchdog e

[tip:perf/core] perf/x86: Only dump PEBS register when PEBS has been detected

2015-04-02 Thread tip-bot for Andi Kleen
Commit-ID: 15fde1101a1aed11958e0d86bc360f01866a74b1 Gitweb: http://git.kernel.org/tip/15fde1101a1aed11958e0d86bc360f01866a74b1 Author: Andi Kleen AuthorDate: Fri, 27 Feb 2015 09:48:32 -0800 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:17 +0200 perf/x86: Only dump PEBS regis

[tip:perf/core] perf/x86/intel: Avoid rewriting DEBUGCTL with the same value for LBRs

2015-04-02 Thread tip-bot for Andi Kleen
Commit-ID: cd1f11de69226cc7ce7e7f22bdab9010103ddaa6 Gitweb: http://git.kernel.org/tip/cd1f11de69226cc7ce7e7f22bdab9010103ddaa6 Author: Andi Kleen AuthorDate: Fri, 20 Mar 2015 10:11:24 -0700 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:20 +0200 perf/x86/intel: Avoid rewritin

[tip:perf/core] perf/x86/intel: Streamline LBR MSR handling in PMI

2015-04-02 Thread tip-bot for Andi Kleen
Commit-ID: 1a78d93750bb5f61abdc59a91fc3bd06a214542a Gitweb: http://git.kernel.org/tip/1a78d93750bb5f61abdc59a91fc3bd06a214542a Author: Andi Kleen AuthorDate: Fri, 20 Mar 2015 10:11:23 -0700 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:19 +0200 perf/x86/intel: Streamline LBR

[tip:perf/core] perf/x86: Dump DEBUGCTL in PMU dump

2015-04-02 Thread tip-bot for Andi Kleen
Commit-ID: da3e606d885a17525eb18afd423f5c438860b833 Gitweb: http://git.kernel.org/tip/da3e606d885a17525eb18afd423f5c438860b833 Author: Andi Kleen AuthorDate: Fri, 27 Feb 2015 09:48:31 -0800 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:17 +0200 perf/x86: Dump DEBUGCTL in PMU

[tip:perf/core] perf/x86/intel: Reset more state in PMU reset

2015-04-02 Thread tip-bot for Andi Kleen
Commit-ID: 8882edf735738c949aba4b65d3ec3453066bab12 Gitweb: http://git.kernel.org/tip/8882edf735738c949aba4b65d3ec3453066bab12 Author: Andi Kleen AuthorDate: Fri, 27 Feb 2015 09:48:30 -0800 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:16 +0200 perf/x86/intel: Reset more sta

Re: [PATCH v5 4/4] clk: dt: Introduce binding for always-on clock support

2015-04-02 Thread Geert Uytterhoeven
On Wed, Apr 1, 2015 at 2:28 PM, Lee Jones wrote: > Signed-off-by: Lee Jones > --- > .../devicetree/bindings/clock/clock-bindings.txt | 31 > ++ > 1 file changed, 31 insertions(+) > > diff --git a/Documentation/devicetree/bindings/clock/clock-bindings.txt > b/Documentation

[tip:perf/core] perf/x86/intel: Make the HT bug workaround conditional on HT enabled

2015-04-02 Thread tip-bot for Stephane Eranian
Commit-ID: b37609c30e41264c4df4acff78abfc894499a49b Gitweb: http://git.kernel.org/tip/b37609c30e41264c4df4acff78abfc894499a49b Author: Stephane Eranian AuthorDate: Mon, 17 Nov 2014 20:07:04 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:15 +0200 perf/x86/intel: Make the

Re: [PATCH 1/2] ASoC: cygnus-audio: adding device tree bindings

2015-04-02 Thread Lori Hikichi
On 15-03-30 10:58 PM, Mark Brown wrote: On Mon, Mar 30, 2015 at 08:16:23PM -0700, Scott Branden wrote: +SSP Subnode properties: +- dai-name: The name of the DAI registered with ASOC ASoC. Okay. Why is this in the DT - it sounds like this is just an internal implementation detail for Lin

[tip:perf/core] perf: Add AUX record

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 68db7e98c3a6ebe7284b6cf14906ed7c55f3f7f0 Gitweb: http://git.kernel.org/tip/68db7e98c3a6ebe7284b6cf14906ed7c55f3f7f0 Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:15 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:12 +0200 perf: Add AUX record

[tip:perf/core] perf: Add ITRACE_START record to indicate that tracing has started

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: ec0d7729bbaed4b9d2d3fada693278e13a3d1368 Gitweb: http://git.kernel.org/tip/ec0d7729bbaed4b9d2d3fada693278e13a3d1368 Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:23 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:17 +0200 perf: Add ITRACE_START

[tip:perf/core] perf: Add API for PMUs to write to the AUX area

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: fdc2670666f40ab3e03143f04d1ebf4a05e2c24a Gitweb: http://git.kernel.org/tip/fdc2670666f40ab3e03143f04d1ebf4a05e2c24a Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:16 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:13 +0200 perf: Add API for PMUs

Re: [PULL] NBD patches for 4.1

2015-04-02 Thread Jens Axboe
On 04/02/2015 02:11 AM, Markus Pargmann wrote: Hi Jens, This pull request contains some NBD cleanups. The documentation was updated to be extensible for future features and the module parameters were added. NBD had an internal header located at include/linux/nbd.h which was only used by nbd.c.

Re: [PATCH 19/21] clocksource: Improve comment explaining clocks_calc_max_nsecs()'s 50% safety margin

2015-04-02 Thread John Stultz
On Thu, Apr 2, 2015 at 11:34 AM, Peter Zijlstra wrote: > On Thu, Apr 02, 2015 at 10:30:18AM -0700, John Stultz wrote: >> > Should we make a further note that the tk_fast things rely on this >> > slack since they're not strongly serialized against this? That is, they >> > can end up using an older

[tip:perf/core] x86: Add Intel Processor Trace (INTEL_PT) cpu feature detection

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: ed69628b3b04578179334393d7f5fe60a2681f1c Gitweb: http://git.kernel.org/tip/ed69628b3b04578179334393d7f5fe60a2681f1c Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:19 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:18 +0200 x86: Add Intel Process

[tip:perf/core] perf: Add wakeup watermark control to the AUX area

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 1a5941312414c71dece6717da9a0fa1303127afa Gitweb: http://git.kernel.org/tip/1a5941312414c71dece6717da9a0fa1303127afa Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:18 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:16 +0200 perf: Add wakeup water

[tip:perf/core] perf/x86: Mark Intel PT and LBR/ BTS as mutually exclusive

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 4807034248bed58d49a4f9f450c024e3b0f58577 Gitweb: http://git.kernel.org/tip/4807034248bed58d49a4f9f450c024e3b0f58577 Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:20 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:19 +0200 perf/x86: Mark Intel P

[tip:perf/core] perf: Support overwrite mode for the AUX area

2015-04-02 Thread tip-bot for Alexander Shishkin
Commit-ID: 2023a0d2829e521fe6ad6b9907f3f90bfbf57142 Gitweb: http://git.kernel.org/tip/2023a0d2829e521fe6ad6b9907f3f90bfbf57142 Author: Alexander Shishkin AuthorDate: Wed, 14 Jan 2015 14:18:17 +0200 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:14:15 +0200 perf: Support overwrit

[tip:sched/core] sched/deadline: Always enqueue on previous rq when dl_task_timer() fires

2015-04-02 Thread tip-bot for Juri Lelli
Commit-ID: 4cd57f97135840f637431c92380c8da3edbe44ed Gitweb: http://git.kernel.org/tip/4cd57f97135840f637431c92380c8da3edbe44ed Author: Juri Lelli AuthorDate: Tue, 31 Mar 2015 09:53:36 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:42:56 +0200 sched/deadline: Always enqueue

Re: [PATCH 2/2] ASoC: add core audio driver for Broadcom Cygnus SOC.

2015-04-02 Thread Lori Hikichi
On 15-03-30 11:42 PM, Mark Brown wrote: On Mon, Mar 30, 2015 at 08:16:24PM -0700, Scott Branden wrote: The CC list for this patch is pretty wide - please look at who you're sending this to and try to send to only relevant people (for example I'm not sure the Raspberry Pi people need to review

[tip:sched/core] sched/core: Check for available DL bandwidth in cpuset_cpu_inactive()

2015-04-02 Thread tip-bot for Juri Lelli
Commit-ID: 3c18d447b3b36a8d3c90dc37dfbd363cdb685d0a Gitweb: http://git.kernel.org/tip/3c18d447b3b36a8d3c90dc37dfbd363cdb685d0a Author: Juri Lelli AuthorDate: Tue, 31 Mar 2015 09:53:37 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:42:56 +0200 sched/core: Check for availabl

[tip:perf/core] perf/x86: Vectorize cpuc->kfree_on_online

2015-04-02 Thread tip-bot for Stephane Eranian
Commit-ID: 90413464313e00fe4975f4a0ebf25fe31d01f793 Gitweb: http://git.kernel.org/tip/90413464313e00fe4975f4a0ebf25fe31d01f793 Author: Stephane Eranian AuthorDate: Mon, 17 Nov 2014 20:06:54 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:08 +0200 perf/x86: Vectorize cpuc

[tip:perf/core] perf/x86/intel: Fix intel_get_event_constraints() for dynamic constraints

2015-04-02 Thread tip-bot for Stephane Eranian
Commit-ID: a90738c2cb0dceb882e0d7f7f9141e0062809b4d Gitweb: http://git.kernel.org/tip/a90738c2cb0dceb882e0d7f7f9141e0062809b4d Author: Stephane Eranian AuthorDate: Mon, 17 Nov 2014 20:07:01 +0100 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:33:14 +0200 perf/x86/intel: Fix inte

Re: smp_call_function_single lockups

2015-04-02 Thread Chris J Arges
On 04/02/2015 01:26 PM, Ingo Molnar wrote: > > * Linus Torvalds wrote: > >> So unless we find a real clear signature of the bug (I was hoping >> that the ISR bit would be that sign), I don't think trying to bisect >> it based on how quickly you can reproduce things is worthwhile. > > So I'm w

[tip:timers/core] timer: Further simplify the SMP and HOTPLUG logic

2015-04-02 Thread tip-bot for Peter Zijlstra
Commit-ID: 3650b57fdf208bc0e36cbe7b5e0744bd0e0cf34d Gitweb: http://git.kernel.org/tip/3650b57fdf208bc0e36cbe7b5e0744bd0e0cf34d Author: Peter Zijlstra AuthorDate: Tue, 31 Mar 2015 20:49:02 +0530 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:46:21 +0200 timer: Further simplify th

[tip:timers/core] timer: Allocate per-cpu tvec_base's statically

2015-04-02 Thread tip-bot for Peter Zijlstra
Commit-ID: b337a9380f7effd60d082569dd7e0b97a7549730 Gitweb: http://git.kernel.org/tip/b337a9380f7effd60d082569dd7e0b97a7549730 Author: Peter Zijlstra AuthorDate: Tue, 31 Mar 2015 20:49:00 +0530 Committer: Ingo Molnar CommitDate: Thu, 2 Apr 2015 17:46:00 +0200 timer: Allocate per-cpu tv

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