On Thu, Aug 15, 2024 at 05:39:05PM +, Sami Tolvanen wrote:
> --- /dev/null
> +++ b/scripts/gendwarfksyms/dwarf.c
> @@ -0,0 +1,87 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later
Sorry, but I have to ask, do you _REALLY_ mean "or later" here and in
other places in this series? If so, great,
On Thu, Aug 15, 2024 at 05:39:04PM +, Sami Tolvanen wrote:
> Changes in v2:
> - Per Luis' request, dropped Rust-specific patches and added
> gendwarfksyms as an alternative to genksyms for the entire
> kernel.
>
> - Added support for missing DWARF features needed to handle
> also non-Rus
On Thu, Aug 15, 2024 at 05:39:20PM +, Sami Tolvanen wrote:
> Distributions that want to maintain a stable kABI need the ability to
> add reserved fields to kernel data structures that they anticipate
> will be modified during the ABI support timeframe, either by LTS
> updates or backports.
>
>
Hi Mathieu,
On 14-08-2024 21:22, Mathieu Poirier wrote:
Hi Beleswar, On Thu, Aug 08, 2024 at 01: 11: 26PM +0530, Beleswar
Padhi wrote: > Acquire the mailbox handle during device probe and do
not release handle > in stop/detach routine or error paths. This
removes the redundant > requests for
This series parallelizes the mlx5_vdpa device suspend and resume
operations through the firmware async API. The purpose is to reduce live
migration downtime.
The series starts with changing the VQ suspend and resume commands
to the async API. After that, the switch is made to issue multiple
comman
mlx5_vdpa_err() was missing. This patch adds it and uses it in the
necessary places.
Signed-off-by: Dragos Tatulea
Reviewed-by: Tariq Toukan
Acked-by: Eugenio Pérez
---
drivers/vdpa/mlx5/core/mlx5_vdpa.h | 5 +
drivers/vdpa/mlx5/net/mlx5_vnet.c | 24
2 files chan
Currently, commands that qualify as throttled can't be used via the
async API. That's due to the fact that the throttle semaphore can sleep
but the async API can't.
This patch allows throttling in the async API by using the tentative
variant of the semaphore and upon failure (semaphore at 0) retur
Introduce a new function mlx5_vdpa_exec_async_cmds() which
wraps the mlx5_core async firmware command API in a way
that will be used to parallelize certain operation in this
driver.
The wrapper deals with the case when mlx5_cmd_exec_cb() returns
EBUSY due to the command being throttled.
Signed-of
Switch firmware vq query command to be issued via the async API to
allow future parallelization.
For now the command is still serial but the infrastructure is there
to issue commands in parallel, including ratelimiting the number
of issued async commands to firmware.
A later patch will switch to
Switch firmware vq modify command to be issued via the async API to
allow future parallelization. The new refactored function applies the
modify on a range of vqs and waits for their execution to complete.
For now the command is still used in a serial fashion. A later patch
will switch to modifyin
Currently device suspend works on vqs serially. Building up on previous
changes that converted vq operations to the async api, this patch
parallelizes the device suspend:
1) Suspend all active vqs parallel.
2) Query suspended vqs in parallel.
For 1 vDPA device x 32 VQs (16 VQPs) attached to a larg
Currently device resume works on vqs serially. Building up on previous
changes that converted vq operations to the async api, this patch
parallelizes the device resume.
For 1 vDPA device x 32 VQs (16 VQPs) attached to a large VM (256 GB RAM,
32 CPUs x 2 threads per core), the device resume time is
Unregistering notifiers is a costly operation. Instead of removing
the notifiers during device suspend and adding them back at resume,
simply ignore the call when the device is suspended.
At resume time call queue_link_work() to make sure that the device state
is propagated in case there were chan
change_num_qps() has a lot of multiplications by 2 to convert
the number of VQ pairs to number of VQs. This patch simplifies
the code by doing the VQP -> VQ count conversion at the beginning
in a variable.
Signed-off-by: Dragos Tatulea
Reviewed-by: Tariq Toukan
---
drivers/vdpa/mlx5/net/mlx5_vn
change_num_qps() is still suspending/resuming VQs one by one.
This change switches to parallel suspend/resume.
When increasing the number of queues the flow has changed a bit for
simplicity: the setup_vq() function will always be called before
resume_vqs(). If the VQ is initialized, setup_vq() wil
On 02.08.24 15:14, Michael S. Tsirkin wrote:
> On Fri, Aug 02, 2024 at 10:20:17AM +0300, Dragos Tatulea wrote:
>> This series parallelizes the mlx5_vdpa device suspend and resume
>> operations through the firmware async API. The purpose is to reduce live
>> migration downtime.
>>
>> The series s
An important part of a production ready Linux kernel driver is
tracepoints. So to write production ready Linux kernel drivers in Rust,
we must be able to call tracepoints from Rust code. This patch series
adds support for calling tracepoints declared in C from Rust.
To use the tracepoint support,
Add just enough support for static key so that we can use it from
tracepoints. Tracepoints rely on `static_key_false` even though it is
deprecated, so we add the same functionality to Rust.
This patch only provides a generic implementation without code patching
(matching the one used when CONFIG_J
Make it possible to have Rust code call into tracepoints defined by C
code. It is still required that the tracepoint is declared in a C
header, and that this header is included in the input to bindgen.
Instead of calling __DO_TRACE directly, the exported rust_do_trace_
function calls an inline hel
This updates the Rust printing sample to invoke a tracepoint. This
ensures that we have a user in-tree from the get-go even though the
patch is being merged before its real user.
Signed-off-by: Alice Ryhl
---
MAINTAINERS| 1 +
include/trace/events/rust_sample.h | 31
To avoid duplication of inline asm between C and Rust, we need to
import the inline asm from the relevant `jump_label.h` header into Rust.
To make that easier, this patch updates the header files to expose the
inline asm via a new ARCH_STATIC_BRANCH_ASM macro.
The header files are all updated to d
To allow the Rust implementation of static_key_false to use runtime code
patching instead of the generic implementation, pull in the relevant
inline assembly from the jump_label.h header by running the C
preprocessor on a .rs.S file. Build rules are added for .rs.S files.
Since the relevant inline
Hi Steven, Jiri,
On Wed, Aug 07, 2024 at 04:27:34PM GMT, Steven Rostedt wrote:
> Just in case nobody pinged you, the rest of the series is now in Linus's
> tree.
Thanks for the ping!
I have prepared some tweaks to the patch (see below).
Also, I have some doubts. The prototype shows that it has
Hi Linux, please pull from
https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git/
tags/libnvdimm-fixes-6.11-rc4
To get a fix for filesystem DAX.
It has been in -next since August 12th without any reported issues.
Thanks,
Ira Weiny
---
The following changes since commit afdab70
On Thu, Aug 15, 2024 at 10:46:41AM -0600, Mathieu Poirier wrote:
> Hi,
>
> On Fri, Aug 02, 2024 at 10:21:03AM -0500, Andrew Davis wrote:
> > From: Martyn Welch
> >
> > The AM62x and AM64x SoCs of the TI K3 family has a Cortex M4F core in
> > the MCU domain. This core is typically used for safety
On Fri, Aug 16, 2024 at 01:23:59PM +0530, Beleswar Prasad Padhi wrote:
> Hi Mathieu,
>
> On 14-08-2024 21:22, Mathieu Poirier wrote:
> > Hi Beleswar, On Thu, Aug 08, 2024 at 01: 11: 26PM +0530, Beleswar Padhi
> > wrote: > Acquire the mailbox handle during device probe and do not
> > release handle
Hi Greg,
On Fri, Aug 16, 2024 at 12:20 AM Greg Kroah-Hartman
wrote:
>
> On Thu, Aug 15, 2024 at 05:39:20PM +, Sami Tolvanen wrote:
> > Distributions that want to maintain a stable kABI need the ability to
> > add reserved fields to kernel data structures that they anticipate
> > will be modif
On Thu 2024-07-25 13:48:06, Miroslav Benes wrote:
> Hi,
>
> On Fri, 10 Nov 2023, Petr Mladek wrote:
>
> > Recent changes in the livepatch core have allowed to connect states,
> > shadow variables, and callbacks. Use these new features in
> > the state tests.
> >
> > Use the shadow variable API t
On Fri, Aug 16, 2024 at 01:42:26PM +0200, Alejandro Colomar wrote:
> Hi Steven, Jiri,
>
> On Wed, Aug 07, 2024 at 04:27:34PM GMT, Steven Rostedt wrote:
> > Just in case nobody pinged you, the rest of the series is now in Linus's
> > tree.
>
> Thanks for the ping!
>
> I have prepared some tweaks
Ira Weiny wrote:
> Hi Linux, please pull from
^
Linus.
Apologies,
Ira
>
> https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git/
> tags/libnvdimm-fixes-6.11-rc4
>
> To get a fix for filesystem DAX.
>
> It has been in -next since August 12th without any reported is
On Wed, May 29, 2024, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:9b62e02e6336 Merge tag 'mm-hotfixes-stable-2024-05-25-09-1..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=16cb0eec98
> kernel config: https://sy
> On Wed, May 29, 2024, syzbot wrote:
>> Hello,
>>
>> syzbot found the following issue on:
>>
>> HEAD commit:9b62e02e6336 Merge tag 'mm-hotfixes-stable-2024-05-25-09-1..
>> git tree: upstream
>> console output: https://syzkaller.appspot.com/x/log.txt?x=16cb0eec98
>> kernel config:
On Fri, Aug 16, 2024, syzbot wrote:
> > On Wed, May 29, 2024, syzbot wrote:
> >> Hello,
> >>
> >> syzbot found the following issue on:
> >>
> >> HEAD commit:9b62e02e6336 Merge tag
> >> 'mm-hotfixes-stable-2024-05-25-09-1..
> >> git tree: upstream
> >> console output: https://syzkaller.
On Fri, Aug 16, 2024 at 11:10:32AM -0700, Sean Christopherson wrote:
> On Fri, Aug 16, 2024, syzbot wrote:
> > > On Wed, May 29, 2024, syzbot wrote:
> > >> Hello,
> > >>
> > >> syzbot found the following issue on:
> > >>
> > >> HEAD commit:9b62e02e6336 Merge tag
> > >> 'mm-hotfixes-stable-20
On Fri, 16 Aug 2024 at 10:15, Ira Weiny wrote:
>
> Ira Weiny wrote:
> > Hi Linux, please pull from
> ^
> Linus.
>
> Apologies,
Heh. I've been called worse. And it's a fairly common typo with people
whose fingers are used to type "Linux" and do so on auto-pilot.
I have an evil twin
The pull request you sent on Fri, 16 Aug 2024 08:44:39 -0500:
> https://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm.git/
> tags/libnvdimm-fixes-6.11-rc4
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/e4a55b555db6d2a006551605ef4404529e878cd2
Thank you!
--
On Fri, Aug 16, 2024 at 07:03:59PM GMT, Jiri Olsa wrote:
> On Fri, Aug 16, 2024 at 01:42:26PM +0200, Alejandro Colomar wrote:
> > Hi Steven, Jiri,
> >
> > On Wed, Aug 07, 2024 at 04:27:34PM GMT, Steven Rostedt wrote:
> > > Just in case nobody pinged you, the rest of the series is now in Linus's
>
To allow precise tracking of page caches accessed, add new tracepoints
that trigger when a process actually accesses them.
The ureadahead program used by ChromeOS traces the disk access of
programs as they start up at boot up. It uses mincore(2) or the
'mm_filemap_add_to_page_cache' trace event to
Hi Jiri, Steven,
On Fri, Aug 16, 2024 at 08:55:47PM GMT, Alejandro Colomar wrote:
> > hi,
> > there are no args for x86.. it's there just to note that it might
> > be different on other archs, so not sure what man page should say
> > in such case.. keeping (void) is fine with me
>
> Hmmm, then I'
Matthew Maurer writes:
> Adds a new format for MODVERSIONS which stores each field in a separate
> ELF section. This initially adds support for variable length names, but
> could later be used to add additional fields to MODVERSIONS in a
> backwards compatible way if needed. Any new fields will be
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