On Wed, 2024-02-07 at 09:26 -0800, Xin Li wrote:
> This patch set enables the Intel flexible return and event delivery
> (FRED) architecture with KVM VMX to allow guests to utilize FRED.
>
We tested this FRED KVM patch set on a 7th Intel(R) Core(TM) CPU and the Intel
Simics® Simulator with the fo
On Tue, Mar 26, 2024 at 3:51 PM Mina Almasry wrote:
>
> Abstrace the memory type from the page_pool so we can later add support
> for new memory types. Convert the page_pool to use the new netmem type
> abstraction, rather than use struct page directly.
>
> As of this patch the netmem type is a no
On Tue, Mar 26, 2024 at 3:51 PM Mina Almasry wrote:
>
> Convert netmem to be a union of struct page and struct netmem. Overload
> the LSB of struct netmem* to indicate that it's a net_iov, otherwise
> it's a page.
>
> Currently these entries in struct page are rented by the page_pool and
> used ex
On 3/26/24 8:03 PM, Jason Gunthorpe wrote:
> On Tue, Mar 26, 2024 at 06:09:34PM +0500, Muhammad Usama Anjum wrote:
>> Even after applying this config patch and following snippet (which doesn't
>> terminate the program if mmap doesn't allocate exactly as the hint), I'm
>> finding failed tests.
>>
>>
On 25/03/2024 13:52, Jason Gunthorpe wrote:
> On Mon, Mar 25, 2024 at 12:17:28PM +, Joao Martins wrote:
>>> However, I am not smart enough to figure out why ...
>>>
>>> Apparently, from the source, mmap() fails to allocate pages on the desired
>>> address:
>>>
>>> 1746 assert((uintpt
There is a spelling mistake in an error message. Fix it.
Signed-off-by: Colin Ian King
---
tools/testing/selftests/perf_events/watermark_signal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/perf_events/watermark_signal.c
b/tools/testing/selftests/
Skip instead of failing when prerequisite conditions aren't fulfilled,
such as invalid xstate values etc. This patch would make the tests show
as skip when run by:
make -C tools/testing/selftests/ TARGETS=x86 run_tests
...
# timeout set to 45
# selftests: x86: amx_64
# # xstate cpuid: in
Hi Shuah,
Thanks for reviewing.
On 3/27/24 2:05 AM, Shuah Khan wrote:
> On 3/4/24 23:08, Muhammad Usama Anjum wrote:
>> Conform the layout, informational and status messages to TAP. No
>> functional change is intended other than the layout of output messages.
>>
>> Reviewed-by: T.J. Mercier
>> S
On Wed, Mar 27, 2024 at 05:42:54AM +, Manali Shukla wrote:
...
> diff --git a/tools/testing/selftests/kvm/include/kvm_util_base.h
> b/tools/testing/selftests/kvm/include/kvm_util_base.h
> index 4a40b332115d..00e37c376cf3 100644
> --- a/tools/testing/selftests/kvm/include/kvm_util_base.h
> +++
Hello:
This patch was applied to netdev/net.git (main)
by David S. Miller :
On Mon, 25 Mar 2024 08:56:11 -0700 you wrote:
> The longest running netdevsim test, nexthop.sh, currently takes
> 5 min to finish. Around 260s to be exact, and 310s on a debug kernel.
> The default timeout in selftest is
On Wed, Mar 27, 2024 at 7:06 AM Colin Ian King wrote:
>
> There is a spelling mistake in an error message. Fix it.
>
> Signed-off-by: Colin Ian King
> ---
> tools/testing/selftests/perf_events/watermark_signal.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/tools/testi
On Wed, Mar 27, 2024 at 10:41:52AM +, Joao Martins wrote:
> On 25/03/2024 13:52, Jason Gunthorpe wrote:
> > On Mon, Mar 25, 2024 at 12:17:28PM +, Joao Martins wrote:
> >>> However, I am not smart enough to figure out why ...
> >>>
> >>> Apparently, from the source, mmap() fails to allocate
On Wed, Mar 27, 2024 at 03:14:25PM +0500, Muhammad Usama Anjum wrote:
> On 3/26/24 8:03 PM, Jason Gunthorpe wrote:
> > On Tue, Mar 26, 2024 at 06:09:34PM +0500, Muhammad Usama Anjum wrote:
> >> Even after applying this config patch and following snippet (which doesn't
> >> terminate the program if
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Improve the TAP messages as well.
Reviewed-by: T.J. Mercier
Signed-off-by: Muhammad Usama Anjum
---
Changes since v5:
- Make the TAP messages more by adding mo
On 3/27/24 1:00 AM, Shuah Khan wrote:
> On 3/14/24 04:32, Muhammad Usama Anjum wrote:
>> Conform the layout, informational and status messages to TAP. No
>> functional change is intended other than the layout of output messages.
>> Without using TAP messages, the passed/failed/skip test names canno
On Mon, Mar 25, 2024 at 10:52:46AM -0700, Guenter Roeck wrote:
> Add name of functions triggering warning backtraces to the __bug_table
> object section to enable support for suppressing WARNING backtraces.
>
> To limit image size impact, the pointer to the function name is only added
> to the __b
On 27/03/2024 11:49, Jason Gunthorpe wrote:
> On Wed, Mar 27, 2024 at 03:14:25PM +0500, Muhammad Usama Anjum wrote:
>> On 3/26/24 8:03 PM, Jason Gunthorpe wrote:
>>> On Tue, Mar 26, 2024 at 06:09:34PM +0500, Muhammad Usama Anjum wrote:
Even after applying this config patch and following snippe
On 27/03/2024 11:40, Jason Gunthorpe wrote:
> On Wed, Mar 27, 2024 at 10:41:52AM +, Joao Martins wrote:
>> On 25/03/2024 13:52, Jason Gunthorpe wrote:
>>> On Mon, Mar 25, 2024 at 12:17:28PM +, Joao Martins wrote:
> However, I am not smart enough to figure out why ...
>
> Apparen
On 3/27/24 07:44, Simon Horman wrote:
On Mon, Mar 25, 2024 at 10:52:46AM -0700, Guenter Roeck wrote:
Add name of functions triggering warning backtraces to the __bug_table
object section to enable support for suppressing WARNING backtraces.
To limit image size impact, the pointer to the functio
Paolo Abeni wrote:
> On Tue, 2024-03-26 at 18:25 +0100, Richard Gobert wrote:
>> Paolo Abeni wrote:
>>> Hi,
>>>
>>> On Tue, 2024-03-26 at 16:02 +0100, Richard Gobert wrote:
This patch is meaningful by itself - removing checks against non-relevant
packets and making the flush/flush_id chec
On 3/27/24 06:16, Muhammad Usama Anjum wrote:
On 3/27/24 1:00 AM, Shuah Khan wrote:
On 3/14/24 04:32, Muhammad Usama Anjum wrote:
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Without using TAP messages,
On 3/26/24 15:20, Chang S. Bae wrote:
On 3/26/2024 1:51 PM, Shuah Khan wrote:
show that there are bo backwards compatibility issues
In older kernels lacking AMX support [1], arch_prctl() returns EINVAL. With AMX
support, the kernel will properly set 'features'.
It is also worth noting that t
On 3/26/24 16:40, Kees Cook wrote:
On Tue, Mar 26, 2024 at 02:46:02PM -0600, Shuah Khan wrote:
On 3/14/24 02:54, Muhammad Usama Anjum wrote:
On 3/13/24 11:56 PM, Kees Cook wrote:
Children processes were reporting their status, duplicating the
parent's. Remove that, and add some additional deta
On Wed, Mar 27, 2024 at 03:04:09PM +, Joao Martins wrote:
> On 27/03/2024 11:40, Jason Gunthorpe wrote:
> > On Wed, Mar 27, 2024 at 10:41:52AM +, Joao Martins wrote:
> >> On 25/03/2024 13:52, Jason Gunthorpe wrote:
> >>> On Mon, Mar 25, 2024 at 12:17:28PM +, Joao Martins wrote:
> >
On Mon, Mar 25, 2024 at 1:50 AM Alexei Starovoitov
wrote:
>
> On Fri, Mar 22, 2024 at 7:56 AM Benjamin Tissoires wrote:
> >
> > They are implemented as a workqueue, which means that there are no
> > guarantees of timing nor ordering.
> >
> > Signed-off-by: Benjamin Tissoires
> >
> > ---
> >
> >
On 27/03/2024 17:49, Muhammad Usama Anjum wrote:
> On 3/27/24 7:59 PM, Joao Martins wrote:
>> On 27/03/2024 11:49, Jason Gunthorpe wrote:
>>> On Wed, Mar 27, 2024 at 03:14:25PM +0500, Muhammad Usama Anjum wrote:
On 3/26/24 8:03 PM, Jason Gunthorpe wrote:
> On Tue, Mar 26, 2024 at 06:09:34P
On 3/27/24 11:09 PM, Joao Martins wrote:
> On 27/03/2024 17:49, Muhammad Usama Anjum wrote:
>> On 3/27/24 7:59 PM, Joao Martins wrote:
>>> On 27/03/2024 11:49, Jason Gunthorpe wrote:
On Wed, Mar 27, 2024 at 03:14:25PM +0500, Muhammad Usama Anjum wrote:
> On 3/26/24 8:03 PM, Jason Gunthorpe
On Wed, Mar 27, 2024 at 06:09:37PM +, Joao Martins wrote:
> On 27/03/2024 17:49, Muhammad Usama Anjum wrote:
> > On 3/27/24 7:59 PM, Joao Martins wrote:
> >> On 27/03/2024 11:49, Jason Gunthorpe wrote:
> >>> On Wed, Mar 27, 2024 at 03:14:25PM +0500, Muhammad Usama Anjum wrote:
> On 3/26/24
On 27/03/2024 18:17, Muhammad Usama Anjum wrote:
> On 3/27/24 11:09 PM, Joao Martins wrote:
>> On 27/03/2024 17:49, Muhammad Usama Anjum wrote:
>>> On 3/27/24 7:59 PM, Joao Martins wrote:
On 27/03/2024 11:49, Jason Gunthorpe wrote:
> On Wed, Mar 27, 2024 at 03:14:25PM +0500, Muhammad Usama
On 27/03/2024 18:20, Jason Gunthorpe wrote:
> On Wed, Mar 27, 2024 at 06:09:37PM +, Joao Martins wrote:
>> On 27/03/2024 17:49, Muhammad Usama Anjum wrote:
>>> On 3/27/24 7:59 PM, Joao Martins wrote:
On 27/03/2024 11:49, Jason Gunthorpe wrote:
> On Wed, Mar 27, 2024 at 03:14:25PM +0500
There are multiple #ifdef blocks inside functions where they return just
0 if #ifdef is false. This makes number of tests counting difficult.
Move those functions inside one #ifdef block and move all of them
together. This is preparatory patch for next patch to convert this into
TAP format. So in t
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Add more logic code to skip the tests if particular configuration isn't
available to make sure that either we skip each test or mark it pass/fail.
Signed-off-by:
Conform the layout, informational and status messages to TAP. No
functional change is intended other than the layout of output messages.
Signed-off-by: Muhammad Usama Anjum
---
.../testing/selftests/x86/test_mremap_vdso.c | 43 +--
1 file changed, 21 insertions(+), 22 deletions(
On Wed, Mar 27, 2024 at 08:10:51AM -0700, Guenter Roeck wrote:
> On 3/27/24 07:44, Simon Horman wrote:
> > On Mon, Mar 25, 2024 at 10:52:46AM -0700, Guenter Roeck wrote:
> > > Add name of functions triggering warning backtraces to the __bug_table
> > > object section to enable support for suppressi
On 3/27/24 11:41, Joao Martins wrote:
On 25/03/2024 13:52, Jason Gunthorpe wrote:
On Mon, Mar 25, 2024 at 12:17:28PM +, Joao Martins wrote:
However, I am not smart enough to figure out why ...
Apparently, from the source, mmap() fails to allocate pages on the desired
address:
1746
On 3/27/24 11:20 PM, Jason Gunthorpe wrote:
> On Wed, Mar 27, 2024 at 06:09:37PM +, Joao Martins wrote:
>> On 27/03/2024 17:49, Muhammad Usama Anjum wrote:
>>> On 3/27/24 7:59 PM, Joao Martins wrote:
On 27/03/2024 11:49, Jason Gunthorpe wrote:
> On Wed, Mar 27, 2024 at 03:14:25PM +0500
This patch series provides workingset reporting of user pages in
lruvecs, of which coldness can be tracked by accessed bits and fd
references. However, the concept of workingset applies generically to
all types of memory, which could be kernel slab caches, discardable
userspace caches (databases),
When non-leaf pmd accessed bits are available, MGLRU page table walks
can clear the accessed bit and promptly ignore the accessed bit on the
pte because it's on a different node, so the walk does not update the
generation of said page. When the next scan comes around on the right
node, the non-leaf
Hierarchically aggregate all memcgs' MGLRU generations and their
page counts into working set page age histograms.
The histograms break down the system's working set per-node,
per-anon/file.
The sysfs interfaces are as follows:
/sys/devices/system/node/nodeX/page_age
A per-node page age hi
The refresh interval is a rate limiting factor to workingset page age
histogram reads. When a workingset report is generated, a timestamp
is noted, and the same report will be read until it expires beyond
the refresh interval, at which point a new report is generated.
Sysfs interface
/sys/devices/
When a node reaches its low watermarks and wakes up kswapd, notify all
userspace programs waiting on the workingset page age histogram of the
memory pressure, so a userspace agent can read the workingset report in
time and make policy decisions, such as logging, oom-killing, or
migration.
Sysfs in
Break down the system-wide working set reporting into
per-memcg reports, which aggregages its children hierarchically.
The per-node working set reporting histograms and refresh/report
threshold files are presented as memcg files, showing a report
containing all the nodes.
Memcg interface:
/sys/fs/
A reaccess refers to detecting an access on a page via refault
or access bit harvesting after the initial access. Similar to
the working set histogram, the reaccess histogram breaks down
reaccesses into user-defined bins.
It tracks reaccesses from MGLRU walks, where a move from older
generations t
For reliable and timely aging on memcgs, one has to read
the page age histograms on time. A kernel thread makes it easier
by aging memcgs with valid page_age_intervals and refresh_interval
when they can be refreshed, and also reduces the latency of any
userspace consumers of the page age histogram.
A basic test that verifies the working set size of a simple memory
accessor. It should work with or without the aging thread.
Question: I don't know how to best test file memory in selftests. Is
there a place where I should put the temporary file? /tmp can be tmpfs
mounted in many distros.
Signed
On Wed, Mar 27, 2024 at 02:30:59PM -0700, Yuanchu Xie wrote:
>
> Promotion/Demotion
> Similar to proactive reclaim, a workingset report enables demotion to a
> slower tier of memory.
> For promotion, the workingset report interfaces need to be extended to
> report hotness and gather hotness inform
On Wed, Mar 27, 2024 at 2:44 PM Gregory Price
wrote:
>
> On Wed, Mar 27, 2024 at 02:30:59PM -0700, Yuanchu Xie wrote:
> > I realize this does not generalize well to hotness information, but I
> > lack the intuition for an abstraction that presents hotness in a useful
> > way. Based on a recent pro
This patch series adds support to freeze the task cgroup hierarchy
that is on a default cgroup v2 without going through kernfs interface.
For some cases we want to freeze the cgroup of a task based on some
signals, doing so from bpf is better than user space which could be
too late.
Planned users
This patch adds a new cgroup helper cgroup_freeze_no_kn() to freeze a
cgroup hierarchy that is on a default cgroup v2 without going through
kernfs interface.
For some cases we want to freeze the cgroup of a task based on some
signals, doing so from bpf is better than user space which could be
too
This patch adds a new bpf helper bpf_task_freeze_cgroup() to freeze a
cgroup of a task and all its descendant cgroups. It requires the task
to be on the default cgroup v2 hierarchy.
For some cases we want to freeze the cgroup of a task based on some
signals, doing so from bpf is better than user s
This adds a selftest for `bpf_task_freeze_cgroup` kfunc. The test works
by forking a child then:
1. Child:
- Migrate to a new cgroup
- Loads bpf programs
- Trigger the 'lsm_freeze_cgroup' bpf program so it freeze itself.
by calling "bpf_task_freeze_cgroup(child, 1)"
<- wait for parent to
Hi Shuah,
On 2/27/2024 8:36 AM, Reinette Chatre wrote:
> Hi Shuah,
>
> Could you please consider this series for inclusion? I do admit that
> there has been a lot of resctrl selftest work recently. This should be
> it for a while as new work is still being worked on.
>
> Thank you very much.
>
On Tue, Mar 26, 2024 at 6:07 AM David Gow wrote:
>
> This is required, as CONFIG_DAMON_DEBUGFS is enabled, and --alltests UML
> builds will fail due to the missing config option otherwise.
>
> Fixes: f4cba4bf6777 ("mm/damon: rename CONFIG_DAMON_DBGFS to
> DAMON_DBGFS_DEPRECATED")
> Signed-off-by:
On 3/27/24 10:38, Jason Gunthorpe wrote:
On Wed, Mar 27, 2024 at 03:04:09PM +, Joao Martins wrote:
On 27/03/2024 11:40, Jason Gunthorpe wrote:
On Wed, Mar 27, 2024 at 10:41:52AM +, Joao Martins wrote:
On 25/03/2024 13:52, Jason Gunthorpe wrote:
On Mon, Mar 25, 2024 at 12:17:28PM +
Hi,
As mentioned in each patch, this implements the solution that we discussed in
December 2023, in [1]. This turned out to be very clean and easy. It should also
be quite easy to maintain.
This should also make Peter Zijlstra happy, because it directly addresses the
root cause of his "NAK NAK NA
Use tools/include/uapi/ files instead. These are obtained by taking a
snapshot: run "make headers" at the top level, then copy the desired
header file into the appropriate subdir in tools/uapi/.
This was discussed and solved in [1].
However, even before copying any additional files there, there a
These build errors only occur if one fails to first run "make headers".
However, that is a non-obvious and instrusive requirement, and so there
was a discussion on how to get rid of it [1]. This uses that solution.
These two files were created by taking a snapshot of the generated
header files tha
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