Return type for fault handlers in ext4 and nilfs are
changed to use vm_fault_t.
Return type of block_page_mkwrite() is changed from
int to vm_fault_t. The function signature of
block_page_mkwrite() is changed to add one new parameter
int *err. This will provide a way for caller functions
to get
Return type for fault handlers in ext4 and nilfs are
changed to use vm_fault_t.
Return type of block_page_mkwrite() is changed from
int to vm_fault_t. The function signature of
block_page_mkwrite() is changed to add one new parameter
int *err. This will provide a way for caller functions
to get
On Tue, Aug 28, 2018 at 3:58 AM Abel Vesa wrote:
>
> On Fri, Aug 24, 2018 at 09:40:11AM +0200, Sascha Hauer wrote:
> > +Cc Andrey Smirnov who made me aware of this issue.
> >
> > On Wed, Aug 22, 2018 at 04:48:21PM +0300, Abel Vesa wrote:
> > > From: Lucas Stach
> > >
> > > The SCCG is a new PLL
On Tue, Aug 28, 2018 at 3:58 AM Abel Vesa wrote:
>
> On Fri, Aug 24, 2018 at 09:40:11AM +0200, Sascha Hauer wrote:
> > +Cc Andrey Smirnov who made me aware of this issue.
> >
> > On Wed, Aug 22, 2018 at 04:48:21PM +0300, Abel Vesa wrote:
> > > From: Lucas Stach
> > >
> > > The SCCG is a new PLL
Hi all,
What's our plan with this work? Will this be routed via Steven's tree?
Thanks,
Song
On Wed, Aug 22, 2018 at 5:39 AM Srikar Dronamraju
wrote:
>
> * Ravi Bangoria [2018-08-20 10:12:47]:
>
> > Userspace Statically Defined Tracepoints[1] are dtrace style markers
> > inside userspace
Hi all,
What's our plan with this work? Will this be routed via Steven's tree?
Thanks,
Song
On Wed, Aug 22, 2018 at 5:39 AM Srikar Dronamraju
wrote:
>
> * Ravi Bangoria [2018-08-20 10:12:47]:
>
> > Userspace Statically Defined Tracepoints[1] are dtrace style markers
> > inside userspace
On Fri, Aug 24, 2018 at 06:04:29PM +0200, Luca Ceresoli wrote:
> Hi,
>
> here is a fix for a nasty audio capture problem when the axi-i2s
> output stream is fed to a Xilinx AXI-DMA.
Please don't send cover letters for single patches, if there is anything
that needs saying put it in the changelog
On Fri, Aug 24, 2018 at 06:04:29PM +0200, Luca Ceresoli wrote:
> Hi,
>
> here is a fix for a nasty audio capture problem when the axi-i2s
> output stream is fed to a Xilinx AXI-DMA.
Please don't send cover letters for single patches, if there is anything
that needs saying put it in the changelog
Rename 'pDot11dInfo', this member variable of the structure
ieee80211_device causes a checkpatch issue, CamelCase naming. The
member has been renamed 'dot11d_info' to clear this issue.
This is a coding style change which should have no impact on runtime
code execution.
Signed-off-by: John
Add the required SPDX-License-Identifier to the file r8180_93cx6.h,
this clears a checkpatch issue.
This is a coding style change which should have no impact on runtime
code execution.
Signed-off-by: John Whitmore
---
drivers/staging/rtl8192u/r8180_93cx6.h | 1 +
1 file changed, 1 insertion(+)
Rename 'pDot11dInfo', this member variable of the structure
ieee80211_device causes a checkpatch issue, CamelCase naming. The
member has been renamed 'dot11d_info' to clear this issue.
This is a coding style change which should have no impact on runtime
code execution.
Signed-off-by: John
Add the required SPDX-License-Identifier to the file r8180_93cx6.h,
this clears a checkpatch issue.
This is a coding style change which should have no impact on runtime
code execution.
Signed-off-by: John Whitmore
---
drivers/staging/rtl8192u/r8180_93cx6.h | 1 +
1 file changed, 1 insertion(+)
The structure rt_dot11d_info contains a memeber variable 'enabled',
which causes a checkpatch issue as it is declared as being of type
bool. The type of the variable has been changed to a 'u8', to clear
the issue.
Additionally to aid searching for the member variable in code it
has been renamed
The structure rt_dot11d_info contains a memeber variable 'enabled',
which causes a checkpatch issue as it is declared as being of type
bool. The type of the variable has been changed to a 'u8', to clear
the issue.
Additionally to aid searching for the member variable in code it
has been renamed
Remove unused definitions from the file r8180_93cx6.h.
This is a coding style change which should have no impact on runtime
code execution.
Signed-off-by: John Whitmore
---
drivers/staging/rtl8192u/r8180_93cx6.h | 18 --
1 file changed, 18 deletions(-)
diff --git
Remove unused definitions from the file r8180_93cx6.h.
This is a coding style change which should have no impact on runtime
code execution.
Signed-off-by: John Whitmore
---
drivers/staging/rtl8192u/r8180_93cx6.h | 18 --
1 file changed, 18 deletions(-)
diff --git
This short series of coding style changes clears the remaining checkpatch
issues in the files r8180_93cx6.h and dot11d.h. The file dot11d.h does
still contain lines over the 80 character limit, but most of these lines
are MACRO definitions, and I'm not sure splitting them will add anything
to the
This short series of coding style changes clears the remaining checkpatch
issues in the files r8180_93cx6.h and dot11d.h. The file dot11d.h does
still contain lines over the 80 character limit, but most of these lines
are MACRO definitions, and I'm not sure splitting them will add anything
to the
On 8/27/18 11:58 AM, Palmer Dabbelt wrote:
It's a bit confusing exactly what this function does: it actually
returns the hartid of an OF processor node, failing with -1 on invalid
nodes. I've changed the name to _hartid() in order to make that a bit
more clear, as well as adding a comment.
On 8/27/18 11:58 AM, Palmer Dabbelt wrote:
It's a bit confusing exactly what this function does: it actually
returns the hartid of an OF processor node, failing with -1 on invalid
nodes. I've changed the name to _hartid() in order to make that a bit
more clear, as well as adding a comment.
On Wed, Aug 22, 2018 at 6:52 AM Abel Vesa wrote:
>
> From: Lucas Stach
>
> The SCCG is a new PLL type introduced on i.MX8. Add support for this.
> The driver currently misses the PLL lock check, as the preliminary
> documentation mentions lock configurations, but is quiet about where
> to find
On Wed, Aug 22, 2018 at 6:52 AM Abel Vesa wrote:
>
> From: Lucas Stach
>
> The SCCG is a new PLL type introduced on i.MX8. Add support for this.
> The driver currently misses the PLL lock check, as the preliminary
> documentation mentions lock configurations, but is quiet about where
> to find
On Wed, Aug 22, 2018 at 7:05 AM Abel Vesa wrote:
>
> From: Lucas Stach
>
> Add driver for the Clock Control Module found on i.MX8MQ.
>
> This is largely based on the downstream driver from Anson Huang and
> Bai Ping at NXP, with only some small adaptions to mainline from me.
>
> Signed-off-by:
On Wed, Aug 22, 2018 at 7:05 AM Abel Vesa wrote:
>
> From: Lucas Stach
>
> Add driver for the Clock Control Module found on i.MX8MQ.
>
> This is largely based on the downstream driver from Anson Huang and
> Bai Ping at NXP, with only some small adaptions to mainline from me.
>
> Signed-off-by:
On Mon, Aug 27, 2018 at 01:30:37PM +0200, Michal Kubecek wrote:
> Building 4.19-rc1 kernel with CONFIG_KERNEL_XZ=y fails with this error:
>
> BOOTCC arch/powerpc/boot/decompress.o
> In file included from arch/powerpc/boot/../../../lib/decompress_unxz.c:233,
> from
On Mon, Aug 27, 2018 at 01:30:37PM +0200, Michal Kubecek wrote:
> Building 4.19-rc1 kernel with CONFIG_KERNEL_XZ=y fails with this error:
>
> BOOTCC arch/powerpc/boot/decompress.o
> In file included from arch/powerpc/boot/../../../lib/decompress_unxz.c:233,
> from
Reset the KASAN shadow state of the task stack before rewinding RSP.
Without this, a kernel oops will leave parts of the stack poisoned, and
code running under do_exit() can trip over such poisoned regions and cause
nonsensical false-positive KASAN reports about stack-out-of-bounds bugs.
This
Reset the KASAN shadow state of the task stack before rewinding RSP.
Without this, a kernel oops will leave parts of the stack poisoned, and
code running under do_exit() can trip over such poisoned regions and cause
nonsensical false-positive KASAN reports about stack-out-of-bounds bugs.
This
On 08/28/2018 06:53 AM, Patrick Bellasi wrote:
> +config UCLAMP_TASK_GROUP
> + bool "Utilization clamping per group of tasks"
> + depends on CGROUP_SCHED
> + depends on UCLAMP_TASK
> + default n
> + help
> + This feature enables the scheduler to track the clamped
On 08/28/2018 06:53 AM, Patrick Bellasi wrote:
> +config UCLAMP_TASK_GROUP
> + bool "Utilization clamping per group of tasks"
> + depends on CGROUP_SCHED
> + depends on UCLAMP_TASK
> + default n
> + help
> + This feature enables the scheduler to track the clamped
On Tue, 2018-08-28 at 02:14 +0300, Alexey Dobriyan wrote:
> Space savings -- 42 bytes!
>
> seq_puts71 29 [-42]
>
> Signed-off-by: Alexey Dobriyan
> ---
> fs/seq_file.c | 9 +
> 1 file changed, 1 insertion(+), 8 deletions(-)
>
> diff --git a/fs/seq_file.c
On Tue, 2018-08-28 at 02:14 +0300, Alexey Dobriyan wrote:
> Space savings -- 42 bytes!
>
> seq_puts71 29 [-42]
>
> Signed-off-by: Alexey Dobriyan
> ---
> fs/seq_file.c | 9 +
> 1 file changed, 1 insertion(+), 8 deletions(-)
>
> diff --git a/fs/seq_file.c
On Tue, 2018-08-28 at 17:28 +0200, Miguel Ojeda wrote:
> Hi,
>
> On Tue, Aug 28, 2018 at 3:57 PM, Richard Fitzgerald
> wrote:
> > Reviewed-by: Richard Fitzgerald
> >
> > A maintainer for MAINTAINERS would help avoid these problems, which will
> > tend to happen when changes to the file go
On Tue, 2018-08-28 at 17:28 +0200, Miguel Ojeda wrote:
> Hi,
>
> On Tue, Aug 28, 2018 at 3:57 PM, Richard Fitzgerald
> wrote:
> > Reviewed-by: Richard Fitzgerald
> >
> > A maintainer for MAINTAINERS would help avoid these problems, which will
> > tend to happen when changes to the file go
On 08/28/2018 11:40 AM, Will Deacon wrote:
> On Fri, Aug 24, 2018 at 05:05:59PM -0600, Shuah Khan (Samsung OSG) wrote:
>> Add NUMA emulation support to emulate NUMA on non-NUMA platforms. A new
>> CONFIG_NUMA_EMU option enables NUMA emulation and a new kernel command
>> line option "numa=fake=N"
On 08/28/2018 11:40 AM, Will Deacon wrote:
> On Fri, Aug 24, 2018 at 05:05:59PM -0600, Shuah Khan (Samsung OSG) wrote:
>> Add NUMA emulation support to emulate NUMA on non-NUMA platforms. A new
>> CONFIG_NUMA_EMU option enables NUMA emulation and a new kernel command
>> line option "numa=fake=N"
On Tue, Aug 28, 2018 at 11:18 PM Souptick Joarder wrote:
>
> As part of vm_fault_t conversion filemap_page_mkwrite()
> for NOMMU case was missed. Now converted.
>
> Signed-off-by: Souptick Joarder
cc: Matthew Wilcox
> ---
> mm/filemap.c | 4 ++--
> 1 file changed, 2 insertions(+), 2
On Tue, Aug 28, 2018 at 11:18 PM Souptick Joarder wrote:
>
> As part of vm_fault_t conversion filemap_page_mkwrite()
> for NOMMU case was missed. Now converted.
>
> Signed-off-by: Souptick Joarder
cc: Matthew Wilcox
> ---
> mm/filemap.c | 4 ++--
> 1 file changed, 2 insertions(+), 2
On Mon, 27 Aug 2018 16:04:16 -0700
Andy Lutomirski wrote:
> The 0day bot is still chewing on this, but I've tested it a bit locally
> and it seems to do the right thing.
Hi Andy,
the version of the patch below should fix the bug we talked about
in email yesterday. It should automatically
On Mon, 27 Aug 2018 16:04:16 -0700
Andy Lutomirski wrote:
> The 0day bot is still chewing on this, but I've tested it a bit locally
> and it seems to do the right thing.
Hi Andy,
the version of the patch below should fix the bug we talked about
in email yesterday. It should automatically
On 08/24/2018 01:41 PM, Frederic Weisbecker wrote:
> On Fri, Aug 24, 2018 at 11:10:44AM -0500, Grygorii Strashko wrote:
>> Yes. i do not see local_softirq_pending messages any more
>>
>> But one question, just to clarify, after patch "nohz: Fix missing tick
>> reprog while interrupting inline
On 08/24/2018 01:41 PM, Frederic Weisbecker wrote:
> On Fri, Aug 24, 2018 at 11:10:44AM -0500, Grygorii Strashko wrote:
>> Yes. i do not see local_softirq_pending messages any more
>>
>> But one question, just to clarify, after patch "nohz: Fix missing tick
>> reprog while interrupting inline
On 08/28/2018 04:18 PM, Arnaldo Carvalho de Melo wrote:
Em Tue, Aug 28, 2018 at 11:10:47AM -0300, Arnaldo Carvalho de Melo escreveu:
Em Mon, Aug 27, 2018 at 11:06:21AM +0200, Martin Liška escreveu:
On 08/23/2018 04:12 PM, Arnaldo Carvalho de Melo wrote:
Em Thu, Aug 23, 2018 at 02:29:34PM
On 08/28/2018 04:18 PM, Arnaldo Carvalho de Melo wrote:
Em Tue, Aug 28, 2018 at 11:10:47AM -0300, Arnaldo Carvalho de Melo escreveu:
Em Mon, Aug 27, 2018 at 11:06:21AM +0200, Martin Liška escreveu:
On 08/23/2018 04:12 PM, Arnaldo Carvalho de Melo wrote:
Em Thu, Aug 23, 2018 at 02:29:34PM
On Mon, Aug 27, 2018 at 06:48:58PM +0200, Vitaly Kuznetsov wrote:
> Using hypercall for sending IPIs is faster because this allows to specify
> any number of vCPUs (even > 64 with sparse CPU set), the whole procedure
> will take only one VMEXIT.
>
> Current Hyper-V TLFS (v5.0b) claims that
On Mon, Aug 27, 2018 at 06:48:58PM +0200, Vitaly Kuznetsov wrote:
> Using hypercall for sending IPIs is faster because this allows to specify
> any number of vCPUs (even > 64 with sparse CPU set), the whole procedure
> will take only one VMEXIT.
>
> Current Hyper-V TLFS (v5.0b) claims that
Enable the SFP connected to port 5 of the switch and wire up all GPIOs
to the SFP cage. Because of a hardware limitation of the i2c controller
on the iProc SoCs which prevents large i2c (> 63 bytes) transactions to
work, we use the i2c-gpio interface instead, which does not have that
limitation.
Enable the SFP connected to port 5 of the switch and wire up all GPIOs
to the SFP cage. Because of a hardware limitation of the i2c controller
on the iProc SoCs which prevents large i2c (> 63 bytes) transactions to
work, we use the i2c-gpio interface instead, which does not have that
limitation.
The Switch Register Access Block (SRAB) has one interrupt for link state
change on each ports (0-5, 7-8) a PHY interrupt, timestamping interrupt
and sleep timer interrupts for each management ports (5,7,8). Wire those
up so we can utilize them to speed up link resolution.
Signed-off-by: Florian
The Switch Register Access Block (SRAB) has one interrupt for link state
change on each ports (0-5, 7-8) a PHY interrupt, timestamping interrupt
and sleep timer interrupts for each management ports (5,7,8). Wire those
up so we can utilize them to speed up link resolution.
Signed-off-by: Florian
Document the Broadcom roboswitch Switch Register Access Block interrupt
lines and additional register base addresses for port mux configuration
and SGMII status/configuration registers.
Signed-off-by: Florian Fainelli
---
.../devicetree/bindings/net/dsa/b53.txt | 23 +++
1
Document the Broadcom roboswitch Switch Register Access Block interrupt
lines and additional register base addresses for port mux configuration
and SGMII status/configuration registers.
Signed-off-by: Florian Fainelli
---
.../devicetree/bindings/net/dsa/b53.txt | 23 +++
1
Hi all,
This patch series updates the ARM NSP DTS and BCM958625HR in order to
support the SFP connected to port 5 on these reference boards.
I will be submitting the functional changes to drivers/net/dsa/b53 once
net-next opens back up, but this is largely independent from getting
these 3
Hi all,
This patch series updates the ARM NSP DTS and BCM958625HR in order to
support the SFP connected to port 5 on these reference boards.
I will be submitting the functional changes to drivers/net/dsa/b53 once
net-next opens back up, but this is largely independent from getting
these 3
On Mon, 27 Aug 2018, Peter Zijlstra wrote:
> Something like so then?
>
> diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
> index eeb787b1c53c..f35eb72739c0 100644
> --- a/include/uapi/linux/perf_event.h
> +++ b/include/uapi/linux/perf_event.h
> @@ -144,7 +144,7 @@
On Mon, 27 Aug 2018, Peter Zijlstra wrote:
> Something like so then?
>
> diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
> index eeb787b1c53c..f35eb72739c0 100644
> --- a/include/uapi/linux/perf_event.h
> +++ b/include/uapi/linux/perf_event.h
> @@ -144,7 +144,7 @@
On Tue, 28 Aug 2018, Matthew Wilcox wrote:
> cramfs is the only remaining user of vm_insert_mixed; convert it.
>
> Signed-off-by: Matthew Wilcox
> ---
> fs/cramfs/inode.c | 9 +++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
>
On Tue, 28 Aug 2018, Matthew Wilcox wrote:
> cramfs is the only remaining user of vm_insert_mixed; convert it.
>
> Signed-off-by: Matthew Wilcox
> ---
> fs/cramfs/inode.c | 9 +++--
> 1 file changed, 7 insertions(+), 2 deletions(-)
>
> diff --git a/fs/cramfs/inode.c b/fs/cramfs/inode.c
>
As part of vm_fault_t conversion filemap_page_mkwrite()
for NOMMU case was missed. Now converted.
Signed-off-by: Souptick Joarder
---
mm/filemap.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 52517f2..de6fed2 100644
--- a/mm/filemap.c
As part of vm_fault_t conversion filemap_page_mkwrite()
for NOMMU case was missed. Now converted.
Signed-off-by: Souptick Joarder
---
mm/filemap.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 52517f2..de6fed2 100644
--- a/mm/filemap.c
--
Good morning and how are you doing this morning I believe good, My
name is Mrs. Evelyn Easmon, a US national, I got in contact with you
through online, I'm searching for someone that will assist me to
carry out this humanitarian work.
Briefly about my situation, I have been diagnosed with
--
Good morning and how are you doing this morning I believe good, My
name is Mrs. Evelyn Easmon, a US national, I got in contact with you
through online, I'm searching for someone that will assist me to
carry out this humanitarian work.
Briefly about my situation, I have been diagnosed with
On Fri, Aug 24, 2018 at 05:05:59PM -0600, Shuah Khan (Samsung OSG) wrote:
> Add NUMA emulation support to emulate NUMA on non-NUMA platforms. A new
> CONFIG_NUMA_EMU option enables NUMA emulation and a new kernel command
> line option "numa=fake=N" allows users to specify the configuration for
>
On Fri, Aug 24, 2018 at 05:05:59PM -0600, Shuah Khan (Samsung OSG) wrote:
> Add NUMA emulation support to emulate NUMA on non-NUMA platforms. A new
> CONFIG_NUMA_EMU option enables NUMA emulation and a new kernel command
> line option "numa=fake=N" allows users to specify the configuration for
>
On Fri, Aug 24, 2018 at 12:22:35PM +0100, Colin King wrote:
> From: Colin Ian King
>
> Trivial fix to spelling mistake in pr_err error message
>
> Signed-off-by: Colin Ian King
> ---
> kernel/locking/test-ww_mutex.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Given that this is
On Fri, Aug 24, 2018 at 12:22:35PM +0100, Colin King wrote:
> From: Colin Ian King
>
> Trivial fix to spelling mistake in pr_err error message
>
> Signed-off-by: Colin Ian King
> ---
> kernel/locking/test-ww_mutex.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Given that this is
at 1:49 AM, Masami Hiramatsu wrote:
> On Mon, 27 Aug 2018 16:01:32 -0700
> Andy Lutomirski wrote:
>
>> On Mon, Aug 27, 2018 at 3:54 PM, Nadav Amit wrote:
>>> at 3:32 PM, Andy Lutomirski wrote:
>>>
On Mon, Aug 27, 2018 at 2:55 PM, Nadav Amit wrote:
> at 1:16 PM, Nadav Amit wrote:
at 1:49 AM, Masami Hiramatsu wrote:
> On Mon, 27 Aug 2018 16:01:32 -0700
> Andy Lutomirski wrote:
>
>> On Mon, Aug 27, 2018 at 3:54 PM, Nadav Amit wrote:
>>> at 3:32 PM, Andy Lutomirski wrote:
>>>
On Mon, Aug 27, 2018 at 2:55 PM, Nadav Amit wrote:
> at 1:16 PM, Nadav Amit wrote:
On 8/28/2018 9:32 PM, Steven Rostedt wrote:
On Tue, 28 Aug 2018 18:47:33 +0530
Sai Prakash Ranjan wrote:
On 8/27/2018 9:45 PM, Steven Rostedt wrote:
On Sat, 25 Aug 2018 12:54:07 +0530
Sai Prakash Ranjan wrote:
Ftrace does not trace __raw{read,write}{b,l,w,q}() functions. I am not
sure
On 8/28/2018 9:32 PM, Steven Rostedt wrote:
On Tue, 28 Aug 2018 18:47:33 +0530
Sai Prakash Ranjan wrote:
On 8/27/2018 9:45 PM, Steven Rostedt wrote:
On Sat, 25 Aug 2018 12:54:07 +0530
Sai Prakash Ranjan wrote:
Ftrace does not trace __raw{read,write}{b,l,w,q}() functions. I am not
sure
Hello,
This version of the series is unchanged from v2 except for the last patch
which is completely new, and is provided by Mike Rapoport.
Original series description:
> A tester ran the upstream selftest on a distro kernel and sounded the
> alarm when it reported failures for features which
Since there's no point in doing anything in this case, immediately exit the
process.
And take the opportunity to improve the error message.
Before:
# ./userfaultfd shmem 10 10
nr_pages: 160, nr_pages_per_cpu: 40
userfaultfd syscall not available in this kernel
# echo $?
1
After:
#
If userfaultfd runs on a system that doesn't support some feature it is
trying to test, it currently ends with error code 1 which indicates
test failure:
# ./userfaultfd anon 10 10
nr_pages: 160, nr_pages_per_cpu: 80
bounces: 9, mode: rnd poll, userfaults: 7 59
bounces: 8, mode: poll,
Since there's no point in doing anything in this case, immediately exit the
process.
And take the opportunity to improve the error message.
Before:
# ./userfaultfd shmem 10 10
nr_pages: 160, nr_pages_per_cpu: 40
userfaultfd syscall not available in this kernel
# echo $?
1
After:
#
If userfaultfd runs on a system that doesn't support some feature it is
trying to test, it currently ends with error code 1 which indicates
test failure:
# ./userfaultfd anon 10 10
nr_pages: 160, nr_pages_per_cpu: 80
bounces: 9, mode: rnd poll, userfaults: 7 59
bounces: 8, mode: poll,
Hello,
This version of the series is unchanged from v2 except for the last patch
which is completely new, and is provided by Mike Rapoport.
Original series description:
> A tester ran the upstream selftest on a distro kernel and sounded the
> alarm when it reported failures for features which
If the userfaultfd test is run on a kernel with CONFIG_USERFAULTFD=n, it
will report that the system call is not available yet go ahead and continue
anyway:
# ./userfaultfd anon 30 1
nr_pages: 480, nr_pages_per_cpu: 120
userfaultfd syscall not available in this kernel
bounces: 0, mode:,
From: Mike Rapoport
When userfaultfd tests runs on older kernel that does not support
UFFDIO_ZEROPAGE for shared memory it fails at the ioctl verification.
Split out the verification that supported ioctls are superset of the
expected ioctls and relax the checks for UFFDIO_ZEROPAGE for shared
If the userfaultfd test is run on a kernel with CONFIG_USERFAULTFD=n, it
will report that the system call is not available yet go ahead and continue
anyway:
# ./userfaultfd anon 30 1
nr_pages: 480, nr_pages_per_cpu: 120
userfaultfd syscall not available in this kernel
bounces: 0, mode:,
From: Mike Rapoport
When userfaultfd tests runs on older kernel that does not support
UFFDIO_ZEROPAGE for shared memory it fails at the ioctl verification.
Split out the verification that supported ioctls are superset of the
expected ioctls and relax the checks for UFFDIO_ZEROPAGE for shared
Delay accounting already measures the time a task spends in direct
reclaim and waiting for swapin, but in low memory situations tasks
spend can spend a significant amount of their time waiting on
thrashing page cache. This isn't tracked right now.
To know the full impact of memory contention on
This version 4 of the PSI series incorporates feedback from Peter and
fixes two races in the lockless aggregator that Suren found in his
testing and which caused the sample calculation to sometimes underflow
and record bogusly large samples; details at the bottom of this email.
Delay accounting already measures the time a task spends in direct
reclaim and waiting for swapin, but in low memory situations tasks
spend can spend a significant amount of their time waiting on
thrashing page cache. This isn't tracked right now.
To know the full impact of memory contention on
This version 4 of the PSI series incorporates feedback from Peter and
fixes two races in the lockless aggregator that Suren found in his
testing and which caused the sample calculation to sometimes underflow
and record bogusly large samples; details at the bottom of this email.
There are several definitions of those functions/macros in places that
mess with fixed-point load averages. Provide an official version.
Signed-off-by: Johannes Weiner
---
.../platforms/cell/cpufreq_spudemand.c| 2 +-
arch/powerpc/platforms/cell/spufs/sched.c | 9 +++-
There are several definitions of those functions/macros in places that
mess with fixed-point load averages. Provide an official version.
Signed-off-by: Johannes Weiner
---
.../platforms/cell/cpufreq_spudemand.c| 2 +-
arch/powerpc/platforms/cell/spufs/sched.c | 9 +++-
kernel/sched/sched.h includes "stats.h" half-way through the file. The
next patch introduces users of sched.h's rq locking functions and
update_rq_clock() in kernel/sched/stats.h. Move those definitions up
in the file so they are available in stats.h.
Signed-off-by: Johannes Weiner
---
From: Johannes Weiner
If we keep just enough refault information to match the *current* page
cache during reclaim time, we could lose a lot of events when there is
only a temporary spike in non-cache memory consumption that pushes out
all the cache. Once cache comes back, we won't see those
It's going to be used in a later patch. Keep the churn separate.
Signed-off-by: Johannes Weiner
---
include/linux/sched/loadavg.h | 3 +
kernel/sched/loadavg.c| 138 +-
2 files changed, 72 insertions(+), 69 deletions(-)
diff --git
From: Johannes Weiner
If we keep just enough refault information to match the *current* page
cache during reclaim time, we could lose a lot of events when there is
only a temporary spike in non-cache memory consumption that pushes out
all the cache. Once cache comes back, we won't see those
It's going to be used in a later patch. Keep the churn separate.
Signed-off-by: Johannes Weiner
---
include/linux/sched/loadavg.h | 3 +
kernel/sched/loadavg.c| 138 +-
2 files changed, 72 insertions(+), 69 deletions(-)
diff --git
kernel/sched/sched.h includes "stats.h" half-way through the file. The
next patch introduces users of sched.h's rq locking functions and
update_rq_clock() in kernel/sched/stats.h. Move those definitions up
in the file so they are available in stats.h.
Signed-off-by: Johannes Weiner
---
On a system that executes multiple cgrouped jobs and independent
workloads, we don't just care about the health of the overall system,
but also that of individual jobs, so that we can ensure individual job
health, fairness between jobs, or prioritize some jobs over others.
This patch implements
When systems are overcommitted and resources become contended, it's
hard to tell exactly the impact this has on workload productivity, or
how close the system is to lockups and OOM kills. In particular, when
machines work multiple jobs concurrently, the impact of overcommit in
terms of latency and
On a system that executes multiple cgrouped jobs and independent
workloads, we don't just care about the health of the overall system,
but also that of individual jobs, so that we can ensure individual job
health, fairness between jobs, or prioritize some jobs over others.
This patch implements
When systems are overcommitted and resources become contended, it's
hard to tell exactly the impact this has on workload productivity, or
how close the system is to lockups and OOM kills. In particular, when
machines work multiple jobs concurrently, the impact of overcommit in
terms of latency and
do_sched_yield() disables IRQs, looks up this_rq() and locks it. The
next patch is adding another site with the same pattern, so provide a
convenience function for it.
Signed-off-by: Johannes Weiner
---
kernel/sched/core.c | 4 +---
kernel/sched/sched.h | 12
2 files changed, 13
do_sched_yield() disables IRQs, looks up this_rq() and locks it. The
next patch is adding another site with the same pattern, so provide a
convenience function for it.
Signed-off-by: Johannes Weiner
---
kernel/sched/core.c | 4 +---
kernel/sched/sched.h | 12
2 files changed, 13
Refaults happen during transitions between workingsets as well as
in-place thrashing. Knowing the difference between the two has a range
of applications, including measuring the impact of memory shortage on
the system performance, as well as the ability to smarter balance
pressure between the
Refaults happen during transitions between workingsets as well as
in-place thrashing. Knowing the difference between the two has a range
of applications, including measuring the impact of memory shortage on
the system performance, as well as the ability to smarter balance
pressure between the
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