On Sun, Sep 22, 2019 at 3:46 PM Matt Cover wrote:
>
> On Sun, Sep 22, 2019 at 3:30 PM Matt Cover wrote:
> >
> > On Sun, Sep 22, 2019 at 1:36 PM Michael S. Tsirkin wrote:
> > >
> > > On Sun, Sep 22, 2019 at 10:43:19AM -0700, Matt Cover wrote:
> > >
On Sun, Sep 22, 2019 at 3:30 PM Matt Cover wrote:
>
> On Sun, Sep 22, 2019 at 1:36 PM Michael S. Tsirkin wrote:
> >
> > On Sun, Sep 22, 2019 at 10:43:19AM -0700, Matt Cover wrote:
> > > On Sun, Sep 22, 2019 at 5:37 AM Michael S. Tsirkin
> > > wrote:
> &
On Sun, Sep 22, 2019 at 1:36 PM Michael S. Tsirkin wrote:
>
> On Sun, Sep 22, 2019 at 10:43:19AM -0700, Matt Cover wrote:
> > On Sun, Sep 22, 2019 at 5:37 AM Michael S. Tsirkin wrote:
> > >
> > > On Fri, Sep 20, 2019 at 11:58:43AM -0700, Matthew Cover wrote:
> &
On Sun, Sep 22, 2019 at 5:37 AM Michael S. Tsirkin wrote:
>
> On Fri, Sep 20, 2019 at 11:58:43AM -0700, Matthew Cover wrote:
> > Treat a negative return from a TUNSETSTEERINGEBPF bpf prog as a signal
> > to fallback to tun_automq_select_queue() for tx queue selection.
> >
> > Compilation of this
On Fri, Sep 20, 2019 at 11:59 AM Matthew Cover wrote:
>
> Treat a negative return from a TUNSETSTEERINGEBPF bpf prog as a signal
> to fallback to tun_automq_select_queue() for tx queue selection.
>
> Compilation of this exact patch was tested.
>
> For functional testing 3 additional printk()s
On Thu, Sep 19, 2019 at 7:45 PM Matt Cover wrote:
>
> On Thu, Sep 19, 2019 at 6:42 PM Jason Wang wrote:
> >
> >
> > On 2019/9/20 上午8:05, Matt Cover wrote:
> > > On Thu, Sep 19, 2019 at 3:45 PM Matthew Cover
> > > wrote:
> > >> W
On Thu, Sep 19, 2019 at 6:42 PM Jason Wang wrote:
>
>
> On 2019/9/20 上午8:05, Matt Cover wrote:
> > On Thu, Sep 19, 2019 at 3:45 PM Matthew Cover wrote:
> >> WORK IN PROGRESS:
> >>* bpf program loading works!
> >>* txq steering via bpf progra
On Thu, Sep 19, 2019 at 3:45 PM Matthew Cover wrote:
>
> WORK IN PROGRESS:
> * bpf program loading works!
> * txq steering via bpf program return code works!
> * bpf program unloading not working.
> * bpf program attached query not working.
>
> This patch set provides a bpf hookpoint with
On Tue, Sep 17, 2019 at 7:59 AM Jim Mattson wrote:
> On Tue, Sep 17, 2019 at 1:16 AM Wanpeng Li wrote:
> > From: Wanpeng Li
> >
> > Reported by syzkaller:
> >
> > #PF: supervisor write access in kernel mode
> > #PF: error_code(0x0002) - not-present page
> > PGD 403c01067
On Tue, Aug 27, 2019 at 1:53 AM Jiaxun Yang wrote:
> Loongson have a long history of contributing their code to mainline kernel.
> However, it seems like recent years, they are focusing on maintain a kernel
> by themselves
> rather than contribute there code to the community.
Do you know more
LUNs when events are missed to check if they are still
present. If not, remove them.
Signed-off-by: Matt Lupfer
---
drivers/scsi/virtio_scsi.c | 33 +
1 file changed, 33 insertions(+)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index
On Thu, Sep 5, 2019 at 8:23 AM Arnd Bergmann wrote:
>
> Matt bisected a sparc64 specific issue with semctl, shmctl and msgctl
> to a commit from my y2038 series in linux-5.1, as I missed the custom
> sys_ipc() wrapper that sparc64 uses in place of the generic version that
On Wed, Sep 04, 2019 at 05:14:33AM -0400, Michael S. Tsirkin wrote:
> On Tue, Sep 03, 2019 at 05:04:20PM +0000, Matt Lupfer wrote:
>> The event handler calls scsi_scan_host() when events are missed, which
>> will hotplug new LUNs. However, this function won't remove any
&g
LUNs when events are missed to check if they are still
present. If not, remove them.
Signed-off-by: Matt Lupfer
---
drivers/scsi/virtio_scsi.c | 31 +++
1 file changed, 31 insertions(+)
diff --git a/drivers/scsi/virtio_scsi.c b/drivers/scsi/virtio_scsi.c
index
The following commit has been merged into the sched/core branch of tip:
Commit-ID: a55c7454a8c887b226a01d7eed088ccb5374d81e
Gitweb:
https://git.kernel.org/tip/a55c7454a8c887b226a01d7eed088ccb5374d81e
Author:Matt Fleming
AuthorDate:Thu, 08 Aug 2019 20:53:01 +01:00
The following commit has been merged into the sched/core branch of tip:
Commit-ID: a2cbfd46559e809c8165773b7fe8afa058b35414
Gitweb:
https://git.kernel.org/tip/a2cbfd46559e809c8165773b7fe8afa058b35414
Author:Matt Fleming
AuthorDate:Thu, 08 Aug 2019 20:53:00 +01:00
e
balancer kicks in after a few seconds and forcibly moves some threads
to node 4.
Override node_reclaim_distance for AMD Zen.
Signed-off-by: Matt Fleming
Signed-off-by: Peter Zijlstra (Intel)
Acked-by: Mel Gorman
Cc: suravee.suthikulpa...@amd.com
Cc: Borislav Petkov
Cc: thomas.lenda...@amd.com
-off-by: Matt Fleming
Cc: Tony Luck
Cc: Rik van Riel
Cc: Peter Zijlstra
---
arch/ia64/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 7468d8e50467..997baba02b70 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -389,6 +389,7
'
page_alloc.c:(.text+0x7931): undefined reference to `node_reclaim_distance'
Matt Fleming (2):
ia64: Make NUMA select SMP
sched/topology: Improve load balancing on AMD EPYC
arch/ia64/Kconfig | 1 +
arch/x86/kernel/cpu/amd.c | 5 +
include/linux/topology.h | 14
Marvell's cp110 phy supports RXAUI on lanes 2, 3, 4, and 5 when
connected to port zero. When used in this mode, lanes operate in pairs
of two (2 and 3, 4 and 5).
Signed-off-by: Matt Pelland
---
drivers/phy/marvell/phy-mvebu-cp110-comphy.c | 127 ++-
1 file changed, 120
The documentation for Marvell's cp110 phy refers to these
registers/register regions as DTL control, DTL frequency loop enable,
etc. This patch aligns the relevant code for these accordingly.
Signed-off-by: Matt Pelland
---
drivers/phy/marvell/phy-mvebu-cp110-comphy.c | 22
This patch set introduces support for configuring Marvell's cp110 comphy for
RXAUI operation. I can post the other half of these patches (for mvpp2) here if
need be but I'm preparing to submit them to netdev shortly. I've tested this on
a Marvell Armada 7040 based platform with no issues.
>-Original Message-
>From: devel On Behalf Of Greg
>KH
>Sent: Thursday, August 01, 2019 11:35 AM
>To: Harsh Jain
>Cc: de...@driverdev.osuosl.org; linux-kernel@vger.kernel.org
>Subject: Re: [PATCH] staging:kpc2000:Fix dubious x | !y sparse warning
>
>On Thu, Aug 01, 2019 at 12:06:06AM
d from two parts of do_func()
and calls cleanup(). In theory we move them into do_func(), however
these in turn prove redundant so another simplification step
removes them as well.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 13 -
scripts/recordmcount.h | 2 --
2 files c
they're
related.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 151 ++---
1 file changed, 81 insertions(+), 70 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 5677fcc88a72..612268eabef4 100644
--- a/scripts
The uwrite() and ulseek() functions are formatted inconsistently
with the rest of the file and the kernel overall. While we're
making other changes here let's fix this.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 21 +++--
scripts/recordmcount.h | 13
-- there we use pointer comparison
rather than string comparison to differentiate between
previously-processed object files and returning the name of a text
section.
Signed-off-by: Matt Helsley
--
v3.5 -- Moved already_has_mcount into recordmcount.c to avoid
unnecessary multiple
Fix up the whitespace irregularity in the ELF switch
blocks.
Swapping the initial value of gpfx allows us to
simplify all but one of the one-line switch cases even
further.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 47 ++
1 file changed
(). Worse, they obscure the fact that at the time
uwrite() and ulseek() are called fd_map is not a valid file descriptor.
Remove the unused file descriptor parameters that make it look like
fd_map is still valid.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 16
scripts
only caller,
mmap_file(), is doing the relevant allocations and associated
initializations.
Therefore it's clearer to use a plain read() call to initialize the
data in mmap_file() and remove uread().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 18 +-
1 file changed, 5
The strcmp is unnecessary since .text is already accepted as a
prefix in the strncmp().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 8387a9bc064a..ebe98c39f3cd
to follow inverted
christmas tree style.
Matt Helsley (8):
recordmcount: Remove redundant strcmp
recordmcount: Remove uread()
recordmcount: Remove unused fd from uwrite() and ulseek()
recordmcount: Rewrite error/success handling
recordmcount: Kernel style function signature
> On Jul 28, 2019, at 10:48 AM, Josh Poimboeuf wrote:
>
> On Wed, Jul 24, 2019 at 02:05:04PM -0700, Matt Helsley wrote:
>> diff --git a/scripts/Makefile.build b/scripts/Makefile.build
>> index 08b70ee9614a..43707491317c 100644
>> --- a/scripts/Makefile.build
>
> On Jul 28, 2019, at 10:48 AM, Josh Poimboeuf wrote:
>
> On Wed, Jul 24, 2019 at 02:05:03PM -0700, Matt Helsley wrote:
>> Move recordmcount into the objtool directory. We keep this step separate
>> so changes which turn recordmcount into a subcommand of objtool
ith the active load balancer kicking in after a few
seconds, but I suspect that is related to the use of group capacity
elsewhere
in the load balancer code (like update_sg_lb_stats()).
--
Matt Fleming
SUSE Performance Team
> On Jul 26, 2019, at 11:43 AM, Steven Rostedt wrote:
>
> On Fri, 26 Jul 2019 18:37:11 +0000
> Matt Helsley wrote:
>
>>>> diff --git a/scripts/recordmcount.h b/scripts/recordmcount.h
>>>> index c1e1b04b4871..909a3e4775c2 100644
>>>&
> On Jul 26, 2019, at 10:45 AM, Steven Rostedt wrote:
>
> On Wed, 24 Jul 2019 14:04:58 -0700
> Matt Helsley wrote:
>
>
> Hi Matt,
>
> As I'm applying these for real, I'm taking a deeper look at the
> patches. This one I have some questions about.
>
&g
got any faster or slower.
Matt Helsley (13):
recordmcount: Remove redundant strcmp
recordmcount: Remove uread()
recordmcount: Remove unused fd from uwrite() and ulseek()
recordmcount: Rewrite error/success handling
recordmcount: Kernel style function signature formatting
reco
The uwrite() and ulseek() functions are formatted inconsistently
with the rest of the file and the kernel overall. While we're
making other changes here let's fix this.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 21 +++--
scripts/recordmcount.h | 13
-- the libelf/objtool
way and the old recordmcount wrapper way which avoids these
extra data structures by using indices, offsets, and pointers
into the mmapped ELF file.
Subsequent patches will convert from the old recordmcount
accessors to the libelf/objtool accessors.
Signed-off-by: Matt Helsley
to change the ELF
file -- it only changes the way we walk the ELF sections and
touch pages for memory mapping made by the old recordmcount code.
Signed-off-by: Matt Helsley
---
tools/objtool/recordmcount.h | 70 ++--
1 file changed, 36 insertions(+), 34 deletions
they're
related.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 151 ++---
1 file changed, 81 insertions(+), 70 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 111419c282d3..9f4af109277e 100644
--- a/scripts
recordmcount to be more easily readable and remove
recordmcount's crude accessor wrapping code.
Signed-off-by: Matt Helsley
---
Makefile | 6 +--
scripts/Makefile.build | 22 +--
tools/objtool/Build| 3 +-
tools/objtool/Makefile | 12
Fix up the whitespace irregularity in the ELF switch
blocks.
Swapping the initial value of gpfx allows us to
simplify all but one of the one-line switch cases even
further.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 47 ++
1 file changed
string
pointer trick.
Signed-off-by: Matt Helsley
---
tools/objtool/recordmcount.c | 2 --
tools/objtool/recordmcount.h | 22 +++---
2 files changed, 3 insertions(+), 21 deletions(-)
diff --git a/tools/objtool/recordmcount.c b/tools/objtool/recordmcount.c
index 28b5c5e4beae
d from two parts of do_func()
and calls cleanup(). In theory we move them into do_func(), however
these in turn prove redundant so another simplification step
removes them as well.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 13 -
scripts/recordmcount.h | 2 --
2 files c
Move recordmcount into the objtool directory. We keep this step separate
so changes which turn recordmcount into a subcommand of objtool don't
get obscured.
Signed-off-by: Matt Helsley
---
scripts/.gitignore | 1 -
scripts/Makefile | 1
(). Worse, they obscure the fact that at the time
uwrite() and ulseek() are called fd_map is not a valid file descriptor.
Remove the unused file descriptor parameters that make it look like
fd_map is still valid.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 16
scripts
-- there we use pointer comparison
rather than string comparison to differentiate between
previously-processed object files and returning the name of a text
section.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 160 +
scripts/recordmcount.h | 134
The strcmp is unnecessary since .text is already accepted as a
prefix in the strncmp().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 8387a9bc064a..ebe98c39f3cd
only caller,
mmap_file(), is doing the relevant allocations and associated
initializations.
Therefore it's clearer to use a plain read() call to initialize the
data in mmap_file() and remove uread().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 18 +-
1 file changed, 5
’d add:
I rebased yesterday and noticed a few minor changes are needed to resolve
conflicts with mainline. I will send a v3 out today with these changes:
renaming elf_open to elf_read
some kernel build changes (in Makefile.build)
Also, I’ve finished removing all of the old rec
Commit-ID: b8f70953c1251d8b16276995816a95639f598e70
Gitweb: https://git.kernel.org/tip/b8f70953c1251d8b16276995816a95639f598e70
Author: Matt Mullins
AuthorDate: Tue, 23 Jul 2019 21:20:58 -0700
Committer: Thomas Gleixner
CommitDate: Wed, 24 Jul 2019 12:17:39 +0200
x86/entry/32: Pass
page_fault and async_page_fault.
For a 32-bit KVM guest, this fixes:
[1.148669][T1] Run /sbin/init as init process
[1.153328][T1] Starting init: /sbin/init exists but couldn't execute it
(error -14)
Fixes: a0d14b8909de ("x86/mm, tracing: Fix CR2 corruption")
Signed-
e
balancer kicks in after a few seconds and forcibly moves some threads
to node 4.
Override node_reclaim_distance for AMD Zen.
Signed-off-by: Matt Fleming
Cc: "Suthikulpanit, Suravee"
Cc: Mel Gorman
Cc: "Lendacky, Thomas"
Cc: Borislav Petkov
---
arch/x86/kernel/cpu
>From: Bharath Vedartham
>Changes since v2
>- Added back PageResevered check as suggested by John Hubbard.
>
>The PageReserved check needs a closer look and is not worth messing
>around with for now.
>
>Matt, Could you give any suggestions for testing this patch?
It looks like Outlook is going to absolutely trash this email. Hopefully it
comes through okay.
>> There have been issues with get_user_pages and filesystem writeback.
>> The issues are better described in [1].
>>
>> The solution being proposed wants to keep track of gup_pinned pages
>which
On Wed, 26 Jun, at 09:18:01PM, Suthikulpanit, Suravee wrote:
>
> We use 16 to designate 1-hop latency (for different node within the same
> socket).
> For across-socket access, since the latency is greater, we set the latency to
> 32
> (twice the latency of 1-hop) not aware of the
Hi,
Any feedback on this patch?
Thanks,
Matt
On 24/04/2019 14:22, Matthew Redfearn wrote:
> In contrast to all of the DSI panel drivers in drivers/gpu/drm/panel
> which attach to the DSI host via mipi_dsi_attach() at probe time, the
> ADV7533 bridge device does not. Instead
On Tue, 18 Jun, at 02:33:18PM, Peter Zijlstra wrote:
> On Tue, Jun 18, 2019 at 11:43:19AM +0100, Matt Fleming wrote:
> > This works for me under all my tests. Thoughts?
> >
> > --->8---
> >
> > diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/ker
On Tue, 11 Jun, at 05:22:21PM, Lendacky, Thomas wrote:
> On 6/10/19 4:26 PM, Matt Fleming wrote:
> > On Wed, 05 Jun, at 08:00:35PM, Peter Zijlstra wrote:
> >>
> >> And then we had two magic values :/
> >>
> >> Should we not 'fix' RECLAIM_DISTANCE for
On Mon, 2019-06-17 at 19:09 -0400, Steven Rostedt wrote:
> On Mon, 17 Jun 2019 08:26:29 -0700
> Alexei Starovoitov wrote:
>
> > On Mon, Jun 17, 2019 at 5:59 AM Arnd Bergmann wrote:
> > >
> > > When CONFIG_MODULES is disabled, this function is never called:
> > >
> > >
On Fri, 2019-06-14 at 16:50 +0200, Daniel Borkmann wrote:
> On 06/14/2019 02:51 AM, Matt Mullins wrote:
> > On Fri, 2019-06-14 at 00:47 +0200, Daniel Borkmann wrote:
> > > On 06/12/2019 07:00 AM, Andrii Nakryiko wrote:
> > > > On Tue, Jun 11, 2019
On Fri, 2019-06-14 at 00:47 +0200, Daniel Borkmann wrote:
> On 06/12/2019 07:00 AM, Andrii Nakryiko wrote:
> > On Tue, Jun 11, 2019 at 8:48 PM Matt Mullins wrote:
> > >
> > > BPF_PROG_TYPE_RAW_TRACEPOINTs can be executed nested on the same CPU, as
> > > t
Commit-ID: 71ab8323cc357c68985a2d6fc6cfc22b1dbbc1c3
Gitweb: https://git.kernel.org/tip/71ab8323cc357c68985a2d6fc6cfc22b1dbbc1c3
Author: Matt Mullins
AuthorDate: Fri, 31 May 2019 12:47:54 -0700
Committer: Borislav Petkov
CommitDate: Wed, 12 Jun 2019 18:52:44 +0200
x86/kgdb: Return 0
(). Worse, they obscure the fact that at the time
uwrite() and ulseek() are called fd_map is not a valid file descriptor.
Remove the unused file descriptor parameters that make it look like
fd_map is still valid.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 16
scripts
they're
related.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 151 ++---
1 file changed, 81 insertions(+), 70 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 111419c282d3..9f4af109277e 100644
--- a/scripts
quot;idle" GUI tasks running. This is why I took the median
rather than the mean. Though I haven't run the statistics, my
sense is the numbers don't support concluding that things really
got any faster or slower.
I'm working on a separate, follow-on RFC set which implements th
-- the libelf/objtool
way and the old recordmcount wrapper way which avoids these
extra data structures by using indices, offsets, and pointers
into the mmapped ELF file.
Subsequent patches will convert from the old recordmcount
accessors to the libelf/objtool accessors.
Signed-off-by: Matt Helsley
only caller,
mmap_file(), is doing the relevant allocations and associated
initializations.
Therefore it's clearer to use a plain read() call to initialize the
data in mmap_file() and remove uread().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 18 +-
1 file changed, 5
Fix up the whitespace irregularity in the ELF switch
blocks.
Swapping the initial value of gpfx allows us to
simplify all but one of the one-line switch cases even
further.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 47 ++
1 file changed
-- there we use pointer comparison
rather than string comparison to differentiate between
previously-processed object files and returning the name of a text
section.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 160 +
scripts/recordmcount.h | 134
The uwrite() and ulseek() functions are formatted inconsistently
with the rest of the file and the kernel overall. While we're
making other changes here let's fix this.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 21 +++--
scripts/recordmcount.h | 13
The strcmp is unnecessary since .text is already accepted as a
prefix in the strncmp().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 8387a9bc064a..ebe98c39f3cd
to change the ELF
file -- it only changes the way we walk the ELF sections and
touch pages for memory mapping made by the old recordmcount code.
Signed-off-by: Matt Helsley
---
tools/objtool/recordmcount.h | 70 ++--
1 file changed, 36 insertions(+), 34 deletions
d from two parts of do_func()
and calls cleanup(). In theory we move them into do_func(), however
these in turn prove redundant so another simplification step
removes them as well.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 13 -
scripts/recordmcount.h | 2 --
2 files c
Move recordmcount into the objtool directory. We keep this step separate
so changes which turn recordmcount into a subcommand of objtool don't
get obscured.
Signed-off-by: Matt Helsley
---
scripts/.gitignore | 1 -
scripts/Makefile | 1
recordmcount to be more easily readable and remove
recordmcount's crude accessor wrapping code.
Signed-off-by: Matt Helsley
---
Makefile | 6 +--
scripts/Makefile.build | 24 ++--
tools/objtool/Build| 3 +-
tools/objtool/Makefile | 12
string
pointer trick.
Signed-off-by: Matt Helsley
---
tools/objtool/recordmcount.c | 2 --
tools/objtool/recordmcount.h | 22 +++---
2 files changed, 3 insertions(+), 21 deletions(-)
diff --git a/tools/objtool/recordmcount.c b/tools/objtool/recordmcount.c
index 61050b78d5a0
in nmi context
(at most one of which may be a kprobe or perf event).
Fixes: 20b9d7ac4852 ("bpf: avoid excessive stack usage for perf_sample_data")
Signed-off-by: Matt Mullins
---
v1->v2:
* reverse-Christmas-tree-ize the declarations in bpf_perf_event_output
* instantiate err
>-Original Message-
>From: devel On Behalf Of
>Geordan Neukum
>
>This inb() call looks like a bug. We perform a 64-bit operation when
>talking to this hardware register everywhere else in this driver. Anyone
>have more insight into the hardware with which this driver interacts
>such that
On Wed, 05 Jun, at 08:00:35PM, Peter Zijlstra wrote:
>
> And then we had two magic values :/
>
> Should we not 'fix' RECLAIM_DISTANCE for EPYC or something? Because
> surely, if we want to load-balance agressively over 30, then so too
> should we do node_reclaim() I'm thikning.
Yeah we can fix
On Thu, 2019-06-06 at 15:13 -0700, Jakub Kicinski wrote:
> On Thu, 6 Jun 2019 11:54:27 -0700, Matt Mullins wrote:
> > BPF_PROG_TYPE_RAW_TRACEPOINTs can be executed nested on the same CPU, as
> > they do not increment bpf_prog_active while executing.
> >
> > This enab
BPF_PROG_TYPE_RAW_TRACEPOINTs can be executed nested on the same CPU, as
they do not increment bpf_prog_active while executing.
This enables three levels of nesting, to support
- a kprobe or raw tp or perf event,
- another one of the above that irq context happens to call, and
- another one
>This was reported by sparse:
>drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.c:39:7: warning: symbol
>'kpc_dma_add_device
>' was not declared. Should it be static?
>
>Signed-off-by: Valerio Genovese
>---
> drivers/staging/kpc2000/kpc_dma/kpc_dma_driver.h | 1 +
> 1 file changed, 1 insertion(+)
>
e
balancer kicks in after a few seconds and forcibly moves some threads
to node 4.
Update the code in sd_init() to account for modern node distances, and
maintaining backward-compatible behaviour by respecting
RECLAIM_DISTANCE for distances more than 2 hops.
Signed-off-by: Matt Fleming
Cc: &quo
On Tue, 2019-06-04 at 02:43 +0200, Daniel Borkmann wrote:
> On 06/04/2019 01:54 AM, Alexei Starovoitov wrote:
> > On Mon, Jun 3, 2019 at 4:48 PM Daniel Borkmann wrote:
> > > On 06/04/2019 01:27 AM, Alexei Starovoitov wrote:
> > > > On Mon, Jun 3, 2019
On Mon, 2019-06-03 at 15:22 +0200, Daniel Borkmann wrote:
> On 06/03/2019 03:08 PM, Daniel Borkmann wrote:
> > On 06/01/2019 12:37 AM, Matt Mullins wrote:
> > > It is possible that a BPF program can be called while another BPF
> > > program is executing bpf_perf_e
t and fail a bpf_perf_event_output
if that element is concurrently being used.
Fixes: 20b9d7ac4852 ("bpf: avoid excessive stack usage for perf_sample_data")
Signed-off-by: Matt Mullins
---
v1->v2:
keep a pointer to the struct perf_sample_data rather than directly
embedd
.
Cannot access memory at address 0x81288910
Command aborted.
Fixes: 86a22057127d ("x86/kgdb: Avoid redundant comparison of patched code")
Signed-off-by: Matt Mullins
---
arch/x86/kernel/kgdb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/
On Thu, 2019-05-30 at 23:28 +, Song Liu wrote:
> > On May 30, 2019, at 3:55 PM, Matt Mullins wrote:
> >
> > It is possible that a BPF program can be called while another BPF
> > program is executing bpf_perf_event_output. This has been observed with
> > I/O co
d their arguments came afterwards?
I'm thinking it'd go somewhat like this:
objtool foo.o [bar.o] -- check [check opts] + \
orc generate [orc opts] + \
mcount record [mcount opts]
Then objtool would iterate over the object file(s) to open,
hand off the ELF data structures into each successive pass, and
finally write any accumulated changes back.
Cheers,
-Matt
>From: devel On Behalf Of
>Greg KH
>On Fri, May 24, 2019 at 01:07:59PM +0200, Simon Sandström wrote:
>> --- a/drivers/staging/kpc2000/kpc2000/core.c
>> +++ b/drivers/staging/kpc2000/kpc2000/core.c
>> @@ -276,18 +276,18 @@ static ssize_t kp2000_cdev_read(struct file *filp,
>
>This whole function
t and fail a bpf_perf_event_output
if that element is concurrently being used.
Fixes: 20b9d7ac4852 ("bpf: avoid excessive stack usage for perf_sample_data")
Signed-off-by: Matt Mullins
---
It felt a bit overkill, but I had to split bpf_event_entry into its own
header file to break a
The uwrite() and ulseek() functions are formatted inconsistently
with the rest of the file and the kernel overall. While we're
making other changes here let's fix this.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 21 +++--
scripts/recordmcount.h | 13
The strcmp is unnecessary since .text is already accepted as a
prefix in the strncmp().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index a50a2aa963ad..7f835059e7c2
only caller,
mmap_file(), is doing the relevant allocations and associated
initializations.
Therefore it's clearer to use a plain read() call to initialize the
data in mmap_file() and remove uread().
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 18 +-
1 file changed, 5
Move recordmcount into the objtool directory. We keep this step separate
so changes which turn recordmcount into a subcommand of objtool don't
get obscured.
Signed-off-by: Matt Helsley
---
scripts/.gitignore | 1 -
scripts/Makefile | 1
they're
related.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 151 ++---
1 file changed, 81 insertions(+), 70 deletions(-)
diff --git a/scripts/recordmcount.c b/scripts/recordmcount.c
index 1c8b38c0d7fe..697c567c2517 100644
--- a/scripts
-- there we use pointer comparison
rather than string comparison to differentiate between
previously-processed object files and returning the name of a text
section.
Signed-off-by: Matt Helsley
---
scripts/recordmcount.c | 160 +
scripts/recordmcount.h | 134
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