In some cases, an event may be created without needing a counter
allocation. For example, an lbr event may be created by the host
only to help save/restore the lbr stack on the vCPU context switching.
This patch adds a new interface to allow users to create a perf event
without the need of counter
The vCPU lbr event relies on the host to save/restore all the lbr
related MSRs. So add the LBR_SELECT save/restore to the related
functions for the vCPU case.
Signed-off-by: Wei Wang
Cc: Peter Zijlstra
Cc: Andi Kleen
---
arch/x86/events/intel/lbr.c | 7 +++
arch/x86/events/perf_event.h |
On 05.06.2019 21:42, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: b2924447 Add linux-next specific files for 20190605
> git tree: linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=17e867eea0
> kernel config: https://syzkaller.
On 6/5/19 11:53 PM, Shuah Khan wrote:
> Fix the following cppcheck error:
>
> Checking drivers/media/v4l2-core/v4l2-ioctl.c ...
> Checking drivers/media/v4l2-core/v4l2-ioctl.c: CONFIG_VIDEO_ADV_DEBUG...
> [drivers/media/v4l2-core/v4l2-ioctl.c:2470]: (error) Uninitialized variable:
> sd
This is a
śr., 5 cze 2019 o 17:12 Keerthy napisał(a):
>
>
>
> On 05/06/19 7:56 PM, Bartosz Golaszewski wrote:
> > śr., 5 cze 2019 o 10:02 Keerthy napisał(a):
> >>
> >> Add new compatible for K3 AM654 SoCs.
> >>
> >> Signed-off-by: Keerthy
> >> ---
> >> drivers/gpio/gpio-davinci.c | 1 +
> >> 1 file cha
On Thu, May 30, 2019 at 08:00:12AM -0700, Paul E. McKenney wrote:
> The sync_exp_work_done() function uses smp_mb__before_atomic(), but
> there is no obvious atomic in the ensuing code. The ordering is
> absolutely required for grace periods to work correctly, so this
> commit upgrades the smp_mb_
Hi Vincent,
On Thursday 06 Jun 2019 at 09:05:16 (+0200), Vincent Guittot wrote:
> Hi Quentin,
>
> On Wed, 5 Jun 2019 at 19:21, Quentin Perret wrote:
> >
> > On Friday 17 May 2019 at 14:55:19 (-0700), Stephen Boyd wrote:
> > > Quoting Amit Kucheria (2019-05-16 04:54:45)
> > > > (cc'ing Andy's cor
On Thu, 2019-06-06 at 08:05 +0100, Marc Zyngier wrote:
>
> > I disagree Marc. This is a rather bad error which indicates that the
> > device-tree is probably incorrect (or the HW was wired in a way that
> > cannot work).
>
> But surely that's something you'll spot pretty quickly.
Not really. A l
Am Donnerstag, 6. Juni 2019, 09:38:41 CEST schrieb Rolf Eike Beer:
> Greg KH wrote:
> > On Wed, Jun 05, 2019 at 05:19:40PM +0200, Rolf Eike Beer wrote:
> > > I decided to dig out a toy project which uses a DragonBoard 410c. This
> > > has
> > > been "running" with kernel 4.9, which I would keep thi
On 5/31/2019 8:14 AM, Borislav Petkov wrote:
On Fri, May 31, 2019 at 01:15:33AM +, Herrenschmidt, Benjamin wrote:
This isn't terribly helpful, there's nothing telling anybody which of
those files corresponds to an ARM SoC :-)
drivers/edac/altera_edac.c is one example.
Also, James and I
Commit-ID: e35faeb64146f2015f2aec14b358ae508e4066db
Gitweb: https://git.kernel.org/tip/e35faeb64146f2015f2aec14b358ae508e4066db
Author: Kan Liang
AuthorDate: Mon, 3 Jun 2019 06:41:20 -0700
Committer: Borislav Petkov
CommitDate: Thu, 6 Jun 2019 09:42:36 +0200
x86/CPU: Add more Icelake m
>From cca931322233827dc21c7609f21f4042d78f220e Mon Sep 17 00:00:00 2001
From: Rolf Eike Beer
Date: Thu, 22 Nov 2018 16:40:49 +0100
Subject: scripts: use pkg-config to locate libcrypto
Otherwise build fails if the headers are not in the default location. While at
it also ask pkg-config for the lib
On my Juno board with ARM64 CPUs, perf trace command reports the eBPF
program building failure but the command will not exit and continue to
run. If we define an eBPF event in config file, the event will be
parsed with below flow:
perf_config()
`> trace__config()
`> parse_events_op
When I tried to run the trace on arm64 platform with eBPF program
augmented_raw_syscalls, it reports several failures for eBPF program
compilation. So tried to resolve these issues and this patch set is
the working result.
0001 patch lets perf command to exit directly if find eBPF program
buildin
The macro SYS_EXECVE has been defined twice, remove the duplicate one.
Signed-off-by: Leo Yan
---
tools/perf/examples/bpf/augmented_raw_syscalls.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/tools/perf/examples/bpf/augmented_raw_syscalls.c
b/tools/perf/examples/bpf/augmented_raw_syscalls
To build this program successfully with clang, there have three
compiler options need to be specified:
- Header file path: tools/perf/include/bpf;
- Specify architecture;
- Define macro __NR_CPUS__.
This patch add comments to explain the reasons for building failure and
give two examples fo
This patch adds support for arm64 raw syscall numbers so that we can use
it on arm64 platform.
After applied this patch, we need to specify macro -D__aarch64__ or
-D__x86_64__ in compilation option so Clang can use the corresponding
syscall numbers for arm64 or x86_64 respectively, other architect
The Linux guest page size and hypervisor page size concepts are
different, even though they happen to be the same value on x86. Hyper-V
code mixes up the two, so this patchset begins to address that by
creating and using a set of Hyper-V specific page definitions.
A major benefit of those new defi
On Wed, Jun 05, 2019 at 01:07:25PM -0400, Douglas Gilbert wrote:
> On 2019-06-05 2:00 a.m., Jiri Slaby wrote:
> >On 23. 05. 19, 4:38, Gen Zhang wrote:
> >>In sg_write(), the opcode of the command is fetched the first time from
> >>the userspace by __get_user(). Then the whole command, the opcode
>
Define HV_HYP_PAGE_SHIFT, HV_HYP_PAGE_SIZE, and HV_HYP_PAGE_MASK because
the Linux guest page size and hypervisor page size concepts are
different, even though they happen to be the same value on x86.
Also, replace PAGE_SIZE with HV_HYP_PAGE_SIZE.
Signed-off-by: Maya Nakamura
---
arch/x86/inclu
On Wed, Jun 05, 2019 at 01:16:46PM -0700, Linus Torvalds wrote:
> On Wed, Jun 5, 2019 at 6:49 AM Jan Glauber wrote:
> >
> > Add an upper bound to the loop to force the fallback to spinlocks
> > after some time. A retry value of 100 should not impact any hardware
> > that does not have this issue.
On Wed, Jun 05, 2019 at 01:52:15PM -0700, Linus Torvalds wrote:
> On Wed, Jun 5, 2019 at 1:19 PM Peter Zijlstra wrote:
> >
> > Urgh, that's another things that's been on the TODO list for a long long
> > time, write code to verify the alignment of allocations :/ I'm
> > suspecting quite a lot of t
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Introduce two new functions, hv_alloc_hyperv_page() and
hv_free_hyperv_page(), to allocate/deallocate memory with the size and
alignment that Hyper-V expects as a page. Although currently they are
not used, they are ready to be used to allocate/deallocate memory on x86
when their ARM64 counterparts
at 15:55, Kai-Heng Feng wrote:
at 18:22, Kai-Heng Feng wrote:
at 00:01, Kai-Heng Feng wrote:
On Jan 30, 2019, at 16:21, Greg KH wrote:
On Thu, Jan 24, 2019 at 02:16:43PM +0800, Kai-Heng Feng wrote:
The QCA Rome USB Bluetooth controller has several issues once LPM gets
enabled:
- Fails
Replace PAGE_SIZE with HV_HYP_PAGE_SIZE because the guest page size may
not be 4096 on all architectures and Hyper-V always runs with a page
size of 4096.
Signed-off-by: Maya Nakamura
---
drivers/hv/hyperv_vmbus.h | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/driver
On 6/1/2019 12:05 AM, Douglas Anderson wrote:
In commit abb621844f6a ("usb: ch9: make usb_endpoint_maxp() return
only packet size") the API to usb_endpoint_maxp() changed. It used to
just return wMaxPacketSize but after that commit it returned
wMaxPacketSize with the high bits (the multiplier) m
Define the ring buffer size as a constant expression because it should
not depend on the guest page size.
Signed-off-by: Maya Nakamura
---
drivers/hid/hid-hyperv.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hid/hid-hyperv.c b/drivers/hid/hid-hyperv.c
index d3
On Wed, 05 Jun 2019 12:14:50 -0700 (PDT)
David Miller wrote:
> From: Ivan Khoronzhuk
> Date: Wed, 5 Jun 2019 16:20:02 +0300
>
> > This patchset adds XDP support for TI cpsw driver and base it on
> > page_pool allocator. It was verified on af_xdp socket drop,
> > af_xdp l2f, ebpf XDP_DROP, XDP_
Define the ring buffer size as a constant expression because it should
not depend on the guest page size.
Signed-off-by: Maya Nakamura
---
drivers/input/serio/hyperv-keyboard.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/input/serio/hyperv-keyboard.c
b/driver
On Fri, May 31, 2019 at 05:56:39PM +0800, Jason Wang wrote:
> On 2019/5/31 下午4:18, Stefano Garzarella wrote:
> > On Thu, May 30, 2019 at 07:59:14PM +0800, Jason Wang wrote:
> > > On 2019/5/30 下午6:10, Stefano Garzarella wrote:
> > > > On Thu, May 30, 2019 at 05:46:18PM +0800, Jason Wang wrote:
> > >
On Thu, Jun 06, 2019 at 10:03:15AM +0200, Peter Zijlstra wrote:
> On Wed, Jun 05, 2019 at 01:52:15PM -0700, Linus Torvalds wrote:
> > On Wed, Jun 5, 2019 at 1:19 PM Peter Zijlstra wrote:
> > >
> > > Urgh, that's another things that's been on the TODO list for a long long
> > > time, write code to
On Thursday 06 Jun 2019 at 08:22:04 (+0530), Viresh Kumar wrote:
> On 05-06-19, 10:16, Quentin Perret wrote:
> > Hi Viresh,
> >
> > On Tuesday 04 Jun 2019 at 12:31:52 (+0530), Viresh Kumar wrote:
> > > The same formula to check utilization against capacity (after
> > > considering capacity_margin)
On Thu, 06 Jun 2019, Bjorn Andersson wrote:
> On Wed 05 Jun 22:50 PDT 2019, Lee Jones wrote:
>
> > On Tue, 23 Apr 2019, Jeffrey Hugo wrote:
> >
> > > This adds the initial DT for the Lenovo Miix 630 laptop. Supported
> > > functionality includes USB (host), microSD-card, keyboard, and trackpad.
On 18/04/2019 16:36, Yue Haibing wrote:
> From: YueHaibing
>
> Fix sparse warning:
>
> drivers/phy/ti/phy-am654-serdes.c:250:12: warning:
> symbol 'serdes_am654_xlate' was not declared. Should it be static?
>
> Reported-by: Hulk Robot
> Signed-off-by: YueHaibing
Acked-by: Roger Quadros
On Mon, 2019-06-03 at 12:57 +0200, Matthias Schiffer wrote:
> For some time (050d18d1c651 "ARM: 8650/1: module: handle negative
> R_ARM_PREL31 addends correctly", v4.11+), building a kernel without
> CONFIG_MODULE_UNLOAD would lead to module loads failing on ARM
> systems with
> certain memory layo
> This example really does point out a weakness in the LKMM's handling of
> data races. Herbert's litmus test is a great starting point:
>
>
> C xu
>
> {}
>
> P0(int *a, int *b)
> {
> WRITE_ONCE(*a, 1);
> synchronize_rcu();
> *b = 2;
> }
>
> P1(int *a, int *b)
> {
> r
On Thu, 2019-06-06 at 09:55 +0200, Rolf Eike Beer wrote:
> +CRYPTO_LIBS = $(shell $(PKG_CONFIG) --libs libcrypto 2> /dev/null ||
> -lcrypto)
That's going to run:
$ pkg-config --libs libcrypto || -lcrypto
If libcrypto.pc isn't there, it's going to get this:
-lcrypto: command not found
I thin
Hello!
On 06.06.2019 5:54, Ran Wang wrote:
When DWC3 is set to host mode by programming register DWC3_GCTL, VBUS
(or its control signal) will turn on immediately on related Root Hub
ports. Then the VBUS will be de-asserted for a little while during xhci
reset (conducted by xhci driver) for a li
On 05.06.2019 09:04, Andrey Smirnov wrote:
> Simplify tc_set_video_mode() by replacing explicit shifting using
> macros from . No functional change intended.
>
> Signed-off-by: Andrey Smirnov
> Cc: Archit Taneja
> Cc: Andrzej Hajda
> Cc: Laurent Pinchart
> Cc: Tomi Valkeinen
> Cc: Andrey Gusak
On 05.06.19 23:35, Jeff Kletsky wrote:
> From: Jeff Kletsky
>
> These Paragon chips are very similar to other 1Gb/2Gb chips
> in terms of their layout and command timings.
>
> One notable difference is that "Minimum number of valid blocks"
> (Nvb) is 1003 per Gb, rather than the common 1004. As
Hi,
On Thu, Jun 06, 2019 at 09:33:20AM +0800, anson.hu...@nxp.com wrote:
> From: Anson Huang
>
> Add the clock binding doc for i.MX8MN.
>
> Signed-off-by: Anson Huang
> ---
> Changes since V3:
> - switch binding doc from .txt to .yaml.
> ---
> .../devicetree/bindings/clock/imx8mn-clock.ya
Hi Sergei,
On Thursday, June 06, 2019 16:17 Sergei Shtylyov wrote:
>
> Hello!
>
> On 06.06.2019 5:54, Ran Wang wrote:
>
> > When DWC3 is set to host mode by programming register DWC3_GCTL, VBUS
> > (or its control signal) will turn on immediately on related Root Hub
> > ports. Then the VBUS wil
On Thu, 6 Jun 2019 at 09:49, Quentin Perret wrote:
>
> Hi Vincent,
>
> On Thursday 06 Jun 2019 at 09:05:16 (+0200), Vincent Guittot wrote:
> > Hi Quentin,
> >
> > On Wed, 5 Jun 2019 at 19:21, Quentin Perret wrote:
> > >
> > > On Friday 17 May 2019 at 14:55:19 (-0700), Stephen Boyd wrote:
> > > >
Ravi Bangoria wrote:
Powerpc hw triggers watchpoint before executing the instruction.
To make trigger-after-execute behavior, kernel emulates the
instruction. If the instruction is 'load something into non-
volatile register', exception handler should restore emulated
register state while returni
From: Weihang Li
This patch fixes some coding style issues reported by some static code
analysis tools and code review, such as modify some comments, rename
some variables, log some errors in detail, and fixes some alignment
errors.
BTW, these cleanups do not change the logic of code.
Signed-of
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