Hi Tim,
I love your patch! Yet something to improve:
[auto build test ERROR on ljones-mfd/for-mfd-next]
[also build test ERROR on hwmon/hwmon-next linus/master v5.7-rc5 next-20200515]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also
On 5/15/20 4:15 PM, Jason Gunthorpe wrote:
On Wed, May 13, 2020 at 02:45:07PM -0700, Ralph Campbell wrote:
The test driver uses an xa_array to store virtual to physical address
translations for a simulated hardware device. The MMU notifier
invalidation callback is used to keep the table consis
From: Ben Boeckel
This argument was just never documented in the first place.
Signed-off-by: Ben Boeckel
---
Documentation/security/keys/core.rst | 8 ++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/Documentation/security/keys/core.rst
b/Documentation/security/keys/core
From: Ben Boeckel
This is the way the code parses the arguments and libkeyutils calls the
syscall.
Note on the email split: I'm still in the process of migrating emails
for various usages hence the email From mismatch here (I've migrated my
list subscription, but not my general contribution emai
Hi,
Jun Li wrote:
>> -Original Message-
>> From: Felipe Balbi On Behalf Of Felipe Balbi
>> Sent: 2020年5月15日 17:31
>> To: Jun Li
>> Cc: John Stultz ; lkml
>> ; Yu
>> Chen ; Greg Kroah-Hartman ;
>> Rob
>> Herring ; Mark Rutland ; ShuFan Lee
>> ; Heikki Krogerus ;
>> Suzuki K Poulose ; Ch
On Fri, May 15, 2020 at 11:09 AM Johannes Weiner wrote:
>
> On Fri, May 15, 2020 at 10:49:22AM -0700, Shakeel Butt wrote:
> > On Fri, May 15, 2020 at 8:00 AM Roman Gushchin wrote:
> > > On Fri, May 15, 2020 at 06:44:44AM -0700, Shakeel Butt wrote:
> > > > On Fri, May 15, 2020 at 6:24 AM Johannes
On 15/05/2020 23:43, Dave Hansen wrote:
> On 5/15/20 2:33 PM, Yu-cheng Yu wrote:
>> On Fri, 2020-05-15 at 11:39 -0700, Dave Hansen wrote:
>>> On 5/12/20 4:20 PM, Yu-cheng Yu wrote:
>>> Can a binary compiled with CET run without CET?
>> Yes, but a few details:
>>
>> - The shadow stack is transparent
Folks!
This is V6 of the rework series. V5 can be found here:
https://lore.kernel.org/r/20200512210059.056244...@linutronix.de
The V6 leftover series is based on:
git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git entry-base-v6
which is the reworked base series from part 1-4 of t
The first step to get rid of the ENTER/LEAVE_IRQ_STACK ASM macro maze. Use
the new C code helpers to move do_softirq_own_stack() out of ASM code.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 3b8da9f09297..bdf8391b2f95 100644
--- a/arc
xen_failsafe_callback is invoked from XEN for two cases:
1. Fault while reloading DS, ES, FS or GS
2. Fault while executing IRET
#1 retries the IRET after XEN has fixed up the segments.
#2 injects a #GP which kills the task
For #1 there is no reason to go through the full exception return
The hardware latency tracer calls into trace_sched_clock and ends up in
various instrumentable functions which is problemeatic vs. the kprobe
handling especially the text poke machinery. It's invoked from
nmi_enter/exit(), i.e. non-instrumentable code.
Use nmi_enter/exit_notrace() instead. These
The only difference is the name of the per-CPU variable: irq_regs
vs. __irq_regs, but the accessor functions are identical.
Remove the pointless copy and use the generic variant.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/include/asm/irq_regs.h b/arch/x86/include/asm/irq_regs.h
dele
Provide a seperate IDTENTRY macro for device interrupts. Similar to
IDTENTRY_ERRORCODE with the addition of invoking irq_enter/exit_rcu() and
providing the errorcode as a 'u8' argument to the C function, which
truncates the sign extended vector number.
Signed-off-by: Thomas Gleixner
diff --git
Device interrupt handlers and system vector handlers are executed on the
interrupt stack. The stack switch happens in the low level assembly entry
code. This conflicts with the efforts to consolidate the exit code in C to
ensure correctness vs. RCU and tracing.
As there is no way to move #DB awa
The hardware latency tracer calls into timekeeping and ends up in
various instrumentable functions which is problematic vs. the kprobe
handling especially the text poke machinery. It's invoked from
nmi_enter/exit(), i.e. non-instrumentable code.
Split it into two parts:
1) NMI counter, only invo
irq_enter()/exit() include the RCU handling. To properly separate the RCU
handling provide variants which contain only the non-RCU related
functionality.
Signed-off-by: Thomas Gleixner
diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h
index a4c5a1df067e..f6f25fab34cb 100644
--- a/
Convert page fault exceptions to IDTENTRY_RAW:
- Implement the C entry point with DEFINE_IDTENTRY_RAW
- Add the CR2 read into the exception handler
- Add the idtentry_enter/exit_cond_rcu() invocations in
in the regular page fault handler and use the regular
idtentry_enter/exit() for
Convert APIC interrupts to IDTENTRY_SYSVEC
- Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
- Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
- Remove the ASM idtentries in 64bit
- Remove the BUILD_INTERRUPT entries in 32bit
- Remove the old prototypes
No functional change.
Si
The scheduler IPI does not need the full interrupt entry handling logic
when the entry is from kernel mode.
Even if tracing is enabled the only requirement is that RCU is watching and
preempt_count has the hardirq bit on.
The NOHZ tick state does not have to be adjusted. If the tick is not
runn
Replace the extra interrupt handling code and reuse the existing idtentry
machinery. This moves the irq stack switching on 64 bit from ASM to C code;
32bit already does the stack switching in C.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
i
Remove all the code which was there to emit the system vector stubs. All
users are gone.
Move the now unused GET_CR2_INTO macro muck to head_64.S where the last
user is. Fixup the eye hurting comment there while at it.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/calling.h b/arc
Convert KVM specific system vectors to IDTENTRY_SYSVEC*:
The two empty stub handlers which only increment the stats counter do no
need to run on the interrupt stack. Use IDTENTRY_SYSVEC_DIRECT for them.
The wakeup handler does more work and runs on the interrupt stack.
None of these handlers n
Split the implementation of idtentry_enter/exit() out into inline functions
so that variants of idtentry_enter/exit() can be implemented without
duplicating code.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index a1950aa90223..882ada245bd5 1006
No more users.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index dce3ede7207e..fcdb41ac5c2e 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -53,19 +53,6 @@ SYM_CODE_START(native_usergs_sysret64)
SYM_CODE_END(nativ
All exceptions/interrupts return with interrupts disabled now. No point in
doing this in ASM again.
Signed-off-by: Thomas Gleixner
---
arch/x86/entry/entry_32.S | 76 --
1 file changed, 76 deletions(-)
--- a/arch/x86/entry/entry_32.S
+++ b/arch/
Signed-off-by: Thomas Gleixner
---
arch/x86/entry/entry_64.S | 13 -
arch/x86/kernel/nmi.c |3 +++
2 files changed, 3 insertions(+), 13 deletions(-)
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -16,7 +16,6 @@
*
* Some macro usage:
* - SYM_FUNC
To consolidate the interrupt entry/exit code vs. the other exceptions
provide handle_irq() (similar to 32bit) to move the interrupt stack
switching to C code. That allows to consolidate the entry exit handling by
reusing the idtentry machinery both in ASM and C.
Signed-off-by: Thomas Gleixner
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 7292525e2557..f213d573038e 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -370,102 +370,6 @@ SYM_CODE_END(ret_from_fork)
#endif
.endm
-/*
- * Enters the IRQ sta
Since INT3/#BP no longer runs on an IST, this workaround is no longer
required.
Tested by running lockdep+ftrace as described in the initial commit:
5963e317b1e9 ("ftrace/x86: Do not change stacks in DEBUG when calling
lockdep")
Signed-off-by: Peter Zijlstra (Intel)
Signed-off-by: Thomas G
The ASM users are gone. All callers are local.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/common.c b/arch/x86/entry/common.c
index 72588f1a45a2..a0772b0d6bc2 100644
--- a/arch/x86/entry/common.c
+++ b/arch/x86/entry/common.c
@@ -54,7 +54,7 @@
* 2) Invoke context tracking if e
Provide a IDTENTRY variant for system vectors to consolidate the different
mechanisms to emit the ASM stubs for 32 an 64 bit.
On 64bit this also moves the stack switching from ASM to C code. 32bit will
excute the system vectors w/o stack switching as before. As some of the
system vector handlers
Now that all exceptions are converted over the sane flag is not longer
needed. Also the vector argument of idtentry_body on 64 bit is pointless
now.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index 3c3ca6fbe58e..dd8064ffdf12 100644
--- a/a
No more users.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_32.S b/arch/x86/entry/entry_32.S
index 65fd41fe77d9..c6e146b71de5 100644
--- a/arch/x86/entry/entry_32.S
+++ b/arch/x86/entry/entry_32.S
@@ -1394,27 +1394,6 @@ BUILD_INTERRUPT3(hv_stimer0_callback_vector,
HYPERV_S
Convert various system vectors to IDTENTRY_SYSVEC
- Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
- Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
- Remove the ASM idtentries in 64bit
- Remove the BUILD_INTERRUPT entries in 32bit
- Remove the old prototypes
No functional chan
All C functions which do not have an error code have been converted to the
new IDTENTRY interface which does not expect an error code in the
arguments. Spare the XORL.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 3eddf7c6c530..1d700bd
Timestamping in the hardware latency detector uses sched_clock() underneath
and depends on CONFIG_GENERIC_SCHED_CLOCK=n because sched clocks from that
subsystem are not NMI safe.
ktime_get_mono_fast_ns() is NMI safe and available on all architectures.
Replace the time getter, get rid of the CONFI
Convert the last oldstyle defined vector to IDTENTRY_SYSVEC
- Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
- Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
- Remove the ASM idtentries in 64bit
- Remove the BUILD_INTERRUPT entries in 32bit
- Remove the old prototypes
Fixup th
Convert the XEN/PV hypercall to IDTENTRY:
- Emit the ASM stub with DECLARE_IDTENTRY
- Remove the ASM idtentry in 64bit
- Remove the open coded ASM entry code in 32bit
- Remove the old prototypes
The handler stubs need to stay in ASM code as it needs corner case handling
and adjustment o
Signed-off-by: Thomas Gleixner
diff --git a/include/linux/hardirq.h b/include/linux/hardirq.h
index f6f25fab34cb..adfd98b8a468 100644
--- a/include/linux/hardirq.h
+++ b/include/linux/hardirq.h
@@ -41,6 +41,17 @@ extern void rcu_nmi_exit(void);
} while (0)
/*
+ * Like __irq_enter() w
Device interrupts which go through do_IRQ() or the spurious interrupt
handler have their separate entry code on 64 bit for no good reason.
Both 32 and 64 bit transport the vector number through ORIG_[RE]AX in
pt_regs. Further the vector number is forced to fit into an u8 and is
complemented and
The pagefault handler cannot use the regular idtentry_enter() because that
invokes rcu_irq_enter() if the pagefault was caused in the kernel. Not a
problem per se, but kernel side page faults can schedule which is not
possible without invoking rcu_irq_exit().
Adding rcu_irq_exit() and a matching
To fully isolate #DB and #BP from instrumentable code it's necessary to
avoid invoking the hardware latency tracer on nmi_enter/exit().
Provide nmi_enter/exit() variants which are not invoking the hardware
latency tracer. That allows to put calls explicitely into the call sites
outside of the kp
Convert SMP system vectors to IDTENTRY_SYSVEC
- Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
- Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
- Remove the ASM idtentries in 64bit
- Remove the BUILD_INTERRUPT entries in 32bit
- Remove the old prototypes
No functional change.
No more users.
Signed-off-by: Thomas Gleixner
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S
index 55f612032793..e908f1440f36 100644
--- a/arch/x86/entry/entry_64.S
+++ b/arch/x86/entry/entry_64.S
@@ -1356,15 +1356,6 @@ SYM_CODE_START_LOCAL(error_entry)
jmp .Ler
Convert various hypervisor vectors to IDTENTRY_SYSVEC
- Implement the C entry point with DEFINE_IDTENTRY_SYSVEC
- Emit the ASM stub with DECLARE_IDTENTRY_SYSVEC
- Remove the ASM idtentries in 64bit
- Remove the BUILD_INTERRUPT entries in 32bit
- Remove the old prototypes
No functional
On Fri, May 15, 2020 at 11:09 AM Roman Gushchin wrote:
>
> On Fri, May 15, 2020 at 10:49:22AM -0700, Shakeel Butt wrote:
> > On Fri, May 15, 2020 at 8:00 AM Roman Gushchin wrote:
> > >
> > > On Fri, May 15, 2020 at 06:44:44AM -0700, Shakeel Butt wrote:
> > > > On Fri, May 15, 2020 at 6:24 AM Joha
On 5/15/20 4:29 PM, Yu-cheng Yu wrote:
> On Fri, 2020-05-15 at 15:43 -0700, Dave Hansen wrote:
>> Basically, if there ends up being a bug in an app that violates the
>> shadow stack rules, the app is broken, period. The only recourse is to
>> have the kernel disable CET and reboot.
>>
>> Is that r
On Thu, May 14, 2020 at 03:04:24PM +0800, Huang Ying wrote:
> And the pmbench score increases 15.9%.
What metric is that, and how long did you run the benchmark for?
Given that this thing is probabilistic, did you notice much variance from run
to run?
> diff --git a/mm/swapfile.c b/mm/swapfile.c
On 5/13/20 11:01 PM, Lance Digby wrote:
> The NON_EXISTENT_LUN error can be written without an error condition
> on the initiator responsible. Adding the initiatorname to this message
> will reduce the effort required to fix this when many initiators are
> supported by a target.
>
> Signed-off-b
This includes the thread group leader ID in the seccomp_notif. This is
immediately useful for opening up a pidfd for the group leader, as
pidfds only work on group leaders.
Previously, it was considered to include an actual pidfd in the
seccomp_notif structure[1], but it was suggested to avoid pro
On 15/05/20 19:41, Paolo Bonzini wrote:
> Split out filling svm->vmcb.save and svm->vmcb.control before VMRUN.
> Only the latter will be useful when restoring nested SVM state.
More precisely: when restoring nested SVM state, svm->vmcb.save will
only have to be filled if the nested_run_pending fla
> From: Raj, Ashok
> Sent: Friday, May 15, 2020 11:20 PM
>
> On Fri, May 15, 2020 at 12:39:14AM -0700, Tian, Kevin wrote:
> > Hi, Alex,
> >
> > When working on an updated version Yi and I found an design open
> > which needs your guidance.
> >
> > In concept nested translation can be incarnated a
On 16/05/20 01:09, Krish Sadhukhan wrote:
>>
>> }
>> +static void load_nested_vmcb_control(struct vcpu_svm *svm, struct
>> vmcb *nested_vmcb)
>
>
> This function only separates a subset of the controls. If the purpose of
> the function is to separate only the controls that are related to
> mi
From: Nathan Chancellor
Date: Fri, 15 May 2020 15:33:18 -0700
> When building with Clang:
>
> In file included from drivers/net/ethernet/ti/am65-cpsw-ethtool.c:15:
> drivers/net/ethernet/ti/am65-cpts.h:58:12: warning: unused function
> 'am65_cpts_ns_gettime' [-Wunused-function]
> static s64 am65
The mm-of-the-moment snapshot 2020-05-15-16-29 has been uploaded to
http://www.ozlabs.org/~akpm/mmotm/
mmotm-readme.txt says
README for mm-of-the-moment:
http://www.ozlabs.org/~akpm/mmotm/
This is a snapshot of my -mm patch queue. Uploaded at random hopefully
more than once a week.
You wi
On Fri, 2020-05-15 at 15:43 -0700, Dave Hansen wrote:
> On 5/15/20 2:33 PM, Yu-cheng Yu wrote:
> > On Fri, 2020-05-15 at 11:39 -0700, Dave Hansen wrote:
> > > On 5/12/20 4:20 PM, Yu-cheng Yu wrote:
> > > Can a binary compiled with CET run without CET?
> >
> > Yes, but a few details:
> >
> > - The
> From: Alex Williamson
> Sent: Saturday, May 16, 2020 1:59 AM
>
> On Fri, 15 May 2020 07:39:14 +
> "Tian, Kevin" wrote:
>
> > Hi, Alex,
> >
> > When working on an updated version Yi and I found an design open
> > which needs your guidance.
> >
> > In concept nested translation can be incar
On Thu, May 14, 2020 at 12:47 PM Alexei Starovoitov
wrote:
>
> On Thu, May 14, 2020 at 12:43 PM James Morris
> wrote:
> >
> > On Wed, 13 May 2020, Alexei Starovoitov wrote:
> >
> > > James,
> > >
> > > since you took the previous similar patch are you going to pick this
> > > one up as well?
> >
Hi Luis,
On 2020-05-15 1:47 p.m., Luis Chamberlain wrote:
On Wed, May 13, 2020 at 12:23:59PM -0400, Mimi Zohar wrote:
Hi Scott,
On Thu, 2020-05-07 at 17:27 -0700, Scott Branden wrote:
Please consider this version series ready for upstream acceptance.
This patch series adds partial read suppo
Hi Alan & Colin：
On 2020/5/16 1:21, Alan Stern wrote:
On Fri, May 15, 2020 at 05:54:53PM +0100, Colin King wrote:
From: Colin Ian King
The comparison of hcd->irq to less than zero for an error check will
never be true because hcd->irq is an unsigned int. Fix this by
assigning the int retval
On Sat, May 16, 2020 at 12:23:31AM +0200, Paolo Bonzini wrote:
> On 15/05/20 22:43, Sean Christopherson wrote:
> > On Fri, May 15, 2020 at 09:18:07PM +0200, Paolo Bonzini wrote:
> >> On 15/05/20 20:46, Sean Christopherson wrote:
> >>> Why even bother using 'struct kvm_vcpu_pv_apf_data' for the #PF
On Wed, May 13, 2020 at 02:45:07PM -0700, Ralph Campbell wrote:
> The test driver uses an xa_array to store virtual to physical address
> translations for a simulated hardware device. The MMU notifier
> invalidation callback is used to keep the table consistent with the CPU
> page table and is freq
On 5/15/20 10:41 AM, Paolo Bonzini wrote:
When restoring SVM nested state, the control state will be stored already
in svm->nested by KVM_SET_NESTED_STATE. We will not need to fish it out of
L1's VMCB. Pull everything into a separate function so that it is
documented which fields are needed.
On 5/15/20 11:18 PM, arnaldo.m...@gmail.com wrote:
[...]
Andrii/Alexei/Daniel, what do you think about me merging these fixes
in my
perf-tools-next branch?
I'm ok with the idea, but it's up to maintainers to coordinate this :)
Good to know, do I'll take all patches except the ones touching
On Fri, May 15, 2020 at 10:55:50AM -0700, Andi Kleen wrote:
Indeed, we've seen a few hacks that basically just enable FSGSBASE:
- https://github.com/oscarlab/graphene-sgx-driver
- https://github.com/occlum/enable_rdfsbase
And would very much like to get rid of them...
These are insecure and o
Use IS_ERR() and PTR_ERR() instead of PTR_ERR_OR_ZERO() to
simplify code, avoid redundant judgements.
Signed-off-by: Zhang Shengju
Signed-off-by: Tang Bin
Reviewed-by: Leon Romanovsky
---
Changes from v1
- fix the commit message for typo.
---
drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.
On Fri, May 15, 2020 at 3:41 PM Jiri Olsa wrote:
>
> On Fri, May 15, 2020 at 09:50:07AM -0700, Ian Rogers wrote:
>
> SNIP
>
> > diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
> > index 8b4ce704a68d..f64ab91c432b 100644
> > --- a/tools/perf/util/expr.c
> > +++ b/tools/perf/util/expr.c
Hi Saeed：
On 2020/5/16 6:28, Saeed Mahameed wrote:
On Wed, 2020-05-13 at 17:48 +0800, Tang Bin wrote:
Hi David:
On 2020/5/8 4:18, David Miller wrote:
From: Tang Bin
Date: Thu, 7 May 2020 19:50:10 +0800
Use IS_ERR() and PTR_ERR() instead of PTR_ZRR_OR_ZERO()
On 5/15/20 2:33 PM, Yu-cheng Yu wrote:
> On Fri, 2020-05-15 at 11:39 -0700, Dave Hansen wrote:
>> On 5/12/20 4:20 PM, Yu-cheng Yu wrote:
>> Can a binary compiled with CET run without CET?
>
> Yes, but a few details:
>
> - The shadow stack is transparent to the application. A CET application does
On Fri, May 15, 2020 at 09:50:07AM -0700, Ian Rogers wrote:
SNIP
> diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c
> index 8b4ce704a68d..f64ab91c432b 100644
> --- a/tools/perf/util/expr.c
> +++ b/tools/perf/util/expr.c
> @@ -4,25 +4,76 @@
> #include "expr.h"
> #include "expr-bison.
On Fri, May 15, 2020 at 02:35:43PM -0700, Ian Rogers wrote:
> On Fri, May 15, 2020 at 12:41 PM Jiri Olsa wrote:
> >
> > On Fri, May 15, 2020 at 09:50:07AM -0700, Ian Rogers wrote:
> >
> > SNIP
> >
> > > diff --git a/tools/perf/util/metricgroup.c b/tools/perf/util/metricgroup.c
> > > index b071df37
When building with Clang:
In file included from drivers/net/ethernet/ti/am65-cpsw-ethtool.c:15:
drivers/net/ethernet/ti/am65-cpts.h:58:12: warning: unused function
'am65_cpts_ns_gettime' [-Wunused-function]
static s64 am65_cpts_ns_gettime(struct am65_cpts *cpts)
^
drivers/net/ethernet/t
Dear Friend,
I'm Mr. Scott Donald a Successful business Man. dealing with
Exportation, I got your email contact through search to let you know
my Ugly Situation Am a dying Man here in California Los Angeles
Hospital Bed in (USA), I Lost my Wife and my only Daughter for Corona
virus and my Doctor sa
On Wed, 2020-05-13 at 17:48 +0800, Tang Bin wrote:
> Hi David:
>
> On 2020/5/8 4:18, David Miller wrote:
> > From: Tang Bin
> > Date: Thu, 7 May 2020 19:50:10 +0800
> >
> > > Use IS_ERR() and PTR_ERR() instead of PTR_ZRR_OR_ZERO()
^^^ typo
> > > t
Hi,
On 15 May 2020, at 14:04, Bjorn Helgaas wrote:
On Fri, May 15, 2020 at 10:55:28AM -0700, Sean V Kelley wrote:
Compute eXpress Link is a new CPU interconnect created with
workload accelerators in mind. The interconnect relies on PCIe
Electrical
and Physical interconnect for communication.
Stephen Smalley wrote:
> > I can go back to the enum patch for the moment if you and Casey can put up
> > with that for the moment?
>
> Yes, let's do that.
Okay. I'll use the attached. I've added a note into the commit message to
indicate what should be done in future. I won't put the other
On 15/05/20 22:43, Sean Christopherson wrote:
> On Fri, May 15, 2020 at 09:18:07PM +0200, Paolo Bonzini wrote:
>> On 15/05/20 20:46, Sean Christopherson wrote:
>>> Why even bother using 'struct kvm_vcpu_pv_apf_data' for the #PF case? VMX
>>> only requires error_code[31:16]==0 and SVM doesn't vet i
Quoth the man page:
```
If the tracee was restarted by PTRACE_SYSCALL or PTRACE_SYSEMU, the
tracee enters syscall-enter-stop just prior to entering any system
call (which will not be executed if the restart was using
PTRACE_SYSEMU, regardless of any change made to regist
Dear Friend,
I'm Mr. Scott Donald a Successful business Man. dealing with
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On Thu, 14 May 2020 15:04:24 +0800 Huang Ying wrote:
> In some swap scalability test, it is found that there are heavy lock
> contention on swap cache even if we have split one swap cache radix
> tree per swap device to one swap cache radix tree every 64 MB trunk in
> commit 4b3ef9daa4fc ("mm/swa
Allow use of hashmap in perf. Modify perf's check-headers.sh script to
check that the files are kept in sync, in the same way kernel headers are
checked. This will warn if they are out of sync at the start of a perf
build.
Acked-by: Andrii Nakryiko
Signed-off-by: Ian Rogers
---
tools/perf/check
From: Andrii Nakryiko
Fix memory leak in hashmap_clear() not freeing hashmap_entry structs for each
of the remaining entries. Also NULL-out bucket list to prevent possible
double-free between hashmap__clear() and hashmap__free().
Running test_progs-asan flavor clearly showed this problem.
Repor
Perf's expr code currently builds an array of strings then removes
duplicates. The array is larger than necessary and has recently been
increased in size. When this was done it was commented that a hashmap
would be preferable.
libbpf has a hashmap but libbpf isn't currently required to build
perf.
Now subtests can inform why a test was skipped. The upcoming patch
improvint PMU event metric testing will use it.
Signed-off-by: Ian Rogers
Cc: Adrian Hunter
Cc: Alexander Shishkin
Cc: Andi Kleen
Cc: Jin Yao
Cc: Jiri Olsa
Cc: John Garry
Cc: Kajol Jain
Cc: Kan Liang
Cc: Leo Yan
Cc: Mark
Fixes the following warnings:
hashmap.c: In function ‘hashmap__clear’:
hashmap.h:150:20: error: comparison of integer expressions of different
signedness: ‘int’ and ‘size_t’ {aka ‘long unsigned int’} [-Werror=sign-compare]
150 | for (bkt = 0; bkt < map->cap; bkt++)\
hashmap.c: In func
Remove #include of libbpf_internal.h that is unused.
Discussed in this thread:
https://lore.kernel.org/lkml/caef4bzzrmieds_8r8g4vaaewvjzpb4xylnpf0x2vny8otzk...@mail.gmail.com/
Acked-by: Andrii Nakryiko
Signed-off-by: Ian Rogers
---
tools/lib/bpf/hashmap.h | 1 -
1 file changed, 1 deletion(-)
d
Break pmu-events test into 2 and add a test to verify that all pmu
metric expressions simply parse. Try to parse all metric ids/events,
skip/warn if metrics for the current architecture fail to parse. To
support warning for a skip, and an ability for a subtest to describe why
it skips.
Tested on p
Use a hashmap between a char* string and a double* value. While bpf's
hashmap entries are size_t in size, we can't guarantee sizeof(size_t) >=
sizeof(double). Avoid a memory allocation when gathering ids by making 0.0
a special value encoded as NULL.
Original map suggestion by Andi Kleen:
https://
On 5/12/20 11:11 AM, Mike Kravetz wrote:
> On 5/12/20 8:04 AM, Miklos Szeredi wrote:
>> On Tue, Apr 7, 2020 at 12:06 AM Mike Kravetz wrote:
>>> On 4/5/20 8:06 PM, syzbot wrote:
>>>
>>> The routine is_file_hugepages() is just comparing the file ops to huegtlbfs:
>>>
>>> if (file->f_op == &h
On Fri, May 15, 2020 at 09:45:30PM +, Christoph Lameter wrote:
> On Tue, 12 May 2020, Roman Gushchin wrote:
>
> > > Add it to the metadata at the end of the object. Like the debugging
> > > information or the pointer for RCU freeing.
> >
> > Enabling debugging metadata currently disables the c
On Fri, May 15, 2020 at 12:39 PM Andrii Nakryiko
wrote:
>
> On Fri, May 15, 2020 at 9:51 AM Ian Rogers wrote:
> >
> > Use a hashmap between a char* string and a double* value. While bpf's
> > hashmap entries are size_t in size, we can't guarantee sizeof(size_t) >=
> > sizeof(double). Avoid a memo
On Tue, May 12, 2020 at 06:56:45PM -0400, Johannes Weiner wrote:
> On Thu, May 07, 2020 at 03:26:31PM -0700, Roman Gushchin wrote:
> > On Thu, May 07, 2020 at 05:03:14PM -0400, Johannes Weiner wrote:
> > > On Wed, Apr 22, 2020 at 01:46:55PM -0700, Roman Gushchin wrote:
> > > > --- a/mm/memcontrol.c
This patch modifies the rapl_model struct to include architecture specific
knowledge to Intel specific structure, and in particular the MSR for
POWER_UNIT and the rapl_msrs array.
No functional changes.
Signed-off-by: Stephane Eranian
---
arch/x86/events/rapl.c | 29 +++-
This patch enables AMD Fam17h RAPL support for the Package level metric.
The support is as per AMD Fam17h Model31h (Zen2) and model 00-ffh (Zen1) PPR.
The same output is available via the energy-pkg pseudo event:
$ perf stat -a -I 1000 --per-socket -e power/energy-pkg/
Signed-off-by: Stephane Er
To prepare for support of both Intel and AMD RAPL.
Move rapl.c to arch/x86/events. Rename config option.
Fixup header paths.
Signed-off-by: Stephane Eranian
---
arch/x86/events/Kconfig| 8
arch/x86/events/Makefile | 1 +
arch/x86/events/intel/Makefile | 2 --
a
This patch series adds support for AMD Fam17h RAPL counters. As per
AMD PPR, Fam17h support Package RAPL counters to monitor power usage.
The RAPL counter operates as with Intel RAPL. As such, it is beneficial
to share the code.
The series first moves the rapl.c file to common perf_events x86 and
From: "Daniel W. S. Almeida"
Implement a S302M encoder to make it possible to insert PCM audio data
in the generated MPEG Transport Stream.
This shall enable passing an audio signal into userspace so it can be
decoded and played by media software.
Signed-off-by: Daniel W. S. Almeida
---
.../m
On Mon, May 4, 2020 at 9:32 PM Douglas Anderson wrote:
>
> If the rate in our table is _equal_ to the rate we want then it's OK
> to pick it. It doesn't need to be greater than the one we want.
>
> Fixes: a095f15c00e2 ("drm/bridge: add support for sn65dsi86 bridge driver")
> Signed-off-by: Dougla
From: "Daniel W. S. Almeida"
Add a MPEG Transport Stream multiplexer responsible for polling encoders,
interleaving packets, padding the resulting stream with NULL packets if
necessary and then delivering the resulting TS packets to the bridge
driver so it can feed the demux.
This patch includes
From: "Daniel W. S. Almeida"
Implement the PES logic to convert encoder data into MPEG TS packets.
These TS packets can then be fed into a TS multiplexer and eventually
into userspace.
Signed-off-by: Daniel W. S. Almeida
---
.../media/test-drivers/vidtv/vidtv_common.h | 2 +
drivers/media/
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