Pantelis Antoniou konsulko.com> writes:
...
> +static ssize_t
> +configfs_write_bin_file(struct file *file, const char __user *buf,
> + size_t count, loff_t *ppos)
> +{
...
> + len = simple_write_to_buffer(buffer->bin_buffer,
> + buffer->bin_buffer_size
On Thu, Jun 11, 2015 at 11:43:58AM +0200, Rasmus Villemoes wrote:
> Whatever the "historical reasons" were back around 1996 when this
> comment was added,
>
> git grep -E '\b_(S?SIZE|TIME|CLOCK|PTRDIFF|CADDR)_T\b'
>
> seems to say that they are no longer relevant. Relieve the
> preprocessor fro
On Sat, Jun 13, 2015 at 05:04:28AM +0300, Dmitry Kalinkin wrote:
> On Sat, Jun 13, 2015 at 3:31 AM, Greg Kroah-Hartman
> wrote:
> > On Wed, Jun 10, 2015 at 04:09:19PM +0300, Dmitry Kalinkin wrote:
> >> Also, there are some patches that IMO don't need any special VME
> >> subsystem expertise, namel
On Friday, June 12, 2015 08:01:15 AM Roland Dreier wrote:
> On Thu, Jun 11, 2015 at 1:50 PM, Rafael J. Wysocki wrote:
> > Changing the ordering between those two routines would work around that
> > problem,
> > but in my view that wouldn't be a proper fix. In fact, the role of
> > reserve_range
> On 13 Jun 2015, at 05:24, Greg Kroah-Hartman
> wrote:
>
> On Sat, Jun 13, 2015 at 05:04:28AM +0300, Dmitry Kalinkin wrote:
>> On Sat, Jun 13, 2015 at 3:31 AM, Greg Kroah-Hartman
>> wrote:
>> I thought 12 was the most harmless out of the whole set. Am I wrong?
>
> You added a new userspace a
On 6/11/15 10:35 PM, Wang Nan wrote:
# Path to clang. If omit, search it from $PATH.
clang-path = "/path/to/clang"
I think this bit and search_program() from the next patch is
overly flexible. It's always delicate to search file paths.
Unless this is really needed, I would drop
bpf_trace_printk() is a helper function used to debug eBPF programs.
Let socket and TC programs use it as well.
Note, it's DEBUG ONLY helper. If it's used in the program,
the kernel will print warning banner to make sure users don't use
it in production.
Signed-off-by: Alexei Starovoitov
---
v1->
v1->v2: switched to init_user_ns from current_user_ns as suggested by Andy
Introduce new helpers to access 'struct task_struct'->pid, tgid, uid, gid, comm
fields in tracing and networking.
Share bpf_trace_printk() and bpf_get_smp_processor_id() helpers between
tracing and networking.
Alexei Star
It's useful to do per-cpu histograms.
Suggested-by: Daniel Wagner
Signed-off-by: Alexei Starovoitov
---
v1->v2: no changes
kernel/trace/bpf_trace.c |2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/trace/bpf_trace.c b/kernel/trace/bpf_trace.c
index 4f9b5d41869b..88a041adee90 1006
Hi,
On Fri, Jun 12, 2015 at 03:25:51PM +0300, Anda-Maria Nicolae wrote:
> The result of container_of macro cannot be NULL, so there is no need to
> check whether info is NULL.
Thanks, queued for 4.2.
-- Sebastian
signature.asc
Description: Digital signature
eBPF programs attached to kprobes need to filter based on
current->pid, uid and other fields, so introduce helper functions:
u64 bpf_get_current_pid_tgid(void)
Return: current->tgid << 32 | current->pid
u64 bpf_get_current_uid_gid(void)
Return: current_gid << 32 | current_uid
bpf_get_current_com
发自我的 iPhone
> 在 2015年6月13日，上午10:31，Alexei Starovoitov 写道：
>
>> On 6/11/15 10:35 PM, Wang Nan wrote:
>> # Path to clang. If omit, search it from $PATH.
>>clang-path = "/path/to/clang"
>
> I think this bit and search_program() from the next patch is
> overly flexible. It's always de
On 6/12/15 12:27 PM, Arnaldo Carvalho de Melo wrote:
Alexei, is this already possible with eBPF?
I want to decode that attr_uptr thing :-)
yes, it's already possible :)
Here is working example from our experimental c+python thingy:
#!/usr/bin/env python
from bpf import BPF
from subprocess imp
On 6/12/15 7:52 PM, pi3orama wrote:
发自我的 iPhone
在 2015年6月13日，上午10:31，Alexei Starovoitov 写道：
On 6/11/15 10:35 PM, Wang Nan wrote:
# Path to clang. If omit, search it from $PATH.
clang-path = "/path/to/clang"
I think this bit and search_program() from the next patch is
overly
On 06/11/2015 10:21 AM, Will Deacon wrote:
Hi Waiman,
On Tue, Jun 09, 2015 at 04:19:12PM +0100, Waiman Long wrote:
The qrwlock is fair in the process context, but becoming unfair when
in the interrupt context to support use cases like the tasklist_lock.
However, the unfair code in the interrupt
On Fri, Jun 12, 2015 at 12:12:47AM +0900, Seunghun Lee wrote:
> Encryption mode is unsupported when blocksize != pagesize.
>
> Signed-off-by: Seunghun Lee
This only checks for blocksize != pagesize in the case where the test
dummy encryption mount option is given. We need to check also for the
发自我的 iPhone
> 在 2015年6月13日，上午11:03，Alexei Starovoitov 写道：
>
>> On 6/12/15 7:52 PM, pi3orama wrote:
>>
>>
>> 发自我的 iPhone
>>
在 2015年6月13日，上午10:31，Alexei Starovoitov 写道：
On 6/11/15 10:35 PM, Wang Nan wrote:
# Path to clang. If omit, search it from $PATH.
c
Dudley,
On Fri, Jun 12, 2015 at 02:56:37PM +0800, Dudley Du wrote:
> Add of_match_device machanism support for Cypress trackpad device, and
> add the sample description document of adding the trackpad device node in DT.
> TEST=test on Chromebook.
>
> Signed-off-by: Dudley Du
> ---
> .../devicet
On 6/12/15 4:41 PM, Liang, Kan wrote:
On 6/12/15 2:39 PM, Liang, Kan wrote:
Here are the test results.
Please note that I get "synthesized threads took..." after the test case
exit.
It means both way have the same issue.
Got it. So what you really mean is launching perf on an already runnin
I think you misunderstand partial register stalls. They happen (on some
microarchitectures) when you write part of a register and then use the whole
register.
As you say, we do need the branch anyway, which is a good reason to do it, but
the motivation is wrong.
Sent from my tablet, pardon an
coming back to this ...
On 6/12/15 2:39 PM, Liang, Kan wrote:
Yes, perf always can read proc file. The problem is that the proc file
is huge and keep growing faster than proc reader.
So perf top do loop in perf_event__synthesize_mmap_events until the
test case exit.
I'm confused. How are you g
发自我的 iPhone
> 在 2015年6月13日，上午10:31，Alexei Starovoitov 写道：
>
>> On 6/11/15 10:35 PM, Wang Nan wrote:
>> # Path to clang. If omit, search it from $PATH.
>>clang-path = "/path/to/clang"
>
> I think this bit and search_program() from the next patch is
> overly flexible. It's always de
On Sat, Jun 13, 2015 at 05:30:09AM +0300, Dmitry Kalinkin wrote:
>
> > On 13 Jun 2015, at 05:24, Greg Kroah-Hartman
> > wrote:
> >
> > On Sat, Jun 13, 2015 at 05:04:28AM +0300, Dmitry Kalinkin wrote:
> >> On Sat, Jun 13, 2015 at 3:31 AM, Greg Kroah-Hartman
> >> wrote:
> >> I thought 12 was the
On 6/12/15 9:11 PM, pi3orama wrote:
发自我的 iPhone
在 2015年6月13日，上午10:31，Alexei Starovoitov 写道：
On 6/11/15 10:35 PM, Wang Nan wrote:
# Path to clang. If omit, search it from $PATH.
clang-path = "/path/to/clang"
I think this bit and search_program() from the next patch is
overly
The '__init aesni_init()' function calls the '__exit crypto_fpu_exit()'
function directly. Since they are in different sections, this generates
a warning.
make CONFIG_DEBUG_SECTION_MISMATCH=y
...
WARNING: arch/x86/crypto/aesni-intel.o(.init.text+0x12b): Section
mismatch in reference from
From: Alexander Usyskin
Fix the hbm power gating state machine so it will wait till it receives
confirmation interrupt for the PG_ISOLATION_EXIT message.
In process of the suspend flow the devices first have to exit from the
power gating state (runtime pm resume).
If we do not handle the confirm
My name is Gatan Magsino, I work with Mediterranean Bank in Malta. Can i trust
you with a business worth 8.3 million USD? Please reply ONLY to my private
email: magsin...@yahoo.com.hk for more information.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of
W dniu 12.06.2015 o 19:06, Hyungwon Hwang pisze:
> After the commit abc0b1447d4974963548777a5ba4a4457c82c426
> ("drm: Perform basic sanity checks on probed modes"), proper
> clock-frequency becomes mandatory for validating the mode of panel.
> The display does not work if there is no mode validated
* H. Peter Anvin wrote:
> I think you misunderstand partial register stalls. They happen (on some
> microarchitectures) when you write part of a register and then use the whole
> register.
Yes, there's no partial register stall in this or later code handling these
values.
> > "setbe %al" i
Dudley,
Just noticed a few spelling errors...
On Fri, Jun 12, 2015 at 02:56:32PM +0800, Dudley Du wrote:
> Change strings 'gen5' to 'pip' for all macros, varibales and functions when
sp: ^
> they are shared to be used in for gen5 and gen6 modu
* Andy Lutomirski wrote:
> On Jun 12, 2015 12:59 AM, "Jan Beulich" wrote:
> >
> > >>> On 12.06.15 at 01:23, wrote:
> > > There are two usages on MTRRs:
> > > 1) MTRR entries set by firmware
> > > 2) MTRR entries set by OS drivers
> > >
> > > We can obsolete 2), but we have no control over 1)
* Denys Vlasenko wrote:
> The test is fairly simplistic: it checks that all registers
> are preserved across 32-bit syscall via VDSO.
>
> Run-tested:
>
> $ ./test_syscall_vdso_32
> [RUN] Executing 6-argument 32-bit syscall via VDSO
> [Ok] Arguments are preserved across syscall
> [RUN] Executi
Below is the modification this version:
1. remove the union structure declaration and use the buffer and offset to
manupulate data
2. remove redundant comments and debug messages
3. remove useless include files
4. modify some inproper messages
5. have a reliable value for the checksum delay
6. mod
On Tue, Jun 09, 2015 at 12:21:43PM +0200, Noralf Trønnes wrote:
> The Raspberry Pi has changed how it's firmware detects a poweroff
trivial typo, should be "its"
.. just in case this can be fixed before it lands in a tree.
Jeff
--
To unsubscribe from this li
* Oleg Nesterov wrote:
> On 06/11, Ingo Molnar wrote:
> >
> > +void arch_pgd_init_late(struct mm_struct *mm, pgd_t *pgd)
> > +{
> > + /*
> > +* This is called after a new MM has been made visible
> > +* in fork() or exec().
> > +*
> > +* This barrier makes sure the MM is visibl
Hi,
as David Woodhouse pointed out, my fixes and cleanups for
the original patch-set turned out to be a complete rewrite.
So to have a cleaner history of the feature and to make
backporting easier, here is a rewrite of my changes based on
v4.1-rc7.
Some additional issues have been fixed by this r
From: Joerg Roedel
For all the copy-translation code to run, we have to keep
translation enabled in intel_iommu_init(). So remove the
code disabling it.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 7 ---
1 file changed, 7 deletions(-)
diff --git a/drivers/iommu/intel-iom
From: Joerg Roedel
When we copied over context tables from an old kernel, we
need to defer assignment of devices to domains until the
device driver takes over. So skip this part of
initialization when we copied over translation tables from
the old kernel.
Signed-off-by: Joerg Roedel
---
driver
From: Joerg Roedel
QI needs to be available when we write the root entry into
hardware because flushes might be necessary after this.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c
From: Joerg Roedel
Walk over the copied entries and mark the present ones as
allocated.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 10 ++
1 file changed, 10 insertions(+)
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remapping.c
From: Joerg Roedel
Keep it enabled in kdump kernel to guarantee interrupt
delivery.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 6 ++
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c
b/drivers/iommu/intel_irq_remap
From: Joerg Roedel
Move it to this function for now, so that the copy routines
for irq remapping take no effect yet.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/iommu/intel_irq_remapping.c
From: Joerg Roedel
We can't change the RTT bit when translation is enabled, so
don't copy translation tables when we would change the bit
with our new root entry.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 12 +++-
1 file changed, 11 insertions(+), 1 deletion(-)
dif
From: Joerg Roedel
Do not touch the TE bit unless we know translation is
disabled.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index b47def6..ad72c6d
From: Joerg Roedel
This way we can give the hardware the new IR table right
after it has been allocated and initialized.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 19 ++-
1 file changed, 14 insertions(+), 5 deletions(-)
diff --git a/drivers/iommu/in
From: Joerg Roedel
When we are booting into a kdump kernel and find IR enabled,
copy over the contents of the previous IR table so that
spurious interrupts will not be target aborted.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 70 +
From: Joerg Roedel
We need this to be detected already when we program the irq
remapping table pointer to hardware.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 47 +++--
1 file changed, 24 insertions(+), 23 deletions(-)
diff --git a/dr
From: Joerg Roedel
Mark the context entries we copied over from the old kernel,
so that we don't detect them as present in other code paths.
This makes sure we safely overwrite old context entries when
a new domain is assigned.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 53 +
From: Joerg Roedel
If we are in a kdump kernel and find translation enabled in
the iommu, try to copy the translation tables from the old
kernel to preserve the mappings until the device driver
takes over.
This supports old and the extended root-entry and
context-table formats.
Signed-off-by: Jo
From: Joerg Roedel
This seperates the allocation of the si_domain from its
assignment to devices. It makes sure that the iommu=pt case
still works in the kdump kernel, when we have to defer the
assignment of devices to domains to device driver
initialization time.
Signed-off-by: Joerg Roedel
--
From: Joerg Roedel
Mark all domain-ids we find as reserved, so that there could
be no collision between domains from the previous kernel and
our domains in the IOMMU TLB.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(
* Oleg Nesterov wrote:
> On 06/13, Oleg Nesterov wrote:
> >
> > Afaics, we need to ensure that:
> >
> > > + if (pgd_val(*pgd_src))
> > > + WRITE_ONCE(*pgd_dst, *pgd_src);
> >
> > either we notice the recent update of this PGD, or (say) the subsequent
> > s
From: Joerg Roedel
QI needs to be enabled when we program the irq remapping
table to hardware in the prepare phase later.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel_irq_remapping.c | 92 ++---
1 file changed, 35 insertions(+), 57 deletions(-)
diff --gi
From: Joerg Roedel
Add code to detect whether translation is already enabled in
the IOMMU. Save this state in a flags field added to
struct intel_iommu.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 19 +++
include/linux/intel-iommu.h | 4
2 files changed,
From: Joerg Roedel
In case there was an old root entry, make our new one
visible immediately after it was allocated.
Signed-off-by: Joerg Roedel
---
drivers/iommu/intel-iommu.c | 10 ++
1 file changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/iommu/intel-iommu.c b/drivers/
From: Joerg Roedel
Give them a common prefix that can be grepped for and
improve the wording here and there.
Signed-off-by: Joerg Roedel
---
drivers/iommu/dmar.c| 28 +++
drivers/iommu/intel-iommu.c | 154 +---
drivers/iommu/intel_ir
* Ingo Molnar wrote:
> * Oleg Nesterov wrote:
>
> > On 06/11, Ingo Molnar wrote:
> > >
> > > +void arch_pgd_init_late(struct mm_struct *mm, pgd_t *pgd)
> > > +{
> > > + /*
> > > + * This is called after a new MM has been made visible
> > > + * in fork() or exec().
> > > + *
> > > + * This
* Oleg Nesterov wrote:
> On 06/11, Ingo Molnar wrote:
> >
> > @@ -1592,6 +1592,22 @@ static struct task_struct *copy_process(unsigned
> > long clone_flags,
> > syscall_tracepoint_update(p);
> > write_unlock_irq(&tasklist_lock);
> >
> > + /*
> > +* If we have a new PGD then initi
Dudley,
A few more spelling errors...
On Fri, Jun 12, 2015 at 02:56:33PM +0800, Dudley Du wrote:
> Based on the cyapa core, add the gen6 trackpad device's basic functions
> supported, so gen6 trackpad device can work with kernel input system.
> And also based on the state parse interface, the cya
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