This warning was there to avoid the use of 0bxxx values
as they are not supported by gcc prior to v4.3
Since commit cafa0010cd51f ("Raise the minimum required gcc
version to 4.6"), it's not an issue anymore and using
such values can increase readability of code.
Signed-off-by: Christophe Leroy
-
On 08/27/18 at 02:28pm, Chao Fan wrote:
> >Is it possible to take num_immovable_mem definition out from #ifdef
> >CONFIG_MEMORY_HOTREMOVE block and check it here like below? This way,
> >one level of indentation can be reduced in the for loop, and code is
> >more readable.
> >
>
> I think there is
Commit 49aa76b16676 ("mtd: rawnand: do not execute nand_scan_ident()
if maxchips is zero") gave a new meaning for calling nand_scan_ident()
with maxchips=0.
It is a special usage for some drivers such as docg4, but actually
the Denali driver may pass maxchips=0 to nand_scan() when the driver
is en
On Wed, Aug 22, 2018 at 07:22:20AM -0700, Tony Lindgren wrote:
> * J, KEERTHY [180822 11:11]:
> > On 8/22/2018 2:13 PM, Johan Hovold wrote:
> > > Yes, and a blacklist would make much more sense for something like this
> > > if where talking about specific boards.
> >
> > Black list is easier here?
On 2018/8/23 1:02, Robin Murphy wrote:
> On 15/08/18 02:28, Zhen Lei wrote:
>> Add a bootup option to make the system manager can choose which mode to
>> be used. The default mode is strict.
>>
>> Signed-off-by: Zhen Lei
>> ---
>> Documentation/admin-guide/kernel-parameters.txt | 13 +
On 08/27/18 at 01:56pm, Baoquan He wrote:
> On 08/07/18 at 02:50pm, Chao Fan wrote:
> > If 'CONFIG_MEMORY_HOTREMOVE' specified and the account of immovable
> If CONFIG_MEMORY_HOTREMOVE is enabled,
> > memory regions is not zero. Calculate the intersection between memory
> > regions from e820/efi m
On 24/08/18 12:20, Chunyan Zhang wrote:
> Host Controller Version 4.10 re-defines SDMA System Address register
> as 32-bit Block Count for v4 mode, and SDMA uses ADMA System
> Address register (05Fh-058h) instead if v4 mode is enabled. Also
> when using 32-bit block count, 16-bit block count regist
Hi,
> Known issues:
>
> - 'stress-ng --ptrace 4' is able to trigger a latency spike of
> several ms. Usually around 2 - 3ms on two different x86_64 boxes I can
> test on. 4.9-rt seems to have the same problem. 4.14-rt and 4.16-rt
> work just fine. Still debugging the issue.
I have a
On Mon, 2018-08-27 at 06:59 +, Christophe Leroy wrote:
> This warning was there to avoid the use of 0bxxx values
> as they are not supported by gcc prior to v4.3
>
> Since commit cafa0010cd51f ("Raise the minimum required gcc
> version to 4.6"), it's not an issue anymore and using
> such value
On Mon, 27 Aug 2018 16:01:41 +0900
Masahiro Yamada wrote:
> Commit 49aa76b16676 ("mtd: rawnand: do not execute nand_scan_ident()
> if maxchips is zero") gave a new meaning for calling nand_scan_ident()
> with maxchips=0.
>
> It is a special usage for some drivers such as docg4, but actually
> th
Hi Masahiro,
Masahiro Yamada wrote on Mon, 27 Aug
2018 16:01:41 +0900:
> Commit 49aa76b16676 ("mtd: rawnand: do not execute nand_scan_ident()
> if maxchips is zero") gave a new meaning for calling nand_scan_ident()
> with maxchips=0.
>
> It is a special usage for some drivers such as docg4, but
On Fri, Aug 17, 2018 at 11:23:17PM +0200, Pierre-Jean Texier wrote:
> The WaRP7 has one mikroBUS socket on the back to plug click boards.
> This patch allows to interact with some of these
> i2c modules (EEPROM, RTC and so on).
>
> Signed-off-by: Pierre-Jean Texier
Applied, thanks.
On Mon, Aug 27, 2018 at 01:01:41PM +0800, Jacek Tomaka wrote:
> Not sure if you are leaning towards removing microcode/version interface
> altogether or you are writing your thoughts to justify merging this patch.
The latter. We cannot *ever* remove sysfs files. Never.
--
Regards/Gruss,
Bori
On 24/08/18 12:20, Chunyan Zhang wrote:
> From: Chunyan Zhang
>
> This patch adds the initial support of Secure Digital Host Controller
> Interface compliant controller found in some latest Spreadtrum chipsets.
> This patch has been tested on the version of SPRD-R11 controller.
>
> R11 is a vari
On Tue, Aug 21, 2018 at 12:07:18AM +0300, Tuomas Tynkkynen wrote:
> Setting a stdout-path in the .dtb is convenient because then the user
> gets a serial console on the RS-232 connector without any extra effort
> of figuring out the relevant 'console=' boot parameter.
>
> Reviewed-by: Fabio Esteva
On Mon, Aug 27, 2018 at 10:21:34AM +1000, Dave Chinner wrote:
> tl; dr: Once you pass a certain point, ramdisks can be *much* slower
> than SSDs on journal intensive workloads like AIM7. Hence it would be
> useful to see if you have the same problems on, say, high
> performance nvme SSDs.
Note tha
Hi Gustavo,
On Thu, 23 Aug 2018 20:09:38 -0500
"Gustavo A. R. Silva" wrote:
> One of the more common cases of allocation size calculations is finding
> the size of a structure that has a zero-sized array at the end, along
> with memory for some number of elements for that array. For example:
>
On Thu, 23 Aug 2018 14:51:26 +0300 Adrian Hunter wrote:
> On 23/08/18 13:09, Jisheng Zhang wrote:
> > When using DMA, if the DMA addr spans 128MB boundary, we have to split
> > the DMA transfer into two so that each one doesn't exceed the boundary.
> >
> > Signed-off-by: Jisheng Zhang
> > ---
>
On Tue, May 29, 2018 at 6:27 AM, Andy Whitcroft wrote:
> On Wed, Mar 07, 2018 at 04:02:45PM -0800, Brian Belleville wrote:
>> The final field of a floppy_struct is the field "name", which is a
>> pointer to a string in kernel memory. The kernel pointer should not be
>> copied to user memory. The F
On Fri 24-08-18 11:08:24, Mike Kravetz wrote:
> On 08/24/2018 01:41 AM, Michal Hocko wrote:
> > On Thu 23-08-18 13:59:16, Mike Kravetz wrote:
> >
> > Acked-by: Michal Hocko
> >
> > One nit below.
> >
> > [...]
> >> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> >> index 3103099f64fd..a73c5728e961 1
On Mon, Aug 27, 2018 at 03:00:08PM +1000, Nicholas Piggin wrote:
> On Fri, 24 Aug 2018 13:39:53 +0200
> Peter Zijlstra wrote:
> > On Fri, Aug 24, 2018 at 01:32:14PM +0200, Peter Zijlstra wrote:
> > > Hurm.. look at commit:
> > >
> > > e77b0852b551 ("mm/mmu_gather: track page size with mmu gath
On Sat, Aug 25, 2018 at 11:50:39AM +0800, Jacek Tomaka wrote:
> /sys/devices/system/cpu/cpuX/microcode
>
> Before:
> -r processor_flags
> -r version
>
> After:
> -r--r--r-- processor_flags
> -r--r--r-- version
>
> Microcode version has been already readable for non root users via
On 27 August 2018 at 15:07, Adrian Hunter wrote:
> On 24/08/18 12:20, Chunyan Zhang wrote:
>> Host Controller Version 4.10 re-defines SDMA System Address register
>> as 32-bit Block Count for v4 mode, and SDMA uses ADMA System
>> Address register (05Fh-058h) instead if v4 mode is enabled. Also
>>
On Fri, Aug 24, 2018 at 05:09:27PM -0400, Vince Weaver wrote:
> On Fri, 24 Aug 2018, Peter Zijlstra wrote:
>
> > > +++ b/include/uapi/linux/perf_event.h
> > > @@ -143,6 +143,8 @@ enum perf_event_sample_format {
> > > PERF_SAMPLE_PHYS_ADDR = 1U << 19,
> > >
> > >
On Fri, Aug 24, 2018 at 04:52:44PM +0100, Will Deacon wrote:
> +static inline unsigned long tlb_get_unmap_granule(struct mmu_gather *tlb)
> +{
> + if (tlb->cleared_ptes)
> + return PAGE_SIZE;
> + if (tlb->cleared_pmds)
> + return PMD_SIZE;
> + if (tlb->cleared_pu
To improve the code readability. Some swap free related functions are
refactored.
This patchset is based on 8/23 HEAD of mmotm tree.
Best Regards,
Huang, Ying
The code path to reclaim the swap entry in free_swap_and_cache() is
almost same as that of __try_to_reclaim_swap(). The largest
difference is just coding style. So the support to the additional
requirement of free_swap_and_cache() is added into
__try_to_reclaim_swap(). free_swap_and_cache() is c
On Wed, Aug 22, 2018 at 01:18:39PM +0200, Alex Gonzalez wrote:
> The ConnectCore 6UL Single Board Computer (SBC) Pro contains the
> ConnectCore 6UL System-On-Module.
>
> Its hardware specifications are:
>
> * 256MB DDR3 memory
> * On module 256MB NAND flash
> * Dual 10/100 Ethernet
> * USB Host a
This is a code cleanup patch without functionality change.
Originally, when __swap_entry_free() is called, and its return value
is 0, free_swap_slot() will always be called to free the swap entry to
the per-CPU pool. So move the call to free_swap_slot() to
__swap_entry_free() to simplify the code
si->swap_map[] of the swap entries in cluster needs to be cleared
during freeing. Previously, this is done in the caller of
swap_free_cluster(). This may cause code duplication (one user now,
will add more users later) and lock/unlock cluster unnecessarily. In
this patch, the clearing code is mo
MIPS already has memblock support and all the memory is already registered
with it.
This patch replaces bootmem memory reservations with memblock ones and
removes the bootmem initialization.
Signed-off-by: Mike Rapoport
---
arch/mips/Kconfig | 1 +
arch/mips/kernel/setup.
On Mon, 27 Aug 2018 09:47:01 +0200
Peter Zijlstra wrote:
> On Mon, Aug 27, 2018 at 03:00:08PM +1000, Nicholas Piggin wrote:
> > On Fri, 24 Aug 2018 13:39:53 +0200
> > Peter Zijlstra wrote:
> > > On Fri, Aug 24, 2018 at 01:32:14PM +0200, Peter Zijlstra wrote:
>
> > > > Hurm.. look at commit:
On Mon, Aug 27, 2018 at 3:52 PM, Borislav Petkov wrote:
> Your From: is Jacek Tomaka and your SOB is different.
> Which one should I use?
Please use my SOB: Jacek Tomaka
> (Having a single email address for both is easier...)
Sorry about the trouble.
Regards.
Jacek Tomaka
On Sun, 26 Aug 2018 20:26:09 -0700
Nadav Amit wrote:
> at 8:03 PM, Masami Hiramatsu wrote:
>
> > On Sun, 26 Aug 2018 11:09:58 +0200
> > Peter Zijlstra wrote:
> >
> >> On Sat, Aug 25, 2018 at 09:21:22PM -0700, Andy Lutomirski wrote:
> >>> I just re-read text_poke(). It's, um, horrible. Not o
On Sat, 18 Aug 2018 17:14:23 +0800
Liu Xiang wrote:
> If the size of spi-nor flash is larger than 16MB, the read_opcode
> is set to SPINOR_OP_READ_1_1_4_4B, and fsl_qspi_get_seqid() will
> return -EINVAL when cmd is SPINOR_OP_READ_1_1_4_4B. This can
> cause read operation fail.
>
> Signed-off-by
On Mon, Aug 27, 2018 at 12:03:05PM +0900, Masami Hiramatsu wrote:
> On Sun, 26 Aug 2018 11:09:58 +0200
> Peter Zijlstra wrote:
> > FWIW, before text_poke_bp(), text_poke() would only be used from
> > stop_machine, so all the other CPUs would be stuck busy-waiting with
> > IRQs disabled. These day
On Mon, Aug 27, 2018 at 06:09:50PM +1000, Benjamin Herrenschmidt wrote:
> Sadly our architecture requires a precise match between the page size
> specified in the tlbie instruction and the entry in the TLB or it won't
> be flushed.
Argh.. OK I see. That is rather unfortunate and does seem to requ
Use devm_kstrdup_const() in the pmc-atom driver. This mostly serves as
an example of how to use this new routine to shrink driver code.
While we're at it: replace a call to kcalloc() with devm_kcalloc().
Signed-off-by: Bartosz Golaszewski
---
drivers/clk/x86/clk-pmc-atom.c | 19
Provide a resource managed version of kstrdup_const(). This variant
internally calls devm_kstrdup() on pointers that are outside of
.rodata section. Also provide a corresponding version of devm_kfree().
Signed-off-by: Bartosz Golaszewski
---
include/linux/device.h | 2 ++
mm/util.c
On 2018/8/23 1:52, Robin Murphy wrote:
> On 15/08/18 02:28, Zhen Lei wrote:
>> To support the non-strict mode, now we only tlbi and sync for the strict
>> mode. But for the non-leaf case, always follow strict mode.
>>
>> Signed-off-by: Zhen Lei
>> ---
>> drivers/iommu/io-pgtable-arm.c | 20 ++
Add of_get_compatible_child() helper that can be used to lookup
compatible child nodes.
Several drivers currently use of_find_compatible_node() to lookup child
nodes while failing to notice that the of_find_ functions search the
entire tree depth-first (from a given start node) and therefore can
m
Use the new of_get_compatible_child() helper to lookup the nfc child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
defe
Use the new of_get_compatible_child() helper to lookup the slot child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
def
Use the new of_get_compatible_child() helper to lookup the mdio-internal
child node instead of using of_find_compatible_node(), which searches
the entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after
Use the new of_get_compatible_child() helper to lookup the legacy
pwrlevels child node instead of using of_find_compatible_node(), which
searches the entire tree from a given start node and thus can return an
unrelated (i.e. non-child) node.
This also addresses a potential use-after-free (e.g. af
Use the new of_get_compatible_child() helper to lookup the nfc child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
defe
When using DMA, if the DMA addr spans 128MB boundary, we have to split
the DMA transfer into two so that each one doesn't exceed the boundary.
patch1 adds adma_table_cnt to struct sdhci_host so that driver can
control the ADMA table count.
patch2 introduces adma_write_desc() hook to struct sdhci_o
Use the new of_get_compatible_child() helper to lookup the usb sibling
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(non-sibling) node.
This also addresses a potential use-after-free (e.g. after probe
defer
Use the new of_get_compatible_child() helper to lookup the sibling
instead of using of_find_compatible_node(), which searches the entire
tree from a given start node and thus can return an unrelated (i.e.
non-sibling) node.
This also addresses a potential use-after-free (e.g. after probe
deferral)
Several drivers currently use of_find_compatible_node() to lookup child
nodes while failing to notice that the of_find_ functions search the
entire tree depth-first (from a given start node) and therefore can
match unrelated nodes.
The fact that these functions also drop a reference to the node th
Use the new of_get_compatible_child() helper to lookup the mdio child
node instead of using of_find_compatible_node(), which searches the
entire tree from a given start node and thus can return an unrelated
(i.e. non-child) node.
This also addresses a potential use-after-free (e.g. after probe
def
On Sun, Aug 26, 2018 at 7:13 PM Linus Torvalds
wrote:
>
> On Sun, Aug 26, 2018 at 2:39 AM Thomas Gleixner wrote:
> >
> > New defines for the compat time* types so they can be shared between 32bit
> > and 64bit builds. Not used yet, but merging them now allows the actual
> > conversions to be merg
This patch adds adma_table_cnt member to struct sdhci_host to give more
flexibility to drivers to control the ADMA table count.
Default value of adma_table_cnt is set to (SDHCI_MAX_SEGS * 2 + 1).
Signed-off-by: Jisheng Zhang
Acked-by: Adrian Hunter
---
drivers/mmc/host/sdhci.c | 17 +--
Add this hook so that it can be overridden with driver specific
implementations. We also let the original sdhci_adma_write_desc()
accept &desc so that the function can set its new value. Then export
the function so that it could be reused by driver's specific
implementations.
Signed-off-by: Jishen
When using DMA, if the DMA addr spans 128MB boundary, we have to split
the DMA transfer into two so that each one doesn't exceed the boundary.
Signed-off-by: Jisheng Zhang
---
drivers/mmc/host/sdhci-of-dwcmshc.c | 41 +
1 file changed, 41 insertions(+)
diff --git a/d
On Thu, Aug 23, 2018 at 07:42:09PM +0300, Alexey Budankov wrote:
>
> The data buffer and accompanying AIO control block are allocated at
> perf_mmap object and the mapped data buffer size is equal to
> the kernel one.
>
> The buffer is then used to preserve profiling data ready for dumping
> a
Hi Johan
On Mon, 27 Aug 2018 10:21:49 +0200
Johan Hovold wrote:
> Use the new of_get_compatible_child() helper to lookup the nfc child
> node instead of using of_find_compatible_node(), which searches the
> entire tree from a given start node and thus can return an unrelated
> (i.e. non-child) n
On Thu, Aug 23, 2018 at 07:42:09PM +0300, Alexey Budankov wrote:
SNIP
> diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
> index fc832676a798..e71d46cb01cc 100644
> --- a/tools/perf/util/mmap.c
> +++ b/tools/perf/util/mmap.c
> @@ -155,6 +155,10 @@ void __weak auxtrace_mmap_params__set
On Thu, 23 Aug 2018 10:16:59 -0400
Tony Krowiak wrote:
> On 08/23/2018 06:25 AM, Cornelia Huck wrote:
> > On Wed, 22 Aug 2018 15:16:19 -0400
> > Tony Krowiak wrote:
> >
> >> One of the things I suggested in a private conversation with Christian
> >> earlier
> >> today was to provide an additio
On Mon, 27 Aug 2018, Arnd Bergmann wrote:
> Only a handful of syscalls actually require that complexity, most of them
> need only two entry points either way (32-bit time, and 64-bit time), the
> question is what we call them. I have a mild preference for the second
> version after the discussion w
Commit-ID: 1ab534e85c93945f7862378d8c8adcf408205b19
Gitweb: https://git.kernel.org/tip/1ab534e85c93945f7862378d8c8adcf408205b19
Author: Andi Kleen
AuthorDate: Fri, 24 Aug 2018 10:03:51 -0700
Committer: Thomas Gleixner
CommitDate: Mon, 27 Aug 2018 10:29:14 +0200
x86/spectre: Add missing
On Thu, Aug 23, 2018 at 07:47:01PM +0300, Alexey Budankov wrote:
SNIP
> diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
> index e71d46cb01cc..c8b921c88a5d 100644
> --- a/tools/perf/util/mmap.c
> +++ b/tools/perf/util/mmap.c
> @@ -292,11 +292,11 @@ int perf_mmap__read_init(struct perf
Commit-ID: e3a5dc08715abba646324fd8456282bd77798e9c
Gitweb: https://git.kernel.org/tip/e3a5dc08715abba646324fd8456282bd77798e9c
Author: Nikolas Nyby
AuthorDate: Sat, 25 Aug 2018 19:10:54 -0400
Committer: Thomas Gleixner
CommitDate: Mon, 27 Aug 2018 10:29:14 +0200
x86/Kconfig: Fix trivi
Commit-ID: cc51e5428ea54f575d49cfcede1d4cb3a72b4ec4
Gitweb: https://git.kernel.org/tip/cc51e5428ea54f575d49cfcede1d4cb3a72b4ec4
Author: Andi Kleen
AuthorDate: Fri, 24 Aug 2018 10:03:50 -0700
Committer: Thomas Gleixner
CommitDate: Mon, 27 Aug 2018 10:29:14 +0200
x86/speculation/l1tf: In
Currently, kmemleak only prints the number of suspected leaks to dmesg
but requires the user to read a debugfs file to get the actual stack
traces of the objects' allocation points. Add an option to print the
full object information to dmesg too. This allows easier integration of
kmemleak into au
On Thu, Aug 23, 2018 at 07:47:01PM +0300, Alexey Budankov wrote:
SNIP
> static int record__mmap_read_evlist(struct record *rec, struct perf_evlist
> *evlist,
> bool overwrite)
> {
> u64 bytes_written = rec->bytes_written;
> - int i;
> - int rc =
If the pin descriptor requested for the physical pin fails then the
descriptor is dereferenced without checking for its validity which
may lead to crash, hence added preventive code to check for NULL
and accordingly dereference.
Signed-off-by: Srikanth K H
---
drivers/pinctrl/pinconf.c | 5 +++--
This patch adds support for the Dialog DA7280 Haptic driver IC.
In this patch set the following is provided:
[PATCH V2 1/3] MAINTAINERS file update for DA7280
[PATCH V2 2/3] DA7280 DT Binding
[PATCH V2 3/3] DA7280 Driver
This patch applies against linux-next and v4.18
Thank you,
Roy Im, Dialog
This patch adds the da7280 bindings doc and driver to the Dialog
Semiconductor support list.
Signed-off-by: Roy Im
---
v5: No changes.
v4: No changes.
v3: No changes.
v2: No changes.
MAINTAINERS |2 ++
1 file changed, 2 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index 544cac8
On Mon, 2018-08-27 at 10:21 +0200, Bartosz Golaszewski wrote:
> Provide a resource managed version of kstrdup_const(). This variant
> internally calls devm_kstrdup() on pointers that are outside of
> .rodata section. Also provide a corresponding version of devm_kfree().
[]
> diff --git a/mm/util.c
Add device tree binding information for DA7280 haptic driver.
Example bindings for DA7280 are added.
Signed-off-by: Roy Im
---
v5: Updated descriptions and fixed errors.
v4: Fixed commit message, properties.
v3: Fixed subject format.
v2: No changes
.../devicetree/bindings/input/dlg,da7280.t
On 17/08/2018 04:25, zhong jiang wrote:
> On 2018/8/14 14:39, Daniel Lezcano wrote:
>> On 09/08/2018 15:40, zhong jiang wrote:
>>> Device node iterators will get the return node. Meawhile, It is
>>> also put the previous device node. An explicit put will cause
>>> a double put.
>> What about:
>>
>>
On Thu, Aug 23, 2018 at 07:47:01PM +0300, Alexey Budankov wrote:
SNIP
>
> static volatile int done;
> @@ -528,13 +530,85 @@ static struct perf_event_header finished_round_event = {
> .type = PERF_RECORD_FINISHED_ROUND,
> };
>
> +static int record__mmap_read_sync(int trace_fd, struct a
Adds support for the Dialog DA7280 LRA/ERM Haptic Driver with
multiple mode and integrated waveform memory and wideband support.
It communicates via an I2C bus to the device.
Signed-off-by: Roy Im
---
v5: Fixed errors in Kconfig file.
v4: Updated code as dt-bindings are changed.
v3: No changes
On Mon, Aug 27, 2018 at 10:28:20AM +0200, Boris Brezillon wrote:
> Hi Johan
>
> On Mon, 27 Aug 2018 10:21:49 +0200
> Johan Hovold wrote:
>
> > Use the new of_get_compatible_child() helper to lookup the nfc child
> > node instead of using of_find_compatible_node(), which searches the
> > entire t
On Mon, 27 Aug 2018 10:44:14 +0200
Johan Hovold wrote:
> On Mon, Aug 27, 2018 at 10:28:20AM +0200, Boris Brezillon wrote:
> > Hi Johan
> >
> > On Mon, 27 Aug 2018 10:21:49 +0200
> > Johan Hovold wrote:
> >
> > > Use the new of_get_compatible_child() helper to lookup the nfc child
> > > node
On Mon, 2018-08-27 at 18:04 +1000, Nicholas Piggin wrote:
> > Yes.. I see that. tlb_remove_check_page_size_change() really is a rather
> > ugly thing, it can cause loads of TLB flushes. Do you really _have_ to
> > do that? The way ARM and x86 work is that using INVLPG in a 4K stride is
> > still co
On Mon, 27 Aug 2018 10:20:45 +0200
Peter Zijlstra wrote:
> On Mon, Aug 27, 2018 at 06:09:50PM +1000, Benjamin Herrenschmidt wrote:
>
> > Sadly our architecture requires a precise match between the page size
> > specified in the tlbie instruction and the entry in the TLB or it won't
> > be flushe
On 2018/8/24 16:22, Jerome Brunet wrote:
> On Fri, 2018-08-24 at 15:36 +0800, Hanjie Lin wrote:
>> From: Yue Wang
>>
>> The Amlogic Meson PCIe host controller is based on the Synopsys DesignWare
>> PCI core. This patch adds documentation for the DT bindings in Meson PCIe
>> controller.
>>
>> Si
On Mon, Aug 27, 2018 at 09:47:01AM +0200, Peter Zijlstra wrote:
> sh is trivial, arm seems doable, with a bit of luck we can do 'rm -rf
> arch/ia64' leaving us with s390.
Is removing ia64 a serious plan? It is the cause for a fair share of
oddities in dma lang, and I did not have much luck gettin
Hi Jiri,
On 27.08.2018 11:28, Jiri Olsa wrote:
> On Thu, Aug 23, 2018 at 07:42:09PM +0300, Alexey Budankov wrote:
>>
>> The data buffer and accompanying AIO control block are allocated at
>> perf_mmap object and the mapped data buffer size is equal to
>> the kernel one.
>>
>> The buffer is then
2018-08-27 10:42 GMT+02:00 Joe Perches :
> On Mon, 2018-08-27 at 10:21 +0200, Bartosz Golaszewski wrote:
>> Provide a resource managed version of kstrdup_const(). This variant
>> internally calls devm_kstrdup() on pointers that are outside of
>> .rodata section. Also provide a corresponding version
On Mon, 27 Aug 2018 18:09:50 +1000
Benjamin Herrenschmidt wrote:
> On Mon, 2018-08-27 at 18:04 +1000, Nicholas Piggin wrote:
> > > Yes.. I see that. tlb_remove_check_page_size_change() really is a rather
> > > ugly thing, it can cause loads of TLB flushes. Do you really _have_ to
> > > do that? T
Hi,
On 27.08.2018 11:33, Jiri Olsa wrote:
> On Thu, Aug 23, 2018 at 07:42:09PM +0300, Alexey Budankov wrote:
>
> SNIP
>
>> diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
>> index fc832676a798..e71d46cb01cc 100644
>> --- a/tools/perf/util/mmap.c
>> +++ b/tools/perf/util/mmap.c
>> @@
On Mon, 27 Aug 2018 00:09:52 +0200,
Colin King wrote:
>
> From: Colin Ian King
>
> Trivial fix to spelling mistake in dev_dbg message and also remove
> extraneous white space and repeated question marks.
>
> Signed-off-by: Colin Ian King
Applied, thanks.
Takashi
On 08/23/2018 04:12 PM, Arnaldo Carvalho de Melo wrote:
> Em Thu, Aug 23, 2018 at 02:29:34PM +0200, Martin Liška escreveu:
>> The patch changes interpretation of:
>> callq *0x8(%rbx)
>>
>> from:
>> 0.26 │ → callq *8
>> to:
>> 0.26 │ → callq *0x8(%rbx)
>>
>> in this can an address is
Memory events depends on PEBs support and access to LDLAT msr,
but we display them in /sys/devices/cpu/events even if the cpu
does not provide those, like for KVM guests.
That brings the false assumption that those events should
be available, while they fail event to open.
Separating the mem-* ev
I recently started a discussion about the need for a proper early device
probing mechanism[1]. One that would be based on real platform drivers
and support both platform data and device tree.
While we're far from reaching any consensus on the implementation, Arnd
suggested that I start off by movi
From: Bartosz Golaszewski
SuperH is the only user of the current implementation of early platform
device support. We want to introduce a more robust approach to early
probing. As the first step - move all the current early platform code
to arch/sh.
In order not to export internal drivers/base fu
From: Bartosz Golaszewski
This driver is no longer used as an early platform driver. Remove the
registration macro.
Signed-off-by: Bartosz Golaszewski
Acked-by: Arnd Bergmann
Acked-by: Daniel Lezcano
---
drivers/clocksource/timer-ti-dm.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/dri
From: Bartosz Golaszewski
Old early platform device support is now sh-specific. Before moving on
to implementing new early platform framework based on real platform
devices, prefix all early platform symbols with 'sh_'.
Signed-off-by: Bartosz Golaszewski
---
arch/sh/drivers/platform_early.c
On Mon, 27 Aug 2018 02:41:04 +0100,
Jia He wrote:
>
> Hi Marc
> Thanks for the comments
>
> On 8/27/2018 3:01 AM, Marc Zyngier Wrote:
> > [I'm travelling, so expect some major delays in responding to email]
> >
> > Hi Jia,
> >
> > On Sun, 26 Aug 2018 10:00:51 +0100,
> > Jia He wrote:
> >>
> >
Currently we enable the breakpoint back only if the breakpoint
modification was successful. If it fails we can leave the
breakpoint in disabled state with attr->disabled == 0.
We can safely enable the breakpoint back for both the fail
and success paths by checking the bp->attr.disabled, which
eith
Hi,
On 27.08.2018 11:34, Jiri Olsa wrote:
> On Thu, Aug 23, 2018 at 07:47:01PM +0300, Alexey Budankov wrote:
>
> SNIP
>
>> diff --git a/tools/perf/util/mmap.c b/tools/perf/util/mmap.c
>> index e71d46cb01cc..c8b921c88a5d 100644
>> --- a/tools/perf/util/mmap.c
>> +++ b/tools/perf/util/mmap.c
>> @@
hi,
Milind reported that modify_user_hw_breakpoint wouldn't
allow the breakpoint changing if the new attr had 'disabled'
set to true.
I found a case where it actualy prevents ptrace user interface
to change the breakpoint. It's described in patch 1 as perf test,
patch 2 is the breakpoint code fix.
Once the breakpoint was succesfully modified, the attr->disabled
value is in bp->attr.disabled. So there's no reason to set it
again, removing that.
Acked-by: Oleg Nesterov
Acked-by: Frederic Weisbecker
Link: http://lkml.kernel.org/n/tip-v5oaellzsmyszv3rfucux...@git.kernel.org
Signed-off-by: Jir
We can safely enable the breakpoint back for both the fail
and success paths by checking only the bp->attr.disabled,
which either holds the new 'requested' disabled state or
the original breakpoint state.
Suggested-by: Oleg Nesterov
Acked-by: Oleg Nesterov
Link: http://lkml.kernel.org/n/tip-vo1j
We need to change the breakpoint even if the attr with
new fields has disabled set to true.
Current code prevents following user code to change
the breakpoint address:
ptrace(PTRACE_POKEUSER, child, offsetof(struct user, u_debugreg[0]), addr_1)
ptrace(PTRACE_POKEUSER, child, offsetof(struct u
Adding to tests that aims on kernel breakpoint
modification bugs.
First test creates HW breakpoint, tries to change
it and checks it was properly changed. It aims
on kernel issue that prevents HW breakpoint to
be changed via ptrace interface.
The first test forks, the child sets itself as ptrace
Hi,
On 27.08.2018 0:48, Jiri Olsa wrote:
> On Tue, Aug 21, 2018 at 11:27:03AM +0300, Alexey Budankov wrote:
>
> SNIP
>
>> -static int record__pushfn(void *to, void *bf, size_t size)
>> +static int record__pushfn(void *to, void *bf, size_t size, off_t off)
>> {
>> struct record *rec = to;
>
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