Support the special characters escaped by '\' in parser.
This allows user to specify versions directly like below.
=
# ./perf probe -x /lib64/libc-2.25.so malloc_get_state\\@GLIBC_2.2.5
Added new event:
probe_libc:malloc_get_state (on malloc_get_state@GLIBC_2.2.5 in
/usr/lib64/libc-
Find versioned symbols correctly from map.
Commit d80406453ad4 ("perf symbols: Allow user probes on
versioned symbols") allows user to find default versioned
symbols (with "@@") in map. However, it did not enable
normal versioned symbol (with "@") for perf-probe.
E.g.
=
# ./perf probe -x /
Add __return suffix for function return events
automatically. Without this, user have to give --force
option and will see the number suffix for each event
like "function_1", which is not easy to recognize.
Instead, this adds __return suffix to it automatically.
E.g.
=
# ./perf probe -x /li
Cut off the version suffix (e.g. @GLIBC_2.2.5 etc.) from
automatic generated event name. This fixes wildcard event
adding like below case;
=
# perf probe -x /lib64/libc-2.25.so malloc*
Internal error: "malloc_get_state@GLIBC_2" is wrong event name.
Error: Failed to add events.
This improve the error message so that user can know
event-name error before writing new events to
kprobe-events interface.
E.g.
==
#./perf probe -x /lib64/libc-2.25.so malloc_get_state*
Internal error: "malloc_get_state@GLIBC_2" is wrong event name.
Error: Failed to add events.
Hi,
Here is the series for probing on versioned symbols
in libraries. This includes 5 patches to fix the
issues discussed on perf-users ML
(https://www.spinics.net/lists/linux-perf-users/msg04637.html)
[1/5] Warn if the event name is invalid. This notices
user that there is internal error whi
On Tue, 5 Dec 2017, David Rientjes wrote:
> One way to solve the issue is to have two mm flags: one to indicate the mm
> is entering unmap_vmas(): set the flag, do down_write(&mm->mmap_sem);
> up_write(&mm->mmap_sem), then unmap_vmas(). The oom reaper needs this
> flag clear, not MMF_OOM_SKIP,
On Wed, Dec 06, 2017 at 10:31:39AM +0800, Jason Wang wrote:
>
>
> On 2017年12月06日 03:29, Michael S. Tsirkin wrote:
> > Users of ptr_ring expect that it's safe to give the
> > data structure a pointer and have it be available
> > to consumers, but that actually requires an smb_wmb
> > or a stronger
It is preferred to use the panel compatible string rather than passing
the LCD timing in the device tree.
So pass the "sii,43wvf1g" compatible string which describes the parallel
LCD.
Also, pass the 'backlight' property as described in
Documentation/devicetree/bindings/display/panel/simple-pan
It is preferred to use the panel compatible string rather than passing
the LCD timing in the device tree.
So pass the "sii,43wvf1g" compatible string, which describes the parallel
LCD.
Also pass the 'backlight' property as described in
Documentation/devicetree/bindings/display/panel/simple-panel
It is not recommended to place regulators inside "simple-bus", so move
them out.
The motivation for doing this is to make it easier to adding new
regulators.
Signed-off-by: Marco Franchi
---
arch/arm/boot/dts/imx6sl-evk.dts | 85 +---
1 file changed, 37 ins
2017-12-06 1:09 GMT+08:00 Radim Krcmar :
> 2017-12-04 10:15+0800, Wanpeng Li:
>> 2017-11-14 13:12 GMT+08:00 Rik van Riel :
>> > Currently, every time a VCPU is scheduled out, the host kernel will
>> > first save the guest FPU/xstate context, then load the qemu userspace
>> > FPU context, only to th
Hi,
I'd like to understand the synchronization between the oom_reaper's
unmap_page_range() and exit_mmap(). The latter does not hold
mm->mmap_sem: it's supposed to be the last thread operating on the mm
before it is destroyed.
If unmap_page_range() races with unmap_vmas(), we trivially call
On 12/05/17 10:27, Geert Uytterhoeven wrote:
> Hi Pantelis, Rob, Frank,
>
> Here's a replacement for commit bd80e2555c5c9d45 ("of: overlay: Fix
> cleanup order in of_overlay_apply()"), which was applied by Rob, and
> dropped later.
>
> The first patch fixes the memory leak reported by Colin
On Tue, Dec 05, 2017 at 06:05:15PM -0800, Matthew Wilcox wrote:
> On Wed, Dec 06, 2017 at 12:45:49PM +1100, Dave Chinner wrote:
> > On Tue, Dec 05, 2017 at 04:40:46PM -0800, Matthew Wilcox wrote:
> > > From: Matthew Wilcox
> > >
> > > I looked through some notes and decided this was version 4 of
On Wed, Nov 29, 2017 at 4:58 PM, Omar Sandoval wrote:
> diff --git a/kernel/sched/wait.c b/kernel/sched/wait.c
> index 98feab7933c7..929ecb7d6b78 100644
> --- a/kernel/sched/wait.c
> +++ b/kernel/sched/wait.c
> @@ -27,7 +27,7 @@ void add_wait_queue(struct wait_queue_head *wq_head, struct
> wait_q
Cc: Jens Axboe
> On 5 Dec 2017, at 11:48 PM, t...@kernel.org wrote:
>
> Hello, Wang.
>
> On Tue, Dec 05, 2017 at 12:52:54AM -0500, Wang Long wrote:
>> Signed-off-by: Wang Long
>> ---
>> fs/fs-writeback.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/fs/fs-writeback
On 2017年12月06日 03:29, Michael S. Tsirkin wrote:
Users of ptr_ring expect that it's safe to give the
data structure a pointer and have it be available
to consumers, but that actually requires an smb_wmb
or a stronger barrier.
In absence of such barriers and on architectures that reorder writes,
Hi James,
After merging the scsi tree, today's linux-next build (x86_64
allmodconfig) produced these warnings:
drivers/scsi/bfa/bfad_bsg.c: In function 'bfad_im_bsg_vendor_request':
drivers/scsi/bfa/bfad_bsg.c:3137:35: warning: initialization makes pointer from
integer without a cast [-Wint-conv
2017-12-01 2:05 GMT+08:00 Radim Krčmář :
> Implementation of the unpinned APIC page didn't update the VMCS address
> cache when invalidation was done through range mmu notifiers.
> This became a problem when the page notifier was removed.
>
> Re-introduce the arch-specific helper and call it from .
On Wed, Dec 6, 2017 at 3:59 AM, Maxime Ripard
wrote:
> Hi,
>
> On Mon, Dec 04, 2017 at 01:19:12PM +0800, Chen-Yu Tsai wrote:
>> On the A64, the MMC module clocks are fixed in the new timing mode,
>> i.e. they do not have a bit to select the mode. These clocks have
>> a 2x divider somewhere between
Add a Video4Linux2 sensor-level driver for the OmniVision OV7740
VGA camera image sensor.
Changes in v7:
- Add Acked-by tag.
- Fix the wrong handle of default register configuration.
- Add the missed assignment of ov7740->frmsize.
Changes in v6:
- Remove unnecessary #include .
- Remove unnec
On 2017年12月06日 01:02, David Miller wrote:
From: Jason Wang
Date: Mon, 4 Dec 2017 17:31:23 +0800
This patch introduces an eBPF based queue selection method. With this,
the policy could be offloaded to userspace completely through a new
ioctl TUNSETSTEERINGEBPF.
Signed-off-by: Jason Wang
--
The ov7740 (color) image sensor is a high performance VGA CMOS
image snesor, which supports for output formats: RAW RGB and YUV
and image sizes: VGA, and QVGA, CIF and any size smaller.
Signed-off-by: Songjun Wu
Signed-off-by: Wenyou Yang
---
Changes in v7:
- Fix the wrong handle of default re
Add the device tree binding documentation for the ov7740 sensor driver.
Signed-off-by: Wenyou Yang
Acked-by: Rob Herring
---
Changes in v7:
- Add Acked-by tag.
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3:
- Explicitly document the "remote-endpoint" property.
Ch
On Wed, Dec 06, 2017 at 01:17:52PM +1100, Dave Chinner wrote:
> On Wed, Dec 06, 2017 at 01:53:41AM +, Matthew Wilcox wrote:
> > Huh, you've caught a couple of problems that 0day hasn't sent me yet. Try
> > turning on DAX or TRANSPARENT_HUGEPAGE. Thanks!
>
> Dax is turned on, CONFIG_TRANSPAR
On 12/5/17 3:46 PM, Kevin Cernekee wrote:
> Currently, a nlmon link inside a child namespace can observe systemwide
> netlink activity. Filter the traffic so that in a non-init netns,
> nlmon can only sniff netlink messages from its own netns.
>
> Test case:
>
> vpnns -- bash -c "ip link add
On Wed, Dec 06, 2017 at 01:53:41AM +, Matthew Wilcox wrote:
> Huh, you've caught a couple of problems that 0day hasn't sent me yet. Try
> turning on DAX or TRANSPARENT_HUGEPAGE. Thanks!
Dax is turned on, CONFIG_TRANSPARENT_HUGEPAGE is not.
Looks like nothing is setting CONFIG_RADIX_TREE_MU
Hi Cyrille,
Thanks a lot for your comments!
> -Original Message-
> From: Cyrille Pitchen [mailto:cyrille.pitc...@wedev4u.fr]
> Sent: 2017年12月6日 4:41
> To: Z.q. Hou ; linux-...@lists.infradead.org;
> linux-kernel@vger.kernel.org; computersforpe...@gmail.com;
> dw...@infradead.org; boris.br
On (12/05/17 17:59), Linus Torvalds wrote:
[..]
> On Tue, Dec 5, 2017 at 5:36 PM, Sergey Senozhatsky
> wrote:
> > I see some %p-s being used in _supposedly_ important output,
> > like arch/x86/mm/fault.c
> >
> > show_fault_oops(struct pt_regs *regs, unsigned long error_code,
> > un
Hi Rodrigo,
On Tue, 5 Dec 2017 17:21:54 -0800 Rodrigo Vivi wrote:
>
> I had just written the email for you about this.
> Feel free to ignore that one since you already found the solution
> and sorry for the delay on warning you.
And I should read all my email before responding to earlier ones :-
On Wed, Dec 06, 2017 at 12:45:49PM +1100, Dave Chinner wrote:
> On Tue, Dec 05, 2017 at 04:40:46PM -0800, Matthew Wilcox wrote:
> > From: Matthew Wilcox
> >
> > I looked through some notes and decided this was version 4 of the XArray.
> > Last posted two weeks ago, this version includes a *lot* o
On Wed, Dec 06, 2017 at 12:36:48PM +1100, Dave Chinner wrote:
> > - if (radix_tree_preload(GFP_NOFS))
> > - return -ENOMEM;
> > -
> > INIT_LIST_HEAD(&elem->list_node);
> > elem->key = key;
> >
> > - spin_lock(&mru->lock);
> > - error = radix_tree_insert(&mru->store, key, e
On 2017/12/6 6:39, kan.li...@intel.com wrote:
From: Kan Liang
perf_top__mmap_read has severe performance issue in
Knights Landing/Mill, when monitoring in heavy load system. It costs
several minutes to finish, which is unacceptable.
Currently, perf top is non overwrite mode. For non overwrit
On Tue, Dec 5, 2017 at 5:36 PM, Sergey Senozhatsky
wrote:
> I see some %p-s being used in _supposedly_ important output,
> like arch/x86/mm/fault.c
>
> show_fault_oops(struct pt_regs *regs, unsigned long error_code,
> unsigned long address)
> ...
> printk(KERN_CONT " at %p\
https://pcisig.com/sites/default/files/specification_documents/ECN_L1_PM_Substates_with_CLKREQ_31_May_2013_Rev10a.pdf
Pls also check My Intel Doc# 545845 for the bits fields description.
-Original Message-
From: Bjorn Helgaas [mailto:helg...@kernel.org]
Sent: Wednesday, December 6, 2017 3
Huh, you've caught a couple of problems that 0day hasn't sent me yet. Try
turning on DAX or TRANSPARENT_HUGEPAGE. Thanks!
> -Original Message-
> From: Dave Chinner [mailto:da...@fromorbit.com]
> Sent: Tuesday, December 5, 2017 8:51 PM
> To: Matthew Wilcox
> Cc: Matthew Wilcox ; Ross Zw
Fix a compiling error:
...
CC util/libunwind/x86_32.o
In file included from util/libunwind/x86_32.c:33:0:
util/libunwind/../../arch/x86/util/unwind-libunwind.c: In function
'libunwind__x86_reg_id':
util/libunwind/../../arch/x86/util/unwind-libunwind.c:110:11: error: 'EINVAL'
undecla
On Wed, Dec 06, 2017 at 12:28:25AM +0800, Ming Lei wrote:
> On Tue, Dec 05, 2017 at 04:08:20PM +, Bart Van Assche wrote:
> > On Tue, 2017-12-05 at 15:52 +0800, Ming Lei wrote:
> > > diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
> > > index db9556662e27..1816dd8259b3 100644
> >
On Wed, Dec 06, 2017 at 12:45:49PM +1100, Dave Chinner wrote:
> On Tue, Dec 05, 2017 at 04:40:46PM -0800, Matthew Wilcox wrote:
> > From: Matthew Wilcox
> >
> > I looked through some notes and decided this was version 4 of the XArray.
> > Last posted two weeks ago, this version includes a *lot* o
From: Richard Leitner Sent: Tuesday, December 05, 2017 9:26 PM
>Some PHYs (for example the SMSC LAN8710/LAN8720) doesn't allow turning
>the refclk on and off again during operation (according to their datasheet).
>Nonetheless exactly this behaviour was introduced for power saving reasons
>by commi
On Tue, Dec 05, 2017 at 04:40:46PM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> I looked through some notes and decided this was version 4 of the XArray.
> Last posted two weeks ago, this version includes a *lot* of changes.
> I'd like to thank Dave Chinner for his feedback, encouragem
Documentation/printk-formats.txt is a candidate for conversion to
ReStructuredText format. Some effort has already been made to do this
conversion even thought the suffix is currently .txt
Changes required to complete conversion
- Add double backticks where needed.
- Add entry to Documentation/in
On Tue, Dec 05, 2017 at 04:41:58PM -0800, Matthew Wilcox wrote:
> From: Matthew Wilcox
>
> This eliminates a call to radix_tree_preload().
.
> void
> @@ -431,24 +424,24 @@ xfs_mru_cache_insert(
> unsigned long key,
> struct xfs_mru_cache_elem *elem)
> {
> + XA_ST
On Tue, 2017-12-05 at 06:01 -0500, Jeff Layton wrote:
> On Tue, 2017-12-05 at 13:57 +0800, Aaron Lu wrote:
> > On Wed, Nov 08, 2017 at 03:22:33PM +0800, Aaron Lu wrote:
> > > On Thu, Sep 28, 2017 at 04:02:23PM +0800, kernel test robot wrote:
> > > >
> > > > Greeting,
> > > >
> > > > FYI, we notic
An error occurred during compile because there is no header file
at x86 configure.
Signed-off-by: Anthony Kim
---
drivers/input/touchscreen/hideep.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/input/touchscreen/hideep.c
b/drivers/input/touchscreen/hideep.c
index fc080a7..037da00
Hello,
On (12/05/17 13:22), Linus Torvalds wrote:
[..]
> It's not like those hex numbers were really helping people anyway.
> We've turned off most of them on x86 oops reports long ago (and
> entirely independently of the pointer hashing). Having stared at a lot
> of oopses in my time, the only he
On 22:30 Tue 05 Dec, Richard Weinberger wrote:
> On Tue, Nov 21, 2017 at 10:29 AM, Liu, Changcheng
> wrote:
> > fadd2line script should use the binary tool
> > used for the target system.
> >
> > Signed-off-by: Liu Changcheng
> >
> > diff --git a/scripts/faddr2line b/scripts/faddr2line
> > index
faddr2line hit var unbound error When CROSS_COMPILE
isn't set since nounset option is set in bash script.
Signed-off-by: Liu Changcheng
Reported-by: Richard Weinberger
diff --git a/scripts/faddr2line b/scripts/faddr2line
index 39e07d8..7721d5b 100755
--- a/scripts/faddr2line
+++ b/scripts/faddr
tl;dr: Kernels with pagetable isolation using INVPCID compile kernels
0.58% faster than using the deferred CR3 write. This tends to say that
we should leave things as-is and keep using INVPCID, but it's far from
definitive.
If folks have better ideas for a test methodology, or specific workloads
Sorry for the initial email - forgot the signed-off-by in my commit.
Still new to this...
I'd like feedback from the community on this patch. I've tested this
against my applications that were exhibiting problematic behavior when
tasks would wake up in FIFO order instead of priority order when t
On Wed, Dec 06, 2017 at 02:01:32AM +0100, Maciej S. Szmigiero wrote:
> >>> ==Verification==
> >>> Theoretically, it only needs code review, build and sanity tests. I
> >>> have done build and sanity tests on an i.MX 6 platform by building
> >>> using imx_v6_v7_defconfig and testing with I2S slave/
On Wed, Dec 06, 2017 at 01:00:15AM +, Stephen Rothwell wrote:
> Hi all,
Hi Stephen,
I had just written the email for you about this.
Feel free to ignore that one since you already found the solution
and sorry for the delay on warning you.
>
> After merging the drm-misc tree, today's linux-n
Hi Serge,
I love your patch! Perhaps something to improve:
[auto build test WARNING on linus/master]
[also build test WARNING on v4.15-rc2]
[cannot apply to ntb/ntb-next next-20171205]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]
url
On Tue, Dec 05, 2017 at 09:36:24AM -0800, Randy Dunlap wrote:
>On 12/05/2017 12:52 AM, Chao Fan wrote:
>> Add the document for the change of new parameter
>> immovable_mem=nn[KMG]@ss[KMG].
>>
>> Cc: linux-...@vger.kernel.org
>> Cc: Jonathan Corbet
>> Signed-off-by: Chao Fan
>> ---
>> Documentat
Signed-off-by: Jonathan Haws
---
ipc/mqueue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 9649ecd..cb96db9 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -546,7 +546,7 @@ static void wq_add(struct mqueue_inode_info *info, int sr,
On Tue, Dec 05, 2017 at 11:42:42AM -0800, Kees Cook wrote:
>On Tue, Dec 5, 2017 at 12:51 AM, Chao Fan wrote:
>> In current code, kaslr may choose the memory region in movable
>> nodes to extract kernel, which will make the nodes can't be hot-removed.
>> To solve it, we can specify the memory regio
---
ipc/mqueue.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 9649ecd..cb96db9 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -546,7 +546,7 @@ static void wq_add(struct mqueue_inode_info *info, int sr,
ewp->task = current;
From: Matthew Wilcox
XArray tags are slightly more strongly typed than the radix tree tags,
but occupy the same bits. This commit also adds the xas_ family of tag
operations, for cases where the caller is already holding the lock, and
xa_tagged() to ask whether any array member has a particular
Hi Ben,
Thanks for your reply.
On 2017/12/5 23:49, Ben Hutchings wrote:
> On Wed, 2017-11-22 at 11:12 +0100, Greg Kroah-Hartman wrote:
>> 4.4-stable review patch. If anyone has any objections, please let me know.
>>
>> --
>>
>> From: alex chen
>>
>> commit 28f5a8a7c033cbf3e32277
From: Matthew Wilcox
This is a direct replacement for struct radix_tree_node. Use a #define
so that radix tree users continue to work without change.
Signed-off-by: Matthew Wilcox
---
include/linux/radix-tree.h | 29 +++--
include/linux/xarray.h | 24 ++
From: Matthew Wilcox
This results in no change in structure size on 64-bit x86 as it fits in
the padding between the gfp_t and the void *.
Signed-off-by: Matthew Wilcox
---
fs/f2fs/gc.c | 2 +-
include/linux/idr.h| 12 ++--
include/linux/radix-tree.h
From: Matthew Wilcox
The IDR distinguishes between unallocated entries (read as NULL) and
entries where the user has chosen to store NULL. The radix tree was
modified to consider NULL entries which had tag 0 _clear_ as being
allocated, but it added a lot of complexity.
Instead, the XArray has a
From: Matthew Wilcox
These two functions move the xas index by one position, and adjust the
rest of the iterator state to match it. This is more efficient than
calling xas_set() as it keeps the iterator at the leaves of the tree
instead of walking the iterator from the root each time.
Signed-of
From: Matthew Wilcox
This first function in the XArray API brings with it a lot of support
infrastructure. The advanced API is based around the xa_state which is
a more capable version of the radix_tree_iter.
As the test-suite demonstrates, it is possible to use the xarray and
radix tree APIs o
From: Matthew Wilcox
Use the XArray APIs to add and replace pages in the page cache. This
removes two uses of the radix tree preload API and is significantly
shorter code.
Signed-off-by: Matthew Wilcox
---
mm/filemap.c | 142 +--
1 file
From: Matthew Wilcox
xa_store() differs from radix_tree_insert() in that it will overwrite an
existing element in the array rather than returning an error. This is
the behaviour which most users want, and those that want more complex
behaviour generally want to use the xas family of routines any
From: Matthew Wilcox
This iterator allows the user to efficiently walk a range of the array,
executing the loop body once for each non-NULL entry in that range.
This commit also includes xa_find() and xa_next() which are helper
functions for xa_for_each() but may also be useful in their own right
From: Julia Cartwright
Date: Tue, 5 Dec 2017 18:02:47 -0600
> Here's a proper patchset based on net-next.
>
> v1 -> v2:
> - Rebased on net-next
> - Add Nicolas's Acks
> - Reorder commits, putting the list_empty() cleanups prior to the
> others.
> - Added commit reverting the GFP_ATOM
From: Matthew Wilcox
This is a direct replacement for struct radix_tree_root. Some of the
struct members have changed name; convert those, and use a #define so
that radix_tree users continue to work without change.
Signed-off-by: Matthew Wilcox
---
include/linux/radix-tree.h | 3
From: Matthew Wilcox
This is documentation on how to use the XArray, not details about its
internal implementation.
Signed-off-by: Matthew Wilcox
---
Documentation/core-api/index.rst | 1 +
Documentation/core-api/xarray.rst | 281 ++
2 files changed, 282
From: Matthew Wilcox
Add myself as XArray and IDR maintainer.
Signed-off-by: Matthew Wilcox
---
MAINTAINERS | 12
1 file changed, 12 insertions(+)
diff --git a/MAINTAINERS b/MAINTAINERS
index d4fdcb12616c..b2f8d606756b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14874,6 +14874
From: Matthew Wilcox
I looked through some notes and decided this was version 4 of the XArray.
Last posted two weeks ago, this version includes a *lot* of changes.
I'd like to thank Dave Chinner for his feedback, encouragement and
distracting ideas for improvement, which I'll get to once this is
From: Matthew Wilcox
Rename the function from page_cache_tree_delete_batch to just
page_cache_delete_batch.
Signed-off-by: Matthew Wilcox
---
mm/filemap.c | 21 +++--
1 file changed, 7 insertions(+), 14 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 6c9cad248e7f..
From: Matthew Wilcox
Introduce page_cache_pin() to factor out the common logic between the
various lookup routines:
find_get_entry
find_get_entries
find_get_pages_range
find_get_pages_contig
find_get_pages_range_tag
find_get_entries_tag
filemap_map_pages
By using the xa_state to control the ite
From: Matthew Wilcox
This is essentially xa_cmpxchg() with the locking handled above us,
and it doesn't have to handle replacing a NULL entry.
Signed-off-by: Matthew Wilcox
---
mm/truncate.c | 15 ++-
1 file changed, 6 insertions(+), 9 deletions(-)
diff --git a/mm/truncate.c b/mm/
From: Matthew Wilcox
btrfs has its own custom function for determining whether the page cache
has any pages in a particular range. Move this functionality to the
page cache, and call it from btrfs.
Signed-off-by: Matthew Wilcox
---
fs/btrfs/btrfs_inode.h | 7 -
fs/btrfs/inode.c|
From: Matthew Wilcox
We construct a fake XA_STATE and use it to delete the node with xa_store()
rather than adding a special function for this unique use case.
Signed-off-by: Matthew Wilcox
---
include/linux/swap.h | 4 ++--
mm/workingset.c | 48 --
From: Matthew Wilcox
Remove the address_space ->tree_lock and use the xa_lock newly added to
the radix_tree_root. Rename the address_space ->page_tree to ->pages,
since we don't really care that it's a tree. Take the opportunity to
rearrange the elements of address_space to pack them better on
From: Matthew Wilcox
Combine __add_to_swap_cache and add_to_swap_cache into one function
since there is no more need to preload.
Signed-off-by: Matthew Wilcox
---
mm/swap_state.c | 93 ++---
1 file changed, 29 insertions(+), 64 deletions(-)
On Wednesday, November 29, 2017 12:12:27 PM CET Mark Brown wrote:
> A frequent source of build problems is poor handling of optional PM
> support, almost all development is done with the PM options enabled
> but they can be turned off. Currently few if any of the build test
> services do this as s
From: Matthew Wilcox
Introduce xarray value entries to replace the radix tree exceptional
entry code. This is a slight change in encoding to allow the use of an
extra bit (we can now store BITS_PER_LONG - 1 bits in a value entry).
It is also a change in emphasis; exceptional entries are intimida
On 05.12.2017 20:33, Nicolin Chen wrote:
> On Tue, Dec 05, 2017 at 02:01:17PM +0100, Maciej S. Szmigiero wrote:
>
>>> ==Verification==
>>> Theoretically, it only needs code review, build and sanity tests. I
>>> have done build and sanity tests on an i.MX 6 platform by building
>>> using imx_v6_v7_
From: Matthew Wilcox
This is a simple rename, except that xa_ail becomes ail_head.
Signed-off-by: Matthew Wilcox
---
fs/xfs/xfs_buf_item.c| 10 ++--
fs/xfs/xfs_dquot.c | 4 +-
fs/xfs/xfs_dquot_item.c | 11 ++--
fs/xfs/xfs_inode_item.c | 22 +++
fs/xfs/xfs_log.c |
On 12/01, Jerome Brunet wrote:
> On Fri, 2017-12-01 at 08:34 -0800, Stephen Boyd wrote:
> > On 11/30, Yixun Lan wrote:
> > > Hi Stephen
> > >
> > > On 11/30/17 03:35, Stephen Boyd wrote:
> > > >
> > > > Maybe just call the node "bus@ff63c000"?
> > > >
> > >
> > > isn't this just a name? what's
From: Matthew Wilcox
The code is slightly shorter and simpler.
Signed-off-by: Matthew Wilcox
---
mm/filemap.c | 26 --
1 file changed, 12 insertions(+), 14 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 2439747a0a17..6e2808fd3c06 100644
--- a/mm/filemap.c
From: Matthew Wilcox
This function frees all the internal memory allocated to the xarray
and reinitialises it to be empty.
Signed-off-by: Matthew Wilcox
---
include/linux/xarray.h | 1 +
lib/xarray.c | 26 ++
2 files changed, 27 insertions(+)
diff --git a/in
From: Matthew Wilcox
Instead of storing a pointer to the slot containing the canonical entry,
store the offset of the slot. Produces slightly more efficient code
(~300 bytes) and simplifies the implementation.
Signed-off-by: Matthew Wilcox
---
include/linux/xarray.h | 82 +
From: Matthew Wilcox
Includes moving mapping_tagged() to fs.h as a static inline, and
changing it to return bool.
Signed-off-by: Matthew Wilcox
---
include/linux/fs.h | 17 +--
mm/page-writeback.c | 62 +++--
2 files changed, 32 inse
From: Matthew Wilcox
This iterator operates across each tagged entry in the specified range.
We do not yet have a user for an xa_for_each_tag iterator, but it would
be straight-forward to add one if needed. This commit also includes
xas_find_tag() and xas_next_tag().
Signed-off-by: Matthew Wilc
From: Matthew Wilcox
Use the xarray infrstructure like we used the radix tree infrastructure.
This lets us get rid of idr_get_free() from the radix tree code.
Signed-off-by: Matthew Wilcox
---
include/linux/idr.h| 8 +-
include/linux/radix-tree.h | 4 -
lib/idr.c |
Hi all,
After merging the drm-misc tree, today's linux-next build (x86_64
allmodconfig) failed like this:
drivers/gpu/drm/i915/intel_dsi.c: In function 'intel_dsi_get_panel_orientation':
drivers/gpu/drm/i915/intel_dsi.c:1673:13: error: storage size of 'plane' isn't
known
enum plane plane;
From: Matthew Wilcox
I found another victim of the radix tree being hard to use. Because
there was no call to radix_tree_preload(), khugepaged was allocating
radix_tree_nodes using GFP_ATOMIC.
I also converted a local_irq_save()/restore() pair to
disable()/enable().
Signed-off-by: Matthew Wilc
From: Matthew Wilcox
This is a fairly naive conversion, leaving in place the GFP_ATOMIC
allocation. By switching the locking around, we could use GFP_KERNEL
and probably simplify the error handling.
Signed-off-by: Matthew Wilcox
---
include/linux/backing-dev-defs.h | 2 +-
include/linux/back
From: Matthew Wilcox
Signed-off-by: Matthew Wilcox
---
fs/btrfs/compression.c | 4 +---
fs/btrfs/extent_io.c | 6 ++
2 files changed, 3 insertions(+), 7 deletions(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index e687d06cd97c..4174b166e235 100644
--- a/fs/btrfs/compre
From: Matthew Wilcox
This one is trivial.
Signed-off-by: Matthew Wilcox
---
mm/readahead.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/mm/readahead.c b/mm/readahead.c
index f64b31b3a84a..66bcaffd47f0 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -174,9 +174,7 @
From: Matthew Wilcox
Both callers of __delete_from_swap_cache have the swp_entry_t already,
so pass that in to make constructing the XA_STATE easier.
Signed-off-by: Matthew Wilcox
---
include/linux/swap.h | 5 +++--
mm/swap_state.c | 24 ++--
mm/vmscan.c | 2
From: Matthew Wilcox
As with shmem_tag_pins(), hold the lock around the entire loop instead
of acquiring & dropping it for each entry we're going to untag.
Signed-off-by: Matthew Wilcox
---
mm/shmem.c | 59 ---
1 file changed, 24 insertio
On Tuesday, November 28, 2017 10:48:07 PM CET Tyler Baicar wrote:
> First, break the PCIe AER handling out into its own function to separate
> it from the standard GHES processing
>
> Then fix the AER handling to process all errors in the AER driver rather
> than only handling recoverable errors.
From: Matthew Wilcox
This removes the last caller of radix_tree_maybe_preload_order().
Simpler code, unless we run out of memory for new xa_nodes partway through
inserting entries into the xarray. Hopefully we can support multi-index
entries in the page cache soon and all the awful code goes awa
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