Hi,
Here's this week drm-misc-fixes PR
Maxime
drm-misc-fixes-2023-07-27:
A single patch to remove an unused function.
The following changes since commit ea293f823a8805735d9e00124df81a8f448ed1ae:
drm/nouveau/kms/nv50-: init hpd_irq_lock for PIOR DP (2023-07-19 11:08:47
+0200)
are available i
On 2023/7/27 14:57, Uwe Kleine-König wrote:
> Hello,
>
> On Thu, Jul 27, 2023 at 11:39:23AM +, Ruan Jinjie wrote:
>> There is no need to call the DSSERR() function directly to print
>> a custom message when handling an error from platform_get_irq() function
>> as it is going to display an a
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the xfs-inodegc shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the mm-zspool shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section wh
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the virtio-balloon shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical secti
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the ext4-es shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section when
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the vmw-balloon shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the xfs-buf shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section when
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the xfs-qm shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section when
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> Now no users are using the old APIs, just remove them.
>
> Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the jbd2-journal shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> Currently, the synchronize_shrinkers() is only used by TTM pool. It only
> requires that no shrinkers run in parallel.
>
> After we use RCU+refcount method to implement the lockless slab shrink,
> we can not use shrinker_rwsem or synchronize_rc
Update the RPMHPD references with new bindings defined in rpmhpd.h
for Qualcomm SoCs SM8[2345]50.
Signed-off-by: Rohit Agarwal
---
Documentation/devicetree/bindings/clock/qcom,dispcc-sm8x50.yaml| 3 ++-
Documentation/devicetree/bindings/clock/qcom,sm8350-videocc.yaml | 3 ++-
Documentation
Jocelyn,
>> How can I check for sure whether I am using 24 or 32 bits per pixel
>> ?
>
> The easiest solution if you already rebuilt your kernel is to print
> the variable bpp here:
>
> https://elixir.bootlin.com/linux/latest/source/drivers/gpu/drm/mgag200/mgag200_mode.c#L326
>
> pr_info("mga
On Thu, Jul 27, 2023 at 10:21:10AM +0530, Rohit Agarwal wrote:
> Update the RPMHPD references with new bindings defined in rpmhpd.h
> for Qualcomm SoCs SM8[2345]50.
>
> Signed-off-by: Rohit Agarwal
> ---
> Documentation/devicetree/bindings/clock/qcom,dispcc-sm8x50.yaml| 3 ++-
> Documentatio
Sorry for the interruption, I just notice that the ndlp node
inside timer does not share with that of lpfc_cleanup_pending_mbox().
This is a false alarm and sorry again for this.
Best regards,
Chengfeng
As &ndlp->lock is acquired by timer lpfc_els_retry_delay() under softirq
context, process context code acquiring the lock &ndlp->lock should
disable irq or bh, otherwise deadlock could happen if the timer preempt
the execution while the lock is held in process context on the same CPU.
The two lock
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> Currently, we maintain two linear arrays per node per memcg, which are
> shrinker_info::map and shrinker_info::nr_deferred. And we need to resize
> them when the shrinker_nr_max is exceeded, that is, allocate a new array,
> and then copy the old
On Thu, Jul 27, 2023 at 12:24:10PM +0530, Rohit Agarwal wrote:
>
> On 7/27/2023 11:06 AM, Pavan Kondeti wrote:
> > On Thu, Jul 27, 2023 at 10:21:10AM +0530, Rohit Agarwal wrote:
> > > Update the RPMHPD references with new bindings defined in rpmhpd.h
> > > for Qualcomm SoCs SM8[2345]50.
> > >
> >
On 7/27/2023 11:06 AM, Pavan Kondeti wrote:
On Thu, Jul 27, 2023 at 10:21:10AM +0530, Rohit Agarwal wrote:
Update the RPMHPD references with new bindings defined in rpmhpd.h
for Qualcomm SoCs SM8[2345]50.
Signed-off-by: Rohit Agarwal
---
Documentation/devicetree/bindings/clock/qcom,dispcc-
On 2023/7/24 17:43, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the md-bcache shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the st
When building with W=1, the following warning occurs.
drivers/gpu/drm/bridge/analogix/analogix-anx78xx.c:48:17: warning:
‘anx781x_i2c_addresses’ defined but not used [-Wunused-const-variable=]
static const u8 anx781x_i2c_addresses[] = {
^
drivers/gpu/drm/brid
When building with W=1, the following warning occurs.
drivers/gpu/drm/radeon/radeon_ttm.c:200:20: warning: variable ‘rbo’ set but not
used [-Wunused-but-set-variable]
struct radeon_bo *rbo;
The variable 'rbo' is used only in WARN_ON_ONCE in the function
radeon_bo_move, and WARN_ON_ONCE is remo
It is possible that dma_request_chan will return EPROBE_DEFER,
which means that disp->dev is not ready yet. In this case,
dev_err(disp->dev), there will be no output. This patch fixes the bug.
Signed-off-by: Wang Ming
---
drivers/gpu/drm/xlnx/zynqmp_disp.c | 4 ++--
1 file changed, 2 insertions(
> On Jul 24, 2023, at 17:43, Qi Zheng wrote:
>
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the mbcache shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section when
On 26/07/2023 20:50, Thierry Reding wrote:
> From: Thierry Reding
>
> The Hydis HV070WX2-1E0 is a 7" WXGA (800x1280) TFT LCD LVDS panel that
> is one of the variants used on Google Nexus 7.
>
> Signed-off-by: Thierry Reding
> ---
> Documentation/devicetree/bindings/display/panel/panel-lvds.yam
As &ndlp->lock is acquired by timer lpfc_els_retry_delay() under softirq
context, process context code acquiring the lock &phba->hbalock should
disable irq or bh, otherwise deadlock could happen if the timer preempt
the execution while the lock is held in process context on the same CPU.
The two l
On 26/07/2023 20:48, Thierry Reding wrote:
> From: Thierry Reding
>
> The HannStar HSD101PWW2 is an LVDS panel, so move it to the correct
> bindings file.
>
> Signed-off-by: Thierry Reding
> ---
Acked-by: Krzysztof Kozlowski
Best regards,
Krzysztof
On 2023/7/24 17:43, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the s_shrink, so that it can be freed asynchronously
using kfree_rcu(). Then it doesn't need to wait for RCU read-side critical
section when releasing the struct super
On 26/07/2023 20:50, Thierry Reding wrote:
> From: Thierry Reding
>
> The Chunghwa CLAA070WP03XG is an LVDS panel, so move it to the correct
> bindings file.
>
> Signed-off-by: Thierry Reding
> ---
Acked-by: Krzysztof Kozlowski
Best regards,
Krzysztof
Hi,
Thanks a lot!
On 2023/7/27 09:47, CK Hu (胡俊光) wrote:
Hi, Jingfeng:
On Thu, 2023-07-06 at 21:40 +0800, Sui Jingfeng wrote:
>
> External email : Please do not click links or open attachments until
> you have verified the sender or the content.
> Also return -ENOMEM if such a failure h
Am 24.07.23 um 15:36 schrieb Alex Deucher:
On Sun, Jul 23, 2023 at 10:43 PM Guchun Chen wrote:
Add a check to avoid null pointer dereference as below:
[ 90.002283] general protection fault, probably for non-canonical
address 0xdc00: [#1] PREEMPT SMP KASAN NOPTI
[ 90.002292
[Public]
> -Original Message-
> From: Koenig, Christian
> Sent: Thursday, July 27, 2023 3:28 PM
> To: Alex Deucher ; Chen, Guchun
>
> Cc: Deucher, Alexander ; airl...@gmail.com;
> dan...@ffwll.ch; dri-devel@lists.freedesktop.org; Mikhail Gavrilov
>
> Subject: Re: [PATCH] drm/ttm: check
Hi Jason,
>
> On Tue, Jul 25, 2023 at 10:44:09PM +, Kasireddy, Vivek wrote:
> > > If you still need the memory mapped then you re-call hmm_range_fault
> > > and re-obtain it. hmm_range_fault will resolve all the races and you
> > > get new pages.
>
> > IIUC, for my udmabuf use-case, it looks
On Thu, Jul 27, 2023 at 12:33 PM Chen, Guchun wrote:
> > Reviewed-by: Christian König
> >
> > Has this already been pushed to drm-misc-next?
> >
> > Thanks,
> > Christian.
>
> Not yet, Christian, as I don't have push permission. I saw you were on
> vacation, so I would expect to ping you to push
Am 18.07.23 um 13:16 schrieb Luc Ma:
From: Luc Ma
The kernel-doc for DMA-BUF statistics mentions /sys/kernel/dma-buf/buffers
but the correct path is /sys/kernel/dmabuf/buffers instead.
Signed-off-by: Luc Ma
Reviewed-by: Javier Martinez Canillas
Reviewed and pushed to drm-misc-next.
Thanks
On 27.07.2023 00:53, Rob Clark wrote:
> On Wed, Jul 26, 2023 at 3:33 PM Dmitry Baryshkov
> wrote:
>>
>> On Thu, 27 Jul 2023 at 01:04, Rob Clark wrote:
>>>
>>> On Wed, Jul 26, 2023 at 2:43 PM Dmitry Baryshkov
>>> wrote:
On 26/07/2023 23:11, Rob Clark wrote:
> On Wed, Jul 26, 2023 at
Hi Thierry,
Thank you for the patch.
On Wed, Jul 26, 2023 at 08:48:55PM +0200, Thierry Reding wrote:
> From: Thierry Reding
>
> The HannStar HSD101PWW2 is an LVDS panel, so move it to the correct
> bindings file.
>
> Signed-off-by: Thierry Reding
> ---
> Documentation/devicetree/bindings/dis
Hi Thierry,
Thank you for the patch.
On Wed, Jul 26, 2023 at 08:50:08PM +0200, Thierry Reding wrote:
> From: Thierry Reding
>
> The Chunghwa CLAA070WP03XG is an LVDS panel, so move it to the correct
> bindings file.
>
> Signed-off-by: Thierry Reding
Reviewed-by: Laurent Pinchart
> ---
> D
Hi Thierry,
Thank you for the patch.
On Wed, Jul 26, 2023 at 08:50:09PM +0200, Thierry Reding wrote:
> From: Thierry Reding
>
> The Hydis HV070WX2-1E0 is a 7" WXGA (800x1280) TFT LCD LVDS panel that
> is one of the variants used on Google Nexus 7.
>
> Signed-off-by: Thierry Reding
Reviewed-b
Hi all,
1. Background
=
We used to implement the lockless slab shrink with SRCU [1], but then kernel
test robot reported -88.8% regression in stress-ng.ramfs.ops_per_sec test
case [2], so we reverted it [3].
This patch series aims to re-implement the lockless slab shrink using the
re
In binder_init(), the destruction of binder_alloc_shrinker_init() is not
performed in the wrong path, which will cause memory leaks. So this commit
introduces binder_alloc_shrinker_exit() and calls it in the wrong path to
fix that.
Fixes: f2517eb76f1f ("android: binder: Add global lru shrinker to
The following functions are only used inside the mm subsystem, so it's
better to move their declarations to the mm/internal.h file.
1. shrinker_debugfs_add()
2. shrinker_debugfs_detach()
3. shrinker_debugfs_remove()
Signed-off-by: Qi Zheng
---
include/linux/shrinker.h | 19 ---
The mm/vmscan.c file is too large, so separate the shrinker-related
code from it into a separate file. No functional changes.
Signed-off-by: Qi Zheng
---
mm/Makefile | 4 +-
mm/internal.h | 2 +
mm/shrinker.c | 709 ++
mm/vmscan.c | 701 ---
The debugfs_remove_recursive() will wait for debugfs_file_put() to return,
so the shrinker will not be freed when doing debugfs operations (such as
shrinker_debugfs_count_show() and shrinker_debugfs_scan_write()), so there
is no need to hold shrinker_rwsem during debugfs operations.
Signed-off-by:
Currently, the shrinker instances can be divided into the following three
types:
a) global shrinker instance statically defined in the kernel, such as
workingset_shadow_shrinker.
b) global shrinker instance statically defined in the kernel modules, such
as mmu_shrinker in x86.
c) shrinker
Use new APIs to dynamically allocate the x86-mmu shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
arch/x86/kvm/mmu/mmu.c | 18 ++
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index ec169f5c7dce..15fc
Use new APIs to dynamically allocate the android-binder shrinker.
Signed-off-by: Qi Zheng
---
drivers/android/binder_alloc.c | 31 +++
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/drivers/android/binder_alloc.c b/drivers/android/binder_alloc.c
index
Use new APIs to dynamically allocate the drm-ttm_pool shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/gpu/drm/ttm/ttm_pool.c | 23 +++
1 file changed, 15 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm/t
Use new APIs to dynamically allocate the xen-backend shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
drivers/xen/xenbus/xenbus_probe_backend.c | 18 +++---
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/drivers/xen/xenbus/xenbus_probe_backend.c
b/driv
Use new APIs to dynamically allocate the erofs-shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/erofs/utils.c | 20 +---
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/fs/erofs/utils.c b/fs/erofs/utils.c
index cc6fb9e98899..6e1a828e6ca3 100644
--
Use new APIs to dynamically allocate the f2fs-shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/f2fs/super.c | 32
1 file changed, 24 insertions(+), 8 deletions(-)
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index a123f1378d57..9200b67aa745 1
Use new APIs to dynamically allocate the gfs2-glock shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/gfs2/glock.c | 20 +++-
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 1438e7465e30..8d582ba7514f 100644
Use new APIs to dynamically allocate the gfs2-qd shrinker.
Signed-off-by: Qi Zheng
---
fs/gfs2/main.c | 6 +++---
fs/gfs2/quota.c | 26 --
fs/gfs2/quota.h | 3 ++-
3 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index af
Use new APIs to dynamically allocate the nfs-xattr shrinkers.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfs/nfs42xattr.c | 87 +++--
1 file changed, 44 insertions(+), 43 deletions(-)
diff --git a/fs/nfs/nfs42xattr.c b/fs/nfs/nfs42xattr.c
in
Use new APIs to dynamically allocate the nfs-acl shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfs/super.c | 20
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 2284f749d892..072d82e1be06 100644
--- a/
Use new APIs to dynamically allocate the nfsd-filecache shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfsd/filecache.c | 22 --
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/fs/nfsd/filecache.c b/fs/nfsd/filecache.c
index ee9c923192e0..8
Use new APIs to dynamically allocate the dquota-cache shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/quota/dquot.c | 18 ++
1 file changed, 10 insertions(+), 8 deletions(-)
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index e8232242dd34..8883e6992f7c 1006
Use new APIs to dynamically allocate the ubifs-slab shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/ubifs/super.c | 22 --
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index b08fb28d16b5..c690782388a8 1
Use new APIs to dynamically allocate the rcu-lazy shrinker.
Signed-off-by: Qi Zheng
---
kernel/rcu/tree_nocb.h | 20 +++-
1 file changed, 11 insertions(+), 9 deletions(-)
diff --git a/kernel/rcu/tree_nocb.h b/kernel/rcu/tree_nocb.h
index 5598212d1f27..e1c59c33738a 100644
--- a/k
Use new APIs to dynamically allocate the rcu-kfree shrinker.
Signed-off-by: Qi Zheng
---
kernel/rcu/tree.c | 22 +-
1 file changed, 13 insertions(+), 9 deletions(-)
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index cb1caefa8bd0..6d2f82f79c65 100644
--- a/kernel/rcu/tr
Use new APIs to dynamically allocate the thp-zero and thp-deferred_split
shrinkers.
Signed-off-by: Qi Zheng
---
mm/huge_memory.c | 69 +++-
1 file changed, 45 insertions(+), 24 deletions(-)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index e37150
Use new APIs to dynamically allocate the sunrpc_cred shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
net/sunrpc/auth.c | 19 +++
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/net/sunrpc/auth.c b/net/sunrpc/auth.c
index 2f16f9d17966..6b898b1be6f5 1
Use new APIs to dynamically allocate the mm-shadow shrinker.
Signed-off-by: Qi Zheng
---
mm/workingset.c | 27 ++-
1 file changed, 14 insertions(+), 13 deletions(-)
diff --git a/mm/workingset.c b/mm/workingset.c
index da58a26d0d4d..3c53138903a7 100644
--- a/mm/workingset
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the i915_gem_mm shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct drm_i915_private.
Signed-off-by:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the drm-msm_gem shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct msm_drm_private.
Signed-off-by: Q
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the drm-panfrost shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct panfrost_device.
Signed-off-by:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the dm-bufio shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct dm_bufio_client.
Signed-off-by: Qi Z
Am 27.07.23 um 09:39 schrieb Mikhail Gavrilov:
On Thu, Jul 27, 2023 at 12:33 PM Chen, Guchun wrote:
Reviewed-by: Christian König
Has this already been pushed to drm-misc-next?
Thanks,
Christian.
Not yet, Christian, as I don't have push permission. I saw you were on
vacation, so I would exp
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the dm-zoned-meta shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct dmz_metadata.
Signed-off-by: Qi
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the md-raid5 shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct r5conf.
Signed-off-by: Qi Zheng
Rev
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the md-bcache shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct cache_set.
Signed-off-by: Qi Zheng
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the vmw-balloon shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct vmballoon.
And we can simply exit
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the virtio-balloon shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct virtio_balloon.
Signed-off-by:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the mbcache shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct mb_cache.
Signed-off-by: Qi Zheng
Re
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the ext4-es shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct ext4_sb_info.
Signed-off-by: Qi Zheng
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the jbd2-journal shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct journal_s.
Signed-off-by: Qi Zhe
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the nfsd-client shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct nfsd_net.
Signed-off-by: Qi Zheng
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the nfsd-reply shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct nfsd_net.
Signed-off-by: Qi Zheng
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-buf shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct xfs_buftarg.
Signed-off-by: Qi Zheng
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-inodegc shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct xfs_mount.
Signed-off-by: Qi Zhen
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the xfs-qm shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct xfs_quotainfo.
Signed-off-by: Qi Zheng
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the mm-zspool shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the struct zs_pool.
Signed-off-by: Qi Zheng
R
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the s_shrink, so that it can be freed asynchronously
using kfree_rcu(). Then it doesn't need to wait for RCU read-side critical
section when releasing the struct super_block.
Signed-off-by: Qi Zheng
Reviewe
Now no users are using the old APIs, just remove them.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
include/linux/shrinker.h | 7 --
mm/shrinker.c| 143 ---
2 files changed, 150 deletions(-)
diff --git a/include/linux/shrinker.h b/inclu
Currently, the synchronize_shrinkers() is only used by TTM pool. It only
requires that no shrinkers run in parallel.
After we use RCU+refcount method to implement the lockless slab shrink,
we can not use shrinker_rwsem or synchronize_rcu() to guarantee that all
shrinker invocations have seen an up
Currently, we maintain two linear arrays per node per memcg, which are
shrinker_info::map and shrinker_info::nr_deferred. And we need to resize
them when the shrinker_nr_max is exceeded, that is, allocate a new array,
and then copy the old array to the new array, and finally free the old
array by R
The shrinker_rwsem is a global read-write lock in shrinkers subsystem,
which protects most operations such as slab shrink, registration and
unregistration of shrinkers, etc. This can easily cause problems in the
following cases.
1) When the memory pressure is high and there are many filesystems
Like global slab shrink, this commit also uses refcount+RCU method to make
memcg slab shrink lockless.
Use the following script to do slab shrink stress test:
```
DIR="/root/shrinker/memcg/mnt"
do_create()
{
mkdir -p /sys/fs/cgroup/memory/test
echo 4G > /sys/fs/cgroup/memory/test/memory
For now, reparent_shrinker_deferred() is the only holder of read lock of
shrinker_rwsem. And it already holds the global cgroup_mutex, so it will
not be called in parallel.
Therefore, in order to convert shrinker_rwsem to shrinker_mutex later,
here we change to hold the write lock of shrinker_rwse
Now there are no readers of shrinker_rwsem, so we can simply replace it
with mutex lock.
Signed-off-by: Qi Zheng
---
drivers/md/dm-cache-metadata.c | 2 +-
fs/super.c | 2 +-
mm/shrinker.c | 28 ++--
mm/shrinker_debug.c|
On 7/27/23 17:04, Qi Zheng wrote:
> In preparation for implementing lockless slab shrink, use new APIs to
> dynamically allocate the dm-zoned-meta shrinker, so that it can be freed
> asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
> read-side critical section when releasing t
On Thu, Jul 27, 2023, at 00:03, Arthur Grillo wrote:
> Using the `kunit_tool` with the command:
>
> tools/testing/kunit/kunit.py run --kunitconfig=drivers/gpu/drm/tests/
>
> Lead to this error[0]. Fix it by expliciting removing the
> CONFIG_DRM_FBDEV_EMULATION.
>
> [0]
> ERROR:root:
> WARNING: unme
On Thu, 27 Jul 2023 at 02:14, Abhinav Kumar wrote:
>
>
>
> On 7/26/2023 3:58 PM, Dmitry Baryshkov wrote:
> > On Thu, 27 Jul 2023 at 01:30, Abhinav Kumar
> > wrote:
> >>
> >>
> >>
> >> On 5/21/2023 10:10 AM, Dmitry Baryshkov wrote:
> >>> As we are going to use MDSS data for DPU programming, popul
On Thu, 27 Jul 2023 at 02:20, Abhinav Kumar wrote:
>
>
>
> On 5/21/2023 10:10 AM, Dmitry Baryshkov wrote:
> > Switch to using data from MDSS driver to program the SSPP fetch and UBWC
> > configuration.
> >
> > Signed-off-by: Dmitry Baryshkov
> > ---
> > drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp
Hi,
On 2023/7/27 16:30, Damien Le Moal wrote:
On 7/27/23 17:04, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the dm-zoned-meta shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
r
On 2023/7/27 16:04, Qi Zheng wrote:
Use new APIs to dynamically allocate the nfs-acl shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfs/super.c | 20
1 file changed, 12 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
ind
On 2023/7/27 16:04, Qi Zheng wrote:
Use new APIs to dynamically allocate the nfsd-filecache shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
fs/nfsd/filecache.c | 22 --
1 file changed, 12 insertions(+), 10 deletions(-)
diff --git a/fs/nfsd/filecache.c
On 2023/7/27 16:04, Qi Zheng wrote:
Use new APIs to dynamically allocate the sunrpc_cred shrinker.
Signed-off-by: Qi Zheng
Reviewed-by: Muchun Song
---
net/sunrpc/auth.c | 19 +++
1 file changed, 11 insertions(+), 8 deletions(-)
diff --git a/net/sunrpc/auth.c b/net/sunrp
On 2023/7/27 16:04, Qi Zheng wrote:
In preparation for implementing lockless slab shrink, use new APIs to
dynamically allocate the dm-bufio shrinker, so that it can be freed
asynchronously using kfree_rcu(). Then it doesn't need to wait for RCU
read-side critical section when releasing the str
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