[PATCH] 6lowpan: use rb_entry()

[PATCH] 6lowpan: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 net/6lowpan/nhc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/6lowpan/nhc.c b/net/6lowpan/nhc.c
index 7008d53..4fa2fdd 100644
--- a/net/6lowpan/nhc.c
+++ b/net/6lowpan/nhc.c
@@ -27,8 +27,8 @@ static int lowpan_nhc_insert(struct lowpan_nhc *nhc)
 
 	/* Figure out where to put new node */
 	while (*new) {
-		struct lowpan_nhc *this = container_of(*new, struct lowpan_nhc,
-						       node);
+		struct lowpan_nhc *this = rb_entry(*new, struct lowpan_nhc,
+						   node);
 		int result, len_dif, len;
 
 		len_dif = nhc->idlen - this->idlen;
@@ -69,8 +69,8 @@ static struct lowpan_nhc *lowpan_nhc_by_nhcid(const struct sk_buff *skb)
 	const u8 *nhcid_skb_ptr = skb->data;
 
 	while (node) {
-		struct lowpan_nhc *nhc = container_of(node, struct lowpan_nhc,
-						      node);
+		struct lowpan_nhc *nhc = rb_entry(node, struct lowpan_nhc,
+						  node);
 		u8 nhcid_skb_ptr_masked[LOWPAN_NHC_MAX_ID_LEN];
 		int result, i;
 
-- 
2.9.3

[PATCH] dm bio prison: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 drivers/md/dm-bio-prison.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-bio-prison.c b/drivers/md/dm-bio-prison.c
index 03af174..a2c8a9e 100644
--- a/drivers/md/dm-bio-prison.c
+++ b/drivers/md/dm-bio-prison.c
@@ -115,7 +115,7 @@ static int __bio_detain(struct dm_bio_prison *prison,
 
 	while (*new) {
 		struct dm_bio_prison_cell *cell =
-			container_of(*new, struct dm_bio_prison_cell, node);
+			rb_entry(*new, struct dm_bio_prison_cell, node);
 
 		r = cmp_keys(key, &cell->key);
 
-- 
2.9.3

Re: [PATCH] dm bio prison: use rb_entry()

[Coly Li]

On 2017/1/20 下午10:36, Geliang Tang wrote:
> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
> 
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>
> ---
>  drivers/md/dm-bio-prison.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/md/dm-bio-prison.c b/drivers/md/dm-bio-prison.c
> index 03af174..a2c8a9e 100644
> --- a/drivers/md/dm-bio-prison.c
> +++ b/drivers/md/dm-bio-prison.c
> @@ -115,7 +115,7 @@ static int __bio_detain(struct dm_bio_prison *prison,
>  
>  	while (*new) {
>  		struct dm_bio_prison_cell *cell =
> -			container_of(*new, struct dm_bio_prison_cell, node);
> +			rb_entry(*new, struct dm_bio_prison_cell, node);
>  
>  		r = cmp_keys(key, &cell->key);
>  
> 
Acked-by: Coly Li <colyli@suse.de>

[PATCH v2] dm bio prison: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Acked-by: Coly Li <colyli@suse.de>
---
Changes in v2:
 - Apply to dm-bio-prison-v1.c and dm-bio-prison-v2.c
---
 drivers/md/dm-bio-prison-v1.c | 2 +-
 drivers/md/dm-bio-prison-v2.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/md/dm-bio-prison-v1.c b/drivers/md/dm-bio-prison-v1.c
index ae7da2c..f8d221b 100644
--- a/drivers/md/dm-bio-prison-v1.c
+++ b/drivers/md/dm-bio-prison-v1.c
@@ -116,7 +116,7 @@ static int __bio_detain(struct dm_bio_prison *prison,
 
 	while (*new) {
 		struct dm_bio_prison_cell *cell =
-			container_of(*new, struct dm_bio_prison_cell, node);
+			rb_entry(*new, struct dm_bio_prison_cell, node);
 
 		r = cmp_keys(key, &cell->key);
 
diff --git a/drivers/md/dm-bio-prison-v2.c b/drivers/md/dm-bio-prison-v2.c
index c9b11f7..8ce3a1a 100644
--- a/drivers/md/dm-bio-prison-v2.c
+++ b/drivers/md/dm-bio-prison-v2.c
@@ -120,7 +120,7 @@ static bool __find_or_insert(struct dm_bio_prison_v2 *prison,
 
 	while (*new) {
 		struct dm_bio_prison_cell_v2 *cell =
-			container_of(*new, struct dm_bio_prison_cell_v2, node);
+			rb_entry(*new, struct dm_bio_prison_cell_v2, node);
 
 		r = cmp_keys(key, &cell->key);
 
-- 
2.9.3

[PATCH] drm/i915/error: use rb_entry()

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 9cd22cd..e537532 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1080,7 +1080,7 @@ static void error_record_engine_waiters(struct intel_engine_cs *engine,
 
 	ee->waiters = waiter;
 	for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
-		struct intel_wait *w = container_of(rb, typeof(*w), node);
+		struct intel_wait *w = rb_entry(rb, typeof(*w), node);
 
 		strcpy(waiter->comm, w->tsk->comm);
 		waiter->pid = w->tsk->pid;
-- 
2.9.3

[PATCH] drm/i915/error: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 9cd22cd..e537532 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -1080,7 +1080,7 @@ static void error_record_engine_waiters(struct intel_engine_cs *engine,
 
 	ee->waiters = waiter;
 	for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
-		struct intel_wait *w = container_of(rb, typeof(*w), node);
+		struct intel_wait *w = rb_entry(rb, typeof(*w), node);
 
 		strcpy(waiter->comm, w->tsk->comm);
 		waiter->pid = w->tsk->pid;
-- 
2.9.3

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Re: [Intel-gfx] [PATCH] drm/i915/error: use rb_entry()

[Chris Wilson]

On Fri, Jan 20, 2017 at 10:36:55PM +0800, Geliang Tang wrote:
> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
> 
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>

Applied, thanks.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre

Re: [PATCH] drm/i915/error: use rb_entry()

[Chris Wilson]

On Fri, Jan 20, 2017 at 10:36:55PM +0800, Geliang Tang wrote:
> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
> 
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>

Applied, thanks.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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[PATCH] drm/nouveau/client: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 drivers/gpu/drm/nouveau/nvkm/core/client.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/core/client.c b/drivers/gpu/drm/nouveau/nvkm/core/client.c
index e194391..ab2ee14 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/client.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/client.c
@@ -221,7 +221,7 @@ nvkm_client_insert(struct nvkm_client *client, struct nvkm_object *object)
 
 	while (*ptr) {
 		struct nvkm_object *this =
-			container_of(*ptr, typeof(*this), node);
+			rb_entry(*ptr, typeof(*this), node);
 		parent = *ptr;
 		if (object->object < this->object)
 			ptr = &parent->rb_left;
@@ -243,7 +243,7 @@ nvkm_client_search(struct nvkm_client *client, u64 handle)
 	struct rb_node *node = client->objroot.rb_node;
 	while (node) {
 		struct nvkm_object *object =
-			container_of(node, typeof(*object), node);
+			rb_entry(node, typeof(*object), node);
 		if (handle < object->object)
 			node = node->rb_left;
 		else
-- 
2.9.3

[PATCH] drm/nouveau/client: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 drivers/gpu/drm/nouveau/nvkm/core/client.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nvkm/core/client.c b/drivers/gpu/drm/nouveau/nvkm/core/client.c
index e194391..ab2ee14 100644
--- a/drivers/gpu/drm/nouveau/nvkm/core/client.c
+++ b/drivers/gpu/drm/nouveau/nvkm/core/client.c
@@ -221,7 +221,7 @@ nvkm_client_insert(struct nvkm_client *client, struct nvkm_object *object)
 
 	while (*ptr) {
 		struct nvkm_object *this =
-			container_of(*ptr, typeof(*this), node);
+			rb_entry(*ptr, typeof(*this), node);
 		parent = *ptr;
 		if (object->object < this->object)
 			ptr = &parent->rb_left;
@@ -243,7 +243,7 @@ nvkm_client_search(struct nvkm_client *client, u64 handle)
 	struct rb_node *node = client->objroot.rb_node;
 	while (node) {
 		struct nvkm_object *object =
-			container_of(node, typeof(*object), node);
+			rb_entry(node, typeof(*object), node);
 		if (handle < object->object)
 			node = node->rb_left;
 		else
-- 
2.9.3

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Re: [PATCH] drm/nouveau/client: use rb_entry()

[Ben Skeggs]

[-- Attachment #1.1.1: Type: text/plain, Size: 1416 bytes --]

On 01/21/2017 12:36 AM, Geliang Tang wrote:
> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
Hey Geliang,

Looks good, however, I've already got a patch handling this pending in
my tree.

Thank you!
Ben.

> 
> Signed-off-by: Geliang Tang <geliangtang-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> ---
>  drivers/gpu/drm/nouveau/nvkm/core/client.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/nouveau/nvkm/core/client.c b/drivers/gpu/drm/nouveau/nvkm/core/client.c
> index e194391..ab2ee14 100644
> --- a/drivers/gpu/drm/nouveau/nvkm/core/client.c
> +++ b/drivers/gpu/drm/nouveau/nvkm/core/client.c
> @@ -221,7 +221,7 @@ nvkm_client_insert(struct nvkm_client *client, struct nvkm_object *object)
>  
>  	while (*ptr) {
>  		struct nvkm_object *this =
> -			container_of(*ptr, typeof(*this), node);
> +			rb_entry(*ptr, typeof(*this), node);
>  		parent = *ptr;
>  		if (object->object < this->object)
>  			ptr = &parent->rb_left;
> @@ -243,7 +243,7 @@ nvkm_client_search(struct nvkm_client *client, u64 handle)
>  	struct rb_node *node = client->objroot.rb_node;
>  	while (node) {
>  		struct nvkm_object *object =
> -			container_of(node, typeof(*object), node);
> +			rb_entry(node, typeof(*object), node);
>  		if (handle < object->object)
>  			node = node->rb_left;
>  		else
> 


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[PATCH] net/mlx4: use rb_entry()

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
---
 drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 1822382..6da6e01 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -236,8 +236,8 @@ static void *res_tracker_lookup(struct rb_root *root, u64 res_id)
 	struct rb_node *node = root->rb_node;
 
 	while (node) {
-		struct res_common *res = container_of(node, struct res_common,
-						      node);
+		struct res_common *res = rb_entry(node, struct res_common,
+						  node);
 
 		if (res_id < res->res_id)
 			node = node->rb_left;
@@ -255,8 +255,8 @@ static int res_tracker_insert(struct rb_root *root, struct res_common *res)
 
 	/* Figure out where to put new node */
 	while (*new) {
-		struct res_common *this = container_of(*new, struct res_common,
-						       node);
+		struct res_common *this = rb_entry(*new, struct res_common,
+						   node);
 
 		parent = *new;
 		if (res->res_id < this->res_id)
-- 
2.9.3

Re: [PATCH] net/mlx4: use rb_entry()

[Leon Romanovsky]

[-- Attachment #1: Type: text/plain, Size: 1750 bytes --]

On Fri, Jan 20, 2017 at 10:36:57PM +0800, Geliang Tang wrote:
> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
>
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>
> ---
>  drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)

I don't understand completely the rationale behind this conversion.
rb_entry == container_of, why do we need another name for it?

>
> diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
> index 1822382..6da6e01 100644
> --- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
> +++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
> @@ -236,8 +236,8 @@ static void *res_tracker_lookup(struct rb_root *root, u64 res_id)
>  	struct rb_node *node = root->rb_node;
>
>  	while (node) {
> -		struct res_common *res = container_of(node, struct res_common,
> -						      node);
> +		struct res_common *res = rb_entry(node, struct res_common,
> +						  node);
>
>  		if (res_id < res->res_id)
>  			node = node->rb_left;
> @@ -255,8 +255,8 @@ static int res_tracker_insert(struct rb_root *root, struct res_common *res)
>
>  	/* Figure out where to put new node */
>  	while (*new) {
> -		struct res_common *this = container_of(*new, struct res_common,
> -						       node);
> +		struct res_common *this = rb_entry(*new, struct res_common,
> +						   node);
>
>  		parent = *new;
>  		if (res->res_id < this->res_id)
> --
> 2.9.3
>
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Re: [PATCH] net/mlx4: use rb_entry()

[Geliang Tang]

On Sun, Jan 22, 2017 at 09:48:39AM +0200, Leon Romanovsky wrote:
> On Fri, Jan 20, 2017 at 10:36:57PM +0800, Geliang Tang wrote:
> > To make the code clearer, use rb_entry() instead of container_of() to
> > deal with rbtree.
> >
> > Signed-off-by: Geliang Tang <geliangtang@gmail.com>
> > ---
> >  drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 8 ++++----
> >  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> I don't understand completely the rationale behind this conversion.
> rb_entry == container_of, why do we need another name for it?
> 

There are several *_entry macros which are defined in kernel data
structures, like list_entry, hlist_entry, rb_entry, etc. Each of them is
just another name for container_of. We use different *_entry so that we
could identify the specific type of data structure that we are dealing
with.

-Geliang

Re: [PATCH] net/mlx4: use rb_entry()

[Leon Romanovsky]

[-- Attachment #1: Type: text/plain, Size: 1186 bytes --]

On Sun, Jan 22, 2017 at 10:42:25PM +0800, Geliang Tang wrote:
> On Sun, Jan 22, 2017 at 09:48:39AM +0200, Leon Romanovsky wrote:
> > On Fri, Jan 20, 2017 at 10:36:57PM +0800, Geliang Tang wrote:
> > > To make the code clearer, use rb_entry() instead of container_of() to
> > > deal with rbtree.
> > >
> > > Signed-off-by: Geliang Tang <geliangtang@gmail.com>
> > > ---
> > >  drivers/net/ethernet/mellanox/mlx4/resource_tracker.c | 8 ++++----
> > >  1 file changed, 4 insertions(+), 4 deletions(-)
> >
> > I don't understand completely the rationale behind this conversion.
> > rb_entry == container_of, why do we need another name for it?
> >
>
> There are several *_entry macros which are defined in kernel data
> structures, like list_entry, hlist_entry, rb_entry, etc. Each of them is
> just another name for container_of. We use different *_entry so that we
> could identify the specific type of data structure that we are dealing
> with.

Your proposed patch doesn't support the importance of such knowledge for
rb_entry. The list_entry case is totally different, because you perform
operation on it.

Anyway, It doesn't matter.
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>

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Re: [PATCH] net/mlx4: use rb_entry()

[David Miller]

From: Leon Romanovsky <leon@kernel.org>
Date: Sun, 22 Jan 2017 09:48:39 +0200

> I don't understand completely the rationale behind this conversion.
> rb_entry == container_of, why do we need another name for it?

Because it's an annotation.

Either you agree that the macro exists and it should be used in
every spot where those types are being used, or you don't and
therefore argue for the macro and it's usage completely.

Re: [PATCH] net/mlx4: use rb_entry()

[David Miller]

From: Geliang Tang <geliangtang@gmail.com>
Date: Fri, 20 Jan 2017 22:36:57 +0800

> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
> 
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>

Applied.

✗ Fi.CI.BAT: failure for drm/i915/error: use rb_entry()

[Patchwork]

== Series Details ==

Series: drm/i915/error: use rb_entry()
URL   : https://patchwork.freedesktop.org/series/18298/
State : failure

== Summary ==

Series 18298v1 drm/i915/error: use rb_entry()
https://patchwork.freedesktop.org/api/1.0/series/18298/revisions/1/mbox/

Test gem_busy:
        Subgroup basic-busy-default:
                pass       -> FAIL       (fi-ivb-3520m)

fi-bdw-5557u     total:246  pass:232  dwarn:0   dfail:0   fail:0   skip:14 
fi-bsw-n3050     total:246  pass:207  dwarn:0   dfail:0   fail:0   skip:39 
fi-bxt-j4205     total:246  pass:224  dwarn:0   dfail:0   fail:0   skip:22 
fi-bxt-t5700     total:79   pass:66   dwarn:0   dfail:0   fail:0   skip:12 
fi-byt-j1900     total:246  pass:219  dwarn:0   dfail:0   fail:0   skip:27 
fi-byt-n2820     total:246  pass:215  dwarn:0   dfail:0   fail:0   skip:31 
fi-hsw-4770      total:246  pass:227  dwarn:0   dfail:0   fail:0   skip:19 
fi-hsw-4770r     total:246  pass:227  dwarn:0   dfail:0   fail:0   skip:19 
fi-ivb-3520m     total:246  pass:224  dwarn:0   dfail:0   fail:1   skip:21 
fi-ivb-3770      total:246  pass:225  dwarn:0   dfail:0   fail:0   skip:21 
fi-kbl-7500u     total:246  pass:225  dwarn:0   dfail:0   fail:0   skip:21 
fi-skl-6260u     total:246  pass:233  dwarn:0   dfail:0   fail:0   skip:13 
fi-skl-6700hq    total:246  pass:226  dwarn:0   dfail:0   fail:0   skip:20 
fi-skl-6700k     total:246  pass:222  dwarn:3   dfail:0   fail:0   skip:21 
fi-skl-6770hq    total:246  pass:233  dwarn:0   dfail:0   fail:0   skip:13 
fi-snb-2520m     total:246  pass:215  dwarn:0   dfail:0   fail:0   skip:31 
fi-snb-2600      total:246  pass:214  dwarn:0   dfail:0   fail:0   skip:32 

aa012aa081f6a6d2dd5a1df0f3c3736017df0d56 drm-tip: 2017y-01m-20d-09h-33m-30s UTC integration manifest
5d25acd drm/i915/error: use rb_entry()

== Logs ==

For more details see: https://intel-gfx-ci.01.org/CI/Patchwork_3558/
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Re: [PATCH] 6lowpan: use rb_entry()

[David Miller]

From: Geliang Tang <geliangtang@gmail.com>
Date: Fri, 20 Jan 2017 22:36:53 +0800

> To make the code clearer, use rb_entry() instead of container_of() to
> deal with rbtree.
> 
> Signed-off-by: Geliang Tang <geliangtang@gmail.com>

Applied.