2008-07-29 20:18:42

by Randy Dunlap

[permalink] [raw]
Subject: Re: dma-coherent: add documentation to new interfaces

On Tue, 29 Jul 2008 03:01:07 GMT Linux Kernel Mailing List wrote:

> Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b6d4f7e3ef25beb8c658c97867d98883e69dc544
> Commit: b6d4f7e3ef25beb8c658c97867d98883e69dc544
> Parent: 8fa8b9fbab90c74139e8e868fe5b30b6a9f6be65
> Author: Dmitry Baryshkov <[email protected]>
> AuthorDate: Sun Jul 20 15:01:10 2008 +0400
> Committer: Ingo Molnar <[email protected]>
> CommitDate: Sun Jul 20 21:22:00 2008 +0200
>
> dma-coherent: add documentation to new interfaces

Hi,
Please fix these to be proper kernel-doc notation, as described in
Documentation/kernel-doc-nano-HOWTO.txt ...

> Signed-off-by: Dmitry Baryshkov <[email protected]>
> Cc: Jesse Barnes <[email protected]>
> Signed-off-by: Ingo Molnar <[email protected]>
> ---
> kernel/dma-coherent.c | 28 ++++++++++++++++++++++++++++
> 1 files changed, 28 insertions(+), 0 deletions(-)
>
> diff --git a/kernel/dma-coherent.c b/kernel/dma-coherent.c
> index 56dff5c..7517115 100644
> --- a/kernel/dma-coherent.c
> +++ b/kernel/dma-coherent.c
> @@ -92,6 +92,21 @@ void *dma_mark_declared_memory_occupied(struct device *dev,
> }
> EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
>
> +/**
> + * Try to allocate memory from the per-device coherent area.

Missing function name -

> + *
> + * @dev: device from which we allocate memory
> + * @size: size of requested memory area
> + * @dma_handle: This will be filled with the correct dma handle
> + * @ret: This pointer will be filled with the virtual address
> + * to allocated area.
> + *
> + * This function should be only called from per-arch %dma_alloc_coherent()
> + * to support allocation from per-device coherent memory pools.
> + *
> + * Returns 0 if dma_alloc_coherent should continue with allocating from
> + * generic memory areas, or !0 if dma_alloc_coherent should return %ret.

'%' is a constant-value prefix in kernel-doc.

> + */
> int dma_alloc_from_coherent(struct device *dev, ssize_t size,
> dma_addr_t *dma_handle, void **ret)
> {
> @@ -111,6 +126,19 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
> return (mem != NULL);
> }
>
> +/**
> + * Try to free the memory allocated from per-device coherent memory pool.

Missing function name -

> + * @dev: device from which the memory was allocated
> + * @order: the order of pages allocated
> + * @vaddr: virtual address of allocated pages
> + *
> + * This checks whether the memory was allocated from the per-device
> + * coherent memory pool and if so, releases that memory.
> + *
> + * Returns 1 if we correctly released the memory, or 0 if
> + * %dma_release_coherent() should proceed with releasing memory from

Drop the '%'.

> + * generic pools.
> + */
> int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
> {
> struct dma_coherent_mem *mem = dev ? dev->dma_mem : NULL;
> --


Thanks.

---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/


2008-07-30 10:47:52

by Dmitry Baryshkov

[permalink] [raw]
Subject: Re: dma-coherent: add documentation to new interfaces

On Tue, Jul 29, 2008 at 01:17:57PM -0700, Randy Dunlap wrote:
> On Tue, 29 Jul 2008 03:01:07 GMT Linux Kernel Mailing List wrote:
>
> > Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b6d4f7e3ef25beb8c658c97867d98883e69dc544
> > Commit: b6d4f7e3ef25beb8c658c97867d98883e69dc544
> > Parent: 8fa8b9fbab90c74139e8e868fe5b30b6a9f6be65
> > Author: Dmitry Baryshkov <[email protected]>
> > AuthorDate: Sun Jul 20 15:01:10 2008 +0400
> > Committer: Ingo Molnar <[email protected]>
> > CommitDate: Sun Jul 20 21:22:00 2008 +0200
> >
> > dma-coherent: add documentation to new interfaces
>
> Hi,
> Please fix these to be proper kernel-doc notation, as described in
> Documentation/kernel-doc-nano-HOWTO.txt ...

Please consider this patch:

>From 766159161001e2e118cc840e7aca4b8d500b1ebf Mon Sep 17 00:00:00 2001
From: Dmitry Baryshkov <[email protected]>
Date: Wed, 30 Jul 2008 01:41:58 +0400
Subject: [PATCH] dma-coherent: fix kernel-doc comments

Signed-off-by: Dmitry Baryshkov <[email protected]>
---
kernel/dma-coherent.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/kernel/dma-coherent.c b/kernel/dma-coherent.c
index 7517115..9ef28a0 100644
--- a/kernel/dma-coherent.c
+++ b/kernel/dma-coherent.c
@@ -93,7 +93,7 @@ void *dma_mark_declared_memory_occupied(struct device *dev,
EXPORT_SYMBOL(dma_mark_declared_memory_occupied);

/**
- * Try to allocate memory from the per-device coherent area.
+ * dma_alloc_from_coherent() - try to allocate memory from the per-device coherent area
*
* @dev: device from which we allocate memory
* @size: size of requested memory area
@@ -101,11 +101,11 @@ EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
* @ret: This pointer will be filled with the virtual address
* to allocated area.
*
- * This function should be only called from per-arch %dma_alloc_coherent()
+ * This function should be only called from per-arch dma_alloc_coherent()
* to support allocation from per-device coherent memory pools.
*
* Returns 0 if dma_alloc_coherent should continue with allocating from
- * generic memory areas, or !0 if dma_alloc_coherent should return %ret.
+ * generic memory areas, or !0 if dma_alloc_coherent should return @ret.
*/
int dma_alloc_from_coherent(struct device *dev, ssize_t size,
dma_addr_t *dma_handle, void **ret)
@@ -127,7 +127,7 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
}

/**
- * Try to free the memory allocated from per-device coherent memory pool.
+ * dma_release_from_coherent() - try to free the memory allocated from per-device coherent memory pool
* @dev: device from which the memory was allocated
* @order: the order of pages allocated
* @vaddr: virtual address of allocated pages
@@ -136,7 +136,7 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
* coherent memory pool and if so, releases that memory.
*
* Returns 1 if we correctly released the memory, or 0 if
- * %dma_release_coherent() should proceed with releasing memory from
+ * dma_release_coherent() should proceed with releasing memory from
* generic pools.
*/
int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
--
1.5.6.3

--
With best wishes
Dmitry

2008-07-30 14:28:52

by Randy Dunlap

[permalink] [raw]
Subject: Re: dma-coherent: add documentation to new interfaces

On Wed, 30 Jul 2008 14:46:50 +0400 Dmitry Baryshkov wrote:

> On Tue, Jul 29, 2008 at 01:17:57PM -0700, Randy Dunlap wrote:
> > On Tue, 29 Jul 2008 03:01:07 GMT Linux Kernel Mailing List wrote:
> >
> > > Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b6d4f7e3ef25beb8c658c97867d98883e69dc544
> > > Commit: b6d4f7e3ef25beb8c658c97867d98883e69dc544
> > > Parent: 8fa8b9fbab90c74139e8e868fe5b30b6a9f6be65
> > > Author: Dmitry Baryshkov <[email protected]>
> > > AuthorDate: Sun Jul 20 15:01:10 2008 +0400
> > > Committer: Ingo Molnar <[email protected]>
> > > CommitDate: Sun Jul 20 21:22:00 2008 +0200
> > >
> > > dma-coherent: add documentation to new interfaces
> >
> > Hi,
> > Please fix these to be proper kernel-doc notation, as described in
> > Documentation/kernel-doc-nano-HOWTO.txt ...
>
> Please consider this patch:

Looks good. Thanks.

Jesse or Ingo: will one of you merge this, please?


> >From 766159161001e2e118cc840e7aca4b8d500b1ebf Mon Sep 17 00:00:00 2001
> From: Dmitry Baryshkov <[email protected]>
> Date: Wed, 30 Jul 2008 01:41:58 +0400
> Subject: [PATCH] dma-coherent: fix kernel-doc comments
>
> Signed-off-by: Dmitry Baryshkov <[email protected]>
> ---
> kernel/dma-coherent.c | 10 +++++-----
> 1 files changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/kernel/dma-coherent.c b/kernel/dma-coherent.c
> index 7517115..9ef28a0 100644
> --- a/kernel/dma-coherent.c
> +++ b/kernel/dma-coherent.c
> @@ -93,7 +93,7 @@ void *dma_mark_declared_memory_occupied(struct device *dev,
> EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
>
> /**
> - * Try to allocate memory from the per-device coherent area.
> + * dma_alloc_from_coherent() - try to allocate memory from the per-device coherent area
> *
> * @dev: device from which we allocate memory
> * @size: size of requested memory area
> @@ -101,11 +101,11 @@ EXPORT_SYMBOL(dma_mark_declared_memory_occupied);
> * @ret: This pointer will be filled with the virtual address
> * to allocated area.
> *
> - * This function should be only called from per-arch %dma_alloc_coherent()
> + * This function should be only called from per-arch dma_alloc_coherent()
> * to support allocation from per-device coherent memory pools.
> *
> * Returns 0 if dma_alloc_coherent should continue with allocating from
> - * generic memory areas, or !0 if dma_alloc_coherent should return %ret.
> + * generic memory areas, or !0 if dma_alloc_coherent should return @ret.
> */
> int dma_alloc_from_coherent(struct device *dev, ssize_t size,
> dma_addr_t *dma_handle, void **ret)
> @@ -127,7 +127,7 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
> }
>
> /**
> - * Try to free the memory allocated from per-device coherent memory pool.
> + * dma_release_from_coherent() - try to free the memory allocated from per-device coherent memory pool
> * @dev: device from which the memory was allocated
> * @order: the order of pages allocated
> * @vaddr: virtual address of allocated pages
> @@ -136,7 +136,7 @@ int dma_alloc_from_coherent(struct device *dev, ssize_t size,
> * coherent memory pool and if so, releases that memory.
> *
> * Returns 1 if we correctly released the memory, or 0 if
> - * %dma_release_coherent() should proceed with releasing memory from
> + * dma_release_coherent() should proceed with releasing memory from
> * generic pools.
> */
> int dma_release_from_coherent(struct device *dev, int order, void *vaddr)
> --

---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/

2008-07-31 19:49:50

by Jesse Barnes

[permalink] [raw]
Subject: Re: dma-coherent: add documentation to new interfaces

On Wednesday, July 30, 2008 7:28 am Randy Dunlap wrote:
> On Wed, 30 Jul 2008 14:46:50 +0400 Dmitry Baryshkov wrote:
> > On Tue, Jul 29, 2008 at 01:17:57PM -0700, Randy Dunlap wrote:
> > > On Tue, 29 Jul 2008 03:01:07 GMT Linux Kernel Mailing List wrote:
> > > > Gitweb:
> > > > http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;
> > > >a=commit;h=b6d4f7e3ef25beb8c658c97867d98883e69dc544 Commit:
> > > > b6d4f7e3ef25beb8c658c97867d98883e69dc544
> > > > Parent: 8fa8b9fbab90c74139e8e868fe5b30b6a9f6be65
> > > > Author: Dmitry Baryshkov <[email protected]>
> > > > AuthorDate: Sun Jul 20 15:01:10 2008 +0400
> > > > Committer: Ingo Molnar <[email protected]>
> > > > CommitDate: Sun Jul 20 21:22:00 2008 +0200
> > > >
> > > > dma-coherent: add documentation to new interfaces
> > >
> > > Hi,
> > > Please fix these to be proper kernel-doc notation, as described in
> > > Documentation/kernel-doc-nano-HOWTO.txt ...
> >
> > Please consider this patch:
>
> Looks good. Thanks.
>
> Jesse or Ingo: will one of you merge this, please?

Just pushed it into my for-linus branch. I added your "Acked-by" too, thanks
for checking it out.

Jesse