* [PATCH 1/3] staging: android: ion: Remove unused members from ion_buffer
2017-05-17 8:15 [PATCH 0/3] staging: android: ion: Minor clean ups and fixes Archit Taneja
@ 2017-05-17 8:15 ` Archit Taneja
2017-05-17 8:15 ` [PATCH 2/3] staging: android: ion: Remove ION_FLAG_CACHED_NEEDS_SYNC Archit Taneja
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Archit Taneja @ 2017-05-17 8:15 UTC (permalink / raw)
To: labbott, sumit.semwal
Cc: devel, gregkh, Archit Taneja, linux-kernel, dri-devel
A few members in ion_buffer struct are unused after features
like page faulting, ion_handle and ion_client were removed.
Remove these members and the leftover references to them.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
---
drivers/staging/android/ion/ion.c | 2 --
drivers/staging/android/ion/ion.h | 14 --------------
2 files changed, 16 deletions(-)
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 03d3a4fce0e2..90ae6ce466ed 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -115,7 +115,6 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap,
buffer->dev = dev;
buffer->size = len;
- INIT_LIST_HEAD(&buffer->vmas);
INIT_LIST_HEAD(&buffer->attachments);
mutex_init(&buffer->lock);
mutex_lock(&dev->buffer_lock);
@@ -135,7 +134,6 @@ void ion_buffer_destroy(struct ion_buffer *buffer)
if (WARN_ON(buffer->kmap_cnt > 0))
buffer->heap->ops->unmap_kernel(buffer->heap, buffer);
buffer->heap->ops->free(buffer);
- vfree(buffer->pages);
kfree(buffer);
}
diff --git a/drivers/staging/android/ion/ion.h b/drivers/staging/android/ion/ion.h
index ace8416bd509..fa9ed81ab972 100644
--- a/drivers/staging/android/ion/ion.h
+++ b/drivers/staging/android/ion/ion.h
@@ -68,14 +68,6 @@ struct ion_platform_heap {
* @kmap_cnt: number of times the buffer is mapped to the kernel
* @vaddr: the kernel mapping if kmap_cnt is not zero
* @sg_table: the sg table for the buffer if dmap_cnt is not zero
- * @pages: flat array of pages in the buffer -- used by fault
- * handler and only valid for buffers that are faulted in
- * @vmas: list of vma's mapping this buffer
- * @handle_count: count of handles referencing this buffer
- * @task_comm: taskcomm of last client to reference this buffer in a
- * handle, used for debugging
- * @pid: pid of last client to reference this buffer in a
- * handle, used for debugging
*/
struct ion_buffer {
union {
@@ -92,13 +84,7 @@ struct ion_buffer {
int kmap_cnt;
void *vaddr;
struct sg_table *sg_table;
- struct page **pages;
- struct list_head vmas;
struct list_head attachments;
- /* used to track orphaned buffers */
- int handle_count;
- char task_comm[TASK_COMM_LEN];
- pid_t pid;
};
void ion_buffer_destroy(struct ion_buffer *buffer);
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH 2/3] staging: android: ion: Remove ION_FLAG_CACHED_NEEDS_SYNC
2017-05-17 8:15 [PATCH 0/3] staging: android: ion: Minor clean ups and fixes Archit Taneja
2017-05-17 8:15 ` [PATCH 1/3] staging: android: ion: Remove unused members from ion_buffer Archit Taneja
@ 2017-05-17 8:15 ` Archit Taneja
2017-05-17 8:15 ` [PATCH 3/3] staging: android: ion: Avoid calling free_duped_table() twice Archit Taneja
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: Archit Taneja @ 2017-05-17 8:15 UTC (permalink / raw)
To: labbott, sumit.semwal; +Cc: devel, gregkh, linux-kernel, dri-devel
The flag ION_FLAG_CACHED_NEEDS_SYNC isn't used anymore. Remove it.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
---
drivers/staging/android/uapi/ion.h | 6 ------
1 file changed, 6 deletions(-)
diff --git a/drivers/staging/android/uapi/ion.h b/drivers/staging/android/uapi/ion.h
index b76db1b2e197..d415589757e7 100644
--- a/drivers/staging/android/uapi/ion.h
+++ b/drivers/staging/android/uapi/ion.h
@@ -57,12 +57,6 @@ enum ion_heap_type {
*/
#define ION_FLAG_CACHED 1
-/*
- * mappings of this buffer will created at mmap time, if this is set
- * caches must be managed manually
- */
-#define ION_FLAG_CACHED_NEEDS_SYNC 2
-
/**
* DOC: Ion Userspace API
*
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
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^ permalink raw reply related [flat|nested] 6+ messages in thread* [PATCH 3/3] staging: android: ion: Avoid calling free_duped_table() twice
2017-05-17 8:15 [PATCH 0/3] staging: android: ion: Minor clean ups and fixes Archit Taneja
2017-05-17 8:15 ` [PATCH 1/3] staging: android: ion: Remove unused members from ion_buffer Archit Taneja
2017-05-17 8:15 ` [PATCH 2/3] staging: android: ion: Remove ION_FLAG_CACHED_NEEDS_SYNC Archit Taneja
@ 2017-05-17 8:15 ` Archit Taneja
2017-05-17 16:39 ` [PATCH 0/3] staging: android: ion: Minor clean ups and fixes Laura Abbott
2017-05-18 4:40 ` Sumit Semwal
4 siblings, 0 replies; 6+ messages in thread
From: Archit Taneja @ 2017-05-17 8:15 UTC (permalink / raw)
To: labbott, sumit.semwal; +Cc: devel, gregkh, linux-kernel, dri-devel
Currently, the duplicated sg table is freed in the detach() and
the error path of map_dma_buf() ion's dma_buf_ops.
If a call to dma_buf_map_attachment() fails, the importer is
expected to call dma_buf_detach() to remove the attachment. This
will result in us trying to free the duped sg table twice.
Don't call free_duped_table() in ion_map_dma_buf() to avoid this.
Signed-off-by: Archit Taneja <architt@codeaurora.org>
---
drivers/staging/android/ion/ion.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c
index 90ae6ce466ed..b483e1081309 100644
--- a/drivers/staging/android/ion/ion.c
+++ b/drivers/staging/android/ion/ion.c
@@ -268,20 +268,14 @@ static struct sg_table *ion_map_dma_buf(struct dma_buf_attachment *attachment,
{
struct ion_dma_buf_attachment *a = attachment->priv;
struct sg_table *table;
- int ret;
table = a->table;
if (!dma_map_sg(attachment->dev, table->sgl, table->nents,
- direction)){
- ret = -ENOMEM;
- goto err;
- }
- return table;
+ direction))
+ return ERR_PTR(-ENOMEM);
-err:
- free_duped_table(table);
- return ERR_PTR(ret);
+ return table;
}
static void ion_unmap_dma_buf(struct dma_buf_attachment *attachment,
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
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^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH 0/3] staging: android: ion: Minor clean ups and fixes
2017-05-17 8:15 [PATCH 0/3] staging: android: ion: Minor clean ups and fixes Archit Taneja
` (2 preceding siblings ...)
2017-05-17 8:15 ` [PATCH 3/3] staging: android: ion: Avoid calling free_duped_table() twice Archit Taneja
@ 2017-05-17 16:39 ` Laura Abbott
2017-05-18 4:40 ` Sumit Semwal
4 siblings, 0 replies; 6+ messages in thread
From: Laura Abbott @ 2017-05-17 16:39 UTC (permalink / raw)
To: Archit Taneja, sumit.semwal; +Cc: devel, gregkh, linux-kernel, dri-devel
On 05/17/2017 01:15 AM, Archit Taneja wrote:
> The recent ION clean ups introduced some leftover code that can be
> removed, and a bug that comes up if the call to dma_buf_map_attachment()
> from an importer fails. Fix these.
>
> Archit Taneja (3):
> staging: android: ion: Remove unused members from ion_buffer
> staging: android: ion: Remove ION_FLAG_CACHED_NEEDS_SYNC
> staging: android: ion: Avoid calling free_duped_table() twice
>
> drivers/staging/android/ion/ion.c | 14 +++-----------
> drivers/staging/android/ion/ion.h | 14 --------------
> drivers/staging/android/uapi/ion.h | 6 ------
> 3 files changed, 3 insertions(+), 31 deletions(-)
>
Acked-by: Laura Abbott <labbott@redhat.com>
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^ permalink raw reply [flat|nested] 6+ messages in thread* Re: [PATCH 0/3] staging: android: ion: Minor clean ups and fixes
2017-05-17 8:15 [PATCH 0/3] staging: android: ion: Minor clean ups and fixes Archit Taneja
` (3 preceding siblings ...)
2017-05-17 16:39 ` [PATCH 0/3] staging: android: ion: Minor clean ups and fixes Laura Abbott
@ 2017-05-18 4:40 ` Sumit Semwal
4 siblings, 0 replies; 6+ messages in thread
From: Sumit Semwal @ 2017-05-18 4:40 UTC (permalink / raw)
To: Archit Taneja; +Cc: devel, Greg Kroah-Hartman, LKML, DRI mailing list
Hi Archit,
On 17 May 2017 at 13:45, Archit Taneja <architt@codeaurora.org> wrote:
> The recent ION clean ups introduced some leftover code that can be
> removed, and a bug that comes up if the call to dma_buf_map_attachment()
> from an importer fails. Fix these.
>
> Archit Taneja (3):
> staging: android: ion: Remove unused members from ion_buffer
> staging: android: ion: Remove ION_FLAG_CACHED_NEEDS_SYNC
> staging: android: ion: Avoid calling free_duped_table() twice
>
Thanks for these patches! Please feel free to add my
Reviewed-by: Sumit Semwal <sumit.semwal@linaro.org>
> drivers/staging/android/ion/ion.c | 14 +++-----------
> drivers/staging/android/ion/ion.h | 14 --------------
> drivers/staging/android/uapi/ion.h | 6 ------
> 3 files changed, 3 insertions(+), 31 deletions(-)
>
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> hosted by The Linux Foundation
>
Best,
Sumit.
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^ permalink raw reply [flat|nested] 6+ messages in thread