mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: "gioh.kim" <gioh.kim@lge.com>
To: Randy Dunlap <rdunlap@infradead.org>,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: gunho.lee@lge.com, gioh.kim@lge.com
Subject: [PATCH] Documentation/DMA-API-HOWTO.txt: update API descriptions
Date: Mon, 12 May 2014 20:45:52 +0900	[thread overview]
Message-ID: <1399895153-29451-1-git-send-email-gioh.kim@lge.com> (raw)

From: "gioh.kim" <gioh.kim@lge.com>

update descriptions for dma_pool_create and dma_pool_alloc

Signed-off-by: Gioh Kim <gioh.kim@lge.com>
---
 Documentation/DMA-API-HOWTO.txt |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/DMA-API-HOWTO.txt b/Documentation/DMA-API-HOWTO.txt
index 5e98303..e4251a3 100644
--- a/Documentation/DMA-API-HOWTO.txt
+++ b/Documentation/DMA-API-HOWTO.txt
@@ -373,13 +373,13 @@ Create a dma_pool like this:
 
 	struct dma_pool *pool;
 
-	pool = dma_pool_create(name, dev, size, align, alloc);
+	pool = dma_pool_create(name, dev, size, align, boundary);
 
 The "name" is for diagnostics (like a kmem_cache name); dev and size
 are as above.  The device's hardware alignment requirement for this
 type of data is "align" (which is expressed in bytes, and must be a
 power of two).  If your device has no boundary crossing restrictions,
-pass 0 for alloc; passing 4096 says memory allocated from this pool
+pass 0 for boundary; passing 4096 says memory allocated from this pool
 must not cross 4KByte boundaries (but at that time it may be better to
 go for dma_alloc_coherent directly instead).
 
@@ -387,8 +387,8 @@ Allocate memory from a dma pool like this:
 
 	cpu_addr = dma_pool_alloc(pool, flags, &dma_handle);
 
-flags are SLAB_KERNEL if blocking is permitted (not in_interrupt nor
-holding SMP locks), SLAB_ATOMIC otherwise.  Like dma_alloc_coherent,
+flags are GFP_KERNEL if blocking is permitted (not in_interrupt nor
+holding SMP locks), GFP_ATOMIC otherwise.  Like dma_alloc_coherent,
 this returns two values, cpu_addr and dma_handle.
 
 Free memory that was allocated from a dma_pool like this:
-- 
1.7.9.5


             reply	other threads:[~2014-05-12 11:52 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-12 11:45 gioh.kim [this message]
2014-05-20 23:19 ` Bjorn Helgaas
2014-05-20 23:25   ` Gioh Kim

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1399895153-29451-1-git-send-email-gioh.kim@lge.com \
    --to=gioh.kim@lge.com \
    --cc=gunho.lee@lge.com \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=rdunlap@infradead.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox

all inboxes | Powered by JetHome®