linux-kernel - [PATCH 0/4] mm: add dma_pool_zalloc() & pci_pool

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Date:	Wed, 15 Jul 2015 14:14:39 -0700
From:	"Sean O. Stalley" <sean.stalley@...el.com>
To:	corbet@....net, vinod.koul@...el.com, bhelgaas@...gle.com,
	Julia.Lawall@...6.fr, Gilles.Muller@...6.fr, nicolas.palix@...g.fr,
	mmarek@...e.cz
Cc:	sean.stalley@...el.com, akpm@...ux-foundation.org,
	bigeasy@...utronix.de, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org,
	linux-pci@...r.kernel.org, linux-mm@...ck.org,
	cocci@...teme.lip6.fr
Subject: [PATCH 0/4] mm: add dma_pool_zalloc() & pci_pool_zalloc()

Currently a call to dma_pool_alloc() with a ___GFP_ZERO flag returns
a non-zeroed memory region.

This patchset adds support for the ___GFP_ZERO flag to dma_pool_alloc(),
adds 2 wrapper functions for allocing zeroed memory from a pool, 
and provides a coccinelle script for finding & replacing instances of
dma_pool_alloc() followed by memset(0) with a single dma_pool_zalloc() call.

Sean O. Stalley (4):
  mm: Add support for __GFP_ZERO flag to dma_pool_alloc()
  mm: Add dma_pool_zalloc() call to DMA API
  pci: mm: Add pci_pool_zalloc() call
  coccinelle: mm: scripts/coccinelle/api/alloc/pool_zalloc-simple.cocci

 Documentation/DMA-API.txt                          |  7 ++
 include/linux/dmapool.h                            |  6 ++
 include/linux/pci.h                                |  2 +
 mm/dmapool.c                                       |  6 +-
 .../coccinelle/api/alloc/pool_zalloc-simple.cocci  | 84 ++++++++++++++++++++++
 5 files changed, 104 insertions(+), 1 deletion(-)
 create mode 100644 scripts/coccinelle/api/alloc/pool_zalloc-simple.cocci

-- 
1.9.1

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