[PATCH 0/4] mm: add dma_pool_zalloc() & pci_pool_zalloc()

From	"Sean O. Stalley" <sean.stalley@intel.com>
Newsgroups	linux.kernel
Subject	[PATCH 0/4] mm: add dma_pool_zalloc() & pci_pool_zalloc()
Date	2015-07-15 23:20 +0200
Message-ID	<pMCfU-2Uk-7@gated-at.bofh.it> (permalink)
Organization	linux.* mail to news gateway

Show all headers | View raw

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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 0/4] mm: add dma_pool_zalloc() & pci_pool_zalloc() "Sean O. Stalley" <sean.stalley@intel.com> - 2015-07-15 23:20 +0200
  [PATCH 1/4] mm: Add support for __GFP_ZERO flag to dma_pool_alloc() "Sean O. Stalley" <sean.stalley@intel.com> - 2015-07-15 23:20 +0200
    Re: [PATCH 1/4] mm: Add support for __GFP_ZERO flag to  dma_pool_alloc() Andrew Morton <akpm@linux-foundation.org> - 2015-07-15 23:30 +0200

csiph-web