From: Julia Lawall <Julia.Lawall@inria.fr>
To: Bjorn Helgaas <bhelgaas@google.com>
Cc: kernel-janitors@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 14/14] PCI/P2PDMA: drop double zeroing
Date: Sun, 20 Sep 2020 13:26:26 +0200 [thread overview]
Message-ID: <1600601186-7420-15-git-send-email-Julia.Lawall@inria.fr> (raw)
In-Reply-To: <1600601186-7420-1-git-send-email-Julia.Lawall@inria.fr>
sg_init_table zeroes its first argument, so the allocation of that argument
doesn't have to.
the semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
expression x;
@@
x =
- kzalloc
+ kmalloc
(...)
...
sg_init_table(x,...)
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
---
drivers/pci/p2pdma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -u -p a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c
--- a/drivers/pci/p2pdma.c
+++ b/drivers/pci/p2pdma.c
@@ -762,7 +762,7 @@ struct scatterlist *pci_p2pmem_alloc_sgl
struct scatterlist *sg;
void *addr;
- sg = kzalloc(sizeof(*sg), GFP_KERNEL);
+ sg = kmalloc(sizeof(*sg), GFP_KERNEL);
if (!sg)
return NULL;
next prev parent reply other threads:[~2020-09-20 12:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-20 11:26 [PATCH 00/14] drop double zeroing Julia Lawall
2020-09-20 11:26 ` Julia Lawall [this message]
2020-09-28 22:24 ` [PATCH 14/14] PCI/P2PDMA: " Bjorn Helgaas
2020-09-21 16:58 ` [PATCH 00/14] " Mark Brown
2020-09-23 15:10 ` Rolf Reintjes
2020-09-23 15:16 ` Mark Brown
2020-10-13 22:42 ` Martin K. Petersen
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