From: Daniel Vetter <daniel@ffwll.ch>
To: Chris Wilson <chris@chris-wilson.co.uk>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
Intel Graphics Development <intel-gfx@lists.freedesktop.org>
Subject: Re: [PATCH 2/5] drm/i915: Use kcalloc more
Date: Thu, 19 Sep 2013 13:53:53 +0200 [thread overview]
Message-ID: <20130919115353.GU32145@phenom.ffwll.local> (raw)
In-Reply-To: <20130919104655.GE6566@nuc-i3427.alporthouse.com>
On Thu, Sep 19, 2013 at 11:46:55AM +0100, Chris Wilson wrote:
> On Thu, Sep 19, 2013 at 12:18:33PM +0200, Daniel Vetter wrote:
> > No buffer overflows here, but better safe than sorry.
>
> You are also introducing needless memsets.
Meh, somehow I've thought kcalloc won't zero. I'll drop the redundant
GFP_ZEROs that Jani spotted and switch kcalloc to kmalloc_array in the
place we care about speed and want to avoid the memset.
-Daniel
--
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch
next prev parent reply other threads:[~2013-09-19 11:53 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-19 10:18 [PATCH 1/5] drm/i915: use pointer = k[cmz...]alloc(sizeof(*pointer), ...) pattern Daniel Vetter
2013-09-19 10:18 ` [PATCH 2/5] drm/i915: Use kcalloc more Daniel Vetter
2013-09-19 10:38 ` Jani Nikula
2013-09-19 10:50 ` Chris Wilson
2013-09-19 11:00 ` Jani Nikula
2013-09-19 11:12 ` Chris Wilson
2013-09-19 10:46 ` Chris Wilson
2013-09-19 11:53 ` Daniel Vetter [this message]
2013-09-19 12:06 ` [PATCH] " Daniel Vetter
2013-09-19 12:30 ` Chris Wilson
2013-09-19 12:35 ` Daniel Vetter
2013-09-19 12:41 ` Chris Wilson
2013-09-19 12:51 ` Daniel Vetter
2013-09-19 12:58 ` Chris Wilson
2013-09-20 22:37 ` Daniel Vetter
2013-09-19 13:40 ` Jani Nikula
2013-09-19 10:18 ` [PATCH 3/5] drm/i915: Ditch INTELFB_CONN_LIMIT Daniel Vetter
2013-09-19 10:53 ` Jani Nikula
2013-09-19 12:05 ` [PATCH] " Daniel Vetter
2013-09-19 13:32 ` Jani Nikula
2013-09-19 10:18 ` [PATCH 4/5] drm/i915: check for allocation overflow in error state capture Daniel Vetter
2013-09-20 23:39 ` Ben Widawsky
2013-09-19 10:18 ` [PATCH 5/5] drm/i915: Use unsigned for overflow checks in execbuf Daniel Vetter
2013-09-19 10:44 ` Chris Wilson
2013-09-19 12:00 ` [PATCH] " Daniel Vetter
2013-09-19 12:53 ` Daniel Vetter
2013-09-19 13:05 ` Chris Wilson
2013-09-19 10:46 ` [PATCH 5/5] " Jani Nikula
2013-09-19 10:34 ` [PATCH 1/5] drm/i915: use pointer = k[cmz...]alloc(sizeof(*pointer), ...) pattern Jani Nikula
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