From: Vaibhav Nagarnaik <vnagarnaik@google.com>
Date: Wed, 8 Jun 2011 00:01:42 +0000 (-0700)
Subject: ring-buffer: Set __GFP_NORETRY flag for ring buffer allocating process
X-Git-Tag: v3.1-rc1~299^2~13^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d7ec4bfed6c97405c6417970ba06c439e08ab8e3;p=pandora-kernel.git

ring-buffer: Set __GFP_NORETRY flag for ring buffer allocating process

The tracing ring buffer is allocated from kernel memory. While
allocating a large chunk of memory, OOM might happen which destabilizes
the system. Thus random processes might get killed during the
allocation.

This patch adds __GFP_NORETRY flag to the ring buffer allocation calls
to make it fail more gracefully if the system will not be able to
complete the allocation request.

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Vaibhav Nagarnaik <vnagarnaik@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Michael Rubin <mrubin@google.com>
Cc: David Sharp <dhsharp@google.com>
Link: http://lkml.kernel.org/r/1307491302-9236-1-git-send-email-vnagarnaik@google.com
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

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