From: Rabin Vincent <rabin@rab.in>
Date: Thu, 6 Nov 2014 21:26:07 +0000 (+0100)
Subject: tracing: Do not risk busy looping in buffer splice
X-Git-Tag: omap-for-v3.19/fixes-for-merge-window~130^2
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07906da78810dce5fd35b9449358c9208c693dca;p=pandora-kernel.git

tracing: Do not risk busy looping in buffer splice

If the read loop in trace_buffers_splice_read() keeps failing due to
memory allocation failures without reading even a single page then this
function will keep busy looping.

Remove the risk for that by exiting the function if memory allocation
failures are seen.

Link: http://lkml.kernel.org/r/1415309167-2373-2-git-send-email-rabin@rab.in

Signed-off-by: Rabin Vincent <rabin@rab.in>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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