From: Pekka Enberg <penberg@kernel.org>
Date: Tue, 15 Oct 2013 20:07:27 +0000 (+0300)
Subject: perf list: Show error if tracepoints not available
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~41^2~26^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f11cfc6f294dbd83b0d58037404df2bd16066238;p=pandora-kernel.git

perf list: Show error if tracepoints not available

Tracepoints are not visible in "perf list" on Fedora 19 because regular
users have no permission to /sys/kernel/debug by default. Show an error
message so that the user knows about it instead of assuming that
tracepoints are not supported on the system.

Signed-off-by: Pekka Enberg <penberg@kernel.org>
Acked-by: Ingo Molnar <mingo@kernel.org>
Cc: Ingo Molnar <mingo@kernel.org>
Link: http://lkml.kernel.org/r/1381867647-8594-1-git-send-email-penberg@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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