From: Howard Cochran <hcochran@lexmark.com>
Date: Fri, 1 Nov 2013 21:53:56 +0000 (-0400)
Subject: tools lib traceevent: Handle __print_hex(__get_dynamic_array(fieldname), len)
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~41^2~15^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b30f75eba27a9ab0704cbc501e9be3b025ce56fe;p=pandora-kernel.git

tools lib traceevent: Handle __print_hex(__get_dynamic_array(fieldname), len)

The kernel has a few events with a format similar to this excerpt:
        field:unsigned int len;     offset:12;      size:4; signed:0;
        field:__data_loc unsigned char[] data_array;  offset:16;      size:4; signed:0;
print fmt: "%s", __print_hex(__get_dynamic_array(data_array), REC->len)

trace-cmd could already parse that arg correctly, but print_str_arg()
was unable to handle the first parameter being a dynamic array. (It
just printed a "field not found" warning).

Teach print_str_arg's PRINT_HEX case to handle the nested
PRINT_DYNAMIC_ARRAY correctly. The output now matches the kernel's own
formatting for this case.

Signed-off-by: Howard Cochran <hcochran@lexmark.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lkml.kernel.org/r/1381503349-12271-1-git-send-email-hcochran@lexmark.com
[ Removed "polish compare", we don't do that here ]
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---

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