linux-kernel - Re: [PATCH 21/22] perf tools: Add trace-event global object for tracepoint interface

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Date:	Wed, 27 Nov 2013 22:46:00 +0900
From:	Namhyung Kim <namhyung@...nel.org>
To:	Jiri Olsa <jolsa@...hat.com>
Cc:	linux-kernel@...r.kernel.org,
	Corey Ashford <cjashfor@...ux.vnet.ibm.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...e.hu>, Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	David Ahern <dsahern@...il.com>
Subject: Re: [PATCH 21/22] perf tools: Add trace-event global object for
 tracepoint interface

Hi Jiri,

2013-11-25 (월), 17:03 +0100, Jiri Olsa:
> On Sat, Nov 23, 2013 at 12:47:14AM +0900, Namhyung Kim wrote:
> > 2013-11-21 (목), 12:01 +0100, Jiri Olsa:
> > > In order to get the proper plugins processing we need to
> > > use full trace-event interface when creating tracepoint
> > > events. So far we were using shortcut to get the parsed
> > > format.
> > > 
> > > Moving current 'event_format__new' function into trace-event
> > > object as 'trace_event__tp_format'.
> > > 
> > > This function uses properly initialized global trace-event
> > > object, ensuring proper plugins processing.
> > 
> > I see this when I compile it on my old ubuntu 10.04 box (with gcc 4.4.3)
> > 
> >   CC       util/trace-event.o
> > cc1: warnings being treated as errors
> > util/trace-event.c: In function 'trace_event__tp_format':
> > util/trace-event.c:63: error: not protecting function: no buffer at
> > least 8 bytes long
> > make[1]: *** [util/trace-event.o] Error 1
> 
> hum, what was the stackprotector status?
> 
> ...                stackprotector: [ on  ]
> ...            stackprotector-all: [ on  ]

Right. Both of them were turned on.

Auto-detecting system features:
...                     backtrace: [ on  ]
...                         dwarf: [ on  ]
...                fortify-source: [ on  ]
...                         glibc: [ on  ]
...                          gtk2: [ on  ]
...                  gtk2-infobar: [ on  ]
...                      libaudit: [ on  ]
...                        libbfd: [ on  ]
...                        libelf: [ on  ]
...             libelf-getphdrnum: [ OFF ]
...                   libelf-mmap: [ on  ]
...                       libnuma: [ OFF ]
...                       libperl: [ on  ]
...                     libpython: [ on  ]
...             libpython-version: [ on  ]
...                      libslang: [ on  ]
...                     libunwind: [ OFF ]
...                       on-exit: [ on  ]
...                stackprotector: [ on  ]
...            stackprotector-all: [ on  ]
...                       timerfd: [ on  ]


Thanks,
Namhyung

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