From: Arnaldo Carvalho de Melo <acme@infradead.org>
To: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>,
linux-kernel@vger.kernel.org,
Adrian Hunter <adrian.hunter@intel.com>,
David Ahern <dsahern@gmail.com>,
Frederic Weisbecker <fweisbec@gmail.com>,
Ingo Molnar <mingo@redhat.com>, Jiri Olsa <jolsa@redhat.com>,
Mike Galbraith <efault@gmx.de>, Namhyung Kim <namhyung@gmail.com>,
Paul Mackerras <paulus@samba.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Stephane Eranian <eranian@google.com>
Subject: Re: [PATCH 01/38] perf tools: Use asprintf instead of malloc plus snprintf
Date: Thu, 12 Dec 2013 11:57:57 -0300 [thread overview]
Message-ID: <20131212145757.GB8164@ghostprotocols.net> (raw)
In-Reply-To: <20131211221650.GP22695@tassilo.jf.intel.com>
Em Wed, Dec 11, 2013 at 02:16:50PM -0800, Andi Kleen escreveu:
> On Wed, Dec 04, 2013 at 05:06:25PM -0300, Arnaldo Carvalho de Melo wrote:
> > From: Adrian Hunter <adrian.hunter@intel.com>
> >
> > The asprintf library function is equivalent to malloc plus snprintf so
> > use it because it is simpler.
>
> I used to be very fond of asprintf too, but apparently there are some
> really ancient glibc versions that implement it incorrectly.
> I had to remove it from mcelog at some point because of that.
>
> No need to yank it out, but just to let you know.
Can you point me to some specific glibc version where this happens? So
that we can write a feature test and if this problem is detected, then
we can provide a simple malloc + snprintf alternative that works as
expected.
- Arnaldo
next prev parent reply other threads:[~2013-12-12 14:58 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-04 20:06 [GIT PULL 00/38] perf/core improvements and fixes Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 01/38] perf tools: Use asprintf instead of malloc plus snprintf Arnaldo Carvalho de Melo
2013-12-11 22:16 ` Andi Kleen
2013-12-12 14:57 ` Arnaldo Carvalho de Melo [this message]
2013-12-04 20:06 ` [PATCH 02/38] perf symbols: Retain bfd reference to lookup source line numbers Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 03/38] perf symbols: Retain symbol source file name " Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 04/38] perf tools: Do not disable source line lookup just because of 1 failure Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 05/38] perf tools: Remove stackprotector feature check Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 06/38] perf tools: Remove condition in machine__get_kernel_start_addr Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 07/38] perf target: Move the checking of which map function to call into function Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 08/38] perf kvm: Add more detail about buildid-list in man page Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 09/38] perf kvm: Fix spurious '=' use " Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 10/38] perf kvm: Update the 'record' man page entry for new --guest/--host behavior Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 11/38] perf symbols: Fix random fd closing with no libelf Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 12/38] perf script: Do not call perf_event__preprocess_sample() twice) Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 13/38] tools lib traceevent: Add plugin support Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 14/38] tools lib traceevent: Add plugin build support Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 15/38] tools lib traceevent: Add traceevent_host_bigendian function Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 16/38] tools lib traceevent: Change pevent_parse_format to include pevent handle Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 17/38] tools lib traceevent: Harmonize the install messages in lib-traceevent Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 18/38] perf tools: Add build and install plugins targets Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 19/38] perf tools: Add filename__read_str util function Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 20/38] perf tools: Add trace-event object Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 21/38] perf tools: Add trace-event global object for tracepoint interface Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 22/38] perf tools: Overload pr_stat traceevent print function Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 23/38] tools lib traceevent: Add jbd2 plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 24/38] tools lib traceevent: Add hrtimer plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 25/38] tools lib traceevent: Add kmem plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 26/38] tools lib traceevent: Add kvm plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 27/38] tools lib traceevent: Add mac80211 plugin Arnaldo Carvalho de Melo
2014-06-13 3:13 ` Steven Rostedt
2014-06-13 17:57 ` Johannes Berg
2014-06-13 18:18 ` Steven Rostedt
2013-12-04 20:06 ` [PATCH 28/38] tools lib traceevent: Add sched_switch plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 29/38] tools lib traceevent: Add function plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 30/38] tools lib traceevent: Add xen plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 31/38] tools lib traceevent: Add scsi plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 32/38] tools lib traceevent: Add cfg80211 plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 33/38] tools lib traceevent: Remove malloc_or_die from event-plugin.c Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 34/38] tools lib traceevent: Use static functions in jbd2 plugin Arnaldo Carvalho de Melo
2013-12-04 20:06 ` [PATCH 35/38] tools lib traceevent: Use pevent_print_func_field in hrtimer_start handler Arnaldo Carvalho de Melo
2013-12-04 20:07 ` [PATCH 36/38] tools lib traceevent: Several cleanups for function plugin Arnaldo Carvalho de Melo
2013-12-04 20:07 ` [PATCH 37/38] tools lib traceevent: Remove malloc_or_die from plugin_function.c Arnaldo Carvalho de Melo
2013-12-04 20:07 ` [PATCH 38/38] tools lib traceevent: Update kvm plugin with is_writable_pte helper Arnaldo Carvalho de Melo
2013-12-05 10:04 ` [GIT PULL 00/38] perf/core improvements and fixes Ingo Molnar
2013-12-05 10:37 ` Jiri Olsa
2013-12-05 10:53 ` Ingo Molnar
2013-12-05 10:59 ` Ingo Molnar
2013-12-05 11:13 ` Jiri Olsa
2013-12-05 12:27 ` Ingo Molnar
2013-12-05 12:35 ` Jiri Olsa
2013-12-05 11:05 ` Jiri Olsa
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