From: Steven Rostedt <rostedt@goodmis.org>
To: Jiri Olsa <jolsa@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
David Ahern <dsahern@gmail.com>, Ingo Molnar <mingo@kernel.org>,
Namhyung Kim <namhyung@kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: [PATCH 10/10] perf script python: Fix string vs byte array resolving
Date: Tue, 12 Jul 2016 08:37:28 -0400 [thread overview]
Message-ID: <20160712083728.2c468986@gandalf.local.home> (raw)
In-Reply-To: <20160712081156.GB3392@krava>
On Tue, 12 Jul 2016 10:11:56 +0200
Jiri Olsa <jolsa@redhat.com> wrote:
> ---
> diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c
> index 75e9790ebb96..9f810e6c739a 100644
> --- a/tools/perf/util/scripting-engines/trace-event-python.c
> +++ b/tools/perf/util/scripting-engines/trace-event-python.c
> @@ -390,11 +390,13 @@ static int is_printable_array(char *p, unsigned int len)
> {
> unsigned int i;
>
> - for (i = 0; i < len; i++)
> + /* Exclude the last zero byte of string.. */
> + for (i = 0; i < len - 1; i++)
> if (!isprint(p[i]) && !isspace(p[i]))
> return 0;
>
> - return 1;
> + /* ... and check its presence in the last byte. */
> + return p[i] == 0;
> }
>
Of course this fails on:
is_printable_array(a, strlen(a));
because the last byte wont be 0. What about:
for (i = 0; i < len; i++)
if (!isprint(p[i]) && !isspace(p[i]))
break;
return i == len ||
(i == len - 1 && p[i] == 0);
-- Steve
next prev parent reply other threads:[~2016-07-12 12:37 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-10 11:07 [PATCH 00/10] perf python: Add support to access tracepoint fields Jiri Olsa
2016-07-10 11:07 ` [PATCH 01/10] perf tools: Make perf_evlist__event2evsel public Jiri Olsa
2016-07-13 7:24 ` [tip:perf/core] perf evlist: Make event2evsel public tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 02/10] perf tools: Introduce trace_event__tp_format_id function Jiri Olsa
2016-07-13 7:25 ` [tip:perf/core] perf tools: Introduce trace_event__tp_format_id() tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 03/10] perf python: Init perf_event_attr::size in perf.evsel constructor Jiri Olsa
2016-07-13 7:25 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 04/10] perf python: Fix pyrf_evlist__read_on_cpu event consuming Jiri Olsa
2016-07-13 7:26 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 05/10] perf python: Put perf.event objects into dictionary Jiri Olsa
2016-07-13 7:26 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 06/10] perf python: Add perf.tracepoint method Jiri Olsa
2016-07-13 7:27 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:07 ` [PATCH 07/10] perf python: Add struct evsel into struct pyrf_event Jiri Olsa
2016-07-13 7:27 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:08 ` [PATCH 08/10] perf python: Add support to resolve tracepoint fields Jiri Olsa
2016-07-13 7:27 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:08 ` [PATCH 09/10] perf python: Add tracepoint example Jiri Olsa
2016-07-13 7:28 ` [tip:perf/core] " tip-bot for Jiri Olsa
2016-07-10 11:08 ` [PATCH 10/10] perf script python: Fix string vs byte array resolving Jiri Olsa
2016-07-11 15:54 ` Steven Rostedt
2016-07-12 8:11 ` Jiri Olsa
2016-07-12 12:37 ` Steven Rostedt [this message]
2016-07-12 12:52 ` Jiri Olsa
2016-07-12 13:00 ` Steven Rostedt
2016-07-12 13:35 ` Jiri Olsa
2016-07-12 13:48 ` Steven Rostedt
2016-07-12 19:27 ` Arnaldo Carvalho de Melo
2016-07-12 19:48 ` Steven Rostedt
2016-07-13 9:06 ` Jiri Olsa
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