linux-kernel - Re: [PATCH] perf tool: report user-friendly error from timechart

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <524DA7D2.80302@gmail.com>
Date:	Thu, 03 Oct 2013 11:22:26 -0600
From:	David Ahern <dsahern@...il.com>
To:	Arnaldo Carvalho de Melo <acme@...stprotocols.net>
CC:	Ingo Molnar <mingo@...nel.org>,
	Ramkumar Ramachandra <artagnon@...il.com>,
	LKML <linux-kernel@...r.kernel.org>, Jiri Olsa <jolsa@...hat.com>
Subject: Re: [PATCH] perf tool: report user-friendly error from timechart

On 10/3/13 11:08 AM, Arnaldo Carvalho de Melo wrote:

> And is_valid_tracepoint() is a too big hammer, it traverses the whole
> directory looking for a match instead of plain build the path and do an
> access, its one of those things I need to ditch at some point. So far I
> just try to do a perf_evlist__add_newtp and if it fails, look at errno.

And a number of tracepoints depend on CONFIG settings so it is more than 
just looking at whether debugfs is mounted and accessible/readable. 
e.g., look at the message I put into perf-lock

David

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/