linux-kernel - Re: [PATCH] perf_counter: tools: Rework event parsing

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

Message-ID: <20090701082457.GB25593@elte.hu>
Date:	Wed, 1 Jul 2009 10:24:57 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Paul Mackerras <paulus@...ba.org>
Cc:	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	linux-kernel@...r.kernel.org,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Mike Galbraith <efault@....de>,
	Thomas Gleixner <tglx@...utronix.de>,
	Frédéric Weisbecker <fweisbec@...il.com>
Subject: Re: [PATCH] perf_counter: tools: Rework event parsing


* Paul Mackerras <paulus@...ba.org> wrote:

> This reworks the parser for event descriptors to make it more
> consistent in what it accepts.  It is now structured as a recursive
> descent parser for the following grammar:
> 
> events		::= event ( ("," | space) space* event )*
> event		::= ( raw_event | numeric_event | symbolic_event |
> 		      generic_hw_event ) [ event_modifier ]
> raw_event	::= "r" hex_number
> numeric_event	::= number ":" number
> number		::= decimal_number | "0x" hex_number | "0" octal_number
> symbolic_event	::= string_from_event_symbols_array
> generic_hw_event::= cache_type ( "-" ( cache_op | cache_result ) )*
> event_modifier	::= ":" ( "u" | "k" | "h" )+

Very nice changes, thanks Paul!

	Ingo
--
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/