linux-kernel - Re: [PATCH v0 3/5] perf: Introduce instruction trace filtering

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]

Date:	Fri, 11 Dec 2015 15:02:01 +0100
From:	Peter Zijlstra <peterz@...radead.org>
To:	Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:	Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
	vince@...ter.net, eranian@...gle.com,
	Arnaldo Carvalho de Melo <acme@...radead.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	mark.rutland@....com
Subject: Re: [PATCH v0 3/5] perf: Introduce instruction trace filtering

On Fri, Dec 11, 2015 at 03:36:36PM +0200, Alexander Shishkin wrote:

> The pmu driver interface basically adds an extra callback to the
> pmu driver structure, which validates the filter configuration proposed
> by the user against what the hardware is actually capable of doing
> and translates it into something that pmu::start can program into
> hardware.

> @@ -388,12 +393,38 @@ struct pmu {
>  	void (*free_aux)		(void *aux); /* optional */
>  
>  	/*
> +	 * Validate instruction tracing filters: make sure hw supports the
> +	 * requested configuration and number of filters.
> +	 *
> +	 * Configure instruction tracing filters: translate hw-agnostic filter
> +	 * into hardware configuration in event::hw::itrace_filters
> +	 */
> +	int (*itrace_filter_setup)	(struct perf_event *event); /* optional */
> +
> +	/*
>  	 * Filter events for PMU-specific reasons.
>  	 */
>  	int (*filter_match)		(struct perf_event *event); /* optional */
>  };

Any reason you cannot use pmu::filter_match ?
--
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/