linux-kernel - Re: [PATCH v2 08/11] powerpc/perf: add support for the hv gpci (get performance counter info) interface

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: <20140225033329.400E22C0331@ozlabs.org>
Date:	Tue, 25 Feb 2014 14:33:29 +1100 (EST)
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Cody P Schafer <cody@...ux.vnet.ibm.com>,
	Linux PPC <linuxppc-dev@...ts.ozlabs.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Ingo Molnar <mingo@...hat.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: Re: [PATCH v2 08/11] powerpc/perf: add support for the hv gpci (get performance counter info) interface

On Fri, 2014-14-02 at 22:02:12 UTC, Cody P Schafer wrote:
> This provides a basic link between perf and hv_gpci. Notably, it does
> not yet support transactions and does not list any events (they can
> still be manually composed).

Can you explain how the HV_CAPS stuff ends up looking.

I'm not against adding it, but I'd like to understand how we expect it to be
used a bit better.

cheers

> diff --git a/arch/powerpc/perf/hv-gpci.c b/arch/powerpc/perf/hv-gpci.c
> new file mode 100644
> index 0000000..1f5d96d
> --- /dev/null
> +++ b/arch/powerpc/perf/hv-gpci.c
> +
> +static struct pmu h_gpci_pmu = {
> +	.task_ctx_nr = perf_invalid_context,
> +
> +	.name = "hv_gpci",
> +	.attr_groups = attr_groups,
> +	.event_init  = h_gpci_event_init,
> +	.add         = h_gpci_event_add,
> +	.del         = h_gpci_event_del,
		     = h_gpci_event_stop,

> +	.start       = h_gpci_event_start,
> +	.stop        = h_gpci_event_stop,
> +	.read        = h_gpci_event_read,
		     = h_gpci_event_update

> +	.event_idx = perf_swevent_event_idx,
> +};


--
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/