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Subject: RE: [PATCH v7 0/4] add support for self monitoring
Date: Wed, 1 Feb 2023 14:51:29 +0100
Message-ID: <98CBD80474FA8B44BF855DF32C47DC35D876E8@smartserver.smartshare.dk>
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Thread-Topic: [PATCH v7 0/4] add support for self monitoring
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References: <20230119233916.4029128-1-tduszynski@marvell.com>
 <20230201131757.1787527-1-tduszynski@marvell.com>
From: =?iso-8859-1?Q?Morten_Br=F8rup?= <mb@smartsharesystems.com>
To: "Tomasz Duszynski" <tduszynski@marvell.com>,
	<dev@dpdk.org>
Cc: <roretzla@linux.microsoft.com>, <Ruifeng.Wang@arm.com>,
 <bruce.richardson@intel.com>, <jerinj@marvell.com>,
 <mattias.ronnblom@ericsson.com>, <thomas@monjalon.net>,
 <zhoumin@loongson.cn>
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> From: Tomasz Duszynski [mailto:tduszynski@marvell.com]
> Sent: Wednesday, 1 February 2023 14.18
>=20
> This series adds self monitoring support i.e allows to configure and
> read performance measurement unit (PMU) counters in runtime without
> using perf utility. This has certain adventages when application runs
> on
> isolated cores with nohz_full kernel parameter.
>=20
> Events can be read directly using rte_pmu_read() or using dedicated
> tracepoint rte_eal_trace_pmu_read(). The latter will cause events to =
be
> stored inside CTF file.
>=20
> By design, all enabled events are grouped together and the same group
> is attached to lcores that use self monitoring funtionality.
>=20
> Events are enabled by names, which need to be read from standard
> location under sysfs i.e
>=20
> /sys/bus/event_source/devices/PMU/events
>=20
> where PMU is a core pmu i.e one measuring cpu events. As of today
> raw events are not supported.

I like the modifications in v7.

Series-acked-by: Morten Br=F8rup <mb@smartsharesystems.com>