From: Mike Leach <mike.leach@linaro.org>
To: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Coresight ML <coresight@lists.linaro.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
"Suzuki K. Poulose" <suzuki.poulose@arm.com>,
Leo Yan <leo.yan@linaro.org>
Subject: Re: [RFC PATCH 0/8] coresight: syscfg: dynamic load, resource management
Date: Thu, 13 May 2021 17:53:36 +0100 [thread overview]
Message-ID: <CAJ9a7Vjjrzwv-1T9OoVR9sUOFdDgjwH_Px=0Xade9fGwWvwa8g@mail.gmail.com> (raw)
In-Reply-To: <20210513155633.GA225418@xps15>
Hi Mathieu,
On Thu, 13 May 2021 at 16:56, Mathieu Poirier
<mathieu.poirier@linaro.org> wrote:
>
> Hey Mike,
>
> On Wed, May 12, 2021 at 10:17:44PM +0100, Mike Leach wrote:
> > This patchset represents the second phase of CoreSight configuration
> > management.
> >
> > 1) API updated to allow dynamic load and unload of configurations and
> > features. Dependency management between loaded sets is added.
> >
> > 2) New configuration and feature sets can be added using a loadable module.
> > An example in /samples/coresight is provided to demonstrate this.
> >
>
> I tried to compile the sample module and I get:
>
> samples/coresight/coresight-cfg-sample.c:7:10: fatal error: coresight-config.h: No such file or directory
> #include "coresight-config.h"
> ^~~~~~~~~~~~~~~~~~~~
> compilation terminated.
>
> Can you reproduce on your side?
>
No problem here. I cleaned and rechecked I had the sample selected in
my .config (CONFIG_SAMPLE_CORESIGHT_SYSCFG=m) and it built just fine.
Regards
Mike
> Thanks,
> Mathieu
>
> > 3) Resource management API is added. This allows the system to ensure that
> > loaded configurations and features are only loaded onto devices that can
> > support them.
> >
> > Further - it ensures that configurations with multiple features cannot over
> > allocate resources.
> >
> > 4) configfs can be used to activate a configuration which will then be used
> > when controlling tracing using sysfs.
> >
> > 5) Resource management is added to ETMv4 configurations. This allows current
> > and future features and configurations to be defined in terms of resources
> > used as well as registers to be programmed.
> >
> > Defining features in this way allows the resource management to operate
> > correctly.
> >
> > The perf event parsing is also adjusted to allow the ETM resources requested
> > on the command line (e.g. address filters, etc) to be correctly handled
> > using resoruce management alongside the complex configurations such as
> > autofdo.
> >
> > Applies to coresight/next - which is 5.13-rc1 + initial Coresight configuration
> > patchset.
> >
> > To follow in future revisions / sets:-
> > a) load of additional config and features by configfs
> > b) ECT and CTI and other Coresight components support for configuration and
> > features.
> >
> >
> > Mike Leach (8):
> > coresight: syscfg: Update API to allow dynamic load and unload
> > coresight: syscfg: Update load API for config loadable modules
> > coresight: syscfg: Example CoreSight configuration loadable module
> > coresight: configfs: Allow configfs to activate configuration.
> > coresight: syscfg: Add API to check and validate device resources.
> > coresight: etm4x: syscfg: Add resource management to etm4x.
> > coresight: etm4x: Update perf event resource handling.
> > coresight: etm4x: Update configuration example.
> >
> > MAINTAINERS | 1 +
> > .../hwtracing/coresight/coresight-cfg-afdo.c | 38 +-
> > .../coresight/coresight-cfg-preload.c | 9 +-
> > .../hwtracing/coresight/coresight-config.c | 71 ++-
> > .../hwtracing/coresight/coresight-config.h | 45 +-
> > .../hwtracing/coresight/coresight-etm4x-cfg.c | 533 ++++++++++++++++++
> > .../hwtracing/coresight/coresight-etm4x-cfg.h | 196 ++++++-
> > .../coresight/coresight-etm4x-core.c | 250 +++-----
> > .../coresight/coresight-syscfg-configfs.c | 87 +++
> > .../coresight/coresight-syscfg-configfs.h | 4 +
> > .../hwtracing/coresight/coresight-syscfg.c | 390 +++++++++++--
> > .../hwtracing/coresight/coresight-syscfg.h | 38 +-
> > include/linux/coresight.h | 2 +
> > samples/Kconfig | 9 +
> > samples/Makefile | 1 +
> > samples/coresight/Makefile | 4 +
> > samples/coresight/coresight-cfg-sample.c | 73 +++
> > 17 files changed, 1511 insertions(+), 240 deletions(-)
> > create mode 100644 samples/coresight/Makefile
> > create mode 100644 samples/coresight/coresight-cfg-sample.c
> >
> > --
> > 2.17.1
> >
--
Mike Leach
Principal Engineer, ARM Ltd.
Manchester Design Centre. UK
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next prev parent reply other threads:[~2021-05-13 16:55 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 21:17 [RFC PATCH 0/8] coresight: syscfg: dynamic load, resource management Mike Leach
2021-05-12 21:17 ` [RFC PATCH 1/8] coresight: syscfg: Update API to allow dynamic load and unload Mike Leach
2021-05-17 17:15 ` Mathieu Poirier
2021-05-17 17:27 ` Mathieu Poirier
2021-05-19 13:28 ` Mike Leach
2021-05-12 21:17 ` [RFC PATCH 2/8] coresight: syscfg: Update load API for config loadable modules Mike Leach
2021-05-17 17:38 ` Mathieu Poirier
2021-05-12 21:17 ` [RFC PATCH 3/8] coresight: syscfg: Example CoreSight configuration loadable module Mike Leach
2021-05-18 15:52 ` Mathieu Poirier
2021-05-18 16:38 ` Mike Leach
2021-05-18 21:15 ` Mathieu Poirier
2021-05-12 21:17 ` [RFC PATCH 4/8] coresight: configfs: Allow configfs to activate configuration Mike Leach
2021-05-18 19:36 ` Mathieu Poirier
2021-05-19 9:47 ` Mike Leach
2021-05-12 21:17 ` [RFC PATCH 5/8] coresight: syscfg: Add API to check and validate device resources Mike Leach
2021-05-21 17:56 ` Mathieu Poirier
2021-07-08 16:30 ` Mike Leach
2021-05-12 21:17 ` [RFC PATCH 6/8] coresight: etm4x: syscfg: Add resource management to etm4x Mike Leach
2021-05-26 17:51 ` Mathieu Poirier
2021-05-27 17:41 ` Mathieu Poirier
2021-05-28 16:17 ` Mathieu Poirier
2021-07-09 9:32 ` Mike Leach
2021-05-12 21:17 ` [RFC PATCH 7/8] coresight: etm4x: Update perf event resource handling Mike Leach
2021-05-12 21:17 ` [RFC PATCH 8/8] coresight: etm4x: Update configuration example Mike Leach
2021-05-13 15:56 ` [RFC PATCH 0/8] coresight: syscfg: dynamic load, resource management Mathieu Poirier
2021-05-13 16:53 ` Mike Leach [this message]
2021-05-14 1:35 ` Leo Yan
2021-05-18 18:31 ` Suzuki K Poulose
2021-05-19 9:43 ` Mike Leach
2021-05-19 15:37 ` Mathieu Poirier
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