Hi Shameer,
On 01/08/18 09:52, Shameerali Kolothum Thodi wrote:
Hi Lorenzo/Robin,
Just a gentle ping on this series. This is a v2 for smmu pmcg support
based on Neil Leeder's v1[1].
Thanks for picking this up - it's not gone unnoticed ;)
It'll take me a while to page all this stuff back in, so given where we
are in the cycle I was planning to review it once rc1 is out, hope
that's OK.
Cheers,
Robin.
Main changes include,
-an helper function to IORT to retrieve the associated SMMU info.
-MSI support to the PMU driver.
Please take a look and let me know your thoughts.
Thanks,
Shameer
[1]https://www.spinics.net/lists/arm-kernel/msg598591.html
-----Original Message-----
From: Linuxarm [mailto:linuxarm-boun...@huawei.com] On Behalf Of
Shameer Kolothum
Sent: 24 July 2018 12:45
To: lorenzo.pieral...@arm.com; robin.mur...@arm.com
Cc: mark.rutl...@arm.com; vkil...@codeaurora.org;
neil.m.lee...@gmail.com; pa...@codeaurora.org; will.dea...@arm.com;
rruig...@codeaurora.org; Linuxarm <linux...@huawei.com>; linux-
ker...@vger.kernel.org; linux-a...@vger.kernel.org; linux-arm-
ker...@lists.infradead.org
Subject: [PATCH v2 0/4] arm64 SMMUv3 PMU driver with IORT support
This adds a driver for the SMMUv3 PMU into the perf framework.
It includes an IORT update to support PM Counter Groups.
This is based on the initial work done by Neil Leeder[1]
SMMUv3 PMCG devices are named as arm_smmu_v3_x_pmcg_y where x
denotes the associated smmuv3 dev id(if any) and y denotes the
pmu dev id.
Usage example:
For common arch supported events:
perf stat -e arm_smmu_v3_0_pmcg_6/transaction,filter_enable=1,
filter_span=1,filter_stream_id=0x42/ -a pwd
For IMP DEF events:
perf stat -e arm_smmu_v3.0_pmcg.6/event=id/ -a pwd
Sanity tested on HiSilicon platform. Further testing on supported
platforms are very much welcome.
v1 --> v2
- Addressed comments from Robin.
- Added an helper to retrieve the associated smmu dev and named PMUs
to make the association visible to user.
- Added MSI support for overflow irq
[1]https://www.spinics.net/lists/arm-kernel/msg598591.html
Neil Leeder (2):
acpi: arm64: add iort support for PMCG
perf: add arm64 smmuv3 pmu driver
Shameer Kolothum (2):
acpi: arm64: iort helper to find the associated smmu of pmcg node
perf/smmuv3: Add MSI irq support
drivers/acpi/arm64/iort.c | 179 +++++++--
drivers/perf/Kconfig | 9 +
drivers/perf/Makefile | 1 +
drivers/perf/arm_smmuv3_pmu.c | 901
++++++++++++++++++++++++++++++++++++++++++
include/linux/acpi_iort.h | 4 +
5 files changed, 1063 insertions(+), 31 deletions(-)
create mode 100644 drivers/perf/arm_smmuv3_pmu.c
--
2.7.4
_______________________________________________
Linuxarm mailing list
linux...@huawei.com
http://hulk.huawei.com/mailman/listinfo/linuxarm
