diff options
| author | Shuai Xue <xueshuai@linux.alibaba.com> | 2022-08-18 11:18:21 +0800 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2022-09-22 14:09:10 +0100 |
| commit | cf7b61073e4526caa247616f6fbb174cbd2a5366 (patch) | |
| tree | 3b4faefa89d698ea7d66967bedea2c81c9398d42 /drivers/perf/Kconfig | |
| parent | a6f92909d6bb59eafa004178983850a1b739e304 (diff) | |
| download | linux-cf7b61073e4526caa247616f6fbb174cbd2a5366.tar.bz2 | |
drivers/perf: add DDR Sub-System Driveway PMU driver for Yitian 710 SoC
Add the DDR Sub-System Driveway Performance Monitoring Unit (PMU) driver
support for Alibaba T-Head Yitian 710 SoC chip. Yitian supports DDR5/4
DRAM and targets cloud computing and HPC.
Each PMU is registered as a device in /sys/bus/event_source/devices, and
users can select event to monitor in each sub-channel, independently. For
example, ali_drw_21000 and ali_drw_21080 are two PMU devices for two
sub-channels of the same channel in die 0. And the PMU device of die 1 is
prefixed with ali_drw_400XXXXX, e.g. ali_drw_40021000.
Due to hardware limitation, one of DDRSS Driveway PMU overflow interrupt
shares the same irq number with MPAM ERR_IRQ. To register DDRSS PMU and
MPAM drivers successfully, add IRQF_SHARED flag.
Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Co-developed-by: Hongbo Yao <yaohongbo@linux.alibaba.com>
Signed-off-by: Hongbo Yao <yaohongbo@linux.alibaba.com>
Co-developed-by: Neng Chen <nengchen@linux.alibaba.com>
Signed-off-by: Neng Chen <nengchen@linux.alibaba.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Link: https://lore.kernel.org/r/20220818031822.38415-3-xueshuai@linux.alibaba.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/perf/Kconfig')
| -rw-r--r-- | drivers/perf/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/perf/Kconfig b/drivers/perf/Kconfig index 1e2d69453771..44c07ea487f4 100644 --- a/drivers/perf/Kconfig +++ b/drivers/perf/Kconfig @@ -183,6 +183,13 @@ config APPLE_M1_CPU_PMU Provides support for the non-architectural CPU PMUs present on the Apple M1 SoCs and derivatives. +config ALIBABA_UNCORE_DRW_PMU + tristate "Alibaba T-Head Yitian 710 DDR Sub-system Driveway PMU driver" + depends on ARM64 || COMPILE_TEST + help + Support for Driveway PMU events monitoring on Yitian 710 DDR + Sub-system. + source "drivers/perf/hisilicon/Kconfig" config MARVELL_CN10K_DDR_PMU |