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| author | Tuan Phan <tuanphan@os.amperecomputing.com> | 2020-11-04 11:30:43 -0800 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2020-11-25 14:51:21 +0000 |
| commit | 53c218da220c3619b5befec4674ffa35d590092a (patch) | |
| tree | 926aef730a5fcc1ca0a52bb9b4b7d187932c4c97 /drivers/perf/Kconfig | |
| parent | f8394f232b1eab649ce2df5c5f15b0e528c92091 (diff) | |
| download | linux-53c218da220c3619b5befec4674ffa35d590092a.tar.gz | |
driver/perf: Add PMU driver for the ARM DMC-620 memory controller
DMC-620 PMU supports total 10 counters which each is independently programmable to different events and can be started and stopped individually. Currently, it only supports ACPI. Other platforms feel free to test and add support for device tree. Usage example: #perf stat -e arm_dmc620_10008c000/clk_cycle_count/ -C 0 Get perf event for clk_cycle_count counter. #perf stat -e arm_dmc620_10008c000/clkdiv2_allocate,mask=0x1f,match=0x2f, incr=2,invert=1/ -C 0 The above example shows how to specify mask, match, incr, invert parameters for clkdiv2_allocate event. Reviewed-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Tuan Phan <tuanphan@os.amperecomputing.com> Link: https://lore.kernel.org/r/1604518246-6198-1-git-send-email-tuanphan@os.amperecomputing.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 130327ff0b0e..3075cf171f78 100644 --- a/drivers/perf/Kconfig +++ b/drivers/perf/Kconfig @@ -130,6 +130,13 @@ config ARM_SPE_PMU Extension, which provides periodic sampling of operations in the CPU pipeline and reports this via the perf AUX interface. +config ARM_DMC620_PMU + tristate "Enable PMU support for the ARM DMC-620 memory controller" + depends on (ARM64 && ACPI) || COMPILE_TEST + help + Support for PMU events monitoring on the ARM DMC-620 memory + controller. + source "drivers/perf/hisilicon/Kconfig" endmenu |