99 lines
4.2 KiB
Plaintext
99 lines
4.2 KiB
Plaintext
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This document lists details for the device specific sysfs attributes
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created by the KGSL GPU driver.
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- /sys/devices/platform/kgsl/vmalloc
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The total amount of vmalloc()ed memory currently allocated by the driver
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(in bytes)
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- /sys/devices/platform/kgsl/vmalloc_max
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The maximum amount of vmalloc()ed memory allocated at any one
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time by the driver since the system was booted (in bytes)
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- /sys/devices/platform/kgsl/coherent
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The total amount of coherent DMA memory currently allocated by the driver
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(in bytes)
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- /sys/devices/platform/kgsl/coherent_max
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The maximum amount of coherent DMA memory allocated at any one
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time by the driver since the system was booted (in bytes)
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- /sys/devices/platform/kgsl/histogram
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A histogram of the sizes of vmalloc allocations by the driver
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since the system was booted. The allocations are grouped by the order
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of the allocation size in pages. For example, order 0 are 1 page
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allocations, order 1 are 2 page allocations, order 2 are 4 page allocations,
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and so forth, up to order 16 (32768) pages.
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- /sys/devices/platform/kgsl/proc
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This directory contains individual entries for each active rendering
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process. Rendering instances are created for each unique process that
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opens the GPU devices, and are named for the id of the creating process.
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In the driver, memory allocations are owned by the process that allocates
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them, and outstanding memory is garbage collected when the process closes
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the device.
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- /sys/devices/platform/kgsl/proc/NN/vmalloc
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The total amount of vmalloc memory currently allocated by the process
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(in bytes)
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- /sys/devices/platform/kgsl/proc/NN/vmalloc_max
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The maximum amount of vmalloc memory allocated at any one
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time by the process since it was created (in bytes)
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- /sys/devices/platform/kgsl/proc/NN/exmem
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The total amount of external memory devices currently mapped by the process
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(in bytes). This includes PMEM, ASHMEM and external memory pointers from
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userspace.
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- /sys/devices/platform/kgsl/proc/NN/exmem_max
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The maximum amount of external memory devices allocated at any one
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time by the process since it was created (in bytes). This includes PMEM,
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ASHMEM and external memory pointers from userspace.
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- /sys/devices/platform/kgsl/proc/NN/flushes
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The total number of cache flushes performed by this process since it
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was created.
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- /sys/devices/platform/kgsl/pagetables
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This directory contains individual entries for each active pagetable.
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There will always be a global pagetable with ID 0. If per-process
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pagetables are not enabled, pagetable ID 0 will also be the default
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pagetable for all processes. If per-process pagetables are enabled,
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there will be an entry for each pagetable, named after the ID of the
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process that created it.
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- /sys/devices/platform/kgsl/pagetables/NN/entries
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The number of concurrent entries mapped in the GPU MMU.
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- /sys/devices/platform/kgsl/pagetables/NN/mapped
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The number of bytes currently mapped in the GPU MMU.
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- /sys/devices/platform/kgsl/pagetables/NN/va_range
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The virtual address size of the MMU pagetable (in bytes).
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- /sys/devices/platform/kgsl/pagetables/NN/max_mapped
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The maximum number of bytes concurrently mapped in the GPU MMU since
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the pagetable was created.
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- /sys/devices/platform/kgsl/pagetables/NN/max_entries
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The maximum number of entries concurrently mapped in the GPU MMU since
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the pagetable was created.
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- /sys/devices/platform/kgsl/msm_kgsl/
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Each individual GPU device (2D or 3D) will have its own device node in
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this directory. All platforms will have kgsl-3d0 (3D device), some
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devices may have 1 2D device (kgsl-2d0) and others might add a second 2D
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device (kgsl-2d1).
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- /sys/devices/platform/kgsl/msm_kgsl/kgsl-XXX/pwrnap
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Controls the system ability to nap (lightly sleep between frames). 1
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indicates napping is enabled, 0 indicates it is disabled. Write a 1 or
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a 0 to the file to control napping.
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- /sys/devices/platform/kgsl/msm_kgsl/kgsl-XXX/gpuclk
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Shows the last active requested speed of the GPU clock in HZ, does not
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actually measure the current clock rate. Write a clock speed to the file
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corresponding to a supported platform power level to change to that power
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level. The bandwidth vote will also be adjusted.
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