diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-led-trigger-pattern | 4 | ||||
| -rw-r--r-- | Documentation/admin-guide/pm/cpufreq.rst | 2 | ||||
| -rw-r--r-- | Documentation/cpu-freq/cpufreq-stats.txt | 8 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/arm/shmobile.txt | 2 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/cpufreq/arm_big_little_dt.txt | 65 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt | 1 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/display/renesas,du.txt | 4 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-omap.txt | 8 | ||||
| -rw-r--r-- | Documentation/gpu/amdgpu-dc.rst | 68 | ||||
| -rw-r--r-- | Documentation/gpu/drivers.rst | 1 | ||||
| -rw-r--r-- | Documentation/gpu/drm-mm.rst | 4 | ||||
| -rw-r--r-- | Documentation/i2c/busses/i2c-nvidia-gpu | 18 | ||||
| -rw-r--r-- | Documentation/vm/unevictable-lru.rst | 6 | ||||
| -rw-r--r-- | Documentation/x86/x86_64/mm.txt | 34 | ||||
| -rw-r--r-- | Documentation/x86/zero-page.txt | 2 |
15 files changed, 133 insertions, 94 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-led-trigger-pattern b/Documentation/ABI/testing/sysfs-class-led-trigger-pattern index fb3d1e03b881..1e5d172e0646 100644 --- a/Documentation/ABI/testing/sysfs-class-led-trigger-pattern +++ b/Documentation/ABI/testing/sysfs-class-led-trigger-pattern @@ -37,8 +37,8 @@ Description: 0-| / \/ \/ +---0----1----2----3----4----5----6------------> time (s) - 2. To make the LED go instantly from one brigntess value to another, - we should use use zero-time lengths (the brightness must be same as + 2. To make the LED go instantly from one brightness value to another, + we should use zero-time lengths (the brightness must be same as the previous tuple's). So the format should be: "brightness_1 duration_1 brightness_1 0 brightness_2 duration_2 brightness_2 0 ...". For example: diff --git a/Documentation/admin-guide/pm/cpufreq.rst b/Documentation/admin-guide/pm/cpufreq.rst index 47153e64dfb5..7eca9026a9ed 100644 --- a/Documentation/admin-guide/pm/cpufreq.rst +++ b/Documentation/admin-guide/pm/cpufreq.rst @@ -150,7 +150,7 @@ data structures necessary to handle the given policy and, possibly, to add a governor ``sysfs`` interface to it. Next, the governor is started by invoking its ``->start()`` callback. -That callback it expected to register per-CPU utilization update callbacks for +That callback is expected to register per-CPU utilization update callbacks for all of the online CPUs belonging to the given policy with the CPU scheduler. The utilization update callbacks will be invoked by the CPU scheduler on important events, like task enqueue and dequeue, on every iteration of the diff --git a/Documentation/cpu-freq/cpufreq-stats.txt b/Documentation/cpu-freq/cpufreq-stats.txt index a873855c811d..14378cecb172 100644 --- a/Documentation/cpu-freq/cpufreq-stats.txt +++ b/Documentation/cpu-freq/cpufreq-stats.txt @@ -86,9 +86,11 @@ transitions. This will give a fine grained information about all the CPU frequency transitions. The cat output here is a two dimensional matrix, where an entry <i,j> (row i, column j) represents the count of number of transitions from -Freq_i to Freq_j. Freq_i is in descending order with increasing rows and -Freq_j is in descending order with increasing columns. The output here also -contains the actual freq values for each row and column for better readability. +Freq_i to Freq_j. Freq_i rows and Freq_j columns follow the sorting order in +which the driver has provided the frequency table initially to the cpufreq core +and so can be sorted (ascending or descending) or unsorted. The output here +also contains the actual freq values for each row and column for better +readability. If the transition table is bigger than PAGE_SIZE, reading this will return an -EFBIG error. diff --git a/Documentation/devicetree/bindings/arm/shmobile.txt b/Documentation/devicetree/bindings/arm/shmobile.txt index f5e0f82fd503..58c4256d37a3 100644 --- a/Documentation/devicetree/bindings/arm/shmobile.txt +++ b/Documentation/devicetree/bindings/arm/shmobile.txt @@ -27,7 +27,7 @@ SoCs: compatible = "renesas,r8a77470" - RZ/G2M (R8A774A1) compatible = "renesas,r8a774a1" - - RZ/G2E (RA8774C0) + - RZ/G2E (R8A774C0) compatible = "renesas,r8a774c0" - R-Car M1A (R8A77781) compatible = "renesas,r8a7778" diff --git a/Documentation/devicetree/bindings/cpufreq/arm_big_little_dt.txt b/Documentation/devicetree/bindings/cpufreq/arm_big_little_dt.txt deleted file mode 100644 index 2aa06ac0fac5..000000000000 --- a/Documentation/devicetree/bindings/cpufreq/arm_big_little_dt.txt +++ /dev/null @@ -1,65 +0,0 @@ -Generic ARM big LITTLE cpufreq driver's DT glue ------------------------------------------------ - -This is DT specific glue layer for generic cpufreq driver for big LITTLE -systems. - -Both required and optional properties listed below must be defined -under node /cpus/cpu@x. Where x is the first cpu inside a cluster. - -FIXME: Cpus should boot in the order specified in DT and all cpus for a cluster -must be present contiguously. Generic DT driver will check only node 'x' for -cpu:x. - -Required properties: -- operating-points: Refer to Documentation/devicetree/bindings/opp/opp.txt - for details - -Optional properties: -- clock-latency: Specify the possible maximum transition latency for clock, - in unit of nanoseconds. - -Examples: - -cpus { - #address-cells = <1>; - #size-cells = <0>; - - cpu@0 { - compatible = "arm,cortex-a15"; - reg = <0>; - next-level-cache = <&L2>; - operating-points = < - /* kHz uV */ - 792000 1100000 - 396000 950000 - 198000 850000 - >; - clock-latency = <61036>; /* two CLK32 periods */ - }; - - cpu@1 { - compatible = "arm,cortex-a15"; - reg = <1>; - next-level-cache = <&L2>; - }; - - cpu@100 { - compatible = "arm,cortex-a7"; - reg = <100>; - next-level-cache = <&L2>; - operating-points = < - /* kHz uV */ - 792000 950000 - 396000 750000 - 198000 450000 - >; - clock-latency = <61036>; /* two CLK32 periods */ - }; - - cpu@101 { - compatible = "arm,cortex-a7"; - reg = <101>; - next-level-cache = <&L2>; - }; -}; diff --git a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt index 3aeb0ec06fd0..ba5469dd09f3 100644 --- a/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt +++ b/Documentation/devicetree/bindings/display/bridge/renesas,lvds.txt @@ -13,6 +13,7 @@ Required properties: - "renesas,r8a7793-lvds" for R8A7793 (R-Car M2-N) compatible LVDS encoders - "renesas,r8a7795-lvds" for R8A7795 (R-Car H3) compatible LVDS encoders - "renesas,r8a7796-lvds" for R8A7796 (R-Car M3-W) compatible LVDS encoders + - "renesas,r8a77965-lvds" for R8A77965 (R-Car M3-N) compatible LVDS encoders - "renesas,r8a77970-lvds" for R8A77970 (R-Car V3M) compatible LVDS encoders - "renesas,r8a77980-lvds" for R8A77980 (R-Car V3H) compatible LVDS encoders - "renesas,r8a77990-lvds" for R8A77990 (R-Car E3) compatible LVDS encoders diff --git a/Documentation/devicetree/bindings/display/renesas,du.txt b/Documentation/devicetree/bindings/display/renesas,du.txt index 9de67be632d1..3c855d9f2719 100644 --- a/Documentation/devicetree/bindings/display/renesas,du.txt +++ b/Documentation/devicetree/bindings/display/renesas,du.txt @@ -4,7 +4,9 @@ Required Properties: - compatible: must be one of the following. - "renesas,du-r8a7743" for R8A7743 (RZ/G1M) compatible DU + - "renesas,du-r8a7744" for R8A7744 (RZ/G1N) compatible DU - "renesas,du-r8a7745" for R8A7745 (RZ/G1E) compatible DU + - "renesas,du-r8a77470" for R8A77470 (RZ/G1C) compatible DU - "renesas,du-r8a7779" for R8A7779 (R-Car H1) compatible DU - "renesas,du-r8a7790" for R8A7790 (R-Car H2) compatible DU - "renesas,du-r8a7791" for R8A7791 (R-Car M2-W) compatible DU @@ -52,7 +54,9 @@ corresponding to each DU output. Port0 Port1 Port2 Port3 ----------------------------------------------------------------------------- R8A7743 (RZ/G1M) DPAD 0 LVDS 0 - - + R8A7744 (RZ/G1N) DPAD 0 LVDS 0 - - R8A7745 (RZ/G1E) DPAD 0 DPAD 1 - - + R8A77470 (RZ/G1C) DPAD 0 DPAD 1 LVDS 0 - R8A7779 (R-Car H1) DPAD 0 DPAD 1 - - R8A7790 (R-Car H2) DPAD 0 LVDS 0 LVDS 1 - R8A7791 (R-Car M2-W) DPAD 0 LVDS 0 - - diff --git a/Documentation/devicetree/bindings/i2c/i2c-omap.txt b/Documentation/devicetree/bindings/i2c/i2c-omap.txt index 7e49839d4124..4b90ba9f31b7 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-omap.txt +++ b/Documentation/devicetree/bindings/i2c/i2c-omap.txt @@ -1,8 +1,12 @@ I2C for OMAP platforms Required properties : -- compatible : Must be "ti,omap2420-i2c", "ti,omap2430-i2c", "ti,omap3-i2c" - or "ti,omap4-i2c" +- compatible : Must be + "ti,omap2420-i2c" for OMAP2420 SoCs + "ti,omap2430-i2c" for OMAP2430 SoCs + "ti,omap3-i2c" for OMAP3 SoCs + "ti,omap4-i2c" for OMAP4+ SoCs + "ti,am654-i2c", "ti,omap4-i2c" for AM654 SoCs - ti,hwmods : Must be "i2c<n>", n being the instance number (1-based) - #address-cells = <1>; - #size-cells = <0>; diff --git a/Documentation/gpu/amdgpu-dc.rst b/Documentation/gpu/amdgpu-dc.rst new file mode 100644 index 000000000000..cc89b0fc11df --- /dev/null +++ b/Documentation/gpu/amdgpu-dc.rst @@ -0,0 +1,68 @@ +=================================== +drm/amd/display - Display Core (DC) +=================================== + +*placeholder - general description of supported platforms, what dc is, etc.* + +Because it is partially shared with other operating systems, the Display Core +Driver is divided in two pieces. + +1. **Display Core (DC)** contains the OS-agnostic components. Things like + hardware programming and resource management are handled here. +2. **Display Manager (DM)** contains the OS-dependent components. Hooks to the + amdgpu base driver and DRM are implemented here. + +It doesn't help that the entire package is frequently referred to as DC. But +with the context in mind, it should be clear. + +When CONFIG_DRM_AMD_DC is enabled, DC will be initialized by default for +supported ASICs. To force disable, set `amdgpu.dc=0` on kernel command line. +Likewise, to force enable on unsupported ASICs, set `amdgpu.dc=1`. + +To determine if DC is loaded, search dmesg for the following entry: + +``Display Core initialized with <version number here>`` + +AMDgpu Display Manager +====================== + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :doc: overview + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h + :internal: + +Lifecycle +--------- + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :doc: DM Lifecycle + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :functions: dm_hw_init dm_hw_fini + +Interrupts +---------- + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c + :doc: overview + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.c + :internal: + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :functions: register_hpd_handlers dm_crtc_high_irq dm_pflip_high_irq + +Atomic Implementation +--------------------- + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :doc: atomic + +.. kernel-doc:: drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c + :functions: amdgpu_dm_atomic_check amdgpu_dm_atomic_commit_tail + +Display Core +============ + +**WIP** diff --git a/Documentation/gpu/drivers.rst b/Documentation/gpu/drivers.rst index 7d2d3875ff1a..7c1672118a73 100644 --- a/Documentation/gpu/drivers.rst +++ b/Documentation/gpu/drivers.rst @@ -5,6 +5,7 @@ GPU Driver Documentation .. toctree:: amdgpu + amdgpu-dc i915 meson pl111 diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst index e725e8449e72..d0f3c6b03200 100644 --- a/Documentation/gpu/drm-mm.rst +++ b/Documentation/gpu/drm-mm.rst @@ -72,8 +72,8 @@ object TTM to provide a pool for buffer object allocation by clients and the kernel itself. The type of this object should be TTM_GLOBAL_TTM_BO, and its size should be sizeof(struct ttm_bo_global). Again, driver-specific init and release functions may -be provided, likely eventually calling ttm_bo_global_init() and -ttm_bo_global_release(), respectively. Also, like the previous +be provided, likely eventually calling ttm_bo_global_ref_init() and +ttm_bo_global_ref_release(), respectively. Also, like the previous object, ttm_global_item_ref() is used to create an initial reference count for the TTM, which will call your initialization function. diff --git a/Documentation/i2c/busses/i2c-nvidia-gpu b/Documentation/i2c/busses/i2c-nvidia-gpu new file mode 100644 index 000000000000..31884d2b2eb5 --- /dev/null +++ b/Documentation/i2c/busses/i2c-nvidia-gpu @@ -0,0 +1,18 @@ +Kernel driver i2c-nvidia-gpu + +Datasheet: not publicly available. + +Authors: + Ajay Gupta <ajayg@nvidia.com> + +Description +----------- + +i2c-nvidia-gpu is a driver for I2C controller included in NVIDIA Turing +and later GPUs and it is used to communicate with Type-C controller on GPUs. + +If your 'lspci -v' listing shows something like the following, + +01:00.3 Serial bus controller [0c80]: NVIDIA Corporation Device 1ad9 (rev a1) + +then this driver should support the I2C controller of your GPU. diff --git a/Documentation/vm/unevictable-lru.rst b/Documentation/vm/unevictable-lru.rst index fdd84cb8d511..b8e29f977f2d 100644 --- a/Documentation/vm/unevictable-lru.rst +++ b/Documentation/vm/unevictable-lru.rst @@ -143,7 +143,7 @@ using a number of wrapper functions: Query the address space, and return true if it is completely unevictable. -These are currently used in two places in the kernel: +These are currently used in three places in the kernel: (1) By ramfs to mark the address spaces of its inodes when they are created, and this mark remains for the life of the inode. @@ -154,6 +154,10 @@ These are currently used in two places in the kernel: swapped out; the application must touch the pages manually if it wants to ensure they're in memory. + (3) By the i915 driver to mark pinned address space until it's unpinned. The + amount of unevictable memory marked by i915 driver is roughly the bounded + object size in debugfs/dri/0/i915_gem_objects. + Detecting Unevictable Pages --------------------------- diff --git a/Documentation/x86/x86_64/mm.txt b/Documentation/x86/x86_64/mm.txt index 73aaaa3da436..804f9426ed17 100644 --- a/Documentation/x86/x86_64/mm.txt +++ b/Documentation/x86/x86_64/mm.txt @@ -34,23 +34,24 @@ __________________|____________|__________________|_________|___________________ ____________________________________________________________|___________________________________________________________ | | | | ffff800000000000 | -128 TB | ffff87ffffffffff | 8 TB | ... guard hole, also reserved for hypervisor - ffff880000000000 | -120 TB | ffffc7ffffffffff | 64 TB | direct mapping of all physical memory (page_offset_base) - ffffc80000000000 | -56 TB | ffffc8ffffffffff | 1 TB | ... unused hole + ffff880000000000 | -120 TB | ffff887fffffffff | 0.5 TB | LDT remap for PTI + ffff888000000000 | -119.5 TB | ffffc87fffffffff | 64 TB | direct mapping of all physical memory (page_offset_base) + ffffc88000000000 | -55.5 TB | ffffc8ffffffffff | 0.5 TB | ... unused hole ffffc90000000000 | -55 TB | ffffe8ffffffffff | 32 TB | vmalloc/ioremap space (vmalloc_base) ffffe90000000000 | -23 TB | ffffe9ffffffffff | 1 TB | ... unused hole ffffea0000000000 | -22 TB | ffffeaffffffffff | 1 TB | virtual memory map (vmemmap_base) ffffeb0000000000 | -21 TB | ffffebffffffffff | 1 TB | ... unused hole ffffec0000000000 | -20 TB | fffffbffffffffff | 16 TB | KASAN shadow memory - fffffc0000000000 | -4 TB | fffffdffffffffff | 2 TB | ... unused hole - | | | | vaddr_end for KASLR - fffffe0000000000 | -2 TB | fffffe7fffffffff | 0.5 TB | cpu_entry_area mapping - fffffe8000000000 | -1.5 TB | fffffeffffffffff | 0.5 TB | LDT remap for PTI - ffffff0000000000 | -1 TB | ffffff7fffffffff | 0.5 TB | %esp fixup stacks __________________|____________|__________________|_________|____________________________________________________________ | - | Identical layout to the 47-bit one from here on: + | Identical layout to the 56-bit one from here on: ____________________________________________________________|____________________________________________________________ | | | | + fffffc0000000000 | -4 TB | fffffdffffffffff | 2 TB | ... unused hole + | | | | vaddr_end for KASLR + fffffe0000000000 | -2 TB | fffffe7fffffffff | 0.5 TB | cpu_entry_area mapping + fffffe8000000000 | -1.5 TB | fffffeffffffffff | 0.5 TB | ... unused hole + ffffff0000000000 | -1 TB | ffffff7fffffffff | 0.5 TB | %esp fixup stacks ffffff8000000000 | -512 GB | ffffffeeffffffff | 444 GB | ... unused hole ffffffef00000000 | -68 GB | fffffffeffffffff | 64 GB | EFI region mapping space ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | ... unused hole @@ -83,7 +84,7 @@ Notes: __________________|____________|__________________|_________|___________________________________________________________ | | | | 0000800000000000 | +64 PB | ffff7fffffffffff | ~16K PB | ... huge, still almost 64 bits wide hole of non-canonical - | | | | virtual memory addresses up to the -128 TB + | | | | virtual memory addresses up to the -64 PB | | | | starting offset of kernel mappings. __________________|____________|__________________|_________|___________________________________________________________ | @@ -91,23 +92,24 @@ __________________|____________|__________________|_________|___________________ ____________________________________________________________|___________________________________________________________ | | | | ff00000000000000 | -64 PB | ff0fffffffffffff | 4 PB | ... guard hole, also reserved for hypervisor - ff10000000000000 | -60 PB | ff8fffffffffffff | 32 PB | direct mapping of all physical memory (page_offset_base) - ff90000000000000 | -28 PB | ff9fffffffffffff | 4 PB | LDT remap for PTI + ff10000000000000 | -60 PB | ff10ffffffffffff | 0.25 PB | LDT remap for PTI + ff11000000000000 | -59.75 PB | ff90ffffffffffff | 32 PB | direct mapping of all physical memory (page_offset_base) + ff91000000000000 | -27.75 PB | ff9fffffffffffff | 3.75 PB | ... unused hole ffa0000000000000 | -24 PB | ffd1ffffffffffff | 12.5 PB | vmalloc/ioremap space (vmalloc_base) ffd2000000000000 | -11.5 PB | ffd3ffffffffffff | 0.5 PB | ... unused hole ffd4000000000000 | -11 PB | ffd5ffffffffffff | 0.5 PB | virtual memory map (vmemmap_base) ffd6000000000000 | -10.5 PB | ffdeffffffffffff | 2.25 PB | ... unused hole ffdf000000000000 | -8.25 PB | fffffdffffffffff | ~8 PB | KASAN shadow memory - fffffc0000000000 | -4 TB | fffffdffffffffff | 2 TB | ... unused hole - | | | | vaddr_end for KASLR - fffffe0000000000 | -2 TB | fffffe7fffffffff | 0.5 TB | cpu_entry_area mapping - fffffe8000000000 | -1.5 TB | fffffeffffffffff | 0.5 TB | ... unused hole - ffffff0000000000 | -1 TB | ffffff7fffffffff | 0.5 TB | %esp fixup stacks __________________|____________|__________________|_________|____________________________________________________________ | | Identical layout to the 47-bit one from here on: ____________________________________________________________|____________________________________________________________ | | | | + fffffc0000000000 | -4 TB | fffffdffffffffff | 2 TB | ... unused hole + | | | | vaddr_end for KASLR + fffffe0000000000 | -2 TB | fffffe7fffffffff | 0.5 TB | cpu_entry_area mapping + fffffe8000000000 | -1.5 TB | fffffeffffffffff | 0.5 TB | ... unused hole + ffffff0000000000 | -1 TB | ffffff7fffffffff | 0.5 TB | %esp fixup stacks ffffff8000000000 | -512 GB | ffffffeeffffffff | 444 GB | ... unused hole ffffffef00000000 | -68 GB | fffffffeffffffff | 64 GB | EFI region mapping space ffffffff00000000 | -4 GB | ffffffff7fffffff | 2 GB | ... unused hole diff --git a/Documentation/x86/zero-page.txt b/Documentation/x86/zero-page.txt index 97b7adbceda4..68aed077f7b6 100644 --- a/Documentation/x86/zero-page.txt +++ b/Documentation/x86/zero-page.txt @@ -25,7 +25,7 @@ Offset Proto Name Meaning 0C8/004 ALL ext_cmd_line_ptr cmd_line_ptr high 32bits 140/080 ALL edid_info Video mode setup (struct edid_info) 1C0/020 ALL efi_info EFI 32 information (struct efi_info) -1E0/004 ALL alk_mem_k Alternative mem check, in KB +1E0/004 ALL alt_mem_k Alternative mem check, in KB 1E4/004 ALL scratch Scratch field for the kernel setup code 1E8/001 ALL e820_entries Number of entries in e820_table (below) 1E9/001 ALL eddbuf_entries Number of entries in eddbuf (below) |