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path: root/drivers/gpu/nvgpu/include/nvgpu/vm.h
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* gpu: nvgpu: Clean up comptag data structs and allocSami Kiminki2017-11-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up the comptag-related data structures and allocation logic. The most important change is that we only ever try comptag allocation once to prevent incorrect map aliasing. If we were to retry the allocation on further map calls, the following situation would become possible: (1) Request compressible kind mapping for a buffer. Comptag alloc failed and we proceed with incompressible kind fallback. (2) Request another compressible kind mapping for a buffer. Comptag alloc retry succeeded and now we use the compressible kind. (3) After writes through the compressible kind mapping, the buffer is no longer legible via the fallback incompressible kind mapping. The other changes are about removing the unused comptag-related fields in gk20a_comptags and nvgpu_mapped_buf, and retrieving comptags info only for compressible buffers. We also make nvgpu_ctag_buffer_info and nvgpu_vm_compute_compression as private mm/vm.c definitions, since they're not used elsewhere. Bug 1902982 Change-Id: I0c9fe48ccc585a80dd2c05ec606a079c1c1d41f1 Signed-off-by: Sami Kiminki <skiminki@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1595153 GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add include path for rmos vm.hSourab Gupta2017-11-13
| | | | | | | | | | | | | | The patch adds include path for vm.h rmos header file. Change-Id: Ib686424381cd2a4af58d6ca737e9ce0863a9e6e5 Signed-off-by: Sourab Gupta <sourabg@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1589109 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: VM map path refactoringAlex Waterman2017-11-10
| | | | | | | | | | | | | | | | | | | | | | Final VM mapping refactoring. Move most of the logic in the VM map path to the common/mm/vm.c code and use the generic APIs previously implemented to deal with comptags and map caching. This also updates the mapped_buffer struct to finally be free of the Linux dma_buf and scatter gather table pointers. This is replaced with the nvgpu_os_buffer struct. JIRA NVGPU-30 JIRA NVGPU-71 JIRA NVGPU-224 Change-Id: If5b32886221c3e5af2f3d7ddd4fa51dd487bb981 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1583987 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add nvgpu_os_bufferAlex Waterman2017-11-10
| | | | | | | | | | | | | | | | | | | | | | | | | Add a generic nvgpu_os_buffer type, defined by each OS, to abstract a "user" buffer. This allows the comptag interface to be used in the core code. The end goal of this patch is to allow the OS specific mapping code to call a generic mapping function that handles most of the mapping logic. The problem is a lot of the logic involves comptags which are highly dependent on the operating systems buffer management scheme. With this, each OS can implement the buffer comptag mechanics however it wishes without the core MM code caring. JIRA NVGPU-30 JIRA NVGPU-223 Change-Id: Iaf64bc52e01ef3f262b4f8f9173a84384db7dc3e Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1583986 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Remove PTE kind logicSami Kiminki2017-11-10
| | | | | | | | | | | | | | | | Since NVGPU_AS_MAP_BUFFER_FLAGS_DIRECT_KIND_CTRL was made mandatory, kernel does not need to know the details about the PTE kinds anymore. Thus, we can remove the kind_gk20a.h header and the code related to kind table setup, as well as simplify buffer mapping code a bit. Bug 1902982 Change-Id: Iaf798023c219a64fb0a84da09431c5ce4bc046eb Signed-off-by: Sami Kiminki <skiminki@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1560933 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Remove buffer_attrs structAlex Waterman2017-11-01
| | | | | | | | | | | | | | | | | | | | Remove the buffer_attrs struct and replace it with a more streamlined nvgpu_ctag_buffer_info struct. This struct allows several different fields to all be passed by pointer to the various kind/compression functions in the VM map process. This path also moves several comptag/kind related functions to the core vm.c code since these functions can be reused by other OSes. Change-Id: I2a0f0a1c4b554ce4c8f2acdbe3161392e717d3bf Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1583984 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Remove user_mapped from mapped_bufAlex Waterman2017-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the always true field 'user_mapped' from the mapped_buf struct. All mapped_bufs are mapped by a user request since they always originate from a dma_buf (for Linux, that is). As such there is a fair amount of logic that could be deleted. Linux specific: the own_mem_ref field was also be deleted. The logic of only storing a dma_buf ref when the buffer is mapped for the first time by a user is easy: when the mapped buffer is found in the map cache release the outstanding dma_buf ref taken earlier on in the map path. If the map cache does not have the buffer simply let the higher level map code keep the dma_buf ref. The dma_buf ref is released when the nvgpu_vm_unmap_system() call-back is called by the unmap path. JIRA NVGPU-30 JIRA NVGPU-71 Change-Id: I229d136713812a7332bdadd5ebacd85d983bbbf0 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1583983 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: VM unmap refactoringAlex Waterman2017-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Re-organize the unmap code to be better split between OS specific requirements and common core requirements. The new code flow works as follows: nvgpu_vm_unmap() Is the primary entrance to the unmap path. It takes a VM and a GPU virtual address to unmap. There's also an optional batch mapping struct. This function is responsible for making sure there is a real buffer and that if it's being called on a fixed mapping then the mapping will definitely be freed (since buffers are ref-counted). Then this function decrements the ref-count and returns. If the ref-count hits zero then __nvgpu_vm_unmap_ref() is called which just calls __nvgpu_vm_unmap() with the relevant batch struct if present. This is where the real work is done. __nvgpu_vm_unmap() clears the GMMU mapping, removes the mapped buffer from the various lists and trees it may be in and then calls the nvgpu_vm_unmap_system() function. This function handles any OS specific stuff and must be defined by all VM OS implementations. There's a a short cut used by some other core VM code to free mappings without going through nvgpu_vm_map(). Mostly they just directly decrement the mapping ref-count which can then call __nvgpu_vm_unmap_ref() if the ref-count hits zero. JIRA NVGPU-30 JIRA NVGPU-71 Change-Id: Ic626d37ab936819841bab45214f027b40ffa4e5a Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1583982 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Begin reorganizing VM mapping/unmappingAlex Waterman2017-10-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move vm_priv.h to <nvgpu/linux/vm.h> and rename nvgpu_vm_map() to nvgpu_vm_map_linux(). Also remove a redundant unmap function from the unmap path. These changes are the beginning of reworking the nvgpu Linux mapping and unmapping code. The rest of this patch is just the necessary changes to use the new map function naming and the new path to the Linux vm header. Patch Series Goal ----------------- There's two major goals for this patch series. Note that these goals are not achieved in this patch. There will be subsequent patches. 1. Remove all last vestiges of Linux code from common/mm/vm.c 2. Implement map caching in the common/mm/vm.c code To accomplish this firstly the VM mapping code needs to have the struct nvgpu_mapped_buf data struct be completely Linux free. That means implementing an abstraction for this to hold the Linux stuff that mapped buffers carry about (SGT, dma_buf). This is why the vm_priv.h code has been moved: it will need to be included by the <nvgpu/vm.h> header so that the OS specific struct can be pulled into struct nvgpu_mapped_buf. Next renaming the nvgpu_vm_map() to nvgpu_vm_map_linux() is in preparation for adding a new nvgpu_vm_map() that handles the map caching with nvgpu_mapped_buf. The mapping code is fairly straight forward: nvgpu_vm_map does OS generic stuff; each OS then calls this function from an nvgpu_vm_map_<OS>() or the like that does any OS specific adjustments/management. Freeing buffers is much more tricky however. The maps are all reference counted since userspace does not track buffers and expects us to handle this instead. Ugh! Since there's ref-counts the free code will require a callback into the OS specific code since the OS specific code cannot free a buffer directly. THis make's the path for freeing a buffer quite convoluted. JIRA NVGPU-30 JIRA NVGPU-71 Change-Id: I5e0975f60663a0d6cf0a6bd90e099f51e02c2395 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1578896 GVS: Gerrit_Virtual_Submit Reviewed-by: David Martinez Nieto <dmartineznie@nvidia.com> Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Refactoring nvgpu_vm functionsAlex Waterman2017-10-18
| | | | | | | | | | | | | | | | | | | | Refactor the last nvgpu_vm functions from the mm_gk20a.c code. This removes some usages of dma_buf from the mm_gk20a.c code, too, which helps make mm_gk20a.c less Linux specific. Also delete some header files that are no longer necessary in gk20a/mm_gk20a.c which are Linux specific. The mm_gk20a.c code is now quite close to being Linux free. JIRA NVGPU-30 JIRA NVGPU-138 Change-Id: I72b370bd85a7b029768b0fb4827d6abba42007c3 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1566629 Reviewed-by: Konsta Holtta <kholtta@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: add syncpoint read mapseshendra Gadagottu2017-10-13
| | | | | | | | | | | | | | | | | | | | For sync-point read map: 1. Added nvgpu_mem memory allocator in gk20a struct and allocated memory for this in gk20a_finalize_poweron() and freed this memory in gk20a_remove(). 2. Added "u64 syncpt_ro_map_gpu_va" in vm_gk20a struct for read map in vm. Added nvgpu_quiesce() in nvgpu_remove() before freeing syncpoint read map to ensure that nvgpu is idle. JIRA GPUT19X-2 Change-Id: I7cbfec57f0992682dd833a1b0d92d694bcaf1eb3 Signed-off-by: seshendra Gadagottu <sgadagottu@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1514338 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Change license for common files to MITTerje Bergstrom2017-09-26
| | | | | | | | | | | | Change license of OS independent source code files to MIT. JIRA NVGPU-218 Change-Id: I1474065f4b552112786974a16cdf076c5179540e Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1565880 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Remove mapping of comptags to user VATerje Bergstrom2017-09-07
| | | | | | | | | | | | | | Remove the kernel feature to map compbit backing store areas to GPU VA. The feature is not used, and the relevant user space code is getting removed, too. Change-Id: I94f8bb9145da872694fdc5d3eb3c1365b2f47945 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1547898 Reviewed-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-by: Sami Kiminki <skiminki@nvidia.com> Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: Automatic_Commit_Validation_User
* gpu: nvgpu: Replace kref for refcounting in nvgpuDebarshi Dutta2017-08-24
| | | | | | | | | | | | | | | | - added wrapper struct nvgpu_ref over nvgpu_atomic_t - added nvgpu_ref_* APIs to access the above struct JIRA NVGPU-140 Change-Id: Id47f897995dd4721751f7610b6d4d4fbfe4d6b9a Signed-off-by: Debarshi Dutta <ddutta@nvidia.com> Reviewed-on: https://git-master.nvidia.com/r/1540899 Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com> Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
* gpu: nvgpu: gmmu programming rewriteAlex Waterman2017-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update the high level mapping logic. Instead of iterating over the GPU VA iterate over the scatter-gather table chunks. As a result each GMMU page table update call is simplified dramatically. This also modifies the chip level code to no longer require an SGL as an argument. Each call to the chip level code will be guaranteed to be contiguous so it only has to worry about making a mapping from virt -> phys. This removes the dependency on Linux that the chip code currently has. With this patch the core GMMU code still uses the Linux SGL but the logic is highly transferable to a different, nvgpu specific, scatter gather list format in the near future. The last major update is to push most of the page table attribute arguments to a struct. That struct is passed on through the various mapping levels. This makes the funtions calls more simple and easier to follow. JIRA NVGPU-30 Change-Id: Ibb6b11755f99818fe642622ca0bd4cbed054f602 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: https://git-master/r/1484104 Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> GVS: Gerrit_Virtual_Submit
* gpu: nvgpu: Remove extraneous VM init/deinit APIsAlex Waterman2017-06-06
| | | | | | | | | | | | | | | | | | | | Support only VM pointers and ref-counting for maintaining VMs. This dramatically reduces the complexity of the APIs, avoids the API abuse that has existed, and ensures that future VM usage is consistent with current usage. Also remove the combined VM free/instance block deletion. Any place where this was done is now replaced with an explict free of the instance block and a nvgpu_vm_put(). JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: Ib73e8d574ecc9abf6dad0b40a2c5795d6396cc8c Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1480227 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Unify vm_init for vGPU and regular GPUAlex Waterman2017-06-06
| | | | | | | | | | | | | | | | | Unify the initialization routines for the vGPU and regular GPU paths. This helps avoid any further code divergence. This also assumes that the code running on the regular GPU essentially works for the vGPU. The only addition is that the regular GPU path calls an API in the vGPU code that sends the necessary RM server message. JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: I37af1993fd8b50f666ae27524d382cce49cf28f7 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1480226 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Add and use VM init/deinit APIsAlex Waterman2017-05-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the VM init/de-init from the HAL and instead use a single set of routines that init/de-init VMs. This prevents code divergence between vGPUs and regular GPUs. This patch also clears up the naming of the routines a little bit. Since some VMs are used inplace and others are dynamically allocated the APIs for freeing them were confusing. Also some free calls also clean up an instance block (this is API abuse - but this is how it currently exists). The new API looks like this: void __nvgpu_vm_remove(struct vm_gk20a *vm); void nvgpu_vm_remove(struct vm_gk20a *vm); void nvgpu_vm_remove_inst(struct vm_gk20a *vm, struct nvgpu_mem *inst_block); void nvgpu_vm_remove_vgpu(struct vm_gk20a *vm); int nvgpu_init_vm(struct mm_gk20a *mm, struct vm_gk20a *vm, u32 big_page_size, u64 low_hole, u64 kernel_reserved, u64 aperture_size, bool big_pages, bool userspace_managed, char *name); void nvgpu_deinit_vm(struct vm_gk20a *vm); JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: Ia4016384c54746bfbcaa4bdd0d29d03d5d7f7f1b Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1477747 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Refactor VM init/cleanupAlex Waterman2017-05-26
| | | | | | | | | | | | | | | | | Refactor the API for initializing and cleaning up VMs. This also involved moving a bunch of GMMU code out into the gmmu code since part of initializing a VM involves initializing the page tables for the VM. JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: I4710f08c26a6e39806f0762a35f6db5c94b64c50 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1477746 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Refactor gk20a_vm_alloc_va()Alex Waterman2017-05-24
| | | | | | | | | | | | | | | | This function is an internal function to the VM manager that allocates virtual memory space in the GVA allocator. It is unfortunately used in the vGPU code, though. In any event, this patch cleans up and moves the implementation of these functions into the VM common code. JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: I24a3d29b5fcb12615df27d2ac82891d1bacfe541 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1477745 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Split vm_area management into vm codeAlex Waterman2017-05-19
| | | | | | | | | | | | | | | | | | | | | | | | | | The vm_reserve_va_node struct is essentially a special VM area that can be used for sparse mappings and fixed mappings. The name of this struct is somewhat confusing (as node is typically used for list items). Though this struct is a part of a list it doesn't really make sense to call this a list item since it's much more. Based on that the struct has been renamed to nvgpu_vm_area to capture the actual use of the struct more accurately. This also moves all of the management code of vm areas to a new file devoted solely to vm_area management. Also add a brief overview of the VM architecture. This should help other people follow along the hierachy of ownership and lifetimes in the rather complex MM code. JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: If85e1cf868031d0dc265e7bed50b58a2aed2602e Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1477744 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Split VM implementation outAlex Waterman2017-05-19
| | | | | | | | | | | | | | | | | | | | This patch begins splitting out the VM implementation from mm_gk20a.c and moves it to common/linux/vm.c and common/mm/vm.c. This split is necessary because the VM code has two portions: first, an interface for the OS specific code to use (i.e userspace mappings), and second, a set of APIs for the driver to use (init, cleanup, etc) which are not OS specific. This is only the beginning of the split - there's still a lot of things that need to be carefully moved around. JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: I3b57cba245d7daf9e4326a143b9c6217e0f28c96 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1477743 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Split VM interface outAlex Waterman2017-05-19
This patch begins the major rework of the GPU's virtual memory manager (VMM). The VMM is the piece of code that handles the userspace interface to buffers and their mappings into the GMMU. The core data structure is the VM - for now still known as 'struct vm_gk20a'. Each one of these structs represents one addres space to which channels or TSGs may bind themselves to. The VMM splits the interface up into two broad categories. First there's the common, OS independent interfaces; and second there's the OS specific interfaces. OS independent -------------- This is the code that manages the lifetime of VMs, the buffers inside VMs (search, batch mapping) creation, destruction, etc. OS Specific ----------- This handles mapping of buffers represented as they are represented by the OS (dma_buf's for example on Linux). This patch is by no means complete. There's still Linux specific functions scattered in ostensibly OS independent code. This is the first step. A patch that rewrites everything in one go would simply be too big to effectively review. Instead the goal of this change is to simply separate out the basic OS specific and OS agnostic interfaces into their own header files. The next series of patches will start to pull the relevant implementations into OS specific C files and common C files. JIRA NVGPU-12 JIRA NVGPU-30 Change-Id: I242c7206047b6c769296226d855b7e44d5c4bfa8 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1464939 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
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