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path: root/drivers/gpu/nvgpu/gk20a/gk20a_allocator_page.c
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* gpu: nvgpu: Fix signed comparison bugsTerje Bergstrom2016-11-17
| | | | | | | | | | | | Fix small problems related to signed versus unsigned comparisons throughout the driver. Bump up the warning level to prevent such problems from occuring in future. Change-Id: I8ff5efb419f664e8a2aedadd6515ae4d18502ae0 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1252068 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: Do not access alloc after freeing itTerje Bergstrom2016-11-11
| | | | | | | | | | | | | Move debug write so that we access length and base of allocation before the alloc structure gets freed. Change-Id: I02e418f423beaa2b52a32d1abcff327b68dd5fa6 Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com> Reviewed-on: http://git-master/r/1249959 Reviewed-by: Automatic_Commit_Validation_User GVS: Gerrit_Virtual_Submit Reviewed-by: Alex Waterman <alexw@nvidia.com> Reviewed-by: Seema Khowala <seemaj@nvidia.com>
* gpu: nvgpu: Remove global debugfs variableAlex Waterman2016-10-26
| | | | | | | | | | | | | | | Remove a global debugfs variable and instead save the allocator debugfs root node in the gk20a struct. Bug 1799159 Change-Id: If4eed34fa24775e962001e34840b334658f2321c Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1225611 (cherry picked from commit 1908fde10bb1fb60ce898ea329f5a441a3e4297a) Reviewed-on: http://git-master/r/1242390 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: fix page alloc slab error conditionKonsta Holtta2016-10-20
| | | | | | | | | | | | | | | | | | | Return NULL instead of ERR_PTR from __gk20a_alloc_slab to be consistent with __gk20a_alloc_pages, and thus to work with an error check in gk20a_page_alloc in out-of-memory conditions. Bug 1799159 JIRA DNVGPU-100 Change-Id: I8c3c0e121840758c6aba860baac86a38e873e359 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/1227730 (cherry picked from commit 209927a6b3bae4fddc2a6a745c1b4b1f46c6675c) Reviewed-on: http://git-master/r/1235192 Reviewed-by: Alex Waterman <alexw@nvidia.com> Tested-by: Alex Waterman <alexw@nvidia.com> GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Fix coverity problemAlex Waterman2016-10-20
| | | | | | | | | | | | | | | | Coverity detected a possible overflow during the left shift. This is likely not a big problem, though, since the number of pages to allocate would have to be greater than 2^32 (that would be 4 TB of memory assuming 4k page size and the literal 1 being a signed int by default). Bug 1799159 Change-Id: Ie1d6522defd13c794eb95aeee8c5c4203db00ebf Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1238632 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Avoid 64 bit divisionAlex Waterman2016-10-18
| | | | | | | | | | | | | | | Avoid doing 64bit division in the page allocator. This causes problems on 32 bit platforms. Bug 1799159 Change-Id: I5166a71a4e84454686cce6d6cdca678a862a7ae7 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1236799 (cherry picked from commit 21c091d1c00433acb9965c3d348d16fbb4c50c1a) Reviewed-on: http://git-master/r/1236195 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: SLAB allocation for page allocatorAlex Waterman2016-10-18
| | | | | | | | | | | | | | | | | | Add the ability to do "SLAB" allocation in the page allocator. This is generally useful since the allocator manages 64K pages but often we only need 4k chunks (for example when allocating memory for page table entries). Bug 1799159 JIRA DNVGPU-100 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1225322 (cherry picked from commit 299a5639243e44be504391d9155b4ae17d914aa2) Change-Id: Ib3a8558d40ba16bd3a413f4fd38b146beaa3c66b Reviewed-on: http://git-master/r/1227924 Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com> Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
* gpu: nvgpu: add space query in page and buddy allocsKonsta Holtta2016-10-14
| | | | | | | | | | | | | | | | | | Amount of free space in the buddy allocator is computed from the complete capacity minus currently used bytes. The page allocator just queries its underlying allocator. Bug 1787771 Bug 200233138 Change-Id: I9b6f5ef90119236a13de14e14cd0a3ee72144a11 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/1223761 (cherry picked from commit 0b324a60ebdf67e793ade869c252a8ddd56c04f8) Reviewed-on: http://git-master/r/1235979 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Carveout support for the page allocatorAlex Waterman2016-09-20
| | | | | | | | | | | | | | | Implement carveout support by just calling through to the buddy allocator's carveout support. Jira DNVGPU-84 Change-Id: I1940873394a4cbff0152f1b6c9c4fd659e0076e1 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1203392 (cherry picked from commit 499ee0407bf525e161a14cfb8bbbc101ac934329) Reviewed-on: http://git-master/r/1223454 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: fix chunk size mismatch in page allocatorKonsta Holtta2016-09-14
| | | | | | | | | | | | | | | | | | | When allocating discontiguous memory composed of several chunks, update also the number of pages used by the current chunk, if a large chunk was not available and a retry is performed with a smaller one. Failing to do this would result in too few chunks reserved for a large enough allocation in certain conditions. Bug 1805067 Change-Id: I9d14864724d228b42c47eb4669fbe0f789334397 Signed-off-by: Konsta Holtta <kholtta@nvidia.com> Reviewed-on: http://git-master/r/1214914 (cherry picked from commit 9bece931b13e4dad808622462d4d98d421cfb383) Reviewed-on: http://git-master/r/1220546 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com> Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: fix memory leak in case of failureDeepak Nibade2016-09-01
| | | | | | | | | | | | | | | | | | | | In __gk20a_alloc_pages(), if we fail to allocate a chunk we free previously allocated chunks in error path But we do not free up the memory reserved in those chunks which could lead to OOM situations Fix this by calling gk20a_free() for each chunk in error path Jira DNVGPU-96 Change-Id: I68aa18d68a5282405016e688c790ccbc0c2a0d69 Signed-off-by: Deepak Nibade <dnibade@nvidia.com> Reviewed-on: http://git-master/r/1203098 (cherry picked from commit f096bd1675600f4e2fc2d686f2911bb945fbbf0b) Reviewed-on: http://git-master/r/1210952 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
* gpu: nvgpu: Implement a vidmem allocatorAlex Waterman2016-08-30
Implement an allocator suitable for managing the video memory on dGPUs. It works by allocating chunks from an underlying buddy allocator and collating the chunks together (similar to what an sgt does in the wider Linux kernel). This handles the ability to get large buffers in potentially fragmented memory. The GMMU can then obviously map the physical vidmem into contiguous GVA spaces. Jira DNVGPU-96 Change-Id: Ic1d7800b033a170b77790aa23fad6858443d0e89 Signed-off-by: Alex Waterman <alexw@nvidia.com> Reviewed-on: http://git-master/r/1197203 (cherry picked from commit fa44684a843956ae384fef6d7a79b9cbbd04f73e) Reviewed-on: http://git-master/r/1185231 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
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