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Message-ID: <202501311245.Y5DLruKs-lkp@intel.com>
Date: Fri, 31 Jan 2025 12:16:07 +0800
From: kernel test robot <lkp@...el.com>
To: Christian König <christian.koenig@....com>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: drivers/gpu/drm/radeon/radeon_cs.c:418: warning: Excess function
parameter 'backoff' description in 'radeon_cs_parser_fini'
Hi Christian,
FYI, the error/warning still remains.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 69e858e0b8b2ea07759e995aa383e8780d9d140c
commit: e2b3f7c88cc153a0edc155b976fd825440015632 drm/radeon: switch over to drm_exec v2
date: 2 months ago
config: alpha-randconfig-r026-20211101 (https://download.01.org/0day-ci/archive/20250131/202501311245.Y5DLruKs-lkp@intel.com/config)
compiler: alpha-linux-gcc (GCC) 12.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250131/202501311245.Y5DLruKs-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501311245.Y5DLruKs-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/radeon/radeon_cs.c:418: warning: Excess function parameter 'backoff' description in 'radeon_cs_parser_fini'
vim +418 drivers/gpu/drm/radeon/radeon_cs.c
4330441a745ea0 Marek Olšák 2014-03-02 407
771fe6b912fca5 Jerome Glisse 2009-06-05 408 /**
3ffa59a01c2676 Lee Jones 2021-05-20 409 * radeon_cs_parser_fini() - clean parser states
771fe6b912fca5 Jerome Glisse 2009-06-05 410 * @parser: parser structure holding parsing context.
771fe6b912fca5 Jerome Glisse 2009-06-05 411 * @error: error number
f5ef92b5af0f60 Lee Jones 2020-11-09 412 * @backoff: indicator to backoff the reservation
771fe6b912fca5 Jerome Glisse 2009-06-05 413 *
771fe6b912fca5 Jerome Glisse 2009-06-05 414 * If error is set than unvalidate buffer, otherwise just free memory
771fe6b912fca5 Jerome Glisse 2009-06-05 415 * used by parsing context.
771fe6b912fca5 Jerome Glisse 2009-06-05 416 **/
e2b3f7c88cc153 Christian König 2022-05-04 417 static void radeon_cs_parser_fini(struct radeon_cs_parser *parser, int error)
771fe6b912fca5 Jerome Glisse 2009-06-05 @418 {
771fe6b912fca5 Jerome Glisse 2009-06-05 419 unsigned i;
771fe6b912fca5 Jerome Glisse 2009-06-05 420
e43b5ec05afdc2 Jerome Glisse 2012-08-06 421 if (!error) {
e2b3f7c88cc153 Christian König 2022-05-04 422 struct radeon_bo_list *reloc;
e2b3f7c88cc153 Christian König 2022-05-04 423
4330441a745ea0 Marek Olšák 2014-03-02 424 /* Sort the buffer list from the smallest to largest buffer,
4330441a745ea0 Marek Olšák 2014-03-02 425 * which affects the order of buffers in the LRU list.
4330441a745ea0 Marek Olšák 2014-03-02 426 * This assures that the smallest buffers are added first
4330441a745ea0 Marek Olšák 2014-03-02 427 * to the LRU list, so they are likely to be later evicted
4330441a745ea0 Marek Olšák 2014-03-02 428 * first, instead of large buffers whose eviction is more
4330441a745ea0 Marek Olšák 2014-03-02 429 * expensive.
4330441a745ea0 Marek Olšák 2014-03-02 430 *
4330441a745ea0 Marek Olšák 2014-03-02 431 * This slightly lowers the number of bytes moved by TTM
4330441a745ea0 Marek Olšák 2014-03-02 432 * per frame under memory pressure.
4330441a745ea0 Marek Olšák 2014-03-02 433 */
4330441a745ea0 Marek Olšák 2014-03-02 434 list_sort(NULL, &parser->validated, cmp_size_smaller_first);
e2b3f7c88cc153 Christian König 2022-05-04 435 list_for_each_entry(reloc, &parser->validated, list) {
e2b3f7c88cc153 Christian König 2022-05-04 436 dma_resv_add_fence(reloc->robj->tbo.base.resv,
e2b3f7c88cc153 Christian König 2022-05-04 437 &parser->ib.fence->base,
e2b3f7c88cc153 Christian König 2022-05-04 438 reloc->shared ?
e2b3f7c88cc153 Christian König 2022-05-04 439 DMA_RESV_USAGE_READ :
e2b3f7c88cc153 Christian König 2022-05-04 440 DMA_RESV_USAGE_WRITE);
e2b3f7c88cc153 Christian König 2022-05-04 441 }
e43b5ec05afdc2 Jerome Glisse 2012-08-06 442 }
147666fb3b93b8 Thomas Hellstrom 2010-11-17 443
e2b3f7c88cc153 Christian König 2022-05-04 444 drm_exec_fini(&parser->exec);
e2b3f7c88cc153 Christian König 2022-05-04 445
fcbc451ba1948f Pauli Nieminen 2010-03-19 446 if (parser->relocs != NULL) {
771fe6b912fca5 Jerome Glisse 2009-06-05 447 for (i = 0; i < parser->nrelocs; i++) {
d33a8fc719e8d3 Christian König 2014-11-27 448 struct radeon_bo *bo = parser->relocs[i].robj;
d33a8fc719e8d3 Christian König 2014-11-27 449 if (bo == NULL)
d33a8fc719e8d3 Christian König 2014-11-27 450 continue;
d33a8fc719e8d3 Christian König 2014-11-27 451
f11fb66ae92193 Emil Velikov 2020-05-15 452 drm_gem_object_put(&bo->tbo.base);
771fe6b912fca5 Jerome Glisse 2009-06-05 453 }
fcbc451ba1948f Pauli Nieminen 2010-03-19 454 }
48e113e516a94a Michel Dänzer 2009-09-15 455 kfree(parser->track);
2098105ec65cb3 Michal Hocko 2017-05-17 456 kvfree(parser->relocs);
2098105ec65cb3 Michal Hocko 2017-05-17 457 kvfree(parser->vm_bos);
28a326c592e3e4 Maarten Lankhorst 2013-10-09 458 for (i = 0; i < parser->nchunks; i++)
2098105ec65cb3 Michal Hocko 2017-05-17 459 kvfree(parser->chunks[i].kdata);
3fcb4f01deedfa Chen Li 2021-03-02 460 kvfree(parser->chunks);
3fcb4f01deedfa Chen Li 2021-03-02 461 kvfree(parser->chunks_array);
771fe6b912fca5 Jerome Glisse 2009-06-05 462 radeon_ib_free(parser->rdev, &parser->ib);
b7f6413a731f21 Jerome Glisse 2012-05-02 463 radeon_ib_free(parser->rdev, &parser->const_ib);
b7f6413a731f21 Jerome Glisse 2012-05-02 464 }
771fe6b912fca5 Jerome Glisse 2009-06-05 465
:::::: The code at line 418 was first introduced by commit
:::::: 771fe6b912fca54f03e8a72eb63058b582775362 drm/radeon: introduce kernel modesetting for radeon hardware
:::::: TO: Jerome Glisse <jglisse@...hat.com>
:::::: CC: Dave Airlie <airlied@...hat.com>
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