Messages in this thread | | | Subject | Re: [PATCH 2/2] drm/ttm: Use pr_debug for all output from ttm_bo_evict | From | "Zhang, Jerry(Junwei)" <> | Date | Thu, 6 Dec 2018 10:43:48 +0800 |
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On 12/6/18 12:56 AM, Michel Dänzer wrote: > From: Michel Dänzer <michel.daenzer@amd.com> > > All the output is related, so it should all be printed the same way. > Some of it was using pr_debug, but some of it appeared in dmesg by > default. The caller should handle failure, so there's no need to spam > dmesg with potentially quite a lot of output by default. > > Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> Sounds reasonable, but personally prefer to show error when some vital incident happens, e.g. no memory on eviction.
Regards, Jerry
> --- > drivers/gpu/drm/ttm/ttm_bo.c | 39 ++++++++++++++++++------------------ > 1 file changed, 20 insertions(+), 19 deletions(-) > > diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c > index d87935bf8e30..5e9b9dd91629 100644 > --- a/drivers/gpu/drm/ttm/ttm_bo.c > +++ b/drivers/gpu/drm/ttm/ttm_bo.c > @@ -77,38 +77,39 @@ static inline int ttm_mem_type_from_place(const struct ttm_place *place, > return 0; > } > > -static void ttm_mem_type_debug(struct ttm_bo_device *bdev, int mem_type) > +static void ttm_mem_type_debug(struct ttm_bo_device *bdev, struct drm_printer *p, > + int mem_type) > { > struct ttm_mem_type_manager *man = &bdev->man[mem_type]; > - struct drm_printer p = drm_debug_printer(TTM_PFX); > > - pr_err(" has_type: %d\n", man->has_type); > - pr_err(" use_type: %d\n", man->use_type); > - pr_err(" flags: 0x%08X\n", man->flags); > - pr_err(" gpu_offset: 0x%08llX\n", man->gpu_offset); > - pr_err(" size: %llu\n", man->size); > - pr_err(" available_caching: 0x%08X\n", man->available_caching); > - pr_err(" default_caching: 0x%08X\n", man->default_caching); > + drm_printf(p, " has_type: %d\n", man->has_type); > + drm_printf(p, " use_type: %d\n", man->use_type); > + drm_printf(p, " flags: 0x%08X\n", man->flags); > + drm_printf(p, " gpu_offset: 0x%08llX\n", man->gpu_offset); > + drm_printf(p, " size: %llu\n", man->size); > + drm_printf(p, " available_caching: 0x%08X\n", man->available_caching); > + drm_printf(p, " default_caching: 0x%08X\n", man->default_caching); > if (mem_type != TTM_PL_SYSTEM) > - (*man->func->debug)(man, &p); > + (*man->func->debug)(man, p); > } > > static void ttm_bo_mem_space_debug(struct ttm_buffer_object *bo, > struct ttm_placement *placement) > { > + struct drm_printer p = drm_debug_printer(TTM_PFX); > int i, ret, mem_type; > > - pr_err("No space for %p (%lu pages, %luK, %luM)\n", > - bo, bo->mem.num_pages, bo->mem.size >> 10, > - bo->mem.size >> 20); > + drm_printf(&p, "No space for %p (%lu pages, %luK, %luM)\n", > + bo, bo->mem.num_pages, bo->mem.size >> 10, > + bo->mem.size >> 20); > for (i = 0; i < placement->num_placement; i++) { > ret = ttm_mem_type_from_place(&placement->placement[i], > &mem_type); > if (ret) > return; > - pr_err(" placement[%d]=0x%08X (%d)\n", > - i, placement->placement[i].flags, mem_type); > - ttm_mem_type_debug(bo->bdev, mem_type); > + drm_printf(&p, " placement[%d]=0x%08X (%d)\n", > + i, placement->placement[i].flags, mem_type); > + ttm_mem_type_debug(bo->bdev, &p, mem_type); > } > } > > @@ -728,8 +729,8 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, > ret = ttm_bo_mem_space(bo, &placement, &evict_mem, ctx); > if (ret) { > if (ret != -ERESTARTSYS) { > - pr_err("Failed to find memory space for buffer 0x%p eviction\n", > - bo); > + pr_debug("Failed to find memory space for buffer 0x%p eviction\n", > + bo); > ttm_bo_mem_space_debug(bo, &placement); > } > goto out; > @@ -738,7 +739,7 @@ static int ttm_bo_evict(struct ttm_buffer_object *bo, > ret = ttm_bo_handle_move_mem(bo, &evict_mem, true, ctx); > if (unlikely(ret)) { > if (ret != -ERESTARTSYS) > - pr_err("Buffer eviction failed\n"); > + pr_debug("Buffer eviction failed\n"); > ttm_bo_mem_put(bo, &evict_mem); > goto out; > }
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