From: Sebastian Ott Date: Tue, 29 Sep 2015 16:23:50 +0000 (+0200) Subject: misc/genwqe: get rid of atomic allocations X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=19f7767e297f81726e0bd7bf3729178c41b94079;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git misc/genwqe: get rid of atomic allocations we received reports of failed allocations in genwqe code: [ 733.550955] genwqe_gzip: page allocation failure: order:1, mode:0x20 [ 733.550964] CPU: 2 PID: 1846 Comm: genwqe_gzip Not tainted 4.3.0-rc3-00042-g3225031 #78 [ 733.550968] 000000002782b830 000000002782b8c0 0000000000000002 0000000000000000 000000002782b960 000000002782b8d8 000000002782b8d8 00000000001134a0 0000000000000000 0000000000892b2a 0000000000871d0a 000000000000000b 000000002782b920 000000002782b8c0 0000000000000000 0000000000000000 0000000000000000 00000000001134a0 000000002782b8c0 000000002782b920 [ 733.551003] Call Trace: [ 733.551013] ([<0000000000113388>] show_trace+0xf8/0x158) [ 733.551018] [<0000000000113452>] show_stack+0x6a/0xe8 [ 733.551024] [<00000000004611d4>] dump_stack+0x7c/0xd8 [ 733.551031] [<000000000024dc22>] warn_alloc_failed+0xda/0x150 [ 733.551036] [<000000000025268e>] __alloc_pages_nodemask+0x94e/0xbc0 [ 733.551041] [<000000000012bcd8>] s390_dma_alloc+0x70/0x1a0 [ 733.551054] [<000003ff804d8e8c>] __genwqe_alloc_consistent+0x84/0xd0 [genwqe_card] [ 733.551063] [<000003ff804d90c2>] genwqe_alloc_sync_sgl+0x13a/0x328 [genwqe_card] [ 733.551066] [<000003ff804d41a0>] do_execute_ddcb+0x1f8/0x388 [genwqe_card] [ 733.551069] [<000003ff804d48c8>] genwqe_ioctl+0x598/0xd50 [genwqe_card] [ 733.551072] [<00000000002cc90c>] do_vfs_ioctl+0x3f4/0x590 [ 733.551074] [<00000000002ccb46>] SyS_ioctl+0x9e/0xb0 [ 733.551078] [<00000000006c8166>] system_call+0xd6/0x258 [ 733.551080] [<000003fffd25819a>] 0x3fffd25819a [ 733.551082] no locks held by genwqe_gzip/1846. This specific allocation and some others in genwqe are unnecessary flagged as atomic. All of genwqe's atomic allocations happen in a context where it's allowed to sleep. Change these to use GFP_KERNEL. Signed-off-by: Sebastian Ott Acked-by: Frank Haverkamp Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/misc/genwqe/card_ddcb.c b/drivers/misc/genwqe/card_ddcb.c index 6d51e5f08664..353ee0cc733d 100644 --- a/drivers/misc/genwqe/card_ddcb.c +++ b/drivers/misc/genwqe/card_ddcb.c @@ -203,7 +203,7 @@ struct genwqe_ddcb_cmd *ddcb_requ_alloc(void) { struct ddcb_requ *req; - req = kzalloc(sizeof(*req), GFP_ATOMIC); + req = kzalloc(sizeof(*req), GFP_KERNEL); if (!req) return NULL; diff --git a/drivers/misc/genwqe/card_dev.c b/drivers/misc/genwqe/card_dev.c index 70e62d6a3231..7f1b282d7d96 100644 --- a/drivers/misc/genwqe/card_dev.c +++ b/drivers/misc/genwqe/card_dev.c @@ -449,7 +449,7 @@ static int genwqe_mmap(struct file *filp, struct vm_area_struct *vma) if (get_order(vsize) > MAX_ORDER) return -ENOMEM; - dma_map = kzalloc(sizeof(struct dma_mapping), GFP_ATOMIC); + dma_map = kzalloc(sizeof(struct dma_mapping), GFP_KERNEL); if (dma_map == NULL) return -ENOMEM; @@ -785,7 +785,7 @@ static int genwqe_pin_mem(struct genwqe_file *cfile, struct genwqe_mem *m) map_addr = (m->addr & PAGE_MASK); map_size = round_up(m->size + (m->addr & ~PAGE_MASK), PAGE_SIZE); - dma_map = kzalloc(sizeof(struct dma_mapping), GFP_ATOMIC); + dma_map = kzalloc(sizeof(struct dma_mapping), GFP_KERNEL); if (dma_map == NULL) return -ENOMEM; diff --git a/drivers/misc/genwqe/card_utils.c b/drivers/misc/genwqe/card_utils.c index 1ca94e6fa8fb..222367cc8c81 100644 --- a/drivers/misc/genwqe/card_utils.c +++ b/drivers/misc/genwqe/card_utils.c @@ -220,7 +220,8 @@ void *__genwqe_alloc_consistent(struct genwqe_dev *cd, size_t size, if (get_order(size) > MAX_ORDER) return NULL; - return pci_alloc_consistent(cd->pci_dev, size, dma_handle); + return dma_alloc_coherent(&cd->pci_dev->dev, size, dma_handle, + GFP_KERNEL); } void __genwqe_free_consistent(struct genwqe_dev *cd, size_t size, @@ -229,7 +230,7 @@ void __genwqe_free_consistent(struct genwqe_dev *cd, size_t size, if (vaddr == NULL) return; - pci_free_consistent(cd->pci_dev, size, vaddr, dma_handle); + dma_free_coherent(&cd->pci_dev->dev, size, vaddr, dma_handle); } static void genwqe_unmap_pages(struct genwqe_dev *cd, dma_addr_t *dma_list,