From 2310b3c952c5dc56c2e08f71b907b8e23ab3270d Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Wed, 19 Apr 2017 10:41:17 +0100 Subject: [PATCH] drm/i915/selftests: Allocate inode/file dynamically Avoid having too large a stack by creating the fake struct inode/file on the heap instead. drivers/gpu/drm/i915/selftests/mock_drm.c: In function 'mock_file': drivers/gpu/drm/i915/selftests/mock_drm.c:46:1: error: the frame size of 1328 bytes is larger than 1280 bytes [-Werror=frame-larger-than=] drivers/gpu/drm/i915/selftests/mock_drm.c: In function 'mock_file_free': drivers/gpu/drm/i915/selftests/mock_drm.c:54:1: error: the frame size of 1312 bytes is larger than 1280 bytes [-Werror=frame-larger-than=] Reported-by: Arnd Bergmann Fixes: 66d9cb5d805a ("drm/i915: Mock the GEM device for self-testing") Signed-off-by: Chris Wilson Cc: Joonas Lahtinen Cc: Tvrtko Ursulin Cc: Matthew Auld Cc: Arnd Bergmann Acked-by: Arnd Bergmann Link: http://patchwork.freedesktop.org/patch/msgid/20170419094143.16922-2-chris@chris-wilson.co.uk Reviewed-by: Joonas Lahtinen --- drivers/gpu/drm/i915/selftests/mock_drm.c | 45 ++++++++++++++++------- 1 file changed, 32 insertions(+), 13 deletions(-) diff --git a/drivers/gpu/drm/i915/selftests/mock_drm.c b/drivers/gpu/drm/i915/selftests/mock_drm.c index 113dec05c7dc..09c704153456 100644 --- a/drivers/gpu/drm/i915/selftests/mock_drm.c +++ b/drivers/gpu/drm/i915/selftests/mock_drm.c @@ -24,31 +24,50 @@ #include "mock_drm.h" -static inline struct inode fake_inode(struct drm_i915_private *i915) -{ - return (struct inode){ .i_rdev = i915->drm.primary->index }; -} - struct drm_file *mock_file(struct drm_i915_private *i915) { - struct inode inode = fake_inode(i915); - struct file filp = {}; + struct file *filp; + struct inode *inode; struct drm_file *file; int err; - err = drm_open(&inode, &filp); - if (unlikely(err)) - return ERR_PTR(err); + inode = kzalloc(sizeof(*inode), GFP_KERNEL); + if (!inode) { + err = -ENOMEM; + goto err; + } + + inode->i_rdev = i915->drm.primary->index; - file = filp.private_data; + filp = kzalloc(sizeof(*filp), GFP_KERNEL); + if (!filp) { + err = -ENOMEM; + goto err_inode; + } + + err = drm_open(inode, filp); + if (err) + goto err_filp; + + file = filp->private_data; + memset(&file->filp, POISON_INUSE, sizeof(file->filp)); file->authenticated = true; + + kfree(filp); + kfree(inode); return file; + +err_filp: + kfree(filp); +err_inode: + kfree(inode); +err: + return ERR_PTR(err); } void mock_file_free(struct drm_i915_private *i915, struct drm_file *file) { - struct inode inode = fake_inode(i915); struct file filp = { .private_data = file }; - drm_release(&inode, &filp); + drm_release(NULL, &filp); } -- 2.20.1