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| author | Shirish S <shirish.s@amd.com> | 2018-05-29 09:23:53 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-06-15 12:20:31 -0500 |
| commit | 8f4805a265fd710a2827b2c0e10c08ef2b526870 (patch) | |
| tree | 6a9907bf2ec1b189a74b5fa400d9118f4dfafc19 /drivers/gpu/drm/amd/amdgpu/atom.c | |
| parent | baca30fabdc9ba2712481e1b9e14ded1de6cfa3a (diff) | |
| download | op-kernel-dev-8f4805a265fd710a2827b2c0e10c08ef2b526870.zip op-kernel-dev-8f4805a265fd710a2827b2c0e10c08ef2b526870.tar.gz | |
drm/amdgpu: avoid sleep while executing atombios table (V2)
This patch replaces kzalloc's flag from GFP_KERNEL to
GFP_ATOMIC to avoid sleeping in atomic context.
Below is the stack trace:
BUG: sleeping function called from invalid context at mm/slab.h:***
in_atomic(): 1, irqs_disabled(): 0, pid: 1137, name: DrmThread
CPU: 1 PID: 1137 Comm: DrmThread Tainted: G W 4.14.43 #10
Call Trace:
dump_stack+0x4d/0x63
___might_sleep+0x11f/0x12e
__kmalloc+0x76/0x126
amdgpu_atom_execute_table_locked+0xfc/0x285
amdgpu_atom_execute_table+0x5d/0x72
transmitter_control_v1_5+0xef/0x11a
hwss_edp_backlight_control+0x132/0x151
dce110_disable_stream+0x133/0x16e
core_link_disable_stream+0x1c5/0x23b
dce110_reset_hw_ctx_wrap+0xb4/0x1aa
dce110_apply_ctx_to_hw+0x4e/0x6da
? generic_reg_get+0x1f/0x33
dc_commit_state+0x33f/0x3d2
amdgpu_dm_atomic_commit_tail+0x2cf/0x5d2
? wait_for_common+0x5b/0x69
commit_tail+0x42/0x64
drm_atomic_helper_commit+0xdc/0xf9
drm_atomic_helper_set_config+0x5c/0x76
__drm_mode_set_config_internal+0x64/0x105
drm_mode_setcrtc+0x474/0x56f
? drm_mode_getcrtc+0x155/0x155
drm_ioctl_kernel+0x6c/0xa8
drm_ioctl+0x267/0x353
? drm_mode_getcrtc+0x155/0x155
amdgpu_drm_ioctl+0x4f/0x7f
vfs_ioctl+0x21/0x2f
do_vfs_ioctl+0x4c4/0x4e7
? security_file_ioctl+0x3b/0x4f
SyS_ioctl+0x57/0x79
do_syscall_64+0x64/0x72
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
V2: Added stack trace in commit message.
Signed-off-by: Shirish S <shirish.s@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atom.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atom.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atom.c b/drivers/gpu/drm/amd/amdgpu/atom.c index 69500a8..6cd518f 100644 --- a/drivers/gpu/drm/amd/amdgpu/atom.c +++ b/drivers/gpu/drm/amd/amdgpu/atom.c @@ -1221,7 +1221,7 @@ static int amdgpu_atom_execute_table_locked(struct atom_context *ctx, int index, ectx.abort = false; ectx.last_jump = 0; if (ws) - ectx.ws = kzalloc(4 * ws, GFP_KERNEL); + ectx.ws = kzalloc(4 * ws, GFP_ATOMIC); else ectx.ws = NULL; |
