Re: [PATCH] drm/amd/display: Fix mutex lock in dcn10
Applied. Thanks!
On 2022-09-25 17:53, Daniel Gomez wrote:
Removal of DC_FP_* wrappers from dml (9696679bf7ac) provokes a mutex
lock [2] on the amdgpu driver. Re-arrange the dcn10 code to avoid
locking the mutex by placing the DC_FP_* wrappers around the proper
functions.
This fixes the following WARN/stacktrace:
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:283
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 227, name: systemd-udevd
preempt_count: 1, expected: 0
CPU: 4 PID: 227 Comm: systemd-udevd Not tainted 6.0.0-rc6-qtec-standard #2
Hardware name: Qtechnology A/S QT5222/QT5221, BIOS v1.0.1 06/07/2021
Call Trace:
dump_stack_lvl+0x33/0x42
__might_resched.cold.172+0xa5/0xb3
mutex_lock+0x1a/0x40
amdgpu_dpm_get_clock_by_type_with_voltage+0x38/0x70 [amdgpu]
dm_pp_get_clock_levels_by_type_with_voltage+0x64/0xa0 [amdgpu]
dcn_bw_update_from_pplib+0x70/0x340 [amdgpu]
dcn10_create_resource_pool+0x8c8/0xd20 [amdgpu]
? __kmalloc+0x1c7/0x4a0
dc_create_resource_pool+0xe7/0x190 [amdgpu]
dc_create+0x212/0x5d0 [amdgpu]
amdgpu_dm_init+0x246/0x370 [amdgpu]
? schedule_hrtimeout_range_clock+0x93/0x120
? phm_wait_for_register_unequal.part.1+0x4a/0x80 [amdgpu]
dm_hw_init+0xe/0x20 [amdgpu]
amdgpu_device_init.cold.56+0x1324/0x1653 [amdgpu]
? pci_bus_read_config_word+0x43/0x80
amdgpu_driver_load_kms+0x15/0x120 [amdgpu]
amdgpu_pci_probe+0x116/0x320 [amdgpu]
pci_device_probe+0x97/0x110
really_probe+0xdd/0x340
__driver_probe_device+0x80/0x170
driver_probe_device+0x1f/0x90
__driver_attach+0xdc/0x180
? __device_attach_driver+0x100/0x100
? __device_attach_driver+0x100/0x100
bus_for_each_dev+0x74/0xc0
bus_add_driver+0x19e/0x210
? kset_find_obj+0x30/0xa0
? 0xa0a5b000
driver_register+0x6b/0xc0
? 0xa0a5b000
do_one_initcall+0x4a/0x1f0
? __vunmap+0x28e/0x2f0
? __cond_resched+0x15/0x30
? kmem_cache_alloc_trace+0x3d/0x440
do_init_module+0x4a/0x1e0
load_module+0x1cba/0x1e10
? __do_sys_finit_module+0xb7/0x120
__do_sys_finit_module+0xb7/0x120
do_syscall_64+0x3c/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff2b5f5422d
Code: 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48
89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48>
3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 ab 0e 00 f7 d8 64 89 01 48
RSP: 002b:7ffc44ab28e8 EFLAGS: 0246 ORIG_RAX: 0139
RAX: ffda RBX: 555c566a9240 RCX: 7ff2b5f5422d
RDX: RSI: 7ff2b60bb353 RDI: 0019
RBP: 7ff2b60bb353 R08: R09: 555c566a9240
R10: 0019 R11: 0246 R12:
R13: 0002 R14: R15:
Fixes: 9696679bf7ac ("drm/amd/display: remove DC_FP_* wrapper from
dml folder")
Signed-off-by: Daniel Gomez
---
.../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 12 +-
.../drm/amd/display/dc/dcn10/dcn10_resource.c | 66 +-
.../drm/amd/display/dc/dml/calcs/dcn_calcs.c | 118 --
.../gpu/drm/amd/display/dc/inc/dcn_calcs.h| 19 ++-
4 files changed, 138 insertions(+), 77 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 5b5d952b2b8c..cb1e06d62841 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -2994,6 +2994,7 @@ void dcn10_prepare_bandwidth(
{
struct dce_hwseq *hws = dc->hwseq;
struct hubbub *hubbub = dc->res_pool->hubbub;
+ int min_fclk_khz, min_dcfclk_khz, socclk_khz;
if (dc->debug.sanity_checks)
hws->funcs.verify_allow_pstate_change_high(dc);
@@ -3016,8 +3017,11 @@ void dcn10_prepare_bandwidth(
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) {
DC_FP_START();
- dcn_bw_notify_pplib_of_wm_ranges(dc);
+ dcn_get_soc_clks(
+ dc, _fclk_khz, _dcfclk_khz, _khz);
DC_FP_END();
+ dcn_bw_notify_pplib_of_wm_ranges(
+ dc, min_fclk_khz, min_dcfclk_khz, socclk_khz);
}
if (dc->debug.sanity_checks)
@@ -3030,6 +3034,7 @@ void dcn10_optimize_bandwidth(
{
struct dce_hwseq *hws = dc->hwseq;
struct hubbub *hubbub = dc->res_pool->hubbub;
+ int min_fclk_khz, min_dcfclk_khz, socclk_khz;
if (dc->debug.sanity_checks)
hws->funcs.verify_allow_pstate_change_high(dc);
@@ -3053,8 +3058,11 @@ void dcn10_optimize_bandwidth(
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) {
DC_FP_START();
- dcn_bw_notify_pplib_of_wm_ranges(dc);
+ dcn_get_soc_clks(
+ dc, _fclk_khz, _dcfclk_khz, _khz);
DC_FP_END();
+ dcn_bw_notify_pplib_of_wm_ranges(
+
Re: [PATCH] drm/amd/display: Fix mutex lock in dcn10
Am 25.09.22 um 23:53 schrieb Daniel Gomez:
Removal of DC_FP_* wrappers from dml (9696679bf7ac) provokes a mutex
lock [2] on the amdgpu driver. Re-arrange the dcn10 code to avoid
locking the mutex by placing the DC_FP_* wrappers around the proper
functions.
Of hand that looks correct to me now, but our DC team needs to take a
closer look.
Regards,
Christian.
This fixes the following WARN/stacktrace:
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:283
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 227, name: systemd-udevd
preempt_count: 1, expected: 0
CPU: 4 PID: 227 Comm: systemd-udevd Not tainted 6.0.0-rc6-qtec-standard #2
Hardware name: Qtechnology A/S QT5222/QT5221, BIOS v1.0.1 06/07/2021
Call Trace:
dump_stack_lvl+0x33/0x42
__might_resched.cold.172+0xa5/0xb3
mutex_lock+0x1a/0x40
amdgpu_dpm_get_clock_by_type_with_voltage+0x38/0x70 [amdgpu]
dm_pp_get_clock_levels_by_type_with_voltage+0x64/0xa0 [amdgpu]
dcn_bw_update_from_pplib+0x70/0x340 [amdgpu]
dcn10_create_resource_pool+0x8c8/0xd20 [amdgpu]
? __kmalloc+0x1c7/0x4a0
dc_create_resource_pool+0xe7/0x190 [amdgpu]
dc_create+0x212/0x5d0 [amdgpu]
amdgpu_dm_init+0x246/0x370 [amdgpu]
? schedule_hrtimeout_range_clock+0x93/0x120
? phm_wait_for_register_unequal.part.1+0x4a/0x80 [amdgpu]
dm_hw_init+0xe/0x20 [amdgpu]
amdgpu_device_init.cold.56+0x1324/0x1653 [amdgpu]
? pci_bus_read_config_word+0x43/0x80
amdgpu_driver_load_kms+0x15/0x120 [amdgpu]
amdgpu_pci_probe+0x116/0x320 [amdgpu]
pci_device_probe+0x97/0x110
really_probe+0xdd/0x340
__driver_probe_device+0x80/0x170
driver_probe_device+0x1f/0x90
__driver_attach+0xdc/0x180
? __device_attach_driver+0x100/0x100
? __device_attach_driver+0x100/0x100
bus_for_each_dev+0x74/0xc0
bus_add_driver+0x19e/0x210
? kset_find_obj+0x30/0xa0
? 0xa0a5b000
driver_register+0x6b/0xc0
? 0xa0a5b000
do_one_initcall+0x4a/0x1f0
? __vunmap+0x28e/0x2f0
? __cond_resched+0x15/0x30
? kmem_cache_alloc_trace+0x3d/0x440
do_init_module+0x4a/0x1e0
load_module+0x1cba/0x1e10
? __do_sys_finit_module+0xb7/0x120
__do_sys_finit_module+0xb7/0x120
do_syscall_64+0x3c/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff2b5f5422d
Code: 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48
89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48>
3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 ab 0e 00 f7 d8 64 89 01 48
RSP: 002b:7ffc44ab28e8 EFLAGS: 0246 ORIG_RAX: 0139
RAX: ffda RBX: 555c566a9240 RCX: 7ff2b5f5422d
RDX: RSI: 7ff2b60bb353 RDI: 0019
RBP: 7ff2b60bb353 R08: R09: 555c566a9240
R10: 0019 R11: 0246 R12:
R13: 0002 R14: R15:
Fixes: 9696679bf7ac ("drm/amd/display: remove DC_FP_* wrapper from
dml folder")
Signed-off-by: Daniel Gomez
---
.../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 12 +-
.../drm/amd/display/dc/dcn10/dcn10_resource.c | 66 +-
.../drm/amd/display/dc/dml/calcs/dcn_calcs.c | 118 --
.../gpu/drm/amd/display/dc/inc/dcn_calcs.h| 19 ++-
4 files changed, 138 insertions(+), 77 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 5b5d952b2b8c..cb1e06d62841 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -2994,6 +2994,7 @@ void dcn10_prepare_bandwidth(
{
struct dce_hwseq *hws = dc->hwseq;
struct hubbub *hubbub = dc->res_pool->hubbub;
+ int min_fclk_khz, min_dcfclk_khz, socclk_khz;
if (dc->debug.sanity_checks)
hws->funcs.verify_allow_pstate_change_high(dc);
@@ -3016,8 +3017,11 @@ void dcn10_prepare_bandwidth(
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) {
DC_FP_START();
- dcn_bw_notify_pplib_of_wm_ranges(dc);
+ dcn_get_soc_clks(
+ dc, _fclk_khz, _dcfclk_khz, _khz);
DC_FP_END();
+ dcn_bw_notify_pplib_of_wm_ranges(
+ dc, min_fclk_khz, min_dcfclk_khz, socclk_khz);
}
if (dc->debug.sanity_checks)
@@ -3030,6 +3034,7 @@ void dcn10_optimize_bandwidth(
{
struct dce_hwseq *hws = dc->hwseq;
struct hubbub *hubbub = dc->res_pool->hubbub;
+ int min_fclk_khz, min_dcfclk_khz, socclk_khz;
if (dc->debug.sanity_checks)
hws->funcs.verify_allow_pstate_change_high(dc);
@@ -3053,8 +3058,11 @@ void dcn10_optimize_bandwidth(
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) {
DC_FP_START();
- dcn_bw_notify_pplib_of_wm_ranges(dc);
+ dcn_get_soc_clks(
+ dc, _fclk_khz, _dcfclk_khz, _khz);
[PATCH] drm/amd/display: Fix mutex lock in dcn10
Removal of DC_FP_* wrappers from dml (9696679bf7ac) provokes a mutex
lock [2] on the amdgpu driver. Re-arrange the dcn10 code to avoid
locking the mutex by placing the DC_FP_* wrappers around the proper
functions.
This fixes the following WARN/stacktrace:
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:283
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 227, name: systemd-udevd
preempt_count: 1, expected: 0
CPU: 4 PID: 227 Comm: systemd-udevd Not tainted 6.0.0-rc6-qtec-standard #2
Hardware name: Qtechnology A/S QT5222/QT5221, BIOS v1.0.1 06/07/2021
Call Trace:
dump_stack_lvl+0x33/0x42
__might_resched.cold.172+0xa5/0xb3
mutex_lock+0x1a/0x40
amdgpu_dpm_get_clock_by_type_with_voltage+0x38/0x70 [amdgpu]
dm_pp_get_clock_levels_by_type_with_voltage+0x64/0xa0 [amdgpu]
dcn_bw_update_from_pplib+0x70/0x340 [amdgpu]
dcn10_create_resource_pool+0x8c8/0xd20 [amdgpu]
? __kmalloc+0x1c7/0x4a0
dc_create_resource_pool+0xe7/0x190 [amdgpu]
dc_create+0x212/0x5d0 [amdgpu]
amdgpu_dm_init+0x246/0x370 [amdgpu]
? schedule_hrtimeout_range_clock+0x93/0x120
? phm_wait_for_register_unequal.part.1+0x4a/0x80 [amdgpu]
dm_hw_init+0xe/0x20 [amdgpu]
amdgpu_device_init.cold.56+0x1324/0x1653 [amdgpu]
? pci_bus_read_config_word+0x43/0x80
amdgpu_driver_load_kms+0x15/0x120 [amdgpu]
amdgpu_pci_probe+0x116/0x320 [amdgpu]
pci_device_probe+0x97/0x110
really_probe+0xdd/0x340
__driver_probe_device+0x80/0x170
driver_probe_device+0x1f/0x90
__driver_attach+0xdc/0x180
? __device_attach_driver+0x100/0x100
? __device_attach_driver+0x100/0x100
bus_for_each_dev+0x74/0xc0
bus_add_driver+0x19e/0x210
? kset_find_obj+0x30/0xa0
? 0xa0a5b000
driver_register+0x6b/0xc0
? 0xa0a5b000
do_one_initcall+0x4a/0x1f0
? __vunmap+0x28e/0x2f0
? __cond_resched+0x15/0x30
? kmem_cache_alloc_trace+0x3d/0x440
do_init_module+0x4a/0x1e0
load_module+0x1cba/0x1e10
? __do_sys_finit_module+0xb7/0x120
__do_sys_finit_module+0xb7/0x120
do_syscall_64+0x3c/0x80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7ff2b5f5422d
Code: 5d c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 f8 48
89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48>
3d 01 f0 ff ff 73 01 c3 48 8b 0d c3 ab 0e 00 f7 d8 64 89 01 48
RSP: 002b:7ffc44ab28e8 EFLAGS: 0246 ORIG_RAX: 0139
RAX: ffda RBX: 555c566a9240 RCX: 7ff2b5f5422d
RDX: RSI: 7ff2b60bb353 RDI: 0019
RBP: 7ff2b60bb353 R08: R09: 555c566a9240
R10: 0019 R11: 0246 R12:
R13: 0002 R14: R15:
Fixes: 9696679bf7ac ("drm/amd/display: remove DC_FP_* wrapper from
dml folder")
Signed-off-by: Daniel Gomez
---
.../amd/display/dc/dcn10/dcn10_hw_sequencer.c | 12 +-
.../drm/amd/display/dc/dcn10/dcn10_resource.c | 66 +-
.../drm/amd/display/dc/dml/calcs/dcn_calcs.c | 118 --
.../gpu/drm/amd/display/dc/inc/dcn_calcs.h| 19 ++-
4 files changed, 138 insertions(+), 77 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 5b5d952b2b8c..cb1e06d62841 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -2994,6 +2994,7 @@ void dcn10_prepare_bandwidth(
{
struct dce_hwseq *hws = dc->hwseq;
struct hubbub *hubbub = dc->res_pool->hubbub;
+ int min_fclk_khz, min_dcfclk_khz, socclk_khz;
if (dc->debug.sanity_checks)
hws->funcs.verify_allow_pstate_change_high(dc);
@@ -3016,8 +3017,11 @@ void dcn10_prepare_bandwidth(
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) {
DC_FP_START();
- dcn_bw_notify_pplib_of_wm_ranges(dc);
+ dcn_get_soc_clks(
+ dc, _fclk_khz, _dcfclk_khz, _khz);
DC_FP_END();
+ dcn_bw_notify_pplib_of_wm_ranges(
+ dc, min_fclk_khz, min_dcfclk_khz, socclk_khz);
}
if (dc->debug.sanity_checks)
@@ -3030,6 +3034,7 @@ void dcn10_optimize_bandwidth(
{
struct dce_hwseq *hws = dc->hwseq;
struct hubbub *hubbub = dc->res_pool->hubbub;
+ int min_fclk_khz, min_dcfclk_khz, socclk_khz;
if (dc->debug.sanity_checks)
hws->funcs.verify_allow_pstate_change_high(dc);
@@ -3053,8 +3058,11 @@ void dcn10_optimize_bandwidth(
if (dc->debug.pplib_wm_report_mode == WM_REPORT_OVERRIDE) {
DC_FP_START();
- dcn_bw_notify_pplib_of_wm_ranges(dc);
+ dcn_get_soc_clks(
+ dc, _fclk_khz, _dcfclk_khz, _khz);
DC_FP_END();
+ dcn_bw_notify_pplib_of_wm_ranges(
+ dc, min_fclk_khz, min_dcfclk_khz, socclk_khz);
}
if
