Thanks. I went through that bug report. And it seems weird the table lock works but msg lock does not considering if it was really caused by some race conditions. Considering the issue was found on multi monitors setup. Maybe mclk dpm is related. Is it possible to try with single monitor only? Or trying disabling mclk dpm? -----Original Message----- From: Alex Deucher <alexdeucher@xxxxxxxxx> Sent: Tuesday, February 18, 2020 10:35 PM To: Quan, Evan <Evan.Quan@xxxxxxx> Cc: amd-gfx@xxxxxxxxxxxxxxxxxxxxx; Deucher, Alexander <Alexander.Deucher@xxxxxxx> Subject: Re: [PATCH] drm/amdgpu/smu: add an update table lock On Mon, Feb 17, 2020 at 10:01 PM Quan, Evan <Evan.Quan@xxxxxxx> wrote: > > Hi Alex, > > Did you seen any issue caused by this? Seems to help on: https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgitlab.freedesktop.org%2Fdrm%2Famd%2Fissues%2F1047&data=02%7C01%7CEvan.Quan%40amd.com%7C1266ea24bc2f4fff2cfb08d7b47fc095%7C3dd8961fe4884e608e11a82d994e183d%7C0%7C0%7C637176333114972316&sdata=Lpts%2FYe%2Bq64ppyuzNIGWFYiGEXqzQVdAO2CiP6mSfFc%3D&reserved=0 I haven't been able to prove to myself that the existing high level locking covers every case. Alex > > Regards, > Evan > -----Original Message----- > From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of > Alex Deucher > Sent: Tuesday, February 18, 2020 5:38 AM > To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx > Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx> > Subject: [PATCH] drm/amdgpu/smu: add an update table lock > > The driver uses a staging buffer to update tables in the SMU. > Add a lock to make sure we don't try and do this concurrently by > accident. > > Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> > --- > drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 7 ++++++- > drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 1 + > 2 files changed, 7 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > index 9f2428fd98f6..437a3e7b36b4 100644 > --- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > +++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c > @@ -530,6 +530,7 @@ int smu_update_table(struct smu_context *smu, enum > smu_table_id table_index, int > > table_size = smu_table->tables[table_index].size; > > + mutex_lock(&smu->update_table_lock); > if (drv2smu) { > memcpy(table->cpu_addr, table_data, table_size); > /* > @@ -544,13 +545,16 @@ int smu_update_table(struct smu_context *smu, enum smu_table_id table_index, int > SMU_MSG_TransferTableSmu2Dram, > table_id | ((argument & 0xFFFF) << 16)); > if (ret) > - return ret; > + goto unlock; > > if (!drv2smu) { > amdgpu_asic_flush_hdp(adev, NULL); > memcpy(table_data, table->cpu_addr, table_size); > } > > +unlock: > + mutex_unlock(&smu->update_table_lock); > + > return ret; > } > > @@ -900,6 +904,7 @@ static int smu_sw_init(void *handle) > > mutex_init(&smu->sensor_lock); > mutex_init(&smu->metrics_lock); > + mutex_init(&smu->update_table_lock); > > smu->watermarks_bitmap = 0; > smu->power_profile_mode = PP_SMC_POWER_PROFILE_BOOTUP_DEFAULT; > diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > index 97b6714e83e6..506288072e8e 100644 > --- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > +++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h > @@ -362,6 +362,7 @@ struct smu_context > struct mutex mutex; > struct mutex sensor_lock; > struct mutex metrics_lock; > + struct mutex update_table_lock; > uint64_t pool_size; > > struct smu_table_context smu_table; > -- > 2.24.1 > > _______________________________________________ > amd-gfx mailing list > amd-gfx@xxxxxxxxxxxxxxxxxxxxx > https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Flist > s.freedesktop.org%2Fmailman%2Flistinfo%2Famd-gfx&data=02%7C01%7CEv > an.Quan%40amd.com%7C1266ea24bc2f4fff2cfb08d7b47fc095%7C3dd8961fe4884e6 > 08e11a82d994e183d%7C0%7C0%7C637176333114972316&sdata=JiABwHLa0eLLp > yiwKXU4nSU28OXBuxTnRbisgoC4uK0%3D&reserved=0 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
