| Message ID | 20180807130713.1016-4-digetx@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | host1x_cdma_update_sync_queue() clean up | expand |
On 07.08.2018 16:07, Dmitry Osipenko wrote: > Currently gathers of a hung job are getting NOP'ed and a restarted CDMA > executes the NOP'ed gathers. There shouldn't be a reason to not restart > CDMA execution starting with a next job, avoiding the unnecessary churning > with gathers NOP'ing. > > Signed-off-by: Dmitry Osipenko <digetx@gmail.com> > --- > drivers/gpu/host1x/cdma.c | 23 +++++++++++------------ > drivers/gpu/host1x/hw/cdma_hw.c | 13 ------------- > 2 files changed, 11 insertions(+), 25 deletions(-) > > diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c > index 6aa6fa1498e8..9e4f01c7f663 100644 > --- a/drivers/gpu/host1x/cdma.c > +++ b/drivers/gpu/host1x/cdma.c > @@ -323,7 +323,7 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, > { > struct host1x *host1x = cdma_to_host1x(cdma); > u32 restart_addr, syncpt_incrs, syncpt_val; > - struct host1x_job *job; > + struct host1x_job *job, *next_job = NULL; > > syncpt_val = host1x_syncpt_load(cdma->timeout.syncpt); > > @@ -341,8 +341,13 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, > __func__); > > list_for_each_entry(job, &cdma->sync_queue, list) { > - if (syncpt_val < job->syncpt_end) > + if (syncpt_val < job->syncpt_end) { > + > + if (!list_is_last(&job->list, &cdma->sync_queue)) > + next_job = list_next_entry(job, list); > + > goto syncpt_incr; > + } > > host1x_job_dump(dev, job); > } > @@ -355,17 +360,11 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, > /* > * Increment with CPU the remaining syncpts of a partially executed job. > * > - * Syncpt increments must be done inline with the pushbuffer from a > - * GATHER buffer to maintain the order (slots are modified to be a > - * GATHER of syncpt incrs). > - * > - * Note: save in restart_addr the location where the timed out buffer > - * started in the PB, so we can start the refetch from there (with the > - * modified NOP-ed PB slots). This lets things appear to have completed > - * properly for this buffer and resources are freed. > + * CDMA will continue execution starting with the next job or will get > + * into idle state. > */ > - if (job) > - restart_addr = job->first_get; > + if (next_job) > + restart_addr = next_job->first_get; > else > restart_addr = cdma->last_pos; > > diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c > index ce320534cbed..bc203532ae6d 100644 > --- a/drivers/gpu/host1x/hw/cdma_hw.c > +++ b/drivers/gpu/host1x/hw/cdma_hw.c > @@ -40,7 +40,6 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr, > u32 syncpt_incrs, u32 syncval, u32 nr_slots) > { > struct host1x *host1x = cdma_to_host1x(cdma); The *host1x is now unused and should be removed as well, I'll fix it in v3. Mikko, could you take a look at the patches?
Reviewed-by: Mikko Perttnuen <mperttunen@nvidia.com> On 07/08/2018 22.07, Dmitry Osipenko wrote: > Currently gathers of a hung job are getting NOP'ed and a restarted CDMA > executes the NOP'ed gathers. There shouldn't be a reason to not restart > CDMA execution starting with a next job, avoiding the unnecessary churning > with gathers NOP'ing. > > Signed-off-by: Dmitry Osipenko <digetx@gmail.com> > --- > drivers/gpu/host1x/cdma.c | 23 +++++++++++------------ > drivers/gpu/host1x/hw/cdma_hw.c | 13 ------------- > 2 files changed, 11 insertions(+), 25 deletions(-) > > diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c > index 6aa6fa1498e8..9e4f01c7f663 100644 > --- a/drivers/gpu/host1x/cdma.c > +++ b/drivers/gpu/host1x/cdma.c > @@ -323,7 +323,7 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, > { > struct host1x *host1x = cdma_to_host1x(cdma); > u32 restart_addr, syncpt_incrs, syncpt_val; > - struct host1x_job *job; > + struct host1x_job *job, *next_job = NULL; > > syncpt_val = host1x_syncpt_load(cdma->timeout.syncpt); > > @@ -341,8 +341,13 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, > __func__); > > list_for_each_entry(job, &cdma->sync_queue, list) { > - if (syncpt_val < job->syncpt_end) > + if (syncpt_val < job->syncpt_end) { > + > + if (!list_is_last(&job->list, &cdma->sync_queue)) > + next_job = list_next_entry(job, list); > + > goto syncpt_incr; > + } > > host1x_job_dump(dev, job); > } > @@ -355,17 +360,11 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, > /* > * Increment with CPU the remaining syncpts of a partially executed job. > * > - * Syncpt increments must be done inline with the pushbuffer from a > - * GATHER buffer to maintain the order (slots are modified to be a > - * GATHER of syncpt incrs). > - * > - * Note: save in restart_addr the location where the timed out buffer > - * started in the PB, so we can start the refetch from there (with the > - * modified NOP-ed PB slots). This lets things appear to have completed > - * properly for this buffer and resources are freed. > + * CDMA will continue execution starting with the next job or will get > + * into idle state. > */ > - if (job) > - restart_addr = job->first_get; > + if (next_job) > + restart_addr = next_job->first_get; > else > restart_addr = cdma->last_pos; > > diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c > index ce320534cbed..bc203532ae6d 100644 > --- a/drivers/gpu/host1x/hw/cdma_hw.c > +++ b/drivers/gpu/host1x/hw/cdma_hw.c > @@ -40,7 +40,6 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr, > u32 syncpt_incrs, u32 syncval, u32 nr_slots) > { > struct host1x *host1x = cdma_to_host1x(cdma); > - struct push_buffer *pb = &cdma->push_buffer; > unsigned int i; > > for (i = 0; i < syncpt_incrs; i++) > @@ -48,18 +47,6 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr, > > /* after CPU incr, ensure shadow is up to date */ > host1x_syncpt_load(cdma->timeout.syncpt); > - > - /* NOP all the PB slots */ > - while (nr_slots--) { > - u32 *p = (u32 *)(pb->mapped + getptr); > - *(p++) = HOST1X_OPCODE_NOP; > - *(p++) = HOST1X_OPCODE_NOP; > - dev_dbg(host1x->dev, "%s: NOP at %pad+%#x\n", __func__, > - &pb->dma, getptr); > - getptr = (getptr + 8) & (pb->size - 1); > - } > - > - wmb(); > } > > /* >
On 10/9/18 8:10 AM, Mikko Perttunen wrote:
> Reviewed-by: Mikko Perttnuen <mperttunen@nvidia.com>
Thank you :)
diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c index 6aa6fa1498e8..9e4f01c7f663 100644 --- a/drivers/gpu/host1x/cdma.c +++ b/drivers/gpu/host1x/cdma.c @@ -323,7 +323,7 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, { struct host1x *host1x = cdma_to_host1x(cdma); u32 restart_addr, syncpt_incrs, syncpt_val; - struct host1x_job *job; + struct host1x_job *job, *next_job = NULL; syncpt_val = host1x_syncpt_load(cdma->timeout.syncpt); @@ -341,8 +341,13 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, __func__); list_for_each_entry(job, &cdma->sync_queue, list) { - if (syncpt_val < job->syncpt_end) + if (syncpt_val < job->syncpt_end) { + + if (!list_is_last(&job->list, &cdma->sync_queue)) + next_job = list_next_entry(job, list); + goto syncpt_incr; + } host1x_job_dump(dev, job); } @@ -355,17 +360,11 @@ void host1x_cdma_update_sync_queue(struct host1x_cdma *cdma, /* * Increment with CPU the remaining syncpts of a partially executed job. * - * Syncpt increments must be done inline with the pushbuffer from a - * GATHER buffer to maintain the order (slots are modified to be a - * GATHER of syncpt incrs). - * - * Note: save in restart_addr the location where the timed out buffer - * started in the PB, so we can start the refetch from there (with the - * modified NOP-ed PB slots). This lets things appear to have completed - * properly for this buffer and resources are freed. + * CDMA will continue execution starting with the next job or will get + * into idle state. */ - if (job) - restart_addr = job->first_get; + if (next_job) + restart_addr = next_job->first_get; else restart_addr = cdma->last_pos; diff --git a/drivers/gpu/host1x/hw/cdma_hw.c b/drivers/gpu/host1x/hw/cdma_hw.c index ce320534cbed..bc203532ae6d 100644 --- a/drivers/gpu/host1x/hw/cdma_hw.c +++ b/drivers/gpu/host1x/hw/cdma_hw.c @@ -40,7 +40,6 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr, u32 syncpt_incrs, u32 syncval, u32 nr_slots) { struct host1x *host1x = cdma_to_host1x(cdma); - struct push_buffer *pb = &cdma->push_buffer; unsigned int i; for (i = 0; i < syncpt_incrs; i++) @@ -48,18 +47,6 @@ static void cdma_timeout_cpu_incr(struct host1x_cdma *cdma, u32 getptr, /* after CPU incr, ensure shadow is up to date */ host1x_syncpt_load(cdma->timeout.syncpt); - - /* NOP all the PB slots */ - while (nr_slots--) { - u32 *p = (u32 *)(pb->mapped + getptr); - *(p++) = HOST1X_OPCODE_NOP; - *(p++) = HOST1X_OPCODE_NOP; - dev_dbg(host1x->dev, "%s: NOP at %pad+%#x\n", __func__, - &pb->dma, getptr); - getptr = (getptr + 8) & (pb->size - 1); - } - - wmb(); } /*
Currently gathers of a hung job are getting NOP'ed and a restarted CDMA executes the NOP'ed gathers. There shouldn't be a reason to not restart CDMA execution starting with a next job, avoiding the unnecessary churning with gathers NOP'ing. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/gpu/host1x/cdma.c | 23 +++++++++++------------ drivers/gpu/host1x/hw/cdma_hw.c | 13 ------------- 2 files changed, 11 insertions(+), 25 deletions(-)