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gpu: host1x: Optimize BOs usage when firewall is enabled

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We don't need to hold and pin original BOs of the gathers in a case of
enabled firewall because in this case gather's content is copied and the
copy is used by the executed job.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2020-06-29 06:18:39 +03:00 committed by Thierry Reding
parent b3f1b76071
commit 26c8de5e5d
1 changed files with 12 additions and 2 deletions
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14
drivers/gpu/host1x/job.c
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@ -27,10 +27,13 @@ struct host1x_job *host1x_job_alloc(struct host1x_channel *ch,
u32 num_cmdbufs, u32 num_relocs)
{
struct host1x_job *job = NULL;
unsigned int num_unpins = num_cmdbufs + num_relocs;
unsigned int num_unpins = num_relocs;
u64 total;
void *mem;
if (!IS_ENABLED(CONFIG_TEGRA_HOST1X_FIREWALL))
num_unpins += num_cmdbufs;
/* Check that we're not going to overflow */
total = sizeof(struct host1x_job) +
(u64)num_relocs * sizeof(struct host1x_reloc) +
@ -183,6 +186,13 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)
job->num_unpins++;
}
/*
* We will copy gathers BO content later, so there is no need to
* hold and pin them.
*/
if (IS_ENABLED(CONFIG_TEGRA_HOST1X_FIREWALL))
return 0;
for (i = 0; i < job->num_gathers; i++) {
struct host1x_job_gather *g = &job->gathers[i];
size_t gather_size = 0;
@ -216,7 +226,7 @@ static unsigned int pin_job(struct host1x *host, struct host1x_job *job)
goto unpin;
}
if (!IS_ENABLED(CONFIG_TEGRA_HOST1X_FIREWALL) && host->domain) {
if (host->domain) {
for_each_sg(sgt->sgl, sg, sgt->nents, j)
gather_size += sg->length;
gather_size = iova_align(&host->iova, gather_size);