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gpu: nvgpu: keep gpu busy during vab reserve/flush ioctls

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VAB IOCTL for reserve and flush can take more than railgate_delay(500msec).
To avoid gpu entering into railgate, set gpu busy hint during entry and set to
idle at the end of ioctl.

Bug 3468562

Change-Id: I9219e65004ad42028062ce09a315d9fde029a86c
Signed-off-by: Seshendra Gadagottu <sgadagottu@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvgpu/+/2643418
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Seshendra Gadagottu
2021-12-16 11:16:09 -08:00
committed by mobile promotions
parent 54adf26042
commit 820d2b4a2d
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/nvgpu/os/linux/ioctl_prof.c
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@@ -789,11 +789,18 @@ static int nvgpu_prof_ioctl_vab_reserve(struct nvgpu_profiler_object *prof,
return -EINVAL;
}
err = gk20a_busy(g);
if (err != 0) {
nvgpu_err(g, "failed to poweron");
return -EINVAL;
}
ckr = nvgpu_kzalloc(g, sizeof(struct nvgpu_vab_range_checker) *
arg->num_range_checkers);
if (copy_from_user(ckr, user_ckr,
sizeof(struct nvgpu_vab_range_checker) *
arg->num_range_checkers)) {
gk20a_idle(g);
return -EFAULT;
}
@@ -801,6 +808,8 @@ static int nvgpu_prof_ioctl_vab_reserve(struct nvgpu_profiler_object *prof,
nvgpu_kfree(g, ckr);
gk20a_idle(g);
return err;
}
@@ -811,6 +820,12 @@ static int nvgpu_prof_ioctl_vab_flush(struct nvgpu_profiler_object *prof,
struct gk20a *g = prof->g;
u64 *user_data = nvgpu_kzalloc(g, arg->buffer_size);
err = gk20a_busy(g);
if (err != 0) {
nvgpu_err(g, "failed to poweron");
return -EINVAL;
}
err = g->ops.fb.vab.dump_and_clear(g, user_data, arg->buffer_size);
if (err < 0) {
goto fail;
@@ -824,6 +839,7 @@ static int nvgpu_prof_ioctl_vab_flush(struct nvgpu_profiler_object *prof,
fail:
nvgpu_kfree(g, user_data);
gk20a_idle(g);
return err;
}
#endif