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video: driver: Error handling for HW overload scenarios

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- send error '-EAGAIN' when there are no inactive sessions,
  HAL will retry with low priority.
- send error '-ENOMEM' when there are inactive sessions,
  Frameworks will close the inactive sessions

Change-Id: Id28a6f3c5f9d537a2789ef1522505b6ebedccc0b
Signed-off-by: Manikanta Kanamarlapudi <kmanikan@codeaurora.org>
This commit is contained in:
Manikanta Kanamarlapudi
2021-10-04 16:00:39 +05:30
committed by Gerrit - the friendly Code Review server
parent 4d51b2ba26
commit 1763bbebca
1 changed files with 10 additions and 2 deletions
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12
driver/vidc/src/msm_vidc_driver.c
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@@ -5187,15 +5187,18 @@ static int msm_vidc_print_insts_info(struct msm_vidc_core *core)
int msm_vidc_check_core_mbps(struct msm_vidc_inst *inst)
{
u32 mbps = 0;
u32 mbps = 0, num_inactive_sessions = 0;
struct msm_vidc_core *core;
struct msm_vidc_inst *instance;
u64 curr_time_ns;
int rc = 0;
if (!inst || !inst->core) {
d_vpr_e("%s: invalid params\n", __func__);
return -EINVAL;
}
core = inst->core;
curr_time_ns = ktime_get_ns();
core_lock(core, __func__);
list_for_each_entry(instance, &core->instances, list) {
@@ -5203,6 +5206,10 @@ int msm_vidc_check_core_mbps(struct msm_vidc_inst *inst)
if (is_session_error(instance))
continue;
if (!is_active_session(instance->last_qbuf_time_ns, curr_time_ns)) {
num_inactive_sessions++;
}
/* ignore thumbnail, image, and non realtime sessions */
if (is_thumbnail_session(instance) ||
is_image_session(instance) ||
@@ -5214,9 +5221,10 @@ int msm_vidc_check_core_mbps(struct msm_vidc_inst *inst)
core_unlock(core, __func__);
if (mbps > core->capabilities[MAX_MBPS].value) {
rc = num_inactive_sessions ? -ENOMEM : -EAGAIN;
i_vpr_e(inst, "%s: Hardware overloaded. needed %u, max %u", __func__,
mbps, core->capabilities[MAX_MBPS].value);
return -ENOMEM;
return rc;
}
return 0;