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Subject[PATCH 5/5] media: venus: Update core selection
Date
Present core assignment is static. Introduced load balancing
across the cores. Load on earch core is calculated and core
with minimum load is assigned to given instance.

Signed-off-by: Aniket Masule <amasule@codeaurora.org>
---
drivers/media/platform/qcom/venus/helpers.c | 50 +++++++++++++++++++++++++----
drivers/media/platform/qcom/venus/helpers.h | 2 +-
drivers/media/platform/qcom/venus/vdec.c | 5 +--
drivers/media/platform/qcom/venus/venc.c | 4 ++-
4 files changed, 51 insertions(+), 10 deletions(-)

diff --git a/drivers/media/platform/qcom/venus/helpers.c b/drivers/media/platform/qcom/venus/helpers.c
index edb653e..38d617b 100644
--- a/drivers/media/platform/qcom/venus/helpers.c
+++ b/drivers/media/platform/qcom/venus/helpers.c
@@ -497,6 +497,16 @@ static int load_scale_clocks(struct venus_inst *inst)
return scale_clocks_vpu4(inst);
}

+int set_core_usage(struct venus_inst *inst, u32 usage)
+{
+ const u32 ptype = HFI_PROPERTY_CONFIG_VIDEOCORES_USAGE;
+ struct hfi_videocores_usage_type cu;
+
+ cu.video_core_enable_mask = usage;
+
+ return hfi_session_set_property(inst, ptype, &cu);
+}
+
static void fill_buffer_desc(const struct venus_buffer *buf,
struct hfi_buffer_desc *bd, bool response)
{
@@ -800,19 +810,47 @@ int venus_helper_set_work_mode(struct venus_inst *inst, u32 mode)
}
EXPORT_SYMBOL_GPL(venus_helper_set_work_mode);

-int venus_helper_set_core_usage(struct venus_inst *inst, u32 usage)
+int venus_helper_decide_core(struct venus_inst *inst, u32 cores_max)
{
- const u32 ptype = HFI_PROPERTY_CONFIG_VIDEOCORES_USAGE;
- struct hfi_videocores_usage_type cu;
+ struct venus_core *core = inst->core;
+ u32 min_core_id = 0, core0_load = 0, core1_load = 0;
+ unsigned long min_load, max_freq, cur_inst_load;
+ int ret;

if (!IS_V4(inst->core))
return 0;

- cu.video_core_enable_mask = usage;
+ core0_load = load_per_core(core, VIDC_CORE_ID_1);
+ core1_load = load_per_core(core, VIDC_CORE_ID_2);

- return hfi_session_set_property(inst, ptype, &cu);
+ min_core_id = core0_load < core1_load ? VIDC_CORE_ID_1 : VIDC_CORE_ID_2;
+ min_load = min(core0_load, core1_load);
+
+ if (cores_max < VIDC_CORE_ID_1) {
+ min_core_id = VIDC_CORE_ID_1;
+ min_load = core0_load;
+ }
+
+ cur_inst_load = load_per_instance(inst) *
+ inst->clk_data.codec_data->vpp_cycles;
+ max_freq = core->res->freq_tbl[0].freq;
+
+ if ((cur_inst_load + min_load) > max_freq) {
+ dev_warn(core->dev, "HW is overloaded, needed: %lu max: %lu\n",
+ cur_inst_load, max_freq);
+ return -EINVAL;
+ }
+
+ ret = set_core_usage(inst, min_core_id);
+
+ if (ret)
+ return ret;
+
+ inst->clk_data.core_id = min_core_id;
+
+ return 0;
}
-EXPORT_SYMBOL_GPL(venus_helper_set_core_usage);
+EXPORT_SYMBOL_GPL(venus_helper_decide_core);

int venus_helper_init_codec_data(struct venus_inst *inst)
{
diff --git a/drivers/media/platform/qcom/venus/helpers.h b/drivers/media/platform/qcom/venus/helpers.h
index f9360a8..c41ceb3 100644
--- a/drivers/media/platform/qcom/venus/helpers.h
+++ b/drivers/media/platform/qcom/venus/helpers.h
@@ -42,7 +42,7 @@ int venus_helper_set_output_resolution(struct venus_inst *inst,
u32 buftype);
int venus_helper_set_work_mode(struct venus_inst *inst, u32 mode);
int venus_helper_init_codec_data(struct venus_inst *inst);
-int venus_helper_set_core_usage(struct venus_inst *inst, u32 usage);
+int venus_helper_decide_core(struct venus_inst *inst, u32 cores_max);
int venus_helper_set_num_bufs(struct venus_inst *inst, unsigned int input_bufs,
unsigned int output_bufs,
unsigned int output2_bufs);
diff --git a/drivers/media/platform/qcom/venus/vdec.c b/drivers/media/platform/qcom/venus/vdec.c
index 51795fd..9f988ba 100644
--- a/drivers/media/platform/qcom/venus/vdec.c
+++ b/drivers/media/platform/qcom/venus/vdec.c
@@ -544,14 +544,15 @@ static int vdec_output_conf(struct venus_inst *inst)
u32 height = inst->out_height;
u32 out_fmt, out2_fmt;
bool ubwc = false;
- u32 ptype;
+ u32 ptype, cores_max;
int ret;

ret = venus_helper_set_work_mode(inst, VIDC_WORK_MODE_2);
if (ret)
return ret;

- ret = venus_helper_set_core_usage(inst, VIDC_CORE_ID_1);
+ cores_max = core_num_max(inst);
+ ret = venus_helper_decide_core(inst, cores_max);
if (ret)
return ret;

diff --git a/drivers/media/platform/qcom/venus/venc.c b/drivers/media/platform/qcom/venus/venc.c
index 792cdce..ed39efd 100644
--- a/drivers/media/platform/qcom/venus/venc.c
+++ b/drivers/media/platform/qcom/venus/venc.c
@@ -654,13 +654,15 @@ static int venc_set_properties(struct venus_inst *inst)
struct hfi_quantization quant;
struct hfi_quantization_range quant_range;
u32 ptype, rate_control, bitrate, profile = 0, level = 0;
+ u32 cores_max;
int ret;

ret = venus_helper_set_work_mode(inst, VIDC_WORK_MODE_2);
if (ret)
return ret;

- ret = venus_helper_set_core_usage(inst, VIDC_CORE_ID_2);
+ cores_max = core_num_max(inst);
+ ret = venus_helper_decide_core(inst, cores_max);
if (ret)
return ret;

--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
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