Added checks for null pointers. Removed logically dead
code. Fix division or modulo by zero. Fix evaludation
order violation issues.
Coverity issue: 383658 383659, 383664, 383665
Fixes: 817e3e55bb18 ("ml/cnxk: support simulator environment")
Fixes: da3325131d71 ("ml/cnxk: find OCM mask and page slots for a model")
Fixes: b7d0650ebce0 ("ml/cnxk: reserve and free OCM pages")
Fixes: 4ff4ab8e1a20 ("ml/cnxk: support extended statistics")
Signed-off-by: Srikanth Yalavarthi <syalavar...@marvell.com>
---
drivers/ml/cnxk/cn10k_ml_dev.c | 4 ++--
drivers/ml/cnxk/cn10k_ml_ocm.c | 33 +++++++--------------------------
drivers/ml/cnxk/cn10k_ml_ops.c | 3 ++-
3 files changed, 11 insertions(+), 29 deletions(-)
diff --git a/drivers/ml/cnxk/cn10k_ml_dev.c b/drivers/ml/cnxk/cn10k_ml_dev.c
index 6f9a1015a6..bba3c9022e 100644
--- a/drivers/ml/cnxk/cn10k_ml_dev.c
+++ b/drivers/ml/cnxk/cn10k_ml_dev.c
@@ -779,8 +779,8 @@ cn10k_ml_fw_load(struct cn10k_ml_dev *mldev)
if (roc_env_is_emulator() || roc_env_is_hw()) {
/* Read firmware image to a buffer */
ret = rte_firmware_read(fw->path, &fw_buffer, &fw_size);
- if (ret < 0) {
- plt_err("Can't read firmware data: %s\n", fw->path);
+ if ((ret < 0) || (fw_buffer == NULL)) {
+ plt_err("Unable to read firmware data: %s\n", fw->path);
return ret;
}
diff --git a/drivers/ml/cnxk/cn10k_ml_ocm.c b/drivers/ml/cnxk/cn10k_ml_ocm.c
index d8d2c71a3c..f0f76b83b3 100644
--- a/drivers/ml/cnxk/cn10k_ml_ocm.c
+++ b/drivers/ml/cnxk/cn10k_ml_ocm.c
@@ -224,7 +224,6 @@ cn10k_ml_ocm_tilemask_find(struct rte_ml_dev *dev, uint8_t
num_tiles, uint16_t w
uint16_t scratch_page_start;
int used_last_wb_page_max;
uint16_t scratch_page_end;
- uint8_t search_start_tile;
uint8_t search_end_tile;
uint8_t *local_ocm_mask;
int wb_page_start_curr;
@@ -235,7 +234,6 @@ cn10k_ml_ocm_tilemask_find(struct rte_ml_dev *dev, uint8_t
num_tiles, uint16_t w
uint16_t word_id;
uint8_t tile_idx;
int max_slot_sz;
- int start_tile;
int page_id;
mldev = dev->data->dev_private;
@@ -250,28 +248,14 @@ cn10k_ml_ocm_tilemask_find(struct rte_ml_dev *dev,
uint8_t num_tiles, uint16_t w
wb_page_start = -1;
used_scratch_pages_max = 0;
used_last_wb_page_max = -1;
- start_tile = -1;
max_slot_sz_curr = 0;
max_slot_sz = 0;
tile_idx = 0;
- if ((start_tile != -1) && (start_tile % num_tiles != 0)) {
- plt_err("Invalid start_tile, %d", start_tile);
- return -1;
- }
-
- if (start_tile < 0) {
- search_start_tile = 0;
- search_end_tile = ocm->num_tiles - num_tiles;
- } else {
- search_start_tile = start_tile;
- search_end_tile = start_tile;
- }
-
- /* nibbles + prefix '0x' */
+ search_end_tile = ocm->num_tiles - num_tiles;
local_ocm_mask = rte_zmalloc("local_ocm_mask", mldev->ocm.mask_words,
RTE_CACHE_LINE_SIZE);
+ tile_start = 0;
- tile_start = search_start_tile;
start_search:
used_scratch_pages_max = 0;
used_last_wb_page_max = -1;
@@ -423,10 +407,8 @@ cn10k_ml_ocm_free_pages(struct rte_ml_dev *dev, uint16_t
model_id)
wb_page_end = wb_page_start + model->model_mem_map.wb_pages - 1;
for (tile_id = model->addr.tile_start; tile_id <= model->addr.tile_end;
tile_id++) {
for (page_id = wb_page_start; page_id <= wb_page_end;
page_id++) {
- ocm->tile_ocm_info[tile_id].ocm_mask[page_id /
OCM_MAP_WORD_SIZE] =
- CLEAR_BIT(ocm->tile_ocm_info[tile_id]
- .ocm_mask[page_id /
OCM_MAP_WORD_SIZE],
- page_id % OCM_MAP_WORD_SIZE);
+ CLEAR_BIT(ocm->tile_ocm_info[tile_id].ocm_mask[page_id
/ OCM_MAP_WORD_SIZE],
+ page_id % OCM_MAP_WORD_SIZE);
}
/* Update last_wb_page size */
@@ -452,10 +434,9 @@ cn10k_ml_ocm_free_pages(struct rte_ml_dev *dev, uint16_t
model_id)
prev_start = ocm->num_pages -
ocm->tile_ocm_info[tile_id].scratch_pages;
curr_start = ocm->num_pages - scratch_resize_pages;
for (page_id = prev_start; page_id < curr_start;
page_id++) {
- ocm->tile_ocm_info[tile_id].ocm_mask[page_id /
OCM_MAP_WORD_SIZE] =
- CLEAR_BIT(ocm->tile_ocm_info[tile_id]
- .ocm_mask[page_id /
OCM_MAP_WORD_SIZE],
- page_id % OCM_MAP_WORD_SIZE);
+ CLEAR_BIT(ocm->tile_ocm_info[tile_id]
+ .ocm_mask[page_id /
OCM_MAP_WORD_SIZE],
+ page_id % OCM_MAP_WORD_SIZE);
}
ocm->tile_ocm_info[tile_id].scratch_pages =
scratch_resize_pages;
}
diff --git a/drivers/ml/cnxk/cn10k_ml_ops.c b/drivers/ml/cnxk/cn10k_ml_ops.c
index 7d5eb97668..bf9409ad10 100644
--- a/drivers/ml/cnxk/cn10k_ml_ops.c
+++ b/drivers/ml/cnxk/cn10k_ml_ops.c
@@ -444,7 +444,8 @@ cn10k_ml_prep_fp_job_descriptor(struct rte_ml_dev *dev,
struct cn10k_ml_req *req
count += model->burst_stats[qp_id].dequeued_count -
\
model->burst_stats[qp_id].str##_reset_count;
\
}
\
- value = value / count;
\
+ if (count != 0)
\
+ value = value / count;
\
} while (0)
#define ML_MIN_FOREACH_QP(dev, model, qp_id, str, value, count)
\
--
2.17.1
