[v5,1/2] dmadev: support stats reset telemetry command
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Commit Message
The stats reset is useful for debugging, so add it to the dmadev
telemetry command lists.
Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Reviewed-by: Bruce Richardson <bruce.richardson@intel.com>
---
lib/dmadev/rte_dmadev.c | 47 +++++++++++++++++++++++++++++++++++++++++
1 file changed, 47 insertions(+)
@@ -994,6 +994,51 @@ dmadev_handle_dev_stats(const char *cmd __rte_unused,
return 0;
}
+static int
+dmadev_handle_dev_stats_reset(const char *cmd __rte_unused,
+ const char *params,
+ struct rte_tel_data *d)
+{
+ struct rte_dma_info dma_info;
+ int dev_id, ret, vchan_id;
+ const char *vchan_param;
+ char *end_param;
+
+ if (params == NULL || strlen(params) == 0 || !isdigit(*params))
+ return -EINVAL;
+
+ dev_id = strtoul(params, &end_param, 0);
+
+ /* Function info_get validates dev_id so we don't need to. */
+ ret = rte_dma_info_get(dev_id, &dma_info);
+ if (ret < 0)
+ return -EINVAL;
+
+ /* If the device has one vchan the user does not need to supply the
+ * vchan id and only the device id is needed, no extra parameters.
+ */
+ if (dma_info.nb_vchans == 1 && *end_param == '\0') {
+ vchan_id = 0;
+ } else {
+ vchan_param = strtok(end_param, ",");
+ if (vchan_param == NULL || strlen(vchan_param) == 0 || !isdigit(*vchan_param))
+ return -EINVAL;
+ vchan_id = strtoul(vchan_param, &end_param, 0);
+ }
+ if (*end_param != '\0')
+ RTE_DMA_LOG(WARNING, "Extra parameters passed to dmadev telemetry command, ignoring");
+
+ ret = rte_dma_stats_reset(dev_id, vchan_id);
+ if (ret == 0) {
+ rte_tel_data_string(d, "success");
+ RTE_DMA_LOG(NOTICE, "Device %d reset stats success", dev_id);
+ } else {
+ RTE_DMA_LOG(ERR, "Device %d reset stats failed! ret: %d", dev_id, ret);
+ }
+
+ return ret;
+}
+
#ifndef RTE_EXEC_ENV_WINDOWS
static int
dmadev_handle_dev_dump(const char *cmd __rte_unused,
@@ -1041,6 +1086,8 @@ RTE_INIT(dmadev_init_telemetry)
"Returns information for a dmadev. Parameters: int dev_id");
rte_telemetry_register_cmd("/dmadev/stats", dmadev_handle_dev_stats,
"Returns the stats for a dmadev vchannel. Parameters: int dev_id, vchan_id (Optional if only one vchannel)");
+ rte_telemetry_register_cmd("/dmadev/stats_reset", dmadev_handle_dev_stats_reset,
+ "Reset the stats for a dmadev vchannel. Parameters: int dev_id, vchan_id (Optional if only one vchannel)");
#ifndef RTE_EXEC_ENV_WINDOWS
rte_telemetry_register_cmd("/dmadev/dump", dmadev_handle_dev_dump,
"Returns dump information for a dmadev. Parameters: int dev_id");