Hi Huisong,
On 2024/8/9 17:50, Huisong Li wrote:
> Add PM QoS configuration to declease the delay after sleep in case of
> entering deeper idle state.
>
> Signed-off-by: Huisong Li <lihuis...@huawei.com>
> Acked-by: Morten Brørup <m...@smartsharesystems.com>
> ---
> examples/l3fwd-power/main.c | 24 ++++++++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/examples/l3fwd-power/main.c b/examples/l3fwd-power/main.c
> index 2bb6b092c3..9b386c3710 100644
> --- a/examples/l3fwd-power/main.c
> +++ b/examples/l3fwd-power/main.c
> @@ -47,6 +47,7 @@
> #include <rte_telemetry.h>
> #include <rte_power_pmd_mgmt.h>
> #include <rte_power_uncore.h>
> +#include <rte_power_qos.h>
>
> #include "perf_core.h"
> #include "main.h"
> @@ -2260,6 +2261,22 @@ init_power_library(void)
> return -1;
> }
> }
> +
> + RTE_LCORE_FOREACH(lcore_id) {
> + /*
> + * Set the worker lcore's to have strict latency limit to allow
> + * the CPU to enter the shallowest idle state.
> + */
> + ret = rte_power_qos_set_cpu_resume_latency(lcore_id,
> + RTE_POWER_QOS_STRICT_LATENCY_VALUE);
> + if (ret < 0) {
> + RTE_LOG(ERR, L3FWD_POWER,
> + "Failed to set strict resume latency on
> CPU%u.\n",
suggest on core%u and use if (ret != 0)
and how about use warning, if current system don't support it, we just give a
warning message
but let's it continue.
> + lcore_id);
> + return ret;
> + }
> + }
> +
> return ret;
> }
>
> @@ -2299,6 +2316,13 @@ deinit_power_library(void)
> }
> }
> }
> +
> + RTE_LCORE_FOREACH(lcore_id) {
> + /* Restore the original value in kernel. */
> + rte_power_qos_set_cpu_resume_latency(lcore_id,
> + RTE_POWER_QOS_RESUME_LATENCY_NO_CONSTRAINT);
> + }
> +
> return ret;
> }
>
>
