[dpdk-dev] [PATCH] eal: store control thread CPU affinity in TLS
David Marchand
david.marchand at redhat.com
Fri Mar 13 09:34:03 CET 2020
On Wed, Feb 5, 2020 at 11:24 AM <jerinj at marvell.com> wrote:
>
> From: Jerin Jacob <jerinj at marvell.com>
>
> _cpuset TLS variable stores the CPU affinity of eal thread.
> Populate the _cpuset TLS variable for control thread to
>
> 1) Make rte_thread_get_affinity() and eal_thread_dump_affinity
> functional with control thread.
> 2) Quick access to cpu affinity.
>
> Signed-off-by: Jerin Jacob <jerinj at marvell.com>
> ---
> lib/librte_eal/common/eal_common_thread.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/lib/librte_eal/common/eal_common_thread.c b/lib/librte_eal/common/eal_common_thread.c
> index 78581753c..99fe1aa4e 100644
> --- a/lib/librte_eal/common/eal_common_thread.c
> +++ b/lib/librte_eal/common/eal_common_thread.c
> @@ -152,10 +152,14 @@ struct rte_thread_ctrl_params {
> static void *rte_thread_init(void *arg)
> {
> int ret;
> + rte_cpuset_t *cpuset = &internal_config.ctrl_cpuset;
> struct rte_thread_ctrl_params *params = arg;
> void *(*start_routine)(void *) = params->start_routine;
> void *routine_arg = params->arg;
>
> + /* Store cpuset in TLS for quick access */
> + memmove(&RTE_PER_LCORE(_cpuset), cpuset, sizeof(rte_cpuset_t));
> +
> ret = pthread_barrier_wait(¶ms->configured);
> if (ret == PTHREAD_BARRIER_SERIAL_THREAD) {
> pthread_barrier_destroy(¶ms->configured);
Reviewed-by: David Marchand <david.marchand at redhat.com>
--
David Marchand
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