Commit 2dd64cf9 authored Apr 11, 2022 by paul luse Committed by Jim Harris May 23, 2022

examples/accel_perf: fail correctly when we can't get a channel



By design there is a limit to how many channels the idxd driver
can suport based on how many DSA instances are available.  When we
reach the limit we won't be able to get a channel.  This fixes that
error path to fail gracefully instead of seg faulting.

Signed-off-by: paul luse <paul.e.luse@intel.com>
Change-Id: I226f59913cb830eae0707623ae251ba19bce9aaf
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12218


Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@nvidia.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>

parent 81d3cc1b

examples/accel/perf/accel_perf.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -701,6 +701,10 @@ _init_thread(void *arg1)
		g_workers = worker;
		pthread_mutex_unlock(&g_workers_lock);
		worker->ch = spdk_accel_engine_get_io_channel();
		if (worker->ch == NULL) {
		fprintf(stderr, "Unable to get an accel channel\n");
		goto error;
		}

		TAILQ_INIT(&worker->tasks_pool);

		@@ -757,7 +761,6 @@ error:
		free(worker->rnd_data);
		_free_task_buffers_in_pool(worker);
		free(worker->task_base);
		free(worker);
		spdk_app_stop(-1);
		}