Commit f63a9f15 authored by Mark Brown's avatar Mark Brown Committed by Catalin Marinas
Browse files

kselftest/arm64: Cover ZT in the FP stress test 



Hook up the newly added zt-test program in the FPSIMD stress tests, start
a copy per CPU when SME2 is supported.

Signed-off-by: default avatarMark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221208-arm64-sme2-v4-15-f2fa0aef982f@kernel.org


Signed-off-by: default avatarCatalin Marinas <catalin.marinas@arm.com>
parent 1c07425e

tools/testing/selftests/arm64/fp/fp-stress.c

+27 −2
Original line number Diff line number Diff line
@@ -370,6 +370,19 @@ static void start_za(struct child_data *child, int vl, int cpu) 
	ksft_print_msg("Started %s\n", child->name);

}



static void start_zt(struct child_data *child, int cpu)

{

	int ret;



	ret = asprintf(&child->name, "ZT-%d", cpu);

	if (ret == -1)

		ksft_exit_fail_msg("asprintf() failed\n");



	child_start(child, "./zt-test");



	ksft_print_msg("Started %s\n", child->name);

}



static void probe_vls(int vls[], int *vl_count, int set_vl)

{

	unsigned int vq;
@@ -426,6 +439,7 @@ int main(int argc, char **argv) 
	bool all_children_started = false;

	int seen_children;

	int sve_vls[MAX_VLS], sme_vls[MAX_VLS];

	bool have_sme2;

	struct sigaction sa;



	while ((c = getopt_long(argc, argv, "t:", options, NULL)) != -1) {
@@ -458,6 +472,13 @@ int main(int argc, char **argv) 
		sme_vl_count = 0;

	}



	if (getauxval(AT_HWCAP2) & HWCAP2_SME2) {

		tests += cpus;

		have_sme2 = true;

	} else {

		have_sme2 = false;

	}



	/* Force context switching if we only have FPSIMD */

	if (!sve_vl_count && !sme_vl_count)

		fpsimd_per_cpu = 2;
@@ -468,8 +489,9 @@ int main(int argc, char **argv) 
	ksft_print_header();

	ksft_set_plan(tests);



	ksft_print_msg("%d CPUs, %d SVE VLs, %d SME VLs\n",

		       cpus, sve_vl_count, sme_vl_count);

	ksft_print_msg("%d CPUs, %d SVE VLs, %d SME VLs, SME2 %s\n",

		       cpus, sve_vl_count, sme_vl_count,

		       have_sme2 ? "present" : "absent");



	if (timeout > 0)

		ksft_print_msg("Will run for %ds\n", timeout);
@@ -527,6 +549,9 @@ int main(int argc, char **argv) 
			start_ssve(&children[num_children++], sme_vls[j], i);

			start_za(&children[num_children++], sme_vls[j], i);

		}



		if (have_sme2)

			start_zt(&children[num_children++], i);

	}



	/*