Merge tag 'linux-kselftest-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kselftest update from Shuah Khan:
 "This kselftest update consists of:

   - resctrl_tests for resctrl file system. resctrl isn't included in
     the default TARGETS list in kselftest Makefile. It can be run
     manually.

   - Kselftest harness improvements.

   - Kselftest framework and individual test fixes to support runs on
     Kernel CI rings and other environments that use relocatable build
     and install features.

   - Minor cleanups and typo fixes"

* tag 'linux-kselftest-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (25 commits)
  selftests: enforce local header dependency in lib.mk
  selftests: Fix memfd to support relocatable build (O=objdir)
  selftests: Fix seccomp to support relocatable build (O=objdir)
  selftests/harness: Handle timeouts cleanly
  selftests/harness: Move test child waiting logic
  selftests: android: Fix custom install from skipping test progs
  selftests: android: ion: Fix ionmap_test compile error
  selftests: Fix kselftest O=objdir build from cluttering top level objdir
  selftests/seccomp: Adjust test fixture counts
  selftests/ftrace: Fix typo in trigger-multihist.tc
  selftests/timens: Remove duplicated include <time.h>
  selftests/resctrl: fix spelling mistake "Errror" -> "Error"
  selftests/resctrl: Add the test in MAINTAINERS
  selftests/resctrl: Disable MBA and MBM tests for AMD
  selftests/resctrl: Use cache index3 id for AMD schemata masks
  selftests/resctrl: Add vendor detection mechanism
  selftests/resctrl: Add Cache Allocation Technology (CAT) selftest
  selftests/resctrl: Add Cache QoS Monitoring (CQM) selftest
  selftests/resctrl: Add MBA test
  selftests/resctrl: Add MBM test
  ...

1 files changed, 202 insertions, 0 deletions

diff --git a/tools/testing/selftests/resctrl/resctrl_tests.c b/tools/testing/selftests/resctrl/resctrl_tests.c
new file mode 100644
index 000000000000..425cc85ac883
--- /dev/null
+++ b/tools/testing/selftests/resctrl/resctrl_tests.c
@@ -0,0 +1,202 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Resctrl tests
+ *
+ * Copyright (C) 2018 Intel Corporation
+ *
+ * Authors:
+ *    Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>,
+ *    Fenghua Yu <fenghua.yu@intel.com>
+ */
+#include "resctrl.h"
+
+#define BENCHMARK_ARGS		64
+#define BENCHMARK_ARG_SIZE	64
+
+bool is_amd;
+
+void detect_amd(void)
+{
+	FILE *inf = fopen("/proc/cpuinfo", "r");
+	char *res;
+
+	if (!inf)
+		return;
+
+	res = fgrep(inf, "vendor_id");
+
+	if (res) {
+		char *s = strchr(res, ':');
+
+		is_amd = s && !strcmp(s, ": AuthenticAMD\n");
+		free(res);
+	}
+	fclose(inf);
+}
+
+static void cmd_help(void)
+{
+	printf("usage: resctrl_tests [-h] [-b \"benchmark_cmd [options]\"] [-t test list] [-n no_of_bits]\n");
+	printf("\t-b benchmark_cmd [options]: run specified benchmark for MBM, MBA and CQM");
+	printf("\t default benchmark is builtin fill_buf\n");
+	printf("\t-t test list: run tests specified in the test list, ");
+	printf("e.g. -t mbm, mba, cqm, cat\n");
+	printf("\t-n no_of_bits: run cache tests using specified no of bits in cache bit mask\n");
+	printf("\t-p cpu_no: specify CPU number to run the test. 1 is default\n");
+	printf("\t-h: help\n");
+}
+
+void tests_cleanup(void)
+{
+	mbm_test_cleanup();
+	mba_test_cleanup();
+	cqm_test_cleanup();
+	cat_test_cleanup();
+}
+
+int main(int argc, char **argv)
+{
+	bool has_ben = false, mbm_test = true, mba_test = true, cqm_test = true;
+	int res, c, cpu_no = 1, span = 250, argc_new = argc, i, no_of_bits = 5;
+	char *benchmark_cmd[BENCHMARK_ARGS], bw_report[64], bm_type[64];
+	char benchmark_cmd_area[BENCHMARK_ARGS][BENCHMARK_ARG_SIZE];
+	int ben_ind, ben_count;
+	bool cat_test = true;
+
+	for (i = 0; i < argc; i++) {
+		if (strcmp(argv[i], "-b") == 0) {
+			ben_ind = i + 1;
+			ben_count = argc - ben_ind;
+			argc_new = ben_ind - 1;
+			has_ben = true;
+			break;
+		}
+	}
+
+	while ((c = getopt(argc_new, argv, "ht:b:")) != -1) {
+		char *token;
+
+		switch (c) {
+		case 't':
+			token = strtok(optarg, ",");
+
+			mbm_test = false;
+			mba_test = false;
+			cqm_test = false;
+			cat_test = false;
+			while (token) {
+				if (!strcmp(token, "mbm")) {
+					mbm_test = true;
+				} else if (!strcmp(token, "mba")) {
+					mba_test = true;
+				} else if (!strcmp(token, "cqm")) {
+					cqm_test = true;
+				} else if (!strcmp(token, "cat")) {
+					cat_test = true;
+				} else {
+					printf("invalid argument\n");
+
+					return -1;
+				}
+				token = strtok(NULL, ":\t");
+			}
+			break;
+		case 'p':
+			cpu_no = atoi(optarg);
+			break;
+		case 'n':
+			no_of_bits = atoi(optarg);
+			break;
+		case 'h':
+			cmd_help();
+
+			return 0;
+		default:
+			printf("invalid argument\n");
+
+			return -1;
+		}
+	}
+
+	printf("TAP version 13\n");
+
+	/*
+	 * Typically we need root privileges, because:
+	 * 1. We write to resctrl FS
+	 * 2. We execute perf commands
+	 */
+	if (geteuid() != 0)
+		printf("# WARNING: not running as root, tests may fail.\n");
+
+	/* Detect AMD vendor */
+	detect_amd();
+
+	if (has_ben) {
+		/* Extract benchmark command from command line. */
+		for (i = ben_ind; i < argc; i++) {
+			benchmark_cmd[i - ben_ind] = benchmark_cmd_area[i];
+			sprintf(benchmark_cmd[i - ben_ind], "%s", argv[i]);
+		}
+		benchmark_cmd[ben_count] = NULL;
+	} else {
+		/* If no benchmark is given by "-b" argument, use fill_buf. */
+		for (i = 0; i < 6; i++)
+			benchmark_cmd[i] = benchmark_cmd_area[i];
+
+		strcpy(benchmark_cmd[0], "fill_buf");
+		sprintf(benchmark_cmd[1], "%d", span);
+		strcpy(benchmark_cmd[2], "1");
+		strcpy(benchmark_cmd[3], "1");
+		strcpy(benchmark_cmd[4], "0");
+		strcpy(benchmark_cmd[5], "");
+		benchmark_cmd[6] = NULL;
+	}
+
+	sprintf(bw_report, "reads");
+	sprintf(bm_type, "fill_buf");
+
+	check_resctrlfs_support();
+	filter_dmesg();
+
+	if (!is_amd && mbm_test) {
+		printf("# Starting MBM BW change ...\n");
+		if (!has_ben)
+			sprintf(benchmark_cmd[5], "%s", "mba");
+		res = mbm_bw_change(span, cpu_no, bw_report, benchmark_cmd);
+		printf("%sok MBM: bw change\n", res ? "not " : "");
+		mbm_test_cleanup();
+		tests_run++;
+	}
+
+	if (!is_amd && mba_test) {
+		printf("# Starting MBA Schemata change ...\n");
+		if (!has_ben)
+			sprintf(benchmark_cmd[1], "%d", span);
+		res = mba_schemata_change(cpu_no, bw_report, benchmark_cmd);
+		printf("%sok MBA: schemata change\n", res ? "not " : "");
+		mba_test_cleanup();
+		tests_run++;
+	}
+
+	if (cqm_test) {
+		printf("# Starting CQM test ...\n");
+		if (!has_ben)
+			sprintf(benchmark_cmd[5], "%s", "cqm");
+		res = cqm_resctrl_val(cpu_no, no_of_bits, benchmark_cmd);
+		printf("%sok CQM: test\n", res ? "not " : "");
+		cqm_test_cleanup();
+		tests_run++;
+	}
+
+	if (cat_test) {
+		printf("# Starting CAT test ...\n");
+		res = cat_perf_miss_val(cpu_no, no_of_bits, "L3");
+		printf("%sok CAT: test\n", res ? "not " : "");
+		tests_run++;
+		cat_test_cleanup();
+	}
+
+	printf("1..%d\n", tests_run);
+
+	return 0;
+}