Commit e60770a0 authored by Arnaldo Carvalho de Melo's avatar Arnaldo Carvalho de Melo
Browse files

perf test: Allow running just a subset of the available tests 



To obtain a list of available tests:

[root@emilia linux]# perf test list
 1: vmlinux symtab matches kallsyms
 2: detect open syscall event
 3: detect open syscall event on all cpus
 4: read samples using the mmap interface
 5: parse events tests
[root@emilia linux]#

To list just a subset:

[root@emilia linux]# perf test list syscall
 2: detect open syscall event
 3: detect open syscall event on all cpus
[root@emilia linux]#

To run a subset:

[root@emilia linux]# perf test detect
 2: detect open syscall event: Ok
 3: detect open syscall event on all cpus: Ok
[root@emilia linux]#

Specific tests can be chosen by number:

[root@emilia linux]# perf test 1 3 parse
 1: vmlinux symtab matches kallsyms: Ok
 3: detect open syscall event on all cpus: Ok
 5: parse events tests: Ok
[root@emilia linux]#

Now to write more tests!

Suggested-by: default avatarPeter Zijlstra <peterz@infradead.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-nqec2145qfxdgimux28aw7v8@git.kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 806fb630

tools/perf/Documentation/perf-test.txt

+7 −1
Original line number Diff line number Diff line
@@ -8,13 +8,19 @@ perf-test - Runs sanity tests. 
SYNOPSIS

--------

[verse]

'perf test <options>'

'perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]'



DESCRIPTION

-----------

This command does assorted sanity tests, initially through linked routines but

also will look for a directory with more tests in the form of scripts.



To get a list of available tests use 'perf test list', specifying a test name

fragment will show all tests that have it.



To run just specific tests, inform test name fragments or the numbers obtained

from 'perf test list'.



OPTIONS

-------

-v::

tools/perf/builtin-test.c

+60 −21
Original line number Diff line number Diff line
@@ -15,8 +15,6 @@ 
#include "util/thread_map.h"

#include "../../include/linux/hw_breakpoint.h"



static long page_size;



static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym)

{

	bool *visited = symbol__priv(sym);
@@ -32,6 +30,7 @@ static int test__vmlinux_matches_kallsyms(void) 
	struct map *kallsyms_map, *vmlinux_map;

	struct machine kallsyms, vmlinux;

	enum map_type type = MAP__FUNCTION;

	long page_size = sysconf(_SC_PAGE_SIZE);

	struct ref_reloc_sym ref_reloc_sym = { .name = "_stext", };



	/*
@@ -871,41 +870,81 @@ static struct test { 
	},

};



static int __cmd_test(void)

static bool perf_test__matches(int curr, int argc, const char *argv[])

{

	int i = 0;

	int i;



	if (argc == 0)

		return true;



	page_size = sysconf(_SC_PAGE_SIZE);

	for (i = 0; i < argc; ++i) {

		char *end;

		long nr = strtoul(argv[i], &end, 10);



		if (*end == '\0') {

			if (nr == curr + 1)

				return true;

			continue;

		}



		if (strstr(tests[curr].desc, argv[i]))

			return true;

	}



	return false;

}



static int __cmd_test(int argc, const char *argv[])

{

	int i = 0;



	while (tests[i].func) {

		int err;

		pr_info("%2d: %s:", i + 1, tests[i].desc);

		int curr = i++, err;



		if (!perf_test__matches(curr, argc, argv))

			continue;



		pr_info("%2d: %s:", i, tests[curr].desc);

		pr_debug("\n--- start ---\n");

		err = tests[i].func();

		pr_debug("---- end ----\n%s:", tests[i].desc);

		err = tests[curr].func();

		pr_debug("---- end ----\n%s:", tests[curr].desc);

		pr_info(" %s\n", err ? "FAILED!\n" : "Ok");

		++i;

	}



	return 0;

}



static const char * const test_usage[] = {

	"perf test [<options>]",

static int perf_test__list(int argc, const char **argv)

{

	int i = 0;



	while (tests[i].func) {

		int curr = i++;



		if (argc > 1 && !strstr(tests[curr].desc, argv[1]))

			continue;



		pr_info("%2d: %s\n", i, tests[curr].desc);

	}



	return 0;

}



int cmd_test(int argc, const char **argv, const char *prefix __used)

{

	const char * const test_usage[] = {

	"perf test [<options>] [{list <test-name-fragment>|[<test-name-fragments>|<test-numbers>]}]",

	NULL,

	};



static const struct option test_options[] = {

	const struct option test_options[] = {

	OPT_INTEGER('v', "verbose", &verbose,

		    "be more verbose (show symbol address, etc)"),

	OPT_END()

	};



int cmd_test(int argc, const char **argv, const char *prefix __used)

{

	argc = parse_options(argc, argv, test_options, test_usage, 0);

	if (argc)

		usage_with_options(test_usage, test_options);

	if (argc >= 1 && !strcmp(argv[0], "list"))

		return perf_test__list(argc, argv);



	symbol_conf.priv_size = sizeof(int);

	symbol_conf.sort_by_name = true;
@@ -916,5 +955,5 @@ int cmd_test(int argc, const char **argv, const char *prefix __used) 


	setup_pager();



	return __cmd_test();

	return __cmd_test(argc, argv);

}

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