Commit 3067eaa7 authored by Andi Kleen's avatar Andi Kleen Committed by Arnaldo Carvalho de Melo
Browse files

perf test: Add test cases for new data source encoding 



Add some simple tests to perf test to test data source printing.

v2: Make the tests actually checked for the correct name of Forward
v3: Adjust to new encoding

Committer notes:

Avoid the in place declaration to make this build with older compilers,
for instance, in Debian 7 we get:

  tests/mem.c: In function 'test__mem':
  tests/mem.c:30:5: error: missing initializer [-Werror=missing-field-initializers]
  tests/mem.c:30:5: error: (near initialization for '(anonymous).<anonymous>.mem_snoop') [-Werror=missing-field-initializers]

So just zero a struct, then go on building the unions as needed,
reusing settings from the previous test, i.e. local -> remote, etc.

Signed-off-by: default avatarAndi Kleen <ak@linux.intel.com>
Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20170816222156.19953-5-andi@firstfloor.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 52839e65

tools/perf/tests/Build

+1 −0
Original line number Diff line number Diff line
@@ -34,6 +34,7 @@ perf-y += thread-map.o 
perf-y += llvm.o llvm-src-base.o llvm-src-kbuild.o llvm-src-prologue.o llvm-src-relocation.o

perf-y += bpf.o

perf-y += topology.o

perf-y += mem.o

perf-y += cpumap.o

perf-y += stat.o

perf-y += event_update.o

tools/perf/tests/builtin-test.c

+4 −0
Original line number Diff line number Diff line
@@ -47,6 +47,10 @@ static struct test generic_tests[] = { 
		.desc = "Read samples using the mmap interface",

		.func = test__basic_mmap,

	},

	{

		.desc = "Test data source output",

		.func = test__mem,

	},

	{

		.desc = "Parse event definition strings",

		.func = test__parse_events,

tools/perf/tests/mem.c

0 → 100644
+56 −0
Original line number Diff line number Diff line 
#include "util/mem-events.h"

#include "util/symbol.h"

#include "linux/perf_event.h"

#include "util/debug.h"

#include "tests.h"

#include <string.h>



static int check(union perf_mem_data_src data_src,

		  const char *string)

{

	char out[100];

	char failure[100];

	struct mem_info mi = { .data_src = data_src };



	int n;



	n = perf_mem__snp_scnprintf(out, sizeof out, &mi);

	n += perf_mem__lvl_scnprintf(out + n, sizeof out - n, &mi);

	snprintf(failure, sizeof failure, "unexpected %s", out);

	TEST_ASSERT_VAL(failure, !strcmp(string, out));

	return 0;

}



int test__mem(struct test *text __maybe_unused, int subtest __maybe_unused)

{

	int ret = 0;

	union perf_mem_data_src src;



	memset(&src, 0, sizeof(src));



	src.mem_lvl = PERF_MEM_LVL_HIT;

	src.mem_lvl_num = 4;



	ret |= check(src, "N/AL4 hit");



	src.mem_remote = 1;



	ret |= check(src, "N/ARemote L4 hit");



	src.mem_lvl = PERF_MEM_LVL_MISS;

	src.mem_lvl_num = PERF_MEM_LVLNUM_PMEM;

	src.mem_remote = 0;



	ret |= check(src, "N/APMEM miss");



	src.mem_remote = 1;



	ret |= check(src, "N/ARemote PMEM miss");



	src.mem_snoopx = PERF_MEM_SNOOPX_FWD;

	src.mem_lvl_num = PERF_MEM_LVLNUM_RAM;



	ret |= check(src , "FwdRemote RAM miss");



	return ret;

}

tools/perf/tests/tests.h

+1 −0
Original line number Diff line number Diff line
@@ -58,6 +58,7 @@ int test__python_use(struct test *test, int subtest); 
int test__bp_signal(struct test *test, int subtest);

int test__bp_signal_overflow(struct test *test, int subtest);

int test__task_exit(struct test *test, int subtest);

int test__mem(struct test *test, int subtest);

int test__sw_clock_freq(struct test *test, int subtest);

int test__code_reading(struct test *test, int subtest);

int test__sample_parsing(struct test *test, int subtest);

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