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perf test: Add a test for the new Arm CPU ID comparison behavior

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Now that variant and revision fields are taken into account the behavior
is slightly more complicated so add a test to ensure that this behaves
as expected.

Reviewed-by: John Garry <john.g.garry@oracle.com>
Signed-off-by: James Clark <james.clark@arm.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Haixin Yu <yuhaixin.yhx@linux.alibaba.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Forrington <nick.forrington@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Sohom Datta <sohomdatta1@gmail.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20230816114841.1679234-3-james.clark@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
James Clark 2023-08-16 12:47:44 +01:00 committed by Arnaldo Carvalho de Melo
parent c3e1e8cf00
commit 81f7da549a
4 changed files with 45 additions and 0 deletions
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3
tools/perf/arch/arm64/include/arch-tests.h
View File

@ -2,6 +2,9 @@
#ifndef ARCH_TESTS_H
#define ARCH_TESTS_H
struct test_suite;
int test__cpuid_match(struct test_suite *test, int subtest);
extern struct test_suite *arch_tests[];
#endif

1
tools/perf/arch/arm64/tests/Build
View File

@ -2,3 +2,4 @@ perf-y += regs_load.o
perf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o
perf-y += arch-tests.o
perf-y += cpuid-match.o

4
tools/perf/arch/arm64/tests/arch-tests.c
View File

@ -3,9 +3,13 @@
#include "tests/tests.h"
#include "arch-tests.h"
DEFINE_SUITE("arm64 CPUID matching", cpuid_match);
struct test_suite *arch_tests[] = {
#ifdef HAVE_DWARF_UNWIND_SUPPORT
&suite__dwarf_unwind,
#endif
&suite__cpuid_match,
NULL,
};

37
tools/perf/arch/arm64/tests/cpuid-match.c Normal file
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@ -0,0 +1,37 @@
// SPDX-License-Identifier: GPL-2.0
#include <linux/compiler.h>
#include "arch-tests.h"
#include "tests/tests.h"
#include "util/header.h"
int test__cpuid_match(struct test_suite *test __maybe_unused,
int subtest __maybe_unused)
{
/* midr with no leading zeros matches */
if (strcmp_cpuid_str("0x410fd0c0", "0x00000000410fd0c0"))
return -1;
/* Upper case matches */
if (strcmp_cpuid_str("0x410fd0c0", "0x00000000410FD0C0"))
return -1;
/* r0p0 = r0p0 matches */
if (strcmp_cpuid_str("0x00000000410fd480", "0x00000000410fd480"))
return -1;
/* r0p1 > r0p0 matches */
if (strcmp_cpuid_str("0x00000000410fd480", "0x00000000410fd481"))
return -1;
/* r1p0 > r0p0 matches*/
if (strcmp_cpuid_str("0x00000000410fd480", "0x00000000411fd480"))
return -1;
/* r0p0 < r0p1 doesn't match */
if (!strcmp_cpuid_str("0x00000000410fd481", "0x00000000410fd480"))
return -1;
/* r0p0 < r1p0 doesn't match */
if (!strcmp_cpuid_str("0x00000000411fd480", "0x00000000410fd480"))
return -1;
/* Different CPU doesn't match */
if (!strcmp_cpuid_str("0x00000000410fd4c0", "0x00000000430f0af0"))
return -1;
return 0;
}