Commit 21327c78 authored by Florian Fainelli's avatar Florian Fainelli Committed by Arnaldo Carvalho de Melo

perf tests: Add a test for the ARM 32-bit [vectors] page

perf on ARM requires CONFIG_KUSER_HELPERS to be turned on to allow some
independance with respect to the ARM CPU being used. Add a test which
tries to locate the [vectors] page, created when CONFIG_KUSER_HELPERS is
turned on to help asses the system's health.
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Russell King <rmk+kernel@armlinux.org.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Link: http://lkml.kernel.org/r/20181221034337.26663-3-f.fainelli@gmail.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 01153237
libperf-y += regs_load.o libperf-y += regs_load.o
libperf-y += dwarf-unwind.o libperf-y += dwarf-unwind.o
libperf-y += vectors-page.o
libperf-y += arch-tests.o libperf-y += arch-tests.o
...@@ -10,6 +10,10 @@ struct test arch_tests[] = { ...@@ -10,6 +10,10 @@ struct test arch_tests[] = {
.func = test__dwarf_unwind, .func = test__dwarf_unwind,
}, },
#endif #endif
{
.desc = "Vectors page",
.func = test__vectors_page,
},
{ {
.func = NULL, .func = NULL,
}, },
......
// SPDX-License-Identifier: GPL-2.0
#include <stdio.h>
#include <string.h>
#include <linux/compiler.h>
#include "debug.h"
#include "tests/tests.h"
#include "util/find-map.c"
#define VECTORS__MAP_NAME "[vectors]"
int test__vectors_page(struct test *test __maybe_unused,
int subtest __maybe_unused)
{
void *start, *end;
if (find_map(&start, &end, VECTORS__MAP_NAME)) {
pr_err("%s not found, is CONFIG_KUSER_HELPERS enabled?\n",
VECTORS__MAP_NAME);
return TEST_FAIL;
}
return TEST_OK;
}
...@@ -119,4 +119,9 @@ int test__arch_unwind_sample(struct perf_sample *sample, ...@@ -119,4 +119,9 @@ int test__arch_unwind_sample(struct perf_sample *sample,
struct thread *thread); struct thread *thread);
#endif #endif
#endif #endif
#if defined(__arm__)
int test__vectors_page(struct test *test, int subtest);
#endif
#endif /* TESTS_H */ #endif /* TESTS_H */
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