Commit-ID: 21327c7843e9169d5e2e527713e60e6c9842a56c Gitweb: https://git.kernel.org/tip/21327c7843e9169d5e2e527713e60e6c9842a56c Author: Florian Fainelli <f.faine...@gmail.com> AuthorDate: Thu, 20 Dec 2018 19:43:37 -0800 Committer: Arnaldo Carvalho de Melo <a...@redhat.com> CommitDate: Tue, 8 Jan 2019 13:28:13 -0300
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: Florian Fainelli <f.faine...@gmail.com> Acked-by: Jiri Olsa <jo...@kernel.org> Cc: Alexander Shishkin <alexander.shish...@linux.intel.com> Cc: Chris Healy <cphe...@gmail.com> Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org> Cc: Kim Phillips <kim.phill...@arm.com> Cc: Lucas Stach <l.st...@pengutronix.de> Cc: Namhyung Kim <namhy...@kernel.org> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Ravi Bangoria <ravi.bango...@linux.ibm.com> Cc: Russell King <rmk+ker...@armlinux.org.uk> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Thomas Richter <tmri...@linux.ibm.com> Link: http://lkml.kernel.org/r/20181221034337.26663-3-f.faine...@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <a...@redhat.com> --- tools/perf/arch/arm/tests/Build | 1 + tools/perf/arch/arm/tests/arch-tests.c | 4 ++++ tools/perf/arch/arm/tests/vectors-page.c | 24 ++++++++++++++++++++++++ tools/perf/tests/tests.h | 5 +++++ 4 files changed, 34 insertions(+) diff --git a/tools/perf/arch/arm/tests/Build b/tools/perf/arch/arm/tests/Build index 883c57ff0c08..d9ae2733f9cc 100644 --- a/tools/perf/arch/arm/tests/Build +++ b/tools/perf/arch/arm/tests/Build @@ -1,4 +1,5 @@ libperf-y += regs_load.o libperf-y += dwarf-unwind.o +libperf-y += vectors-page.o libperf-y += arch-tests.o diff --git a/tools/perf/arch/arm/tests/arch-tests.c b/tools/perf/arch/arm/tests/arch-tests.c index 5b1543c98022..6848101a855f 100644 --- a/tools/perf/arch/arm/tests/arch-tests.c +++ b/tools/perf/arch/arm/tests/arch-tests.c @@ -10,6 +10,10 @@ struct test arch_tests[] = { .func = test__dwarf_unwind, }, #endif + { + .desc = "Vectors page", + .func = test__vectors_page, + }, { .func = NULL, }, diff --git a/tools/perf/arch/arm/tests/vectors-page.c b/tools/perf/arch/arm/tests/vectors-page.c new file mode 100644 index 000000000000..7ffdd79971c8 --- /dev/null +++ b/tools/perf/arch/arm/tests/vectors-page.c @@ -0,0 +1,24 @@ +// 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; +} diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h index b82f55fcc294..399f18ca71a3 100644 --- a/tools/perf/tests/tests.h +++ b/tools/perf/tests/tests.h @@ -119,4 +119,9 @@ int test__arch_unwind_sample(struct perf_sample *sample, struct thread *thread); #endif #endif + +#if defined(__arm__) +int test__vectors_page(struct test *test, int subtest); +#endif + #endif /* TESTS_H */
