Hi all, I just painfully learned that perf would segfault when CONFIG_KUSER_HELPERS is disabled because it unconditionally makes use of it. This patch series adds an ARM test for that by leveraging the existing find_vdso_map() function and making it more generic and capable of location any map within /proc/self/maps.
Changes in v2: - use strlen() instead of sizeof() -1 since we made the page name a parameter - use TEST_OK/TEST_FAIL in lieu of 0/-1 - added an error message indicating CONFIG_KUSER_HELPERS might be disabled Florian Fainelli (2): perf tools: Make find_vdso_map() more modular perf tests: Add a test for the ARM 32-bit [vectors] page 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 ++++ tools/perf/util/find-map.c | 31 ++++++++++++++++++++++++ tools/perf/util/find-vdso-map.c | 30 +++-------------------- 6 files changed, 68 insertions(+), 27 deletions(-) create mode 100644 tools/perf/arch/arm/tests/vectors-page.c create mode 100644 tools/perf/util/find-map.c -- 2.17.1
