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 v3:
- remove find_vdso_map() call find_map() with VDSO__MAP_NAME
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/Makefile.perf | 4 ++--
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/perf-read-vdso.c | 6 ++---
tools/perf/tests/tests.h | 5 ++++
.../perf/util/{find-vdso-map.c => find-map.c} | 7 +++---
tools/perf/util/vdso.c | 6 ++---
8 files changed, 45 insertions(+), 12 deletions(-)
create mode 100644 tools/perf/arch/arm/tests/vectors-page.c
rename tools/perf/util/{find-vdso-map.c => find-map.c} (71%)
--
2.17.1
