[PATCH v2 0/2] perf tests: Check for ARM [vectors] page

Florian Fainelli
2018-10-25T17:55:45Z

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

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2.17.1