arm: vdso: disable profiling
PATCH v5 7/12 arm: vdso: disable profiling
Take an effort to recode the arm64 vdso code from assembler to C previously submitted by Andrew Pinski <[email protected]>, rework it for use in both arm and arm64, overlapping any optimizations for each architecture. But instead of landing it in arm64, land the result into lib/vdso and unify both implementations to simplify future maintenance.
Make sure kasan and ubsan profiling, and kcov instrumentation, is turned off for VDSO code.
Signed-off-by Mark Salyzyn <[email protected]>
Cc James Morse <[email protected]>
Cc Russell King <[email protected]>
Cc Catalin Marinas <[email protected]>
Cc Will Deacon <[email protected]>
Cc Andy Lutomirski <[email protected]>
Cc Dmitry Safonov <[email protected]>
Cc John Stultz <[email protected]>
Cc Mark Rutland <[email protected]>
Cc Laura Abbott <[email protected]>
Cc Kees Cook <[email protected]>
Cc Ard Biesheuvel <[email protected]>
Cc Andy Gross <[email protected]>
Cc Kevin Brodsky <[email protected]>
Cc Andrew Pinski <[email protected]>
Cc Thomas Gleixner <[email protected]>
Cc linux-kernel at vger.kernel.org
Cc linux-arm-kernel at lists.infradead.org
v2:
- Added this to the split up of first CL, based on comments in second CL
v4:
- update commit message to reflect overall reasoning
v5:
- rebase
--- arch/arm/vdso/Makefile | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
arch/arm/vdso/Makefile +4 -1
@@ -27,8 +27,11 @@ CFLAGS_REMOVE_vdso.o = -pg CFLAGS_REMOVE_vgettimeofday.o = -pg -Os CFLAGS_vgettimeofday.o = -O2 -# Disable gcov profiling for VDSO code +# Disable gcov, kasan, ubsan and kcov profiling for VDSO code GCOV_PROFILE := n +KASAN_SANITIZE := n +UBSAN_SANITIZE := n +KCOV_INSTRUMENT := n # Force dependency $(obj)/vdso.o : $(obj)/vdso.so
Signature · 1 line
2.15.0.403.gc27cc4dac6-goog