diff options
| author | Mark Rutland <mark.rutland@arm.com> | 2019-04-18 17:50:37 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-04-19 09:46:05 -0700 |
| commit | 40453c4f9bb6d166a56a102a8c51dd24b0801557 (patch) | |
| tree | 8e2ce6206ba9dd63666ea5334f62ac966f9a4086 | |
| parent | 3b991208b897f52507168374033771a984b947b1 (diff) | |
| download | lwn-40453c4f9bb6d166a56a102a8c51dd24b0801557.tar.gz lwn-40453c4f9bb6d166a56a102a8c51dd24b0801557.zip | |
kcov: improve CONFIG_ARCH_HAS_KCOV help text
The help text for CONFIG_ARCH_HAS_KCOV is stale, and describes the
feature as being enabled only for x86_64, when it is now enabled for
several architectures, including arm, arm64, powerpc, and s390.
Let's remove that stale help text, and update it along the lines of hat
for ARCH_HAS_FORTIFY_SOURCE, better describing when an architecture
should select CONFIG_ARCH_HAS_KCOV.
Link: http://lkml.kernel.org/r/20190412102733.5154-1-mark.rutland@arm.com
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | lib/Kconfig.debug | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 0d9e81779e37..00dbcdbc9a0d 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -753,9 +753,9 @@ endmenu # "Memory Debugging" config ARCH_HAS_KCOV bool help - KCOV does not have any arch-specific code, but currently it is enabled - only for x86_64. KCOV requires testing on other archs, and most likely - disabling of instrumentation for some early boot code. + An architecture should select this when it can successfully + build and run with CONFIG_KCOV. This typically requires + disabling instrumentation for some early boot code. config CC_HAS_SANCOV_TRACE_PC def_bool $(cc-option,-fsanitize-coverage=trace-pc) |