[PATCH v2 3/3] kcsan: Cleanup of main KCSAN Kconfig option

From: Marco Elver
Date: Tue Feb 04 2020 - 12:21:43 EST


This patch cleans up the rules of the 'KCSAN' Kconfig option by:
1. implicitly selecting 'STACKTRACE' instead of depending on it;
2. depending on DEBUG_KERNEL, to avoid accidentally turning KCSAN on if
the kernel is not meant to be a debug kernel;
3. updating the short and long summaries.

Signed-off-by: Marco Elver <elver@xxxxxxxxxx>
---
lib/Kconfig.kcsan | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan
index 020ac63e43617..9785bbf9a1d11 100644
--- a/lib/Kconfig.kcsan
+++ b/lib/Kconfig.kcsan
@@ -4,12 +4,15 @@ config HAVE_ARCH_KCSAN
bool

menuconfig KCSAN
- bool "KCSAN: watchpoint-based dynamic data race detector"
- depends on HAVE_ARCH_KCSAN && !KASAN && STACKTRACE
+ bool "KCSAN: dynamic data race detector"
+ depends on HAVE_ARCH_KCSAN && DEBUG_KERNEL && !KASAN
+ select STACKTRACE
help
- Kernel Concurrency Sanitizer is a dynamic data race detector, which
- uses a watchpoint-based sampling approach to detect races. See
- <file:Documentation/dev-tools/kcsan.rst> for more details.
+ The Kernel Concurrency Sanitizer (KCSAN) is a dynamic data race
+ detector, which relies on compile-time instrumentation, and uses a
+ watchpoint-based sampling approach to detect data races.
+
+ See <file:Documentation/dev-tools/kcsan.rst> for more details.

if KCSAN

--
2.25.0.341.g760bfbb309-goog