The following commit has been merged into the locking/kcsan branch of tip:
Commit-ID: 8cfbb04fae75260eae07ab8c74c1dcd44294d739
Gitweb: https://git.kernel.org/tip/8cfbb04fae75260eae07ab8c74c1dcd44294d739
Author: Marco Elver <elver@xxxxxxxxxx>
AuthorDate: Tue, 04 Feb 2020 18:21:12 +01:00
Committer: Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Sat, 21 Mar 2020 09:42:26 +01:00
kcsan: Clean up the main KCSAN Kconfig option
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>
Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
lib/Kconfig.kcsan | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan
index 020ac63..9785bbf 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
|