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Improve KCSAN documentation a bit

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This commit simplifies and clarifies the highest level KCSAN Kconfig
help text.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Ingo Molnar 2020-04-13 11:03:05 +02:00 committed by Paul E. McKenney
parent cdb9b07d8c
commit eba9c444d3
1 changed files with 8 additions and 7 deletions
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15
lib/Kconfig.kcsan
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@ -4,17 +4,18 @@ config HAVE_ARCH_KCSAN
bool
menuconfig KCSAN
bool "KCSAN: dynamic race detector"
bool "KCSAN: dynamic data race detector"
depends on HAVE_ARCH_KCSAN && DEBUG_KERNEL && !KASAN
select STACKTRACE
help
The Kernel Concurrency Sanitizer (KCSAN) is a dynamic race detector,
which relies on compile-time instrumentation, and uses a
watchpoint-based sampling approach to detect races.
The Kernel Concurrency Sanitizer (KCSAN) is a dynamic
data-race detector that relies on compile-time instrumentation.
KCSAN uses a watchpoint-based sampling approach to detect races.
KCSAN's primary purpose is to detect data races. KCSAN can also be
used to check properties, with the help of provided assertions, of
concurrent code where bugs do not manifest as data races.
While KCSAN's primary purpose is to detect data races, it
also provides assertions to check data access constraints.
These assertions can expose bugs that do not manifest as
data races.
See <file:Documentation/dev-tools/kcsan.rst> for more details.