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| author | Marco Elver <elver@google.com> | 2020-02-22 00:10:27 +0100 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2020-03-25 09:56:00 -0700 |
| commit | 2402d0eae589a31ee7b1774cb220d84d0f5605b4 (patch) | |
| tree | bf69f5b12d2766636aa47e4b88a167291a46da47 /lib/Kconfig.kcsan | |
| parent | 48b1fc190a180d971fb69217c88c7247f4f2ca19 (diff) | |
| download | lwn-2402d0eae589a31ee7b1774cb220d84d0f5605b4.tar.gz lwn-2402d0eae589a31ee7b1774cb220d84d0f5605b4.zip | |
kcsan: Add option for verbose reporting
Adds CONFIG_KCSAN_VERBOSE to optionally enable more verbose reports.
Currently information about the reporting task's held locks and IRQ
trace events are shown, if they are enabled.
Signed-off-by: Marco Elver <elver@google.com>
Suggested-by: Qian Cai <cai@lca.pw>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'lib/Kconfig.kcsan')
| -rw-r--r-- | lib/Kconfig.kcsan | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/lib/Kconfig.kcsan b/lib/Kconfig.kcsan index 081ed2e1bf7b..0f1447ff8f55 100644 --- a/lib/Kconfig.kcsan +++ b/lib/Kconfig.kcsan @@ -20,6 +20,19 @@ menuconfig KCSAN if KCSAN +config KCSAN_VERBOSE + bool "Show verbose reports with more information about system state" + depends on PROVE_LOCKING + help + If enabled, reports show more information about the system state that + may help better analyze and debug races. This includes held locks and + IRQ trace events. + + While this option should generally be benign, we call into more + external functions on report generation; if a race report is + generated from any one of them, system stability may suffer due to + deadlocks or recursion. If in doubt, say N. + config KCSAN_DEBUG bool "Debugging of KCSAN internals" |