[tip: locking/kcsan] objtool, kcsan: Add kcsan_disable_current() and kcsan_enable_current_nowarn()

["tip-bot2 for Marco Elver" <tip-bot2@linutronix.de>]

The following commit has been merged into the locking/kcsan branch of tip:

Commit-ID:     50a19ad4b1ec531eb550183cb5d4ab9f25a56bf8
Gitweb:        https://git.kernel.org/tip/50a19ad4b1ec531eb550183cb5d4ab9f25a56bf8
Author:        Marco Elver <elver@google.com>
AuthorDate:    Fri, 24 Apr 2020 17:47:30 +02:00
Committer:     Paul E. McKenney <paulmck@kernel.org>
CommitterDate: Wed, 06 May 2020 13:47:06 -07:00

objtool, kcsan: Add kcsan_disable_current() and kcsan_enable_current_nowarn()

Both are safe to be called from uaccess contexts.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
---
 tools/objtool/check.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index b6a573d..9122c20 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -472,6 +472,8 @@ static const char *uaccess_safe_builtin[] = {
 	"kcsan_found_watchpoint",
 	"kcsan_setup_watchpoint",
 	"kcsan_check_scoped_accesses",
+	"kcsan_disable_current",
+	"kcsan_enable_current_nowarn",
 	/* KCSAN/TSAN */
 	"__tsan_func_entry",
 	"__tsan_func_exit",