[tip: locking/urgent] include/linux/local_lock_internal.h: Make this header file again compatible with sparse

[tip-bot2 for Bart Van Assche]

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

Commit-ID:     14de1552a4e3fece78bb20314887e70888c9d448
Gitweb:        https://git.kernel.org/tip/14de1552a4e3fece78bb20314887e70888c9d448
Author:        Bart Van Assche <bvanassche@xxxxxxx>
AuthorDate:    Wed, 11 Mar 2026 16:14:55 -07:00
Committer:     Peter Zijlstra <peterz@xxxxxxxxxxxxx>
CommitterDate: Thu, 12 Mar 2026 11:29:11 +01:00

include/linux/local_lock_internal.h: Make this header file again compatible with sparse

There are two versions of the __this_cpu_local_lock() definitions in
include/linux/local_lock_internal.h: one version that relies on the
Clang overloading functionality and another version that does not.
Select the latter version when using sparse. This patch fixes the
following errors reported by sparse:

   include/linux/local_lock_internal.h:331:40: sparse: sparse: multiple definitions for function '__this_cpu_local_lock'
   include/linux/local_lock_internal.h:325:37: sparse:  the previous one is here

Closes: https://lore.kernel.org/oe-kbuild-all/202603062334.wgI5htP0-lkp@xxxxxxxxx/
Fixes: d3febf16dee2 ("locking/local_lock: Support Clang's context analysis")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
Signed-off-by: Peter Zijlstra (Intel) <peterz@xxxxxxxxxxxxx>
Reviewed-by: Marco Elver <elver@xxxxxxxxxx>
Link: https://patch.msgid.link/20260311231455.1961413-1-bvanassche@xxxxxxx
---
 include/linux/local_lock_internal.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/local_lock_internal.h b/include/linux/local_lock_internal.h
index eff711b..234be7f 100644
--- a/include/linux/local_lock_internal.h
+++ b/include/linux/local_lock_internal.h
@@ -315,7 +315,7 @@ do {								\
 
 #endif /* CONFIG_PREEMPT_RT */
 
-#if defined(WARN_CONTEXT_ANALYSIS)
+#if defined(WARN_CONTEXT_ANALYSIS) && !defined(__CHECKER__)
 /*
  * Because the compiler only knows about the base per-CPU variable, use this
  * helper function to make the compiler think we lock/unlock the @base variable,