Re: [PATCH] rcu: mark lockdep_assert_rcu_helper() __always_inline

[Peter Zijlstra]

On Mon, Feb 02, 2026 at 10:55:01AM +0100, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> There are some configurations in which lockdep_assert_rcu_helper() ends up
> not being inlined, for some reason. This leads to a link failure because
> now the caller tries to pass a nonexistant __ctx_lock_RCU structure:
> 
> ld: lib/test_context-analysis.o: in function `test_rcu_assert_variants':
> test_context-analysis.c:(.text+0x275c): undefined reference to `RCU'
> ld: test_context-analysis.c:(.text+0x276c): undefined reference to `RCU_BH'
> ld: test_context-analysis.c:(.text+0x2774): undefined reference to `RCU_SCHED'
> 
> I saw this in one out of many 32-bit arm builds using gcc-15.2, but
> it probably happens in others as well.
> 
> Mark this function as __always_inline to fix the build.
> 
> Fixes: fe00f6e84621 ("rcu: Support Clang's context analysis")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

Thanks!