[Bug 282479] LinuxKPI: <linux/lockdep.h> lockdep_is_held() user doesn't build after LLVM 19 import

In reply to: bugzilla-noreply_a_freebsd.org: "[Bug 282479] LinuxKPI: <linux/lockdep.h> lockdep_is_held() user doesn't build after LLVM 19 import"
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From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 02 Nov 2024 00:02:16 UTC

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282479

Bjoern A. Zeeb <bz@FreeBSD.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|Open                        |In Progress
            Version|Unspecified                 |CURRENT
           Assignee|bugs@FreeBSD.org            |bz@FreeBSD.org

--- Comment #5 from Bjoern A. Zeeb <bz@FreeBSD.org> ---
(In reply to Evgenii Khramtsov from comment #4)

I would highly assume that this has nothing to do with the clang19 import but
is a simple #include problem which only surfaces in 5.10.

I think the fix likely (which we should probably do anyway) is to
#include <sys/systm.h> in sys/compat/linuxkpi/common/include/linux/lockdep.h .

I am running a tinderbox build with drm-kmod checked out in LOCAL_MODULES_DIR
using the 5.10-lts branch to see if it breaks and if the above fixes it.  That
way drm-kmod is built along with the kernel and the same build and kernel
options.

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