linux-kernel - [PATCH v3 0/5] lockdep: Change IRQ state tracking to use per-cpu variables

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Date:   Fri, 29 May 2020 23:35:50 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     mingo@...nel.org, will@...nel.org, tglx@...utronix.de
Cc:     x86@...nel.org, linux-kernel@...r.kernel.org,
        a.darwish@...utronix.de, rostedt@...dmis.org,
        bigeasy@...utronix.de, peterz@...radead.org, davem@...emloft.net,
        sparclinux@...r.kernel.org, mpe@...erman.id.au,
        linuxppc-dev@...ts.ozlabs.org, heiko.carstens@...ibm.com,
        linux-s390@...r.kernel.org
Subject: [PATCH v3 0/5] lockdep: Change IRQ state tracking to use per-cpu variables

Ahmed and Sebastian wanted additional lockdep_assert*() macros and ran
into header hell.

Move the IRQ state into per-cpu variables, which removes the dependency on
task_struct, which is what generated the header-hell.

These patches are intended to go on top of:

 https://lkml.kernel.org/r/20200529212728.795169701@infradead.org

but should apply on current tip/master without much difficulty.

There are a few build fixes for Sparc64, PowerPC64 and s390. Especially the
Sparc one I'm not sure about.