linux-kernel - [PATCH v4 3/8] sparc64: Fix asm/percpu.h build error

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Date:   Tue, 23 Jun 2020 10:36:48 +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, linux@...linux.org.uk
Subject: [PATCH v4 3/8] sparc64: Fix asm/percpu.h build error

In order to break a header dependency between lockdep and task_struct,
I need per-cpu stuff from lockdep.

Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
---
 arch/sparc/include/asm/percpu_64.h  |    2 ++
 arch/sparc/include/asm/trap_block.h |    2 ++
 2 files changed, 4 insertions(+)

--- a/arch/sparc/include/asm/percpu_64.h
+++ b/arch/sparc/include/asm/percpu_64.h
@@ -4,7 +4,9 @@
 
 #include <linux/compiler.h>
 
+#ifndef BUILD_VDSO
 register unsigned long __local_per_cpu_offset asm("g5");
+#endif
 
 #ifdef CONFIG_SMP
 
--- a/arch/sparc/include/asm/trap_block.h
+++ b/arch/sparc/include/asm/trap_block.h
@@ -2,6 +2,8 @@
 #ifndef _SPARC_TRAP_BLOCK_H
 #define _SPARC_TRAP_BLOCK_H
 
+#include <linux/threads.h>
+
 #include <asm/hypervisor.h>
 #include <asm/asi.h>