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locking/qspinlock: Do not include atomic.h from qspinlock_types.h

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This patch breaks a header loop involving qspinlock_types.h.
The issue is that qspinlock_types.h includes atomic.h, which then
eventually includes kernel.h which could lead back to the original
file via spinlock_types.h.

As ATOMIC_INIT is now defined by linux/types.h, there is no longer
any need to include atomic.h from qspinlock_types.h.  This also
allows the CONFIG_PARAVIRT hack to be removed since it was trying
to prevent exactly this loop.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/20200729123316.GC7047@gondor.apana.org.au
This commit is contained in:
Herbert Xu 2020-07-29 22:33:16 +10:00 committed by Peter Zijlstra
parent 7ca8cf5347
commit 459e39538e
2 changed files with 1 additions and 8 deletions
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1
include/asm-generic/qspinlock.h
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@ -11,6 +11,7 @@
#define __ASM_GENERIC_QSPINLOCK_H #define __ASM_GENERIC_QSPINLOCK_H
#include <asm-generic/qspinlock_types.h> #include <asm-generic/qspinlock_types.h>
#include <linux/atomic.h>
/** /**
* queued_spin_is_locked - is the spinlock locked? * queued_spin_is_locked - is the spinlock locked?

8
include/asm-generic/qspinlock_types.h
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@ -9,15 +9,7 @@
#ifndef __ASM_GENERIC_QSPINLOCK_TYPES_H #ifndef __ASM_GENERIC_QSPINLOCK_TYPES_H
#define __ASM_GENERIC_QSPINLOCK_TYPES_H #define __ASM_GENERIC_QSPINLOCK_TYPES_H
/*
* Including atomic.h with PARAVIRT on will cause compilation errors because
* of recursive header file incluson via paravirt_types.h. So don't include
* it if PARAVIRT is on.
*/
#ifndef CONFIG_PARAVIRT
#include <linux/types.h> #include <linux/types.h>
#include <linux/atomic.h>
#endif
typedef struct qspinlock { typedef struct qspinlock {
union { union {