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liblockdep: Wrap kernel/locking/lockdep.c to allow usage from userspace

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kernel/locking/lockdep.c deals with validating locking scenarios for
various architectures supported by the kernel. There isn't
anything kernel specific going on in lockdep, and when we
compare userspace to other architectures that don't have to deal
with irqs such as s390, they become all too similar.

We wrap kernel/locking/lockdep.c and include/linux/lockdep.h with
several headers which allow us to build and use lockdep from
userspace. We don't touch the kernel code itself which means
that any work done on lockdep in the kernel will automatically
benefit userspace lockdep as well!

Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: torvalds@linux-foundation.org
Link: http://lkml.kernel.org/r/1371163284-6346-3-git-send-email-sasha.levin@oracle.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Sasha Levin 2013-06-13 18:41:17 -04:00 • committed by Ingo Molnar
commit 5634bd7d2a
40 changed files with 720 additions and 0 deletions
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25
tools/lib/lockdep/uinclude/linux/spinlock.h Normal file
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#ifndef _LIBLOCKDEP_SPINLOCK_H_
#define _LIBLOCKDEP_SPINLOCK_H_
#include <pthread.h>
#include <stdbool.h>
#define arch_spinlock_t pthread_mutex_t
#define __ARCH_SPIN_LOCK_UNLOCKED PTHREAD_MUTEX_INITIALIZER
static inline void arch_spin_lock(arch_spinlock_t *mutex)
{
pthread_mutex_lock(mutex);
}
static inline void arch_spin_unlock(arch_spinlock_t *mutex)
{
pthread_mutex_unlock(mutex);
}
static inline bool arch_spin_is_locked(arch_spinlock_t *mutex)
{
return true;
}
#endif