From 5634bd7d2ab14fbf736b62b0788fb68e2cb0fde2 Mon Sep 17 00:00:00 2001 From: Sasha Levin Date: Thu, 13 Jun 2013 18:41:17 -0400 Subject: liblockdep: Wrap kernel/locking/lockdep.c to allow usage from userspace 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 Signed-off-by: Peter Zijlstra 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 --- tools/lib/lockdep/uinclude/linux/kernel.h | 44 +++++++++++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 tools/lib/lockdep/uinclude/linux/kernel.h (limited to 'tools/lib/lockdep/uinclude/linux/kernel.h') diff --git a/tools/lib/lockdep/uinclude/linux/kernel.h b/tools/lib/lockdep/uinclude/linux/kernel.h new file mode 100644 index 000000000000..a11e3c357be7 --- /dev/null +++ b/tools/lib/lockdep/uinclude/linux/kernel.h @@ -0,0 +1,44 @@ +#ifndef _LIBLOCKDEP_LINUX_KERNEL_H_ +#define _LIBLOCKDEP_LINUX_KERNEL_H_ + +#include +#include +#include +#include +#include + +#ifndef container_of +#define container_of(ptr, type, member) ({ \ + const typeof(((type *)0)->member) * __mptr = (ptr); \ + (type *)((char *)__mptr - offsetof(type, member)); }) +#endif + +#define max(x, y) ({ \ + typeof(x) _max1 = (x); \ + typeof(y) _max2 = (y); \ + (void) (&_max1 == &_max2); \ + _max1 > _max2 ? _max1 : _max2; }) + +#define BUILD_BUG_ON(condition) ((void)sizeof(char[1 - 2*!!(condition)])) +#define WARN_ON(x) (x) +#define WARN_ON_ONCE(x) (x) +#define likely(x) (x) +#define WARN(x, y, z) (x) +#define uninitialized_var(x) x +#define __init +#define noinline +#define list_add_tail_rcu list_add_tail + +#ifndef CALLER_ADDR0 +#define CALLER_ADDR0 ((unsigned long)__builtin_return_address(0)) +#endif + +#ifndef _RET_IP_ +#define _RET_IP_ CALLER_ADDR0 +#endif + +#ifndef _THIS_IP_ +#define _THIS_IP_ ({ __label__ __here; __here: (unsigned long)&&__here; }) +#endif + +#endif -- cgit v1.2.3