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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
parent 8dce7a9a6f
commit 5634bd7d2a
40 changed files with 720 additions and 0 deletions
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32
tools/lib/lockdep/uinclude/linux/kallsyms.h Normal file
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#ifndef _LIBLOCKDEP_LINUX_KALLSYMS_H_
#define _LIBLOCKDEP_LINUX_KALLSYMS_H_
#include <linux/kernel.h>
#include <stdio.h>
#define KSYM_NAME_LEN 128
struct module;
static inline const char *kallsyms_lookup(unsigned long addr,
unsigned long *symbolsize,
unsigned long *offset,
char **modname, char *namebuf)
{
return NULL;
}
#include <execinfo.h>
#include <stdlib.h>
static inline void print_ip_sym(unsigned long ip)
{
char **name;
name = backtrace_symbols((void **)&ip, 1);
printf("%s\n", *name);
free(name);
}
#endif