LU-1408 debug: initialize debug_msg_data if needed

[fs/lustre-release.git] / libcfs / include / libcfs / linux / libcfs.h

diff --git a/libcfs/include/libcfs/linux/libcfs.h b/libcfs/include/libcfs/linux/libcfs.h
index e1a0502..a6c8edd 100644 (file)
--- a/libcfs/include/libcfs/linux/libcfs.h
+++ b/libcfs/include/libcfs/linux/libcfs.h
@@ -1,6 +1,4 @@
-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
  * GPL HEADER START
  *
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
@@ -26,7 +24,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -47,12 +45,15 @@
 
 
 #include <stdarg.h>
+#include <libcfs/linux/linux-cpu.h>
 #include <libcfs/linux/linux-time.h>
 #include <libcfs/linux/linux-mem.h>
 #include <libcfs/linux/linux-prim.h>
 #include <libcfs/linux/linux-lock.h>
 #include <libcfs/linux/linux-fs.h>
 #include <libcfs/linux/linux-tcpip.h>
+#include <libcfs/linux/linux-bitops.h>
+#include <libcfs/linux/linux-types.h>
 #include <libcfs/linux/kp30.h>
 
 #ifdef HAVE_ASM_TYPES_H
@@ -62,6 +63,7 @@
 #include <asm/timex.h>
 #include <linux/sched.h> /* THREAD_SIZE */
 
+#define CFS_THREAD_SIZE   THREAD_SIZE
 #define LUSTRE_TRACE_SIZE (THREAD_SIZE >> 5)
 
 #if !defined(__x86_64__)
@@ -75,21 +77,23 @@
                            (THREAD_SIZE - 1)))
 # endif /* __ia64__ */
 
-#define __CHECK_STACK(file, func, line)                                 \
+#define __CHECK_STACK(msgdata, mask, cdls)                              \
 do {                                                                    \
-        unsigned long _stack = CDEBUG_STACK();                           \
-                                                                        \
-        if (_stack > 3*THREAD_SIZE/4 && _stack > libcfs_stack) {        \
-                libcfs_stack = _stack;                                  \
-                libcfs_debug_msg(NULL, DEBUG_SUBSYSTEM, D_WARNING,      \
-                                 file, func, line,                      \
-                                 "maximum lustre stack %lu\n", _stack); \
+        if (unlikely(CDEBUG_STACK() > libcfs_stack)) {                  \
+                LIBCFS_DEBUG_MSG_DATA_INIT(msgdata, D_WARNING, NULL);   \
+                libcfs_stack = CDEBUG_STACK();                          \
+                libcfs_debug_msg(msgdata,                               \
+                                 "maximum lustre stack %lu\n",          \
+                                 CDEBUG_STACK());                       \
+                (msgdata)->msg_mask = mask;                             \
+                (msgdata)->msg_cdls = cdls;                             \
+                dump_stack();                                           \
               /*panic("LBUG");*/                                        \
         }                                                               \
 } while (0)
-#define CHECK_STACK()     __CHECK_STACK(__FILE__, __func__, __LINE__)
+#define CFS_CHECK_STACK(msgdata, mask, cdls)  __CHECK_STACK(msgdata, mask, cdls)
 #else /* __x86_64__ */
-#define CHECK_STACK() do { } while(0)
+#define CFS_CHECK_STACK(msgdata, mask, cdls) do {} while(0)
 #define CDEBUG_STACK() (0L)
 #endif /* __x86_64__ */
 
@@ -125,4 +129,38 @@ typedef long long_ptr_t;
 #define WITH_WATCHDOG
 #endif
 
+#ifndef HAVE_STRUCT_CRED
+
+#define current_cred() (current)
+
+#define current_cred_xxx(xxx)                   \
+({                                              \
+        current->xxx;                     \
+})
+
+#ifndef HAVE_CRED_WRAPPERS
+
+#define current_uid()           (current_cred_xxx(uid))
+#define current_gid()           (current_cred_xxx(gid))
+#define current_euid()          (current_cred_xxx(euid))
+#define current_egid()          (current_cred_xxx(egid))
+#define current_suid()          (current_cred_xxx(suid))
+#define current_sgid()          (current_cred_xxx(sgid))
+#define current_fsuid()         (current_cred_xxx(fsuid))
+#define current_fsgid()         (current_cred_xxx(fsgid))
+#define current_cap()           (current_cred_xxx(cap_effective))
+
+#endif /* HAVE_LINUX_CRED_H */
+
+#define current_user()          (current_cred_xxx(user))
+#define current_user_ns()       (current_cred_xxx(user)->user_ns)
+#define current_security()      (current_cred_xxx(security))
+
+#define cred task_struct
+
+#define prepare_creds() (current)
+#define commit_creds(a)
+
+#endif /* HAVE_STRUCT_CRED */
+
 #endif /* _LINUX_LIBCFS_H */