From: Junjiro Okajima <hooanon05@xxxxxxxxxxx>
initial commit
aufs debug print functions, header
Signed-off-by: Junjiro Okajima <hooanon05@xxxxxxxxxxx>
---
fs/aufs/debug.h | 210 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 210 insertions(+), 0 deletions(-)
diff --git a/fs/aufs/debug.h b/fs/aufs/debug.h
new file mode 100644
index 0000000..5e723a0
--- /dev/null
+++ b/fs/aufs/debug.h
@@ -0,0 +1,210 @@
+/*
+ * Copyright (C) 2005-2008 Junjiro Okajima
+ *
+ * This program, aufs is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * debug print functions
+ *
+ * $Id: debug.h,v 1.2 2008/04/21 02:00:37 sfjro Exp $
+ */
+
+#ifndef __AUFS_DEBUG_H__
+#define __AUFS_DEBUG_H__
+
+#ifdef __KERNEL__
+
+#include <linux/fs.h>
+
+/* to debug easier, do not make it an inlined function */
+#define MtxMustLock(mtx) AuDebugOn(!mutex_is_locked(mtx))
+
+#ifdef CONFIG_AUFS_DEBUG
+/* sparse warns about pointer */
+#define AuDebugOn(a) BUG_ON(!!(a))
+extern atomic_t au_cond;
+#define au_debug_on() atomic_inc_return(&au_cond)
+#define au_debug_off() atomic_dec_return(&au_cond)
+static inline int au_debug_test(void)
+{
+ return atomic_read(&au_cond);
+}
+#else
+#define AuDebugOn(a) do {} while (0)
+#define au_debug_on() do {} while (0)
+#define au_debug_off() do {} while (0)
+static inline int au_debug_test(void)
+{
+ return 0;
+}
+#endif /* CONFIG_AUFS_DEBUG */
+
+/* ---------------------------------------------------------------------- */
+
+/* debug print */
+#if defined(CONFIG_LKTR) || defined(CONFIG_LKTR_MODULE)
+#include <linux/lktr.h>
+#ifdef CONFIG_AUFS_DEBUG
+#undef LktrCond
+#define LktrCond unlikely(au_debug_test() || (lktr_cond && lktr_cond()))
+#endif
+#else
+#define LktrCond au_debug_test()
+#define LKTRDumpVma(pre, vma, suf) do {} while (0)
+#define LKTRDumpStack() do {} while (0)
+#define LKTRTrace(fmt, args...) do { \
+ if (LktrCond) \
+ AuDbg(fmt, ##args); \
+} while (0)
+#define LKTRLabel(label) LKTRTrace("%s\n", #label)
+#endif /* CONFIG_LKTR */
+
+#define AuTraceErr(e) do { \
+ if (unlikely((e) < 0)) \
+ LKTRTrace("err %d\n", (int)(e)); \
+} while (0)
+
+#define AuTraceErrPtr(p) do { \
+ if (IS_ERR(p)) \
+ LKTRTrace("err %ld\n", PTR_ERR(p)); \
+} while (0)
+
+#define AuTraceEnter() LKTRLabel(enter)
+
+/* dirty macros for debug print, use with "%.*s" and caution */
+#define AuLNPair(qstr) (qstr)->len, (qstr)->name
+#define AuDLNPair(d) AuLNPair(&(d)->d_name)
+
+/* ---------------------------------------------------------------------- */
+
+#define AuDpri(lvl, fmt, arg...) \
+ printk(lvl AUFS_NAME " %s:%d:%s[%d]: " fmt, \
+ __func__, __LINE__, current->comm, current->pid, ##arg)
+#define AuDbg(fmt, arg...) AuDpri(KERN_DEBUG, fmt, ##arg)
+#define AuInfo(fmt, arg...) AuDpri(KERN_INFO, fmt, ##arg)
+#define AuWarn(fmt, arg...) AuDpri(KERN_WARNING, fmt, ##arg)
+#define AuErr(fmt, arg...) AuDpri(KERN_ERR, fmt, ##arg)
+#define AuIOErr(fmt, arg...) AuErr("I/O Error, " fmt, ##arg)
+#define AuIOErrWhck(fmt, arg...) AuErr("I/O Error, try whck. " fmt, ##arg)
+#define AuWarn1(fmt, arg...) do { \
+ static unsigned char _c; \
+ if (!_c++) AuWarn(fmt, ##arg); \
+} while (0)
+
+#define AuErr1(fmt, arg...) do { \
+ static unsigned char _c; \
+ if (!_c++) AuErr(fmt, ##arg); \
+} while (0)
+
+#define AuIOErr1(fmt, arg...) do { \
+ static unsigned char _c; \
+ if (!_c++) AuIOErr(fmt, ##arg); \
+} while (0)
+
+#define AuUnsupportMsg "This operation is not supported." \
+ " Please report this application to aufs-users ML."
+#define AuUnsupport(fmt, args...) do { \
+ AuErr(AuUnsupportMsg "\n" fmt, ##args); \
+ dump_stack(); \
+} while (0)
+
+/* ---------------------------------------------------------------------- */
+
+struct au_sbinfo;
+#ifdef CONFIG_AUFS_DEBUG
+extern char *au_plevel;
+struct au_nhash;
+void au_dpri_whlist(struct au_nhash *whlist);
+struct au_vdir;
+void au_dpri_vdir(struct au_vdir *vdir);
+void au_dpri_inode(struct inode *inode);
+void au_dpri_dentry(struct dentry *dentry);
+void au_dpri_file(struct file *filp);
+void au_dpri_sb(struct super_block *sb);
+void au_dbg_sleep(int sec);
+int __init au_debug_init(void);
+void au_debug_sbinfo_init(struct au_sbinfo *sbinfo);
+#define AuDbgWhlist(w) do { \
+ LKTRTrace(#w "\n"); \
+ au_dpri_whlist(w); \
+} while (0)
+
+#define AuDbgVdir(v) do { \
+ LKTRTrace(#v "\n"); \
+ au_dpri_vdir(v); \
+} while (0)
+
+#define AuDbgInode(i) do { \
+ LKTRTrace(#i "\n"); \
+ au_dpri_inode(i); \
+} while (0)
+
+#define AuDbgDentry(d) do { \
+ LKTRTrace(#d "\n"); \
+ au_dpri_dentry(d); \
+} while (0)
+
+#define AuDbgFile(f) do { \
+ LKTRTrace(#f "\n"); \
+ au_dpri_file(f); \
+} while (0)
+
+#define AuDbgSb(sb) do { \
+ LKTRTrace(#sb "\n"); \
+ au_dpri_sb(sb); \
+} while (0)
+
+#define AuDbgSleep(sec) do { \
+ AuDbg("sleep %d sec\n", sec); \
+ au_dbg_sleep(sec); \
+} while (0)
+#else
+static inline int au_debug_init(void)
+{
+ return 0;
+}
+static inline void au_debug_sbinfo_init(struct au_sbinfo *sbinfo)
+{
+ /* empty */
+}
+#define AuDbgWhlist(w) do {} while (0)
+#define AuDbgVdir(v) do {} while (0)
+#define AuDbgInode(i) do {} while (0)
+#define AuDbgDentry(d) do {} while (0)
+#define AuDbgFile(f) do {} while (0)
+#define AuDbgSb(sb) do {} while (0)
+#define AuDbgSleep(sec) do {} while (0)
+#endif /* CONFIG_AUFS_DEBUG */
+
+#ifdef DbgUdbaRace
+#define AuDbgSleep_UdbaRace() AuDbgSleep(DbgUdbaRace)
+#else
+#define AuDbgSleep_UdbaRace() do {} while (0)
+#endif
+
+#ifdef CONFIG_AUFS_MAGIC_SYSRQ
+int __init au_sysrq_init(void);
+void au_sysrq_fin(void);
+#else
+static inline int au_sysrq_init(void)
+{
+ return 0;
+}
+#define au_sysrq_fin() do {} while (0)
+#endif
+
+#endif /* __KERNEL__ */
+#endif /* __AUFS_DEBUG_H__ */
--
1.4.4.4
--
To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
