ocfs2: Compile-time disabling of ocfs2 debugging output.
Give gcc the chance to compile out the debug logging code in ocfs2.
This saves some size at the expense of being able to debug the code.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index 73edad7..a42628b 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -123,6 +123,17 @@
#define MLOG_MASK_PREFIX 0
#endif
+/*
+ * When logging is disabled, force the bit test to 0 for anything other
+ * than errors and notices, allowing gcc to remove the code completely.
+ * When enabled, allow all masks.
+ */
+#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
+#define ML_ALLOWED_BITS ~0
+#else
+#define ML_ALLOWED_BITS (ML_ERROR|ML_NOTICE)
+#endif
+
#define MLOG_MAX_BITS 64
struct mlog_bits {
@@ -187,7 +198,8 @@
#define mlog(mask, fmt, args...) do { \
u64 __m = MLOG_MASK_PREFIX | (mask); \
- if (__mlog_test_u64(__m, mlog_and_bits) && \
+ if ((__m & ML_ALLOWED_BITS) && \
+ __mlog_test_u64(__m, mlog_and_bits) && \
!__mlog_test_u64(__m, mlog_not_bits)) { \
if (__m & ML_ERROR) \
__mlog_printk(KERN_ERR, "ERROR: "fmt , ##args); \
@@ -204,6 +216,7 @@
mlog(ML_ERROR, "status = %lld\n", (long long)_st); \
} while (0)
+#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
#define mlog_entry(fmt, args...) do { \
mlog(ML_ENTRY, "ENTRY:" fmt , ##args); \
} while (0)
@@ -247,6 +260,13 @@
#define mlog_exit_void() do { \
mlog(ML_EXIT, "EXIT\n"); \
} while (0)
+#else
+#define mlog_entry(...) do { } while (0)
+#define mlog_entry_void(...) do { } while (0)
+#define mlog_exit(...) do { } while (0)
+#define mlog_exit_ptr(...) do { } while (0)
+#define mlog_exit_void(...) do { } while (0)
+#endif /* defined(CONFIG_OCFS2_DEBUG_MASKLOG) */
#define mlog_bug_on_msg(cond, fmt, args...) do { \
if (cond) { \
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index ae47f45..3d494d1 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -213,11 +213,9 @@
struct ocfs2_dir_entry **dirent)
{
int status = -ENOENT;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- mlog_entry("(osb=%p, parent=%llu, name='%.*s', blkno=%p, inode=%p)\n",
- osb, (unsigned long long)OCFS2_I(inode)->ip_blkno,
- namelen, name, blkno, inode);
+ mlog_entry("(name=%.*s, blkno=%p, inode=%p, dirent_bh=%p, dirent=%p)\n",
+ namelen, name, blkno, inode, dirent_bh, dirent);
*dirent_bh = ocfs2_find_entry(name, namelen, inode, dirent);
if (!*dirent_bh || !*dirent) {
diff --git a/fs/ocfs2/mmap.c b/fs/ocfs2/mmap.c
index 843cf9d..83934e3 100644
--- a/fs/ocfs2/mmap.c
+++ b/fs/ocfs2/mmap.c
@@ -46,12 +46,12 @@
unsigned long address,
int *type)
{
- struct inode *inode = area->vm_file->f_dentry->d_inode;
struct page *page = NOPAGE_SIGBUS;
sigset_t blocked, oldset;
int ret;
- mlog_entry("(inode %lu, address %lu)\n", inode->i_ino, address);
+ mlog_entry("(area=%p, address=%lu, type=%p)\n", area, address,
+ type);
/* The best way to deal with signals in this path is
* to block them upfront, rather than allowing the