Commit 2b388c67 authored by Joel Becker's avatar Joel Becker Committed by Mark Fasheh

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: default avatarJoel Becker <joel.becker@oracle.com>
Signed-off-by: default avatarMark Fasheh <mark.fasheh@oracle.com>
parent e7515d06
...@@ -356,6 +356,16 @@ config OCFS2_FS ...@@ -356,6 +356,16 @@ config OCFS2_FS
- POSIX ACLs - POSIX ACLs
- readpages / writepages (not user visible) - readpages / writepages (not user visible)
config OCFS2_DEBUG_MASKLOG
bool "OCFS2 logging support"
depends on OCFS2_FS
default y
help
The ocfs2 filesystem has an extensive logging system. The system
allows selection of events to log via files in /sys/o2cb/logmask/.
This option will enlarge your kernel, but it allows debugging of
ocfs2 filesystem issues.
config MINIX_FS config MINIX_FS
tristate "Minix fs support" tristate "Minix fs support"
help help
......
...@@ -123,6 +123,17 @@ ...@@ -123,6 +123,17 @@
#define MLOG_MASK_PREFIX 0 #define MLOG_MASK_PREFIX 0
#endif #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 #define MLOG_MAX_BITS 64
struct mlog_bits { struct mlog_bits {
...@@ -187,7 +198,8 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits; ...@@ -187,7 +198,8 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
#define mlog(mask, fmt, args...) do { \ #define mlog(mask, fmt, args...) do { \
u64 __m = MLOG_MASK_PREFIX | (mask); \ 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)) { \ !__mlog_test_u64(__m, mlog_not_bits)) { \
if (__m & ML_ERROR) \ if (__m & ML_ERROR) \
__mlog_printk(KERN_ERR, "ERROR: "fmt , ##args); \ __mlog_printk(KERN_ERR, "ERROR: "fmt , ##args); \
...@@ -204,6 +216,7 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits; ...@@ -204,6 +216,7 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
mlog(ML_ERROR, "status = %lld\n", (long long)_st); \ mlog(ML_ERROR, "status = %lld\n", (long long)_st); \
} while (0) } while (0)
#if defined(CONFIG_OCFS2_DEBUG_MASKLOG)
#define mlog_entry(fmt, args...) do { \ #define mlog_entry(fmt, args...) do { \
mlog(ML_ENTRY, "ENTRY:" fmt , ##args); \ mlog(ML_ENTRY, "ENTRY:" fmt , ##args); \
} while (0) } while (0)
...@@ -247,6 +260,13 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits; ...@@ -247,6 +260,13 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
#define mlog_exit_void() do { \ #define mlog_exit_void() do { \
mlog(ML_EXIT, "EXIT\n"); \ mlog(ML_EXIT, "EXIT\n"); \
} while (0) } 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 { \ #define mlog_bug_on_msg(cond, fmt, args...) do { \
if (cond) { \ if (cond) { \
......
...@@ -213,11 +213,9 @@ int ocfs2_find_files_on_disk(const char *name, ...@@ -213,11 +213,9 @@ int ocfs2_find_files_on_disk(const char *name,
struct ocfs2_dir_entry **dirent) struct ocfs2_dir_entry **dirent)
{ {
int status = -ENOENT; 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", mlog_entry("(name=%.*s, blkno=%p, inode=%p, dirent_bh=%p, dirent=%p)\n",
osb, (unsigned long long)OCFS2_I(inode)->ip_blkno, namelen, name, blkno, inode, dirent_bh, dirent);
namelen, name, blkno, inode);
*dirent_bh = ocfs2_find_entry(name, namelen, inode, dirent); *dirent_bh = ocfs2_find_entry(name, namelen, inode, dirent);
if (!*dirent_bh || !*dirent) { if (!*dirent_bh || !*dirent) {
......
...@@ -46,12 +46,12 @@ static struct page *ocfs2_nopage(struct vm_area_struct * area, ...@@ -46,12 +46,12 @@ static struct page *ocfs2_nopage(struct vm_area_struct * area,
unsigned long address, unsigned long address,
int *type) int *type)
{ {
struct inode *inode = area->vm_file->f_dentry->d_inode;
struct page *page = NOPAGE_SIGBUS; struct page *page = NOPAGE_SIGBUS;
sigset_t blocked, oldset; sigset_t blocked, oldset;
int ret; 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 /* The best way to deal with signals in this path is
* to block them upfront, rather than allowing the * to block them upfront, rather than allowing the
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment