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| author | Latchesar Ionkov <lucho@ionkov.net> | 2006-01-08 01:05:00 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-08 20:14:06 -0800 |
| commit | 531b1094b74365dcc55fa464d28a9a2497ae825d (patch) | |
| tree | a0384dabe3be1c844166d028b3ef7c21c3dfe5fc /fs/9p/debug.h | |
| parent | d8da097afb765654c866062148fd98b11db9003e (diff) | |
| download | linux-3.10-531b1094b74365dcc55fa464d28a9a2497ae825d.tar.gz linux-3.10-531b1094b74365dcc55fa464d28a9a2497ae825d.tar.bz2 linux-3.10-531b1094b74365dcc55fa464d28a9a2497ae825d.zip | |
[PATCH] v9fs: zero copy implementation
Performance enhancement reducing the number of copies in the data and
stat paths.
Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/9p/debug.h')
| -rw-r--r-- | fs/9p/debug.h | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/fs/9p/debug.h b/fs/9p/debug.h index 4445f06919d..fe551032788 100644 --- a/fs/9p/debug.h +++ b/fs/9p/debug.h @@ -51,16 +51,23 @@ do { \ #if DEBUG_DUMP_PKT static inline void dump_data(const unsigned char *data, unsigned int datalen) { - int i, j; - int len = datalen; + int i, n; + char buf[5*8]; - printk(KERN_DEBUG "data "); - for (i = 0; i < len; i += 4) { - for (j = 0; (j < 4) && (i + j < len); j++) - printk(KERN_DEBUG "%02x", data[i + j]); - printk(KERN_DEBUG " "); + n = 0; + i = 0; + while (i < datalen) { + n += snprintf(buf+n, sizeof(buf)-n, "%02x", data[i++]); + if (i%4 == 0) + n += snprintf(buf+n, sizeof(buf)-n, " "); + + if (i%16 == 0) { + dprintk(DEBUG_ERROR, "%s\n", buf); + n = 0; + } } - printk(KERN_DEBUG "\n"); + + dprintk(DEBUG_ERROR, "%s\n", buf); } #else /* DEBUG_DUMP_PKT */ static inline void dump_data(const unsigned char *data, unsigned int datalen) |