diff options
| author | Jay Lan <jlan@engr.sgi.com> | 2005-01-04 05:25:25 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-01-04 05:25:25 -0800 |
| commit | 9ca7d6f6cdc862fdebc72c4c15249cbb729a2f0f (patch) | |
| tree | fbc08e019693a73b1192aa2b2ae925980f2c3781 /fs | |
| parent | 6c0993a01c43e614a7865da5c6f10894bff9e9b9 (diff) | |
| download | history-9ca7d6f6cdc862fdebc72c4c15249cbb729a2f0f.tar.gz | |
[PATCH] enhanced I/O accounting data patch
This patch is to offer common accounting data collection method at I/O for
various accounting packages including BSD accounting, ELSA, CSA and any
other acct packages that use a common layer of data collection.
Patch is made to fs/read_write.c to collect per process data on character
read/written in bytes and number of read/write syscalls made.
New struct fields are added to task_struct to store the data.
These data are collected on per process basis.
Signed-off-by: Jay Lan <jlan@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/read_write.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 5103b450ca715a..93f0374678ad96 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -216,8 +216,11 @@ ssize_t vfs_read(struct file *file, char __user *buf, size_t count, loff_t *pos) ret = file->f_op->read(file, buf, count, pos); else ret = do_sync_read(file, buf, count, pos); - if (ret > 0) + if (ret > 0) { dnotify_parent(file->f_dentry, DN_ACCESS); + current->rchar += ret; + } + current->syscr++; } } @@ -260,8 +263,11 @@ ssize_t vfs_write(struct file *file, const char __user *buf, size_t count, loff_ ret = file->f_op->write(file, buf, count, pos); else ret = do_sync_write(file, buf, count, pos); - if (ret > 0) + if (ret > 0) { dnotify_parent(file->f_dentry, DN_MODIFY); + current->wchar += ret; + } + current->syscw++; } } @@ -540,6 +546,9 @@ sys_readv(unsigned long fd, const struct iovec __user *vec, unsigned long vlen) fput_light(file, fput_needed); } + if (ret > 0) + current->rchar += ret; + current->syscr++; return ret; } @@ -558,6 +567,9 @@ sys_writev(unsigned long fd, const struct iovec __user *vec, unsigned long vlen) fput_light(file, fput_needed); } + if (ret > 0) + current->wchar += ret; + current->syscw++; return ret; } @@ -636,6 +648,13 @@ static ssize_t do_sendfile(int out_fd, int in_fd, loff_t *ppos, retval = in_file->f_op->sendfile(in_file, ppos, count, file_send_actor, out_file); + if (retval > 0) { + current->rchar += retval; + current->wchar += retval; + } + current->syscr++; + current->syscw++; + if (*ppos > max) retval = -EOVERFLOW; |