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| author | Alexey Dobriyan <adobriyan@gmail.com> | 2007-02-10 01:46:45 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-02-11 11:18:07 -0800 |
| commit | 4b98d11b40f03382918796f3c5c936d5495d20a4 (patch) | |
| tree | 616b7260196c9bd0eaf208ef8fab91fcf9efcece /fs/proc | |
| parent | 18f705f49a5b19206233f7cef8f869ce7291f8c8 (diff) | |
| download | linux-3.10-4b98d11b40f03382918796f3c5c936d5495d20a4.tar.gz linux-3.10-4b98d11b40f03382918796f3c5c936d5495d20a4.tar.bz2 linux-3.10-4b98d11b40f03382918796f3c5c936d5495d20a4.zip | |
[PATCH] ifdef ->rchar, ->wchar, ->syscr, ->syscw from task_struct
They are fat: 4x8 bytes in task_struct.
They are uncoditionally updated in every fork, read, write and sendfile.
They are used only if you have some "extended acct fields feature".
And please, please, please, read(2) knows about bytes, not characters,
why it is called "rchar"?
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Jay Lan <jlan@engr.sgi.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/proc')
| -rw-r--r-- | fs/proc/base.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 1a979ea3b37..7fb37d6f286 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1810,17 +1810,21 @@ static int proc_base_fill_cache(struct file *filp, void *dirent, filldir_t filld static int proc_pid_io_accounting(struct task_struct *task, char *buffer) { return sprintf(buffer, +#ifdef CONFIG_TASK_XACCT "rchar: %llu\n" "wchar: %llu\n" "syscr: %llu\n" "syscw: %llu\n" +#endif "read_bytes: %llu\n" "write_bytes: %llu\n" "cancelled_write_bytes: %llu\n", +#ifdef CONFIG_TASK_XACCT (unsigned long long)task->rchar, (unsigned long long)task->wchar, (unsigned long long)task->syscr, (unsigned long long)task->syscw, +#endif (unsigned long long)task->ioac.read_bytes, (unsigned long long)task->ioac.write_bytes, (unsigned long long)task->ioac.cancelled_write_bytes); |