diff options
| author | ed <ed@FreeBSD.org> | 2010-02-07 15:42:15 +0000 |
|---|---|---|
| committer | ed <ed@FreeBSD.org> | 2010-02-07 15:42:15 +0000 |
| commit | 760cf1fda368db2d149f89b1f413f19386474fb0 (patch) | |
| tree | 23c8914435e12a6a0a31bc1ac8379c94f6d73ad8 /sys/kern/tty_outq.c | |
| parent | f834d13a707ba2387db122f54d3ffb49e8a68eda (diff) | |
| download | FreeBSD-src-760cf1fda368db2d149f89b1f413f19386474fb0.zip FreeBSD-src-760cf1fda368db2d149f89b1f413f19386474fb0.tar.gz | |
Remove statistics from the TTY queues.
I added counters to see how often fast copying to userspace was actually
performed, which was only useful during development. Remove these
statistics now we know it to be effective.
Diffstat (limited to 'sys/kern/tty_outq.c')
| -rw-r--r-- | sys/kern/tty_outq.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/sys/kern/tty_outq.c b/sys/kern/tty_outq.c index f429a92..d5ed221 100644 --- a/sys/kern/tty_outq.c +++ b/sys/kern/tty_outq.c @@ -34,7 +34,6 @@ __FBSDID("$FreeBSD$"); #include <sys/kernel.h> #include <sys/lock.h> #include <sys/queue.h> -#include <sys/sysctl.h> #include <sys/systm.h> #include <sys/tty.h> #include <sys/uio.h> @@ -52,14 +51,6 @@ __FBSDID("$FreeBSD$"); * output. */ -/* Statistics. */ -static unsigned long ttyoutq_nfast = 0; -SYSCTL_ULONG(_kern, OID_AUTO, tty_outq_nfast, CTLFLAG_RD, - &ttyoutq_nfast, 0, "Unbuffered reads to userspace on output"); -static unsigned long ttyoutq_nslow = 0; -SYSCTL_ULONG(_kern, OID_AUTO, tty_outq_nslow, CTLFLAG_RD, - &ttyoutq_nslow, 0, "Buffered reads to userspace on output"); - struct ttyoutq_block { struct ttyoutq_block *tob_next; char tob_data[TTYOUTQ_DATASIZE]; @@ -236,8 +227,6 @@ ttyoutq_read_uio(struct ttyoutq *to, struct tty *tp, struct uio *uio) * the write pointer to a new block. */ if (cend == TTYOUTQ_DATASIZE || cend == to->to_end) { - atomic_add_long(&ttyoutq_nfast, 1); - /* * Fast path: zero copy. Remove the first block, * so we can unlock the TTY temporarily. @@ -258,7 +247,6 @@ ttyoutq_read_uio(struct ttyoutq *to, struct tty *tp, struct uio *uio) TTYOUTQ_RECYCLE(to, tob); } else { char ob[TTYOUTQ_DATASIZE - 1]; - atomic_add_long(&ttyoutq_nslow, 1); /* * Slow path: store data in a temporary buffer. |
