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| author | Ivo Sieben <meltedpianoman@gmail.com> | 2012-05-03 14:37:43 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-05-10 11:24:03 -0700 |
| commit | 1541f845d123a48fbca3cee32b2963b3fb3da83a (patch) | |
| tree | ace9a1f9278ea84101359d189894c71548193136 /include/linux/tty_ldisc.h | |
| parent | 3e62c413fb0c75c8cfaf086d00a9ecc6b55009d6 (diff) | |
| download | lwn-1541f845d123a48fbca3cee32b2963b3fb3da83a.tar.gz lwn-1541f845d123a48fbca3cee32b2963b3fb3da83a.zip | |
tty: move global ldisc idle waitqueue to the individual ldisc
The global wait_queue that is used for line discipline idle handling is
moved to a separate wait_queue for each line instance. This prevents
unnecessary blocking on one line, because of idle handling on another
line.
Signed-off-by: Ivo Sieben <meltedpianoman@gmail.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/tty_ldisc.h')
| -rw-r--r-- | include/linux/tty_ldisc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/tty_ldisc.h b/include/linux/tty_ldisc.h index ff7dc08696a8..fb79dd8d1537 100644 --- a/include/linux/tty_ldisc.h +++ b/include/linux/tty_ldisc.h @@ -110,6 +110,7 @@ #include <linux/fs.h> #include <linux/wait.h> #include <linux/pps_kernel.h> +#include <linux/wait.h> struct tty_ldisc_ops { int magic; @@ -154,6 +155,7 @@ struct tty_ldisc_ops { struct tty_ldisc { struct tty_ldisc_ops *ops; atomic_t users; + wait_queue_head_t wq_idle; }; #define TTY_LDISC_MAGIC 0x5403 |