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Char: cyclades, remove bottom half processing

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The work done in bottom half doesn't cost much cpu time (e.g.  tty_hangup
itself schedules its own bottom half), it's possible to do the work in isr
directly and save hence some .text.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Paul Fulghum <paulkf@microgate.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jiri Slaby 2007-10-18 03:06:20 -07:00 • committed by Linus Torvalds
commit ebafeeff0f
2 changed files with 20 additions and 106 deletions
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15
include/linux/cyclades.h
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@ -569,7 +569,6 @@ struct cyclades_port {
int x_char; /* to be pushed out ASAP */
int close_delay;
unsigned short closing_wait;
unsigned long event;
int count; /* # of fd on device */
int breakon;
int breakoff;
@ -584,7 +583,6 @@ struct cyclades_port {
struct cyclades_monitor mon;
struct cyclades_idle_stats idle_stats;
struct cyclades_icount icount;
struct work_struct tqueue;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
struct completion shutdown_wait;
@ -592,19 +590,6 @@ struct cyclades_port {
int throttle;
};
/*
* Events are used to schedule things to happen at timer-interrupt
* time, instead of at cy interrupt time.
*/
#define Cy_EVENT_READ_PROCESS 0
#define Cy_EVENT_WRITE_WAKEUP 1
#define Cy_EVENT_HANGUP 2
#define Cy_EVENT_BREAK 3
#define Cy_EVENT_OPEN_WAKEUP 4
#define Cy_EVENT_SHUTDOWN_WAKEUP 5
#define Cy_EVENT_DELTA_WAKEUP 6
#define Cy_EVENT_Z_RX_FULL 7
#define CLOSING_WAIT_DELAY 30*HZ
#define CY_CLOSING_WAIT_NONE 65535
#define CY_CLOSING_WAIT_INF 0