From: Peter Hurley <peter@hurleysoftware.com>
To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jiri Slaby <jslaby@suse.cz>,
linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
Peter Hurley <peter@hurleysoftware.com>
Subject: [PATCH 06/16] tty: Use lockless flip buffer free list
Date: Mon, 15 Apr 2013 11:25:57 -0400 [thread overview]
Message-ID: <1366039567-8620-7-git-send-email-peter@hurleysoftware.com> (raw)
In-Reply-To: <1366039567-8620-1-git-send-email-peter@hurleysoftware.com>
In preparation for lockless flip buffers, make the flip buffer
free list lockless.
NB: using llist is not the optimal solution, as the driver and
buffer work may contend over the llist head unnecessarily. However,
test measurements indicate this contention is low.
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
---
drivers/tty/tty_buffer.c | 29 ++++++++++++-----------------
include/linux/llist.h | 23 +++++++++++++++++++++++
include/linux/tty.h | 8 ++++++--
3 files changed, 41 insertions(+), 19 deletions(-)
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 0259a76..069640e 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -44,16 +44,17 @@ static void tty_buffer_reset(struct tty_buffer *p, size_t size)
void tty_buffer_free_all(struct tty_port *port)
{
struct tty_bufhead *buf = &port->buf;
- struct tty_buffer *p;
+ struct tty_buffer *p, *next;
+ struct llist_node *llist;
while ((p = buf->head) != NULL) {
buf->head = p->next;
kfree(p);
}
- while ((p = buf->free) != NULL) {
- buf->free = p->next;
+ llist = llist_del_all(&buf->free);
+ llist_for_each_entry_safe(p, next, llist, free)
kfree(p);
- }
+
buf->tail = NULL;
buf->memory_used = 0;
}
@@ -68,22 +69,20 @@ void tty_buffer_free_all(struct tty_port *port)
* allocation behaviour.
* Return NULL if out of memory or the allocation would exceed the
* per device queue
- *
- * Locking: Caller must hold tty->buf.lock
*/
static struct tty_buffer *tty_buffer_alloc(struct tty_port *port, size_t size)
{
- struct tty_buffer **tbh = &port->buf.free;
+ struct llist_node *free;
struct tty_buffer *p;
/* Round the buffer size out */
size = __ALIGN_MASK(size, TTYB_ALIGN_MASK);
if (size <= MIN_TTYB_SIZE) {
- if (*tbh) {
- p = *tbh;
- *tbh = p->next;
+ free = llist_del_first(&port->buf.free);
+ if (free) {
+ p = llist_entry(free, struct tty_buffer, free);
goto found;
}
}
@@ -109,8 +108,6 @@ found:
*
* Free a tty buffer, or add it to the free list according to our
* internal strategy
- *
- * Locking: Caller must hold tty->buf.lock
*/
static void tty_buffer_free(struct tty_port *port, struct tty_buffer *b)
@@ -123,10 +120,8 @@ static void tty_buffer_free(struct tty_port *port, struct tty_buffer *b)
if (b->size > MIN_TTYB_SIZE)
kfree(b);
- else {
- b->next = buf->free;
- buf->free = b;
- }
+ else
+ llist_add(&b->free, &buf->free);
}
/**
@@ -542,7 +537,7 @@ void tty_buffer_init(struct tty_port *port)
spin_lock_init(&buf->lock);
buf->head = NULL;
buf->tail = NULL;
- buf->free = NULL;
+ init_llist_head(&buf->free);
buf->memory_used = 0;
INIT_WORK(&buf->work, flush_to_ldisc);
}
diff --git a/include/linux/llist.h b/include/linux/llist.h
index a5199f6..97cf31d 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -125,6 +125,29 @@ static inline void init_llist_head(struct llist_head *list)
(pos) = llist_entry((pos)->member.next, typeof(*(pos)), member))
/**
+ * llist_for_each_entry_safe - iterate over some deleted entries of lock-less list of given type
+ * safe against removal of list entry
+ * @pos: the type * to use as a loop cursor.
+ * @n: another type * to use as temporary storage
+ * @node: the first entry of deleted list entries.
+ * @member: the name of the llist_node with the struct.
+ *
+ * In general, some entries of the lock-less list can be traversed
+ * safely only after being removed from list, so start with an entry
+ * instead of list head.
+ *
+ * If being used on entries deleted from lock-less list directly, the
+ * traverse order is from the newest to the oldest added entry. If
+ * you want to traverse from the oldest to the newest, you must
+ * reverse the order by yourself before traversing.
+ */
+#define llist_for_each_entry_safe(pos, n, node, member) \
+ for (pos = llist_entry((node), typeof(*pos), member); \
+ &pos->member != NULL && \
+ (n = llist_entry(pos->member.next, typeof(*n), member), true); \
+ pos = n)
+
+/**
* llist_empty - tests whether a lock-less list is empty
* @head: the list to test
*
diff --git a/include/linux/tty.h b/include/linux/tty.h
index c0ee322..a01fda7 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -11,6 +11,7 @@
#include <linux/tty_flags.h>
#include <uapi/linux/tty.h>
#include <linux/rwsem.h>
+#include <linux/llist.h>
@@ -30,7 +31,10 @@
#define __DISABLED_CHAR '\0'
struct tty_buffer {
- struct tty_buffer *next;
+ union {
+ struct tty_buffer *next;
+ struct llist_node free;
+ };
int used;
int size;
int commit;
@@ -65,7 +69,7 @@ struct tty_bufhead {
spinlock_t lock;
struct tty_buffer *head; /* Queue head */
struct tty_buffer *tail; /* Active buffer */
- struct tty_buffer *free; /* Free queue head */
+ struct llist_head free; /* Free queue head */
int memory_used; /* Buffer space used excluding
free queue */
};
--
1.8.1.2
next prev parent reply other threads:[~2013-04-15 15:26 UTC|newest]
Thread overview: 237+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-19 20:21 [PATCH 00/18] lockless n_tty receive path Peter Hurley
2013-03-19 20:21 ` [PATCH 01/18] tty: Don't change receive_room for ioctl(TIOCSETD) Peter Hurley
2013-03-19 20:21 ` [PATCH 02/18] tty: Make ldisc input flow control concurrency-friendly Peter Hurley
2013-03-19 20:21 ` [PATCH 03/18] tty: Simplify tty buffer/ldisc interface with helper function Peter Hurley
2013-03-19 22:42 ` Ilya Zykov
2013-03-19 23:50 ` Peter Hurley
2013-03-20 12:47 ` Ilya Zykov
2013-03-20 17:20 ` [PATCH] tty: Fix race condition if flushing tty flip buffers Peter Hurley
2013-03-20 17:56 ` Ilya Zykov
2013-04-08 18:48 ` Greg Kroah-Hartman
2013-04-08 20:03 ` Peter Hurley
2013-03-20 17:49 ` [PATCH 03/18] tty: Simplify tty buffer/ldisc interface with helper function Peter Hurley
2013-03-20 19:25 ` Ilya Zykov
2013-03-19 20:21 ` [PATCH 04/18] n_tty: Factor canonical mode copy from n_tty_read() Peter Hurley
2013-03-19 20:21 ` [PATCH 05/18] n_tty: Line copy to user buffer in canonical mode Peter Hurley
2013-03-19 20:21 ` [PATCH 06/18] n_tty: Split n_tty_chars_in_buffer() for reader-only interface Peter Hurley
2013-03-19 20:21 ` [PATCH 07/18] tty: Deprecate ldisc .chars_in_buffer() method Peter Hurley
2013-03-19 20:21 ` [PATCH 08/18] n_tty: Get read_cnt through accessor Peter Hurley
2013-03-19 20:21 ` [PATCH 09/18] n_tty: Don't wrap input buffer indices at buffer size Peter Hurley
2013-03-19 20:21 ` [PATCH 10/18] n_tty: Remove read_cnt Peter Hurley
2013-03-19 20:21 ` [PATCH 11/18] tty: Convert termios_mutex to termios_rwsem Peter Hurley
2013-03-19 20:21 ` [PATCH 12/18] n_tty: Access termios values safely Peter Hurley
2013-03-19 20:21 ` [PATCH 13/18] n_tty: Replace canon_data with index comparison Peter Hurley
2013-03-19 20:21 ` [PATCH 14/18] n_tty: Make N_TTY ldisc receive path lockless Peter Hurley
2013-03-19 20:21 ` [PATCH 15/18] n_tty: Reset lnext if canonical mode changes Peter Hurley
2013-03-19 20:21 ` [PATCH 16/18] n_tty: Fix type mismatches in receive_buf raw copy Peter Hurley
2013-03-19 20:21 ` [PATCH 17/18] n_tty: Don't wait for buffer work in read() loop Peter Hurley
2013-03-19 20:21 ` [PATCH 18/18] n_tty: Separate buffer indices to prevent cache-line sharing Peter Hurley
2013-03-27 11:43 ` [PATCH v2 00/18] lockless n_tty receive path Peter Hurley
2013-03-27 11:43 ` [PATCH v2 01/18] tty: Don't change receive_room for ioctl(TIOCSETD) Peter Hurley
2013-03-27 11:43 ` [PATCH v2 02/18] tty: Make ldisc input flow control concurrency-friendly Peter Hurley
2013-03-27 11:43 ` [PATCH v2 03/18] tty: Simplify tty buffer/ldisc interface with helper function Peter Hurley
2013-03-27 11:43 ` [PATCH v2 04/18] n_tty: Factor canonical mode copy from n_tty_read() Peter Hurley
2013-03-27 11:43 ` [PATCH v2 05/18] n_tty: Line copy to user buffer in canonical mode Peter Hurley
2013-03-27 11:43 ` [PATCH v2 06/18] n_tty: Split n_tty_chars_in_buffer() for reader-only interface Peter Hurley
2013-03-27 11:43 ` [PATCH v2 07/18] tty: Deprecate ldisc .chars_in_buffer() method Peter Hurley
2013-03-27 11:43 ` [PATCH v2 08/18] n_tty: Get read_cnt through accessor Peter Hurley
2013-03-27 11:43 ` [PATCH v2 09/18] n_tty: Don't wrap input buffer indices at buffer size Peter Hurley
2013-03-27 11:44 ` [PATCH v2 10/18] n_tty: Remove read_cnt Peter Hurley
2013-03-27 11:44 ` [PATCH v2 11/18] tty: Convert termios_mutex to termios_rwsem Peter Hurley
2013-03-27 11:44 ` [PATCH v2 12/18] n_tty: Access termios values safely Peter Hurley
2013-03-27 11:44 ` [PATCH v2 13/18] n_tty: Replace canon_data with index comparison Peter Hurley
2013-03-27 11:44 ` [PATCH v2 14/18] n_tty: Make N_TTY ldisc receive path lockless Peter Hurley
2013-03-27 11:44 ` [PATCH v2 15/18] n_tty: Reset lnext if canonical mode changes Peter Hurley
2013-03-27 11:44 ` [PATCH v2 16/18] n_tty: Fix type mismatches in receive_buf raw copy Peter Hurley
2013-03-27 11:44 ` [PATCH v2 17/18] n_tty: Don't wait for buffer work in read() loop Peter Hurley
2013-03-27 11:44 ` [PATCH v2 18/18] n_tty: Separate buffer indices to prevent cache-line sharing Peter Hurley
2013-03-27 11:46 ` [PATCH v2 00/18] lockless n_tty receive path Peter Hurley
2013-04-15 15:19 ` [PATCH v3 00/24] " Peter Hurley
2013-04-15 15:19 ` [PATCH v3 01/24] tty: Don't change receive_room for ioctl(TIOCSETD) Peter Hurley
2013-04-15 15:19 ` [PATCH v3 02/24] tty: Simplify tty buffer/ldisc interface with helper function Peter Hurley
2013-04-15 15:19 ` [PATCH v3 03/24] tty: Make ldisc input flow control concurrency-friendly Peter Hurley
2013-04-15 15:19 ` [PATCH v3 04/24] n_tty: Factor canonical mode copy from n_tty_read() Peter Hurley
2013-04-15 15:19 ` [PATCH v3 05/24] n_tty: Line copy to user buffer in canonical mode Peter Hurley
2013-04-15 15:19 ` [PATCH v3 06/24] n_tty: Split n_tty_chars_in_buffer() for reader-only interface Peter Hurley
2013-04-15 15:19 ` [PATCH v3 07/24] tty: Deprecate ldisc .chars_in_buffer() method Peter Hurley
2013-04-15 15:19 ` [PATCH v3 08/24] n_tty: Get read_cnt through accessor Peter Hurley
2013-04-15 15:19 ` [PATCH v3 09/24] n_tty: Don't wrap input buffer indices at buffer size Peter Hurley
2013-04-15 15:19 ` [PATCH v3 10/24] n_tty: Remove read_cnt Peter Hurley
2013-04-15 15:19 ` [PATCH v3 11/24] tty: Convert termios_mutex to termios_rwsem Peter Hurley
2013-04-15 15:19 ` [PATCH v3 12/24] n_tty: Access termios values safely Peter Hurley
2013-04-15 15:19 ` [PATCH v3 13/24] n_tty: Replace canon_data with index comparison Peter Hurley
2013-04-15 15:19 ` [PATCH v3 14/24] n_tty: Make N_TTY ldisc receive path lockless Peter Hurley
2013-04-15 15:19 ` [PATCH v3 15/24] n_tty: Reset lnext if canonical mode changes Peter Hurley
2013-04-15 15:19 ` [PATCH v3 16/24] n_tty: Fix type mismatches in receive_buf raw copy Peter Hurley
2013-04-15 15:19 ` [PATCH v3 17/24] n_tty: Don't wait for buffer work in read() loop Peter Hurley
2013-04-15 15:19 ` [PATCH v3 18/24] n_tty: Separate buffer indices to prevent cache-line sharing Peter Hurley
2013-04-15 15:19 ` [PATCH v3 19/24] tty: Only guarantee termios read safety for throttle/unthrottle Peter Hurley
2013-04-15 15:19 ` [PATCH v3 20/24] n_tty: Move chars_in_buffer() to factor throttle/unthrottle Peter Hurley
2013-04-15 15:19 ` [PATCH v3 21/24] n_tty: Factor throttle/unthrottle into helper functions Peter Hurley
2013-04-15 15:19 ` [PATCH v3 22/24] n_tty: Move n_tty_write_wakeup() to avoid forward declaration Peter Hurley
2013-04-15 15:19 ` [PATCH v3 23/24] n_tty: Special case pty flow control Peter Hurley
2013-04-15 15:19 ` [PATCH v3 24/24] n_tty: Queue buffer work on any available cpu Peter Hurley
2013-04-15 15:25 ` [PATCH 00/16] lockless tty flip buffers Peter Hurley
2013-04-15 15:25 ` [PATCH 01/16] tty: Compute flip buffer ptrs Peter Hurley
2013-04-15 15:25 ` [PATCH 02/16] tty: Fix flip buffer free list Peter Hurley
2013-04-15 15:25 ` [PATCH 03/16] tty: Factor flip buffer initialization into helper function Peter Hurley
2013-04-15 15:25 ` [PATCH 04/16] tty: Merge tty_buffer_find() into tty_buffer_alloc() Peter Hurley
2013-04-15 15:25 ` [PATCH 05/16] tty: Use generic names for flip buffer list cursors Peter Hurley
2013-04-15 15:25 ` Peter Hurley [this message]
2013-04-15 15:25 ` [PATCH 07/16] tty: Simplify flip buffer list with 0-sized sentinel Peter Hurley
2013-04-15 15:25 ` [PATCH 08/16] tty: Track flip buffer memory limit atomically Peter Hurley
2013-04-15 15:26 ` [PATCH 09/16] tty: Make driver-side flip buffers lockless Peter Hurley
2013-04-15 15:26 ` [PATCH 10/16] tty: Ensure single-threaded flip buffer consumer with mutex Peter Hurley
2013-04-15 15:26 ` [PATCH 11/16] tty: Only perform flip buffer flush from tty_buffer_flush() Peter Hurley
2013-04-15 15:26 ` [PATCH 12/16] tty: Avoid false-sharing flip buffer ptrs Peter Hurley
2013-04-15 15:26 ` [PATCH 13/16] tty: Use non-atomic state to signal flip buffer flush pending Peter Hurley
2013-04-15 15:26 ` [PATCH 14/16] tty: Merge __tty_flush_buffer() into lone call site Peter Hurley
2013-04-15 15:26 ` [PATCH 15/16] tty: Fix unsafe vt paste_selection() Peter Hurley
2013-04-15 15:26 ` [PATCH 16/16] tty: Remove private constant from global namespace Peter Hurley
2013-04-15 15:29 ` [PATCH 0/9] mostly lockless tty echo Peter Hurley
2013-04-15 15:29 ` [PATCH 1/9] n_tty: Remove unused echo_overrun field Peter Hurley
2013-04-15 15:29 ` [PATCH 2/9] n_tty: Use separate head and tail indices for echo_buf Peter Hurley
2013-04-15 15:29 ` [PATCH 3/9] n_tty: Replace echo_cnt with computed value Peter Hurley
2013-04-15 15:29 ` [PATCH 4/9] n_tty: Remove echo_lock Peter Hurley
2013-04-15 15:29 ` [PATCH 5/9] n_tty: Eliminate echo_commit memory barrier Peter Hurley
2013-04-15 15:29 ` [PATCH 6/9] n_tty: Process echoes in blocks Peter Hurley
2013-04-15 15:29 ` [PATCH 7/9] n_tty: Only flush echo output if actually output Peter Hurley
2013-04-15 15:29 ` [PATCH 8/9] n_tty: Eliminate counter in __process_echoes Peter Hurley
2013-04-15 15:29 ` [PATCH 9/9] n_tty: Avoid false-sharing echo buffer indices Peter Hurley
2013-04-15 15:32 ` [PATCH 00/20] streamline per-char receiving Peter Hurley
2013-04-15 15:32 ` [PATCH 01/20] n_tty: Fix EOF push handling Peter Hurley
2013-04-15 15:32 ` [PATCH 02/20] n_tty: Remove alias ptrs in __receive_buf() Peter Hurley
2013-04-15 15:32 ` [PATCH 03/20] n_tty: Move buffers into n_tty_data Peter Hurley
2013-04-15 15:32 ` [PATCH 04/20] n_tty: Rename process_char_map to char_map Peter Hurley
2013-04-15 15:32 ` [PATCH 05/20] n_tty: Simplify __receive_buf loop count Peter Hurley
2013-04-15 15:32 ` [PATCH 06/20] n_tty: Factor 'real raw' receive_buf into standalone fn Peter Hurley
2013-04-15 15:32 ` [PATCH 07/20] n_tty: Factor signal char handling into separate fn Peter Hurley
2013-04-15 15:32 ` [PATCH 08/20] n_tty: Factor flagged " Peter Hurley
2013-04-15 15:32 ` [PATCH 09/20] n_tty: Factor raw mode receive_buf() " Peter Hurley
2013-04-15 15:32 ` [PATCH 10/20] n_tty: Special case EXTPROC receive_buf() as raw mode Peter Hurley
2013-04-15 15:32 ` [PATCH 11/20] n_tty: Factor tty->closing receive_buf() into separate fn Peter Hurley
2013-04-15 15:32 ` [PATCH 12/20] n_tty: Factor standard per-char i/o " Peter Hurley
2013-04-15 15:32 ` [PATCH 13/20] n_tty: Eliminate char tests from IXANY restart test Peter Hurley
2013-04-15 15:32 ` [PATCH 14/20] n_tty: Split n_tty_receive_char() Peter Hurley
2013-04-15 15:32 ` [PATCH 15/20] n_tty: Factor ISTRIP and IUCLC receive_buf into separate fn Peter Hurley
2013-04-15 15:32 ` [PATCH 16/20] n_tty: Factor PARMRK from normal per-char i/o Peter Hurley
2013-04-15 15:32 ` [PATCH 17/20] n_tty: Remove overflow tests from receive_buf() path Peter Hurley
2013-04-15 15:32 ` [PATCH 18/20] n_tty: Un-inline single-use functions Peter Hurley
2013-04-15 15:32 ` [PATCH 19/20] n_tty: Factor LNEXT processing from per-char i/o path Peter Hurley
2013-04-15 15:32 ` [PATCH 20/20] tty: Remove extra wakeup from pty write() path Peter Hurley
2013-04-15 20:14 ` [PATCH v3 00/24] lockless n_tty receive path Greg Kroah-Hartman
2013-04-16 10:15 ` [PATCH 1/7] tty: Add timed, writer-prioritized rw semaphore Peter Hurley
2013-04-16 10:15 ` [PATCH 2/7] tty: Add lock/unlock ldisc pair functions Peter Hurley
2013-05-20 19:34 ` Greg Kroah-Hartman
2013-05-20 21:44 ` Peter Hurley
2013-05-20 23:06 ` Greg Kroah-Hartman
2013-05-20 23:38 ` Peter Hurley
2013-06-03 19:24 ` Greg Kroah-Hartman
2013-06-15 11:04 ` [PATCH 0/6] ldsem patchset, reordered and rebased Peter Hurley
2013-06-15 11:04 ` [PATCH 1/6] tty: Fix tty_ldisc_lock name collision Peter Hurley
2013-06-15 11:04 ` [PATCH 2/6] tty: Add lock/unlock ldisc pair functions Peter Hurley
2013-06-15 11:04 ` [PATCH 3/6] tty: Replace ldisc locking with ldisc_sem Peter Hurley
2013-06-15 11:04 ` [PATCH 4/6] tty: Clarify ldisc variable Peter Hurley
2013-06-15 11:04 ` [PATCH 5/6] tty: Fix hangup race with TIOCSETD ioctl Peter Hurley
2013-06-15 11:04 ` [PATCH 6/6] tty: Clarify multiple-references comment in " Peter Hurley
2013-07-23 23:44 ` [PATCH 0/6] ldsem patchset, reordered and rebased Greg Kroah-Hartman
2013-04-16 10:15 ` [PATCH 3/7] tty: Replace ldisc locking with ldisc_sem Peter Hurley
2013-04-16 10:15 ` [PATCH 4/7] tty: Clarify ldisc variable Peter Hurley
2013-04-16 10:15 ` [PATCH 5/7] tty: Fix hangup race with TIOCSETD ioctl Peter Hurley
2013-04-16 10:15 ` [PATCH 6/7] tty: Clarify multiple-references comment in " Peter Hurley
2013-04-16 10:15 ` [PATCH 7/7] tty: Fix tty_ldisc_lock name collision Peter Hurley
2013-06-15 13:14 ` [PATCH v4 00/24] lockless n_tty receive path Peter Hurley
2013-06-15 13:14 ` [PATCH v4 01/24] tty: Don't change receive_room for ioctl(TIOCSETD) Peter Hurley
2013-06-15 13:14 ` [PATCH v4 02/24] tty: Simplify tty buffer/ldisc interface with helper function Peter Hurley
2013-06-15 13:14 ` [PATCH v4 03/24] tty: Make ldisc input flow control concurrency-friendly Peter Hurley
2013-06-15 13:14 ` [PATCH v4 04/24] n_tty: Factor canonical mode copy from n_tty_read() Peter Hurley
2013-06-15 13:14 ` [PATCH v4 05/24] n_tty: Line copy to user buffer in canonical mode Peter Hurley
2013-06-15 13:14 ` [PATCH v4 06/24] n_tty: Split n_tty_chars_in_buffer() for reader-only interface Peter Hurley
2013-06-15 13:14 ` [PATCH v4 07/24] tty: Deprecate ldisc .chars_in_buffer() method Peter Hurley
2013-06-15 13:14 ` [PATCH v4 08/24] n_tty: Get read_cnt through accessor Peter Hurley
2013-06-15 13:14 ` [PATCH v4 09/24] n_tty: Don't wrap input buffer indices at buffer size Peter Hurley
2013-06-15 13:14 ` [PATCH v4 10/24] n_tty: Remove read_cnt Peter Hurley
2013-06-15 13:14 ` [PATCH v4 11/24] tty: Convert termios_mutex to termios_rwsem Peter Hurley
2013-06-15 13:14 ` [PATCH v4 12/24] n_tty: Access termios values safely Peter Hurley
2013-06-15 13:14 ` [PATCH v4 13/24] n_tty: Replace canon_data with index comparison Peter Hurley
2013-06-15 13:14 ` [PATCH v4 14/24] n_tty: Make N_TTY ldisc receive path lockless Peter Hurley
2013-06-15 13:14 ` [PATCH v4 15/24] n_tty: Reset lnext if canonical mode changes Peter Hurley
2013-06-15 13:14 ` [PATCH v4 16/24] n_tty: Fix type mismatches in receive_buf raw copy Peter Hurley
2013-06-15 13:14 ` [PATCH v4 17/24] n_tty: Don't wait for buffer work in read() loop Peter Hurley
2013-06-15 13:14 ` [PATCH v4 18/24] n_tty: Separate buffer indices to prevent cache-line sharing Peter Hurley
2013-06-15 13:14 ` [PATCH v4 19/24] tty: Only guarantee termios read safety for throttle/unthrottle Peter Hurley
2013-06-15 13:14 ` [PATCH v4 20/24] n_tty: Move chars_in_buffer() to factor throttle/unthrottle Peter Hurley
2013-06-15 13:14 ` [PATCH v4 21/24] n_tty: Factor throttle/unthrottle into helper functions Peter Hurley
2013-06-15 13:14 ` [PATCH v4 22/24] n_tty: Move n_tty_write_wakeup() to avoid forward declaration Peter Hurley
2013-06-15 13:14 ` [PATCH v4 23/24] n_tty: Special case pty flow control Peter Hurley
2013-07-23 12:47 ` [PATCH v5 " Peter Hurley
2013-06-15 13:14 ` [PATCH v4 24/24] n_tty: Queue buffer work on any available cpu Peter Hurley
2013-06-15 13:36 ` [PATCH v2 00/16] lockless tty flip buffers Peter Hurley
2013-06-15 13:36 ` [PATCH v2 01/16] tty: Compute flip buffer ptrs Peter Hurley
2013-06-15 13:36 ` [PATCH v2 02/16] tty: Fix flip buffer free list Peter Hurley
2013-06-15 13:36 ` [PATCH v2 03/16] tty: Factor flip buffer initialization into helper function Peter Hurley
2013-06-15 13:36 ` [PATCH v2 04/16] tty: Merge tty_buffer_find() into tty_buffer_alloc() Peter Hurley
2013-06-15 13:36 ` [PATCH v2 05/16] tty: Use generic names for flip buffer list cursors Peter Hurley
2013-06-15 13:36 ` [PATCH v2 06/16] tty: Use lockless flip buffer free list Peter Hurley
2013-06-15 13:36 ` [PATCH v2 07/16] tty: Simplify flip buffer list with 0-sized sentinel Peter Hurley
2013-06-15 13:36 ` [PATCH v2 08/16] tty: Track flip buffer memory limit atomically Peter Hurley
2013-06-15 13:36 ` [PATCH v2 09/16] tty: Make driver-side flip buffers lockless Peter Hurley
2013-06-15 13:36 ` [PATCH v2 10/16] tty: Ensure single-threaded flip buffer consumer with mutex Peter Hurley
2013-06-15 13:36 ` [PATCH v2 11/16] tty: Only perform flip buffer flush from tty_buffer_flush() Peter Hurley
2013-06-15 13:36 ` [PATCH v2 12/16] tty: Avoid false-sharing flip buffer ptrs Peter Hurley
2013-06-15 13:36 ` [PATCH v2 13/16] tty: Use non-atomic state to signal flip buffer flush pending Peter Hurley
2013-06-15 13:36 ` [PATCH v2 14/16] tty: Merge __tty_flush_buffer() into lone call site Peter Hurley
2013-06-15 13:36 ` [PATCH v2 15/16] tty: Fix unsafe vt paste_selection() Peter Hurley
2013-06-15 13:36 ` [PATCH v2 16/16] tty: Remove private constant from global namespace Peter Hurley
2013-06-15 14:04 ` [PATCH v2 0/9] mostly lockless tty echo Peter Hurley
2013-06-15 14:04 ` [PATCH v2 1/9] n_tty: Remove unused echo_overrun field Peter Hurley
2013-06-15 14:04 ` [PATCH v2 2/9] n_tty: Use separate head and tail indices for echo_buf Peter Hurley
2013-06-15 14:04 ` [PATCH v2 3/9] n_tty: Replace echo_cnt with computed value Peter Hurley
2013-06-15 14:04 ` [PATCH v2 4/9] n_tty: Remove echo_lock Peter Hurley
2013-06-15 14:04 ` [PATCH v2 5/9] n_tty: Eliminate echo_commit memory barrier Peter Hurley
2013-06-15 14:04 ` [PATCH v2 6/9] n_tty: Process echoes in blocks Peter Hurley
2013-07-23 23:53 ` Greg Kroah-Hartman
2013-07-25 1:33 ` Peter Hurley
2013-06-15 14:04 ` [PATCH v2 7/9] n_tty: Only flush echo output if actually output Peter Hurley
2013-06-15 14:04 ` [PATCH v2 8/9] n_tty: Eliminate counter in __process_echoes Peter Hurley
2013-06-15 14:04 ` [PATCH v2 9/9] n_tty: Avoid false-sharing echo buffer indices Peter Hurley
2013-06-15 14:21 ` [PATCH v2 00/20] tty: streamline per-char receiving Peter Hurley
2013-06-15 14:21 ` [PATCH v2 01/20] n_tty: Fix EOF push handling Peter Hurley
2013-06-15 14:21 ` [PATCH v2 02/20] n_tty: Remove alias ptrs in __receive_buf() Peter Hurley
2013-06-15 14:21 ` [PATCH v2 03/20] n_tty: Move buffers into n_tty_data Peter Hurley
2013-06-15 14:21 ` [PATCH v2 04/20] n_tty: Rename process_char_map to char_map Peter Hurley
2013-06-15 14:21 ` [PATCH v2 05/20] n_tty: Simplify __receive_buf loop count Peter Hurley
2013-06-15 14:21 ` [PATCH v2 06/20] n_tty: Factor 'real raw' receive_buf into standalone fn Peter Hurley
2013-06-15 14:21 ` [PATCH v2 07/20] n_tty: Factor signal char handling into separate fn Peter Hurley
2013-06-15 14:21 ` [PATCH v2 08/20] n_tty: Factor flagged " Peter Hurley
2013-06-15 14:21 ` [PATCH v2 09/20] n_tty: Factor raw mode receive_buf() " Peter Hurley
2013-06-15 14:21 ` [PATCH v2 10/20] n_tty: Special case EXTPROC receive_buf() as raw mode Peter Hurley
2013-06-15 14:21 ` [PATCH v2 11/20] n_tty: Factor tty->closing receive_buf() into separate fn Peter Hurley
2013-06-15 14:21 ` [PATCH v2 12/20] n_tty: Factor standard per-char i/o " Peter Hurley
2013-07-24 0:12 ` Greg Kroah-Hartman
2013-07-24 0:49 ` Peter Hurley
2013-07-24 12:29 ` [PATCH v3 1/9] " Peter Hurley
2013-07-24 12:29 ` [PATCH v3 2/9] n_tty: Eliminate char tests from IXANY restart test Peter Hurley
2013-07-24 12:29 ` [PATCH v3 3/9] n_tty: Split n_tty_receive_char() Peter Hurley
2013-07-24 12:29 ` [PATCH v3 4/9] n_tty: Factor ISTRIP and IUCLC receive_buf into separate fn Peter Hurley
2013-07-24 12:29 ` [PATCH v3 5/9] n_tty: Factor PARMRK from normal per-char i/o Peter Hurley
2013-07-24 12:29 ` [PATCH v3 6/9] n_tty: Remove overflow tests from receive_buf() path Peter Hurley
2013-07-24 12:29 ` [PATCH v3 7/9] n_tty: Un-inline single-use functions Peter Hurley
2013-07-24 12:29 ` [PATCH v3 8/9] n_tty: Factor LNEXT processing from per-char i/o path Peter Hurley
2013-07-24 12:29 ` [PATCH v3 9/9] tty: Remove extra wakeup from pty write() path Peter Hurley
2013-06-15 14:21 ` [PATCH v2 13/20] n_tty: Eliminate char tests from IXANY restart test Peter Hurley
2013-06-15 14:21 ` [PATCH v2 14/20] n_tty: Split n_tty_receive_char() Peter Hurley
2013-06-15 14:21 ` [PATCH v2 15/20] n_tty: Factor ISTRIP and IUCLC receive_buf into separate fn Peter Hurley
2013-06-15 14:21 ` [PATCH v2 16/20] n_tty: Factor PARMRK from normal per-char i/o Peter Hurley
2013-06-15 14:21 ` [PATCH v2 17/20] n_tty: Remove overflow tests from receive_buf() path Peter Hurley
2013-06-15 14:21 ` [PATCH v2 18/20] n_tty: Un-inline single-use functions Peter Hurley
2013-06-15 14:21 ` [PATCH v2 19/20] n_tty: Factor LNEXT processing from per-char i/o path Peter Hurley
2013-06-15 14:21 ` [PATCH v2 20/20] tty: Remove extra wakeup from pty write() path Peter Hurley
2013-07-20 17:00 ` Peter Hurley
2013-07-23 12:57 ` Peter Hurley
2013-07-23 15:02 ` Greg Kroah-Hartman
2013-07-24 0:04 ` [PATCH v2 0/9] mostly lockless tty echo Greg Kroah-Hartman
2013-07-23 23:53 ` [PATCH v2 00/16] lockless tty flip buffers Greg Kroah-Hartman
2013-06-17 20:01 ` [PATCH v4 00/24] lockless n_tty receive path Greg Kroah-Hartman
2013-06-17 20:32 ` Peter Hurley
2013-07-23 23:44 ` Greg Kroah-Hartman
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