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MEDIUM: mux-h2: use task_kill() during h2_takeover() instead of task_wakeup()

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task_wakeup() passes the task through the global run queue under the
global RQ lock, which is expensive when dealing with large amounts of
h2_takeover() calls. Let's use the new task_kill() instead to kill the
task.
This commit is contained in:
Willy Tarreau 2020-07-01 16:39:33 +02:00
parent 09e0d9ecbc
commit 617e80ff76
1 changed files with 8 additions and 4 deletions
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12
src/mux_h2.c
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@ -6050,6 +6050,7 @@ static void h2_show_fd(struct buffer *msg, struct connection *conn)
static int h2_takeover(struct connection *conn)
{
struct h2c *h2c = conn->ctx;
struct task *task;
if (fd_takeover(conn->handle.fd, conn) != 0)
return -1;
@ -6061,10 +6062,13 @@ static int h2_takeover(struct connection *conn)
*/
h2c->wait_event.tasklet->context = NULL;
tasklet_wakeup(h2c->wait_event.tasklet);
if (h2c->task) {
h2c->task->context = NULL;
/* Wake the task, to let it free itself */
task_wakeup(h2c->task, TASK_WOKEN_OTHER);
task = h2c->task;
if (task) {
task->context = NULL;
h2c->task = NULL;
__ha_barrier_store();
task_kill(task);
h2c->task = task_new(tid_bit);
if (!h2c->task) {