systemd/0001-revert-udev-killing.patch

121 lines
4.6 KiB
Diff

From 2b3509a898dcb65d6fba41f3c9cd484b00730017 Mon Sep 17 00:00:00 2001
From: Michal Schmidt <mschmidt@redhat.com>
Date: Thu, 15 Nov 2012 16:55:09 +0100
Subject: [PATCH] revert udev killing
revert of upstream commit 194bbe33382f5365be3865ed1779147cb680f1d3
---
src/udev/udevd.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/src/udev/udevd.c b/src/udev/udevd.c
index ebd601e..53322b0 100644
--- a/src/udev/udevd.c
+++ b/src/udev/udevd.c
@@ -74,7 +74,6 @@ static int exec_delay;
static sigset_t sigmask_orig;
static UDEV_LIST(event_list);
static UDEV_LIST(worker_list);
-char *udev_cgroup;
static bool udev_exit;
enum event_state {
@@ -453,13 +452,22 @@ static int event_queue_insert(struct udev_device *dev)
return 0;
}
-static void worker_kill(struct udev *udev)
+static void worker_kill(struct udev *udev, int retain)
{
struct udev_list_node *loop;
+ int max;
+
+ if (children <= retain)
+ return;
+
+ max = children - retain;
udev_list_node_foreach(loop, &worker_list) {
struct worker *worker = node_to_worker(loop);
+ if (max-- <= 0)
+ break;
+
if (worker->state == WORKER_KILLED)
continue;
@@ -631,7 +639,7 @@ static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl)
log_debug("udevd message (SET_LOG_PRIORITY) received, log_priority=%i\n", i);
log_set_max_level(i);
udev_set_log_priority(udev, i);
- worker_kill(udev);
+ worker_kill(udev, 0);
}
if (udev_ctrl_get_stop_exec_queue(ctrl_msg) > 0) {
@@ -673,7 +681,7 @@ static struct udev_ctrl_connection *handle_ctrl_msg(struct udev_ctrl *uctrl)
}
free(key);
}
- worker_kill(udev);
+ worker_kill(udev, 0);
}
i = udev_ctrl_get_set_children_max(ctrl_msg);
@@ -1198,10 +1206,6 @@ int main(int argc, char *argv[])
rc = 3;
goto exit;
}
-
- /* get our own cgroup, we regularly kill everything udev has left behind */
- if (cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, 0, &udev_cgroup) < 0)
- udev_cgroup = NULL;
} else {
/* open control and netlink socket */
udev_ctrl = udev_ctrl_new(udev);
@@ -1400,7 +1404,7 @@ int main(int argc, char *argv[])
/* discard queued events and kill workers */
event_queue_cleanup(udev, EVENT_QUEUED);
- worker_kill(udev);
+ worker_kill(udev, 0);
/* exit after all has cleaned up */
if (udev_list_node_is_empty(&event_list) && udev_list_node_is_empty(&worker_list))
@@ -1408,13 +1412,9 @@ int main(int argc, char *argv[])
/* timeout at exit for workers to finish */
timeout = 30 * 1000;
- } else if (udev_list_node_is_empty(&event_list) && !children) {
+ } else if (udev_list_node_is_empty(&event_list) && children <= 2) {
/* we are idle */
timeout = -1;
-
- /* cleanup possible left-over processes in our cgroup */
- if (udev_cgroup)
- cg_kill(SYSTEMD_CGROUP_CONTROLLER, udev_cgroup, SIGKILL, false, true, NULL);
} else {
/* kill idle or hanging workers */
timeout = 3 * 1000;
@@ -1435,7 +1435,7 @@ int main(int argc, char *argv[])
/* kill idle workers */
if (udev_list_node_is_empty(&event_list)) {
log_debug("cleanup idle workers\n");
- worker_kill(udev);
+ worker_kill(udev, 2);
}
/* check for hanging events */
@@ -1490,7 +1490,7 @@ int main(int argc, char *argv[])
/* reload requested, HUP signal received, rules changed, builtin changed */
if (reload) {
- worker_kill(udev);
+ worker_kill(udev, 0);
rules = udev_rules_unref(rules);
udev_builtin_exit(udev);
reload = false;
--
1.7.11.7