-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
* lttng-tracker-pid.c
*
- * LTTng Process ID trackering.
+ * LTTng Process ID tracking.
*
* Copyright (C) 2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; only
- * version 2.1 of the License.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/module.h>
#include <linux/err.h>
#include <linux/seq_file.h>
#include <linux/stringify.h>
-#include <linux/rculist.h>
#include <linux/hash.h>
#include <linux/rcupdate.h>
-#include "wrapper/tracepoint.h"
-#include "lttng-events.h"
+#include <wrapper/tracepoint.h>
+#include <wrapper/rcu.h>
+#include <wrapper/list.h>
+#include <lttng-events.h>
/*
* Hash table is allocated and freed when there are no possible
* sessions_mutex across calls to create, destroy, add, and del
* functions of this API.
*/
-struct lttng_pid_hash_node {
- struct hlist_node hlist;
- int pid;
-};
+int lttng_pid_tracker_get_node_pid(const struct lttng_pid_hash_node *node)
+{
+ return node->pid;
+}
/*
* Lookup performed from RCU read-side critical section (RCU sched),
uint32_t hash = hash_32(pid, 32);
head = &lpf->pid_hash[hash & (LTTNG_PID_TABLE_SIZE - 1)];
- hlist_for_each_entry_rcu_notrace(e, head, hlist) {
+ lttng_hlist_for_each_entry_rcu(e, head, hlist) {
if (pid == e->pid)
return 1; /* Found */
}
uint32_t hash = hash_32(pid, 32);
head = &lpf->pid_hash[hash & (LTTNG_PID_TABLE_SIZE - 1)];
- hlist_for_each_entry(e, head, hlist) {
+ lttng_hlist_for_each_entry(e, head, hlist) {
if (pid == e->pid)
return -EEXIST;
}
* No need of _safe iteration, because we stop traversal as soon
* as we remove the entry.
*/
- hlist_for_each_entry(e, head, hlist) {
+ lttng_hlist_for_each_entry(e, head, hlist) {
if (pid == e->pid) {
pid_tracker_del_node_rcu(e);
return 0;
struct lttng_pid_hash_node *e;
struct hlist_node *tmp;
- hlist_for_each_entry_safe(e, tmp, head, hlist)
+ lttng_hlist_for_each_entry_safe(e, tmp, head, hlist)
pid_tracker_del_node(e);
}
kfree(lpf);