-/*
+/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+ *
* lttng-statedump.c
*
* Linux Trace Toolkit Next Generation Kernel State Dump
* Copyright 2005 Jean-Hugues Deschenes <jean-hugues.deschenes@polymtl.ca>
* Copyright 2006-2012 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
- *
* Changes:
* Eric Clement: Add listing of network IP interface
* 2006, 2007 Mathieu Desnoyers Fix kernel threads
#include <linux/mutex.h>
#include <linux/device.h>
-#include "lttng-events.h"
-#include "lttng-tracer.h"
-#include "wrapper/irqdesc.h"
-#include "wrapper/spinlock.h"
-#include "wrapper/fdtable.h"
-#include "wrapper/nsproxy.h"
-#include "wrapper/irq.h"
-#include "wrapper/tracepoint.h"
-#include "wrapper/genhd.h"
+#include <lttng-events.h>
+#include <lttng-tracer.h>
+#include <wrapper/irqdesc.h>
+#include <wrapper/fdtable.h>
+#include <wrapper/irq.h>
+#include <wrapper/tracepoint.h>
+#include <wrapper/genhd.h>
+#include <wrapper/file.h>
+#include <wrapper/time.h>
#ifdef CONFIG_LTTNG_HAS_LIST_IRQ
#include <linux/irq.h>
/* Define the tracepoints, but do not build the probes */
#define CREATE_TRACE_POINTS
-#define TRACE_INCLUDE_PATH ../instrumentation/events/lttng-module
+#define TRACE_INCLUDE_PATH instrumentation/events/lttng-module
#define TRACE_INCLUDE_FILE lttng-statedump
-#include "instrumentation/events/lttng-module/lttng-statedump.h"
+#define LTTNG_INSTRUMENTATION
+#include <instrumentation/events/lttng-module/lttng-statedump.h>
DEFINE_TRACE(lttng_statedump_block_device);
DEFINE_TRACE(lttng_statedump_end);
DEFINE_TRACE(lttng_statedump_start);
DEFINE_TRACE(lttng_statedump_process_state);
DEFINE_TRACE(lttng_statedump_network_interface);
+#ifdef LTTNG_HAVE_STATEDUMP_CPU_TOPOLOGY
+DEFINE_TRACE(lttng_statedump_cpu_topology);
+#endif
struct lttng_fd_ctx {
char *page;
* the lock is taken, but we are not aware whether this is
* guaranteed or not, so play safe.
*/
- if (fd < fdt->max_fds && test_bit(fd, fdt->close_on_exec))
+ if (fd < fdt->max_fds && lttng_close_on_exec(fd, fdt))
flags |= O_CLOEXEC;
if (IS_ERR(s)) {
struct dentry *dentry = file->f_path.dentry;
return 0;
}
+#ifdef LTTNG_HAVE_STATEDUMP_CPU_TOPOLOGY
+static
+int lttng_enumerate_cpu_topology(struct lttng_session *session)
+{
+ int cpu;
+ const cpumask_t *cpumask = cpu_possible_mask;
+
+ for (cpu = cpumask_first(cpumask); cpu < nr_cpu_ids;
+ cpu = cpumask_next(cpu, cpumask)) {
+ trace_lttng_statedump_cpu_topology(session, &cpu_data(cpu));
+ }
+
+ return 0;
+}
+#else
+static
+int lttng_enumerate_cpu_topology(struct lttng_session *session)
+{
+ return 0;
+}
+#endif
+
#if 0
/*
* FIXME: we cannot take a mmap_sem while in a RCU read-side critical section
down_read(&mm->mmap_sem);
while (map) {
if (map->vm_file)
- ino = map->vm_file->f_dentry->d_inode->i_ino;
+ ino = map->vm_file->lttng_f_dentry->d_inode->i_ino;
else
ino = 0;
trace_lttng_statedump_vm_map(session, p, map, ino);
#ifdef CONFIG_LTTNG_HAS_LIST_IRQ
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,39))
-#define irq_desc_get_chip(desc) get_irq_desc_chip(desc)
-#endif
-
static
int lttng_list_interrupts(struct lttng_session *session)
{
irq_desc_get_chip(desc)->name ? : "unnamed_irq_chip";
local_irq_save(flags);
- wrapper_desc_spin_lock(&desc->lock);
+ raw_spin_lock(&desc->lock);
for (action = desc->action; action; action = action->next) {
trace_lttng_statedump_interrupt(session,
irq, irq_chip_name, action);
}
- wrapper_desc_spin_unlock(&desc->lock);
+ raw_spin_unlock(&desc->lock);
local_irq_restore(flags);
}
return 0;
enum lttng_execution_submode submode,
enum lttng_process_status status)
{
- struct nsproxy *proxy;
struct pid_namespace *pid_ns;
- /*
- * Back and forth on locking strategy within Linux upstream for nsproxy.
- * See Linux upstream commit 728dba3a39c66b3d8ac889ddbe38b5b1c264aec3
- * "namespaces: Use task_lock and not rcu to protect nsproxy"
- * for details.
- */
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0))
- rcu_read_lock();
- proxy = task_nsproxy(p);
-#else /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0)) */
- proxy = p->nsproxy;
-#endif /* #else #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0)) */
- if (proxy) {
- pid_ns = lttng_get_proxy_pid_ns(proxy);
- do {
- trace_lttng_statedump_process_state(session,
- p, type, mode, submode, status, pid_ns);
- pid_ns = pid_ns->parent;
- } while (pid_ns);
- } else {
+ pid_ns = task_active_pid_ns(p);
+ do {
trace_lttng_statedump_process_state(session,
- p, type, mode, submode, status, NULL);
- }
-#if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0))
- rcu_read_unlock();
-#endif /* #if (LINUX_VERSION_CODE < KERNEL_VERSION(3,17,0)) */
+ p, type, mode, submode, status, pid_ns);
+ pid_ns = pid_ns->parent;
+ } while (pid_ns);
}
static
return ret;
ret = lttng_enumerate_block_devices(session);
switch (ret) {
+ case 0:
+ break;
case -ENOSYS:
printk(KERN_WARNING "LTTng: block device enumeration is not supported by kernel\n");
break;
default:
return ret;
}
+ ret = lttng_enumerate_cpu_topology(session);
+ if (ret)
+ return ret;
/* TODO lttng_dump_idt_table(session); */
/* TODO lttng_dump_softirq_vec(session); */
MODULE_LICENSE("GPL and additional rights");
MODULE_AUTHOR("Jean-Hugues Deschenes");
-MODULE_DESCRIPTION("Linux Trace Toolkit Next Generation Statedump");
+MODULE_DESCRIPTION("LTTng statedump provider");
MODULE_VERSION(__stringify(LTTNG_MODULES_MAJOR_VERSION) "."
__stringify(LTTNG_MODULES_MINOR_VERSION) "."
__stringify(LTTNG_MODULES_PATCHLEVEL_VERSION)
projects / lttng-modules.git / blobdiff