Li Zefan 7ead8b8313 tracing/events: Add module tracepoints ... Add trace points to trace module_load, module_free, module_get, module_put and module_request, and use trace_event facility to get the trace output. Here's the sample output: TASK-PID CPU# TIMESTAMP FUNCTION | | | | | <...>-42 [000] 1.758380: module_request: fb0 wait=1 call_site=fb_open ... <...>-60 [000] 3.269403: module_load: scsi_wait_scan <...>-60 [000] 3.269432: module_put: scsi_wait_scan call_site=sys_init_module refcnt=0 <...>-61 [001] 3.273168: module_free: scsi_wait_scan ... <...>-1021 [000] 13.836081: module_load: sunrpc <...>-1021 [000] 13.840589: module_put: sunrpc call_site=sys_init_module refcnt=-1 <...>-1027 [000] 13.848098: module_get: sunrpc call_site=try_module_get refcnt=0 <...>-1027 [000] 13.848308: module_get: sunrpc call_site=get_filesystem refcnt=1 <...>-1027 [000] 13.848692: module_put: sunrpc call_site=put_filesystem refcnt=0 ... modprobe-2587 [001] 1088.437213: module_load: trace_events_sample F modprobe-2587 [001] 1088.437786: module_put: trace_events_sample call_site=sys_init_module refcnt=0 Note: - the taints flag can be 'F', 'C' and/or 'P' if mod->taints != 0 - the module refcnt is percpu, so it can be negative in a specific cpu Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Acked-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Rusty Russell <rusty@rustcorp.com.au> LKML-Reference: <4A891B3C.5030608@cn.fujitsu.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-08-17 11:25:08 +02:00
..
gcov
irq	x86/irq: Fix move_irq_desc() for nodes without ram	2009-08-08 17:06:03 +02:00
power
time	clocksource: Prevent NULL pointer dereference	2009-07-19 17:15:54 +02:00
trace	tracing: Support for syscall events raw records in perfcounters	2009-08-11 20:35:30 +02:00
.gitignore
acct.c
async.c
audit_tree.c
audit_watch.c
audit.c
audit.h
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup_debug.c
cgroup_freezer.c
cgroup.c	cgroup avoid permanent sleep at rmdir	2009-07-29 19:10:35 -07:00
compat.c
configs.c
cpu.c
cpuset.c
cred-internals.h
cred.c
delayacct.c
dma-coherent.c
dma.c
exec_domain.c
exit.c
extable.c
fork.c	execve: must clear current->clear_child_tid	2009-08-07 10:39:56 -07:00
freezer.c	sched: fix nr_uninterruptible accounting of frozen tasks really	2009-07-18 14:19:53 +02:00
futex_compat.c
futex.c
groups.c
hrtimer.c
hung_task.c
itimer.c
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.preempt
kexec.c	kexec: fix omitting offset in extended crashkernel syntax	2009-07-29 19:10:34 -07:00
kfifo.c
kgdb.c
kmod.c	tracing/events: Add module tracepoints	2009-08-17 11:25:08 +02:00
kprobes.c	Merge branch 'linus' into tracing/core	2009-08-11 14:19:09 +02:00
ksysfs.c
kthread.c	update the comment in kthread_stop()	2009-07-27 12:15:46 -07:00
latencytop.c
lockdep_internals.h
lockdep_proc.c	lockdep: Fix file mode of lock_stat	2009-08-07 11:58:38 +02:00
lockdep_states.h
lockdep.c
Makefile
marker.c
module.c	tracing/events: Add module tracepoints	2009-08-17 11:25:08 +02:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
panic.c	trace: stop tracer in oops_enter()	2009-07-24 15:30:45 -04:00
params.c
perf_counter.c	perf_counter: Require CAP_SYS_ADMIN for raw tracepoint data	2009-08-10 11:33:09 +02:00
pid_namespace.c
pid.c
pm_qos_params.c
posix-cpu-timers.c	posix_cpu_timers_exit_group(): Do not use thread_group_cputimer()	2009-08-08 18:30:25 +02:00
posix-timers.c	posix-timers: Fix oops in clock_nanosleep() with CLOCK_MONOTONIC_RAW	2009-08-04 10:16:41 +02:00
printk.c
profile.c	profile: suppress warning about large allocations when profile=1 is specified	2009-07-29 19:10:36 -07:00
ptrace.c
rcuclassic.c
rcupdate.c
rcupreempt_trace.c
rcupreempt.c
rcutorture.c
rcutree_trace.c
rcutree.c
rcutree.h
relay.c
res_counter.c
resource.c
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c	rtmutex: Avoid deadlock in rt_mutex_start_proxy_lock()	2009-08-06 05:50:21 +02:00
rtmutex.h
rwsem.c
sched_clock.c
sched_cpupri.c	sched: Fix race in cpupri introduced by cpumask_var changes	2009-08-02 14:23:29 +02:00
sched_cpupri.h
sched_debug.c
sched_fair.c	sched: Fix latencytop and sleep profiling vs group scheduling	2009-08-02 14:10:12 +02:00
sched_features.h
sched_idletask.c
sched_rt.c
sched_stats.h
sched.c	sched: fix load average accounting vs. cpu hotplug	2009-07-18 14:19:52 +02:00
seccomp.c
semaphore.c
signal.c	do_sigaltstack: small cleanups	2009-08-01 11:18:56 -07:00
slow-work.c
smp.c	generic-ipi: fix hotplug_cfd()	2009-08-07 10:39:55 -07:00
softirq.c	softirq: introduce tasklet_hrtimer infrastructure	2009-07-22 17:01:17 +02:00
softlockup.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c
sysctl_check.c
sysctl.c
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c	timer: Avoid reading uninitialized data	2009-07-18 23:11:43 +02:00
tracepoint.c	tracing: Fix syscall tracing on !HAVE_FTRACE_SYSCALLS architectures	2009-08-13 23:38:20 +02:00
tsacct.c
uid16.c
up.c
user_namespace.c
user.c
utsname_sysctl.c
utsname.c
wait.c
workqueue.c