Steven Rostedt 73c5162aa3 tracing: keep ring buffer to minimum size till used ... Impact: less memory impact on systems not using tracer When the kernel boots up that has tracing configured, it allocates the default size of the ring buffer. This currently happens to be 1.4Megs per possible CPU. This is quite a bit of wasted memory if the system is never using the tracer. The current solution is to keep the ring buffers to a minimum size until the user uses them. Once a tracer is piped into the current_tracer the ring buffer will be expanded to the default size. If the user changes the size of the ring buffer, it will take the size given by the user immediately. If the user adds a "ftrace=" to the kernel command line, then the ring buffers will be set to the default size on initialization. Signed-off-by: Steven Rostedt <srostedt@redhat.com>		2009-03-11 22:15:22 -04:00
..
irq	tracing, genirq: add irq enter and exit trace events	2009-02-26 18:43:50 +01:00
power	PM: Split up sysdev_[suspend|resume] from device_power_[down|up]	2009-02-22 10:33:44 -08:00
time	hrtimers: allow the hot-unplugging of all cpus	2009-01-30 22:35:29 +01:00
trace	tracing: keep ring buffer to minimum size till used	2009-03-11 22:15:22 -04:00
.gitignore
acct.c	[CVE-2009-0029] System call wrappers part 04	2009-01-14 14:15:19 +01:00
async.c	async: use list_move_tail	2009-02-08 10:00:26 -08:00
audit_tree.c	audit: validate comparison operations, store them in sane form	2009-01-04 15:14:42 -05:00
audit.c	[PATCH] fix broken timestamps in AVC generated by kernel threads	2008-12-09 02:27:41 -05:00
audit.h	fixing audit rule ordering mess, part 1	2009-01-04 15:14:41 -05:00
auditfilter.c	audit: validate comparison operations, store them in sane form	2009-01-04 15:14:42 -05:00
auditsc.c	make sure that filterkey of task,always rules is reported	2009-01-04 15:14:42 -05:00
backtracetest.c	backtrace: replace timer with tasklet + completions	2008-06-27 18:09:16 +02:00
bounds.c
capability.c	[CVE-2009-0029] System call wrappers part 04	2009-01-14 14:15:19 +01:00
cgroup_debug.c	cgroups: fix probable race with put_css_set[_taskexit] and find_css_set	2008-10-20 08:52:38 -07:00
cgroup_freezer.c	freezer_cg: disable writing freezer.state of root cgroup	2008-11-12 17:17:16 -08:00
cgroup.c	cgroups: fix possible use after free	2009-02-18 15:37:54 -08:00
compat.c	Allow times and time system calls to return small negative values	2009-01-06 15:59:13 -08:00
configs.c	kernel/configs.c: remove useless comments	2008-10-20 08:52:34 -07:00
cpu.c	stop_machine/cpu hotplug: fix disable_nonboot_cpus	2009-01-07 11:36:14 -08:00
cpuset.c	cpuset: fix possible deadlock in async_rebuild_sched_domains	2009-01-19 02:44:00 +01:00
cred-internals.h	CRED: Inaugurate COW credentials	2008-11-14 10:39:23 +11:00
cred.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6	2009-01-09 13:59:25 -08:00
delayacct.c	schedstat: consolidate per-task cpu runtime stats	2008-12-18 13:54:01 +01:00
dma-coherent.c	dma-coherent: Restore dma_alloc_from_coherent() large alloc fall back policy.	2009-01-21 18:51:53 +09:00
dma.c	kernel/dma.c: remove a CVS keyword	2008-10-16 11:21:30 -07:00
exec_domain.c	[CVE-2009-0029] System call wrappers part 04	2009-01-14 14:15:19 +01:00
exit.c	signal: re-add dead task accumulation stats.	2009-02-05 13:04:33 +01:00
extable.c	tracing/function-graph-tracer: drop the kernel_text_address check	2009-02-09 10:51:38 +01:00
fork.c	Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-02-11 08:24:32 -08:00
freezer.c	freezer_cg: use thaw_process() in unfreeze_cgroup()	2008-10-30 11:38:45 -07:00
futex_compat.c	CRED: Use RCU to access another task's creds and to release a task's own creds	2008-11-14 10:39:19 +11:00
futex.c	futex: fix reference leak	2009-02-11 18:24:08 +01:00
hrtimer.c	hrtimer: prevent negative expiry value after clock_was_set()	2009-01-30 22:35:34 +01:00
itimer.c	timers: split process wide cpu clocks/timers	2009-02-05 13:04:33 +01:00
kallsyms.c	Revert "kbuild: strip generated symbols from *.ko"	2009-01-14 21:38:20 +01:00
Kconfig.freezer	container freezer: implement freezer cgroup subsystem	2008-10-20 08:52:34 -07:00
Kconfig.hz	sched: fix SCHED_HRTICK dependency	2008-07-28 14:37:38 +02:00
Kconfig.preempt	rcu: provide RCU options on non-preempt architectures too	2008-12-25 09:31:28 +01:00
kexec.c	PM: Split up sysdev_[suspend|resume] from device_power_[down|up]	2009-02-22 10:33:44 -08:00
kfifo.c
kgdb.c	kgdb: call touch_softlockup_watchdog on resume	2008-10-06 13:50:59 -05:00
kmod.c	kmod: fix varargs kernel-doc	2009-01-06 15:59:27 -08:00
kprobes.c	kprobes: check CONFIG_FREEZER instead of CONFIG_PM	2009-01-16 14:32:17 -05:00
ksysfs.c	kernel/ksysfs.c:fix dependence on CONFIG_NET	2009-01-06 10:44:31 -08:00
kthread.c	tracepoints: add DECLARE_TRACE() and DEFINE_TRACE()	2008-11-16 09:01:36 +01:00
latencytop.c	KSYM_SYMBOL_LEN fixes	2008-12-10 08:01:54 -08:00
lockdep_internals.h	lockdep: get_user_chars() redo	2009-02-14 23:28:22 +01:00
lockdep_proc.c	lockstat: warn about disabled lock debugging	2009-02-14 23:28:28 +01:00
lockdep_states.h	lockdep: move state bit definitions around	2009-02-14 23:27:59 +01:00
lockdep.c	tracing: add lockdep tracepoints for lock acquire/release	2009-03-04 18:49:58 +01:00
Makefile	PM: fix build for CONFIG_PM unset	2009-02-21 14:17:17 -08:00
marker.c	markers/tracpoints: fix non-modular build	2008-11-16 09:52:03 +01:00
module.c	tracing: trace_bprintk() cleanups	2009-03-06 17:59:12 +01:00
mutex-debug.c	mutex: implement adaptive spinning	2009-01-14 18:09:02 +01:00
mutex-debug.h	mutex: implement adaptive spinning	2009-01-14 18:09:02 +01:00
mutex.c	mutex: adaptive spinnning, performance tweaks	2009-01-14 19:03:54 +01:00
mutex.h	mutex: implement adaptive spinning	2009-01-14 18:09:02 +01:00
notifier.c	Merge commit 'v2.6.28-rc6' into core/debug	2008-11-26 08:22:50 +01:00
ns_cgroup.c	ns_cgroup: remove unused spinlock	2009-01-08 08:31:02 -08:00
nsproxy.c	User namespaces: set of cleanups (v2)	2008-11-24 18:57:41 -05:00
panic.c	oops: increment the oops UUID every time we oops	2009-01-06 15:59:12 -08:00
params.c	Fix compile warning in kernel/params.c	2008-10-23 12:09:00 -07:00
pid_namespace.c	pid_ns: (BUG 11391) change ->child_reaper when init->group_leader exits	2008-09-02 19:21:38 -07:00
pid.c	pid: generalize task_active_pid_ns	2009-01-08 08:31:12 -08:00
pm_qos_params.c	pm_qos_requirement might sleep	2008-09-02 19:21:40 -07:00
posix-cpu-timers.c	timers: more consistently use clock vs timer	2009-02-13 13:04:05 +01:00
posix-timers.c	[CVE-2009-0029] System call wrappers part 05	2009-01-14 14:15:20 +01:00
printk.c	PM: Fix suspend_console and resume_console to use only one semaphore	2009-02-21 14:17:18 -08:00
profile.c	profiling: fix broken profiling regression	2009-02-10 00:50:37 +01:00
ptrace.c	[CVE-2009-0029] System call wrappers part 27	2009-01-14 14:15:29 +01:00
rcuclassic.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
rcupdate.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
rcupreempt_trace.c	"Tree RCU": scalable classic RCU implementation	2008-12-18 21:56:04 +01:00
rcupreempt.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
rcutorture.c	rcu: fix bug in rcutorture system-shutdown code	2009-01-07 23:36:25 +01:00
rcutree_trace.c	"Tree RCU": scalable classic RCU implementation	2008-12-18 21:56:04 +01:00
rcutree.c	rcu: Teach RCU that idle task is not quiscent state at boot	2009-02-26 04:08:14 +01:00
relay.c	Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core	2009-02-03 06:25:38 +01:00
res_counter.c	memcg: memory cgroup resource counters for hierarchy	2009-01-08 08:31:05 -08:00
resource.c	resources: fix parameter name and kernel-doc	2009-01-15 16:39:38 -08:00
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c	sysdev: Pass the attribute to the low level sysdev show/store function	2008-07-21 21:55:02 -07:00
rtmutex.c	hrtimer: convert kernel/* to the new hrtimer apis	2008-09-05 21:35:13 -07:00
rtmutex.h
rwsem.c
sched_clock.c	Merge branch 'sched/clock' into tracing/ftrace	2009-02-27 08:35:19 +01:00
sched_cpupri.c	sched: fix section mismatch	2009-01-06 11:07:15 +01:00
sched_cpupri.h	sched: convert struct cpupri_vec cpumask_var_t.	2008-11-24 17:52:22 +01:00
sched_debug.c	sched: partly revert "sched debug: remove NULL checking in print_cfs_rt_rq()"	2009-01-11 02:40:32 +01:00
sched_fair.c	sched: revert recent sync wakeup changes	2009-02-11 14:43:35 +01:00
sched_features.h	mutex: implement adaptive spinning	2009-01-14 18:09:02 +01:00
sched_idletask.c	sched: add CONFIG_SMP consistency	2008-10-22 10:01:52 +02:00
sched_rt.c	sched_rt: don't use first_cpu on cpumask created with cpumask_and	2009-02-01 10:49:52 +01:00
sched_stats.h	timers: split process wide cpu clocks/timers	2009-02-05 13:04:33 +01:00
sched.c	Merge branch 'core/locking' into tracing/ftrace	2009-03-04 18:49:19 +01:00
seccomp.c	x86-64: seccomp: fix 32/64 syscall hole	2009-03-02 15:41:30 -08:00
semaphore.c	semaphore: __down_common: use signal_pending_state()	2008-08-05 14:33:47 -07:00
signal.c	signal: re-add dead task accumulation stats.	2009-02-05 13:04:33 +01:00
smp.c	generic-ipi: use per cpu data for single cpu ipi calls	2009-01-30 18:31:08 +01:00
softirq.c	trace, lockdep: manual preempt count adding for local_bh_disable	2009-01-23 11:10:57 +01:00
softlockup.c	softlock: fix false panic which can occur if softlockup_thresh is reduced	2009-01-14 11:48:07 +01:00
spinlock.c	lockdep: spin_lock_nest_lock(), checkpatch fixes	2008-08-13 13:56:51 +02:00
srcu.c
stacktrace.c	stacktrace: provide save_stack_trace_tsk() weak alias	2008-12-25 11:44:43 +01:00
stop_machine.c	stop_machine: introduce stop_machine_create/destroy.	2009-01-05 08:40:14 +10:30
sys_ni.c	[CVE-2009-0029] Make sys_syslog a conditional system call	2009-01-14 14:15:16 +01:00
sys.c	sched: don't allow setuid to succeed if the user does not have rt bandwidth	2009-02-27 11:11:53 +01:00
sysctl_check.c	[XFS] remove restricted chown parameter from xfs linux	2008-10-30 18:30:09 +11:00
sysctl.c	mm: fix dirty_bytes/dirty_background_bytes sysctls on 64bit arches	2009-02-11 14:25:35 -08:00
taskstats.c	cpumask: convert rest of files in kernel/	2009-01-01 10:12:28 +10:30
test_kprobes.c	kprobes: add tests for register_kprobes	2009-01-06 15:59:20 -08:00
time.c	[CVE-2009-0029] System call wrappers part 01	2009-01-14 14:15:18 +01:00
timeconst.pl
timer.c	timer: implement lockdep deadlock detection	2009-02-14 23:25:52 +01:00
tracepoint.c	markers/tracpoints: fix non-modular build	2008-11-16 09:52:03 +01:00
tsacct.c	mm: introduce get_mm_hiwater_xxx(), fix taskstats->hiwater_xxx accounting	2009-01-06 15:59:09 -08:00
uid16.c	[CVE-2009-0029] System call wrappers part 19	2009-01-14 14:15:26 +01:00
up.c	smp_call_function_single(): be slightly less stupid, fix #2	2009-01-12 16:04:37 +01:00
user_namespace.c	Fix recursive lock in free_uid()/free_user_ns()	2009-02-27 16:26:21 -08:00
user.c	sched: don't allow setuid to succeed if the user does not have rt bandwidth	2009-02-27 11:11:53 +01:00
utsname_sysctl.c	sysctl: simplify ->strategy	2008-10-16 11:21:47 -07:00
utsname.c	removed unused #include <linux/version.h>'s	2008-08-23 12:14:12 -07:00
wait.c	wait: prevent exclusive waiter starvation	2009-02-05 12:56:48 -08:00
workqueue.c	Merge branches 'tracing/ftrace', 'tracing/kmemtrace' and 'linus' into tracing/core	2009-02-03 06:25:38 +01:00