Frederic Weisbecker 20ab4425a7 tracing: Allocate the ftrace event profile buffer dynamically ... Currently the trace event profile buffer is allocated in the stack. But this may be too much for the stack, as the events can have large statically defined field size and can also grow with dynamic arrays. Allocate two per cpu buffer for all profiled events. The first cpu buffer is used to host every non-nmi context traces. It is protected by disabling the interrupts while writing and committing the trace. The second buffer is reserved for nmi. So that there is no race between them and the first buffer. The whole write/commit section is rcu protected because we release these buffers while deactivating the last profiling trace event. v2: Move the buffers from trace_event to be global, as pointed by Steven Rostedt. v3: Fix the syscall events to handle the profiling buffer races by disabling interrupts, now that the buffers are globals. Suggested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Li Zefan <lizf@cn.fujitsu.com> Cc: Jason Baron <jbaron@redhat.com> Cc: Masami Hiramatsu <mhiramat@redhat.com> Cc: Ingo Molnar <mingo@elte.hu>		2009-09-18 07:25:44 +02:00
..
gcov	powerpc: Enable GCOV	2009-08-20 10:29:28 +10:00
irq	Merge branch 'irq-threaded-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:21:31 -07:00
power	PM: Trivial fixes	2009-09-14 20:26:59 +02:00
time	clockevent: Prevent dead lock on clockevents_lock	2009-08-19 18:15:10 +02:00
trace	tracing: Allocate the ftrace event profile buffer dynamically	2009-09-18 07:25:44 +02:00
.gitignore
acct.c	bsdacct: switch credentials for writing to the accounting file	2009-08-24 11:33:40 +10:00
async.c	async: Fix lack of boot-time console due to insufficient synchronization	2009-06-08 12:31:53 -07:00
audit_tree.c	Fix rule eviction order for AUDIT_DIR	2009-06-24 00:02:38 -04:00
audit_watch.c	Audit: clean up all op= output to include string quoting	2009-06-24 00:00:52 -04:00
audit.c	Fix rule eviction order for AUDIT_DIR	2009-06-24 00:02:38 -04:00
audit.h	Fix rule eviction order for AUDIT_DIR	2009-06-24 00:02:38 -04:00
auditfilter.c	Audit: clean up all op= output to include string quoting	2009-06-24 00:00:52 -04:00
auditsc.c	Fix rule eviction order for AUDIT_DIR	2009-06-24 00:02:38 -04:00
backtracetest.c
bounds.c
capability.c
cgroup_debug.c	debug cgroup: remove unneeded cgroup_lock	2009-04-02 19:04:54 -07:00
cgroup_freezer.c
cgroup.c	writeback: add name to backing_dev_info	2009-09-11 09:20:26 +02:00
compat.c	signals: implement sys_rt_tgsigqueueinfo	2009-04-30 19:24:24 +02:00
configs.c
cpu.c	Merge branch 'x86-pat-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-15 09:19:38 -07:00
cpuset.c	cpuset,mm: update tasks' mems_allowed in time	2009-06-16 19:47:31 -07:00
cred-internals.h
cred.c	CRED: Allow put_cred() to cope with a NULL groups list	2009-09-15 09:10:57 +10:00
delayacct.c
dma.c
exec_domain.c	Get rid of indirect include of fs_struct.h	2009-03-31 23:00:27 -04:00
exit.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:20:18 -07:00
extable.c	Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-04-05 11:04:19 -07:00
fork.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:20:18 -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: Fix compat_futex to be same as futex for REQUEUE_PI	2009-08-10 15:41:12 +02:00
futex.c	Merge branch 'core-futexes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:16:22 -07:00
groups.c	groups: move code to kernel/groups.c	2009-06-16 19:47:48 -07:00
hrtimer.c	pktgen: spin using hrtimer	2009-08-28 23:41:29 -07:00
hung_task.c	softlockup: ensure the task has been switched out once	2009-02-11 11:04:16 +01:00
itimer.c	timers: split process wide cpu clocks/timers	2009-02-05 13:04:33 +01:00
kallsyms.c	kernel/kallsyms.c: replace deprecated __initcall with device_initcall and fix whitespace	2009-06-09 22:37:52 +02:00
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	kernel/kfifo.c: replace conditional test with is_power_of_2()	2009-06-16 19:47:47 -07:00
kgdb.c	sysrq, intel_fb: fix sysrq g collision	2009-05-15 07:56:24 -05:00
kmod.c	Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:24:03 -07:00
kprobes.c	Merge branch 'linus' into tracing/core	2009-08-11 14:19:09 +02:00
ksysfs.c
kthread.c	sched: Keep kthreads at default priority	2009-09-09 17:30:06 +02:00
latencytop.c	sched, latencytop: incorporate review feedback from Andrew Morton	2009-02-11 10:18:04 +01:00
lockdep_internals.h	lockdep: BFS cleanup	2009-07-24 10:53:29 +02:00
lockdep_proc.c	Merge commit 'v2.6.31-rc8' into core/locking	2009-08-31 18:05:25 +02:00
lockdep_states.h	lockdep: move state bit definitions around	2009-02-14 23:27:59 +01:00
lockdep.c	lockdep: Remove recursion stattistics	2009-08-29 13:22:36 +02:00
Makefile	driver-core: move dma-coherent.c from kernel to driver/base	2009-09-15 09:50:47 -07:00
marker.c
module.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
mutex-debug.c
mutex-debug.h
mutex.c	Merge branch 'linus' into perfcounters/core	2009-06-11 17:55:42 +02:00
mutex.h
notifier.c
ns_cgroup.c	cgroups: relax ns_can_attach checks to allow attaching to grandchild cgroups	2009-04-02 19:04:53 -07:00
nsproxy.c	nsproxy: extract create_nsproxy()	2009-06-18 13:03:56 -07:00
panic.c	trace: stop tracer in oops_enter()	2009-07-24 15:30:45 -04:00
params.c	module_param: allow 'bool' module_params to be bool, not just int.	2009-06-12 21:46:58 +09:30
perf_counter.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
pid_namespace.c	pidns: rewrite copy_pid_ns()	2009-06-18 13:03:55 -07:00
pid.c	kmemleak: Remove alloc_bootmem annotations introduced in the past	2009-07-09 17:07:02 +01:00
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	cleanup console_print()	2009-09-14 17:41:42 -07:00
profile.c	profile: suppress warning about large allocations when profile=1 is specified	2009-07-29 19:10:36 -07:00
ptrace.c	Merge branch 'master' into next	2009-07-14 00:30:40 +10:00
rcupdate.c	rcu: Delay rcu_barrier() wait until beginning of next CPU-hotunplug operation.	2009-08-19 13:58:54 +02:00
rcutorture.c	rcu: Add synchronize_sched_expedited() torture tests	2009-07-03 10:02:29 +02:00
rcutree_plugin.h	rcu: Changes from reviews: avoid casts, fix/add warnings, improve comments	2009-08-29 15:34:40 +02:00
rcutree_trace.c	rcu: Merge preemptable-RCU functionality into hierarchical RCU	2009-08-23 10:32:40 +02:00
rcutree.c	Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:20:18 -07:00
rcutree.h	rcu: Changes from reviews: avoid casts, fix/add warnings, improve comments	2009-08-29 15:34:40 +02:00
relay.c	Merge branch 'tracing-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-04-05 11:04:19 -07:00
res_counter.c	memcg: add interface to reset limits	2009-06-18 13:03:48 -07:00
resource.c	kernel/resource.c: fix sign extension in reserve_setup()	2009-06-30 18:56:00 -07:00
rtmutex_common.h	rt_mutex: add proxy lock routines	2009-04-06 11:14:02 +02:00
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: Fix fallback sched_clock()'s offset when using jiffies	2009-05-09 10:08:19 +02:00
sched_cpupri.c	sched: Add new prio to cpupri before removing old prio	2009-08-02 14:26:09 +02:00
sched_cpupri.h	cpumask: remove cpumask_t from core	2009-03-30 22:05:17 +10:30
sched_debug.c	sched: Provide iowait counters	2009-09-02 08:44:08 +02:00
sched_fair.c	sched: Fix sched::sched_stat_wait tracepoint field	2009-09-10 20:52:54 +02:00
sched_features.h	sched: Disable NEW_FAIR_SLEEPERS for now	2009-09-10 20:34:48 +02:00
sched_idletask.c	sched, timers: move calc_load() to scheduler	2009-05-15 15:32:45 +02:00
sched_rt.c	sched: Scale down cpu_power due to RT tasks	2009-09-04 10:09:55 +02:00
sched_stats.h	sched: remove unused fields from struct rq	2009-03-24 23:16:51 +01:00
sched.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu	2009-09-15 09:39:44 -07:00
seccomp.c	x86-64: seccomp: fix 32/64 syscall hole	2009-03-02 15:41:30 -08:00
semaphore.c
signal.c	do_sigaltstack: small cleanups	2009-08-01 11:18:56 -07:00
slow-work.c	slow-work: use round_jiffies() for thread pool's cull and OOM timers	2009-06-16 19:47:49 -07:00
smp.c	Merge branch 'x86/urgent' into x86/pat	2009-08-26 17:24:28 -07:00
softirq.c	softirq: add BLOCK_IOPOLL to softirq_to_name	2009-09-17 15:53:44 -04:00
softlockup.c
spinlock.c	locking: Allow arch-inlined spinlocks	2009-08-31 18:08:50 +02:00
srcu.c
stacktrace.c
stop_machine.c	cpumask: remove cpumask_t from core	2009-03-30 22:05:17 +10:30
sys_ni.c
sys.c	groups: move code to kernel/groups.c	2009-06-16 19:47:48 -07:00
sysctl_check.c	net: add ARP notify option for devices	2009-02-01 01:04:33 -08:00
sysctl.c	block: fix linkage problem with blk_iopoll and !CONFIG_BLOCK	2009-09-15 21:53:11 +02:00
taskstats.c	genetlink: make netns aware	2009-07-12 14:03:27 -07:00
test_kprobes.c
time.c
timeconst.pl
timer.c	rcu: Simplify rcu_pending()/rcu_check_callbacks() API	2009-08-23 10:32:39 +02:00
tracepoint.c	tracing: Don't trace kernel thread syscalls	2009-08-26 21:29:52 +02:00
tsacct.c	Fix fixpoint divide exception in acct_update_integrals	2009-03-09 08:13:35 -07:00
uid16.c
up.c
user_namespace.c	Fix recursive lock in free_uid()/free_user_ns()	2009-02-27 16:26:21 -08:00
user.c	sched: delayed cleanup of user_struct	2009-06-15 21:30:23 -07:00
utsname_sysctl.c	proc_sysctl: use CONFIG_PROC_SYSCTL around ipc and utsname proc_handlers	2009-04-02 19:05:01 -07:00
utsname.c	utsns: extract creeate_uts_ns()	2009-06-18 13:03:55 -07:00
wait.c	locking, sched: Give waitqueue spinlocks their own lockdep classes	2009-08-10 14:43:09 +02:00
workqueue.c	Merge branch 'sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip	2009-09-11 13:23:18 -07:00