Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Mathieu Desnoyers fb40bd78b0 Linux Kernel Markers: support multiple probes ... RCU style multiple probes support for the Linux Kernel Markers. Common case (one probe) is still fast and does not require dynamic allocation or a supplementary pointer dereference on the fast path. - Move preempt disable from the marker site to the callback. Since we now have an internal callback, move the preempt disable/enable to the callback instead of the marker site. Since the callback change is done asynchronously (passing from a handler that supports arguments to a handler that does not setup the arguments is no arguments are passed), we can safely update it even if it is outside the preempt disable section. - Move probe arm to probe connection. Now, a connected probe is automatically armed. Remove MARK_MAX_FORMAT_LEN, unused. This patch modifies the Linux Kernel Markers API : it removes the probe "arm/disarm" and changes the probe function prototype : it now expects a va_list * instead of a "...". If we want to have more than one probe connected to a marker at a given time (LTTng, or blktrace, ssytemtap) then we need this patch. Without it, connecting a second probe handler to a marker will fail. It allow us, for instance, to do interesting combinations : Do standard tracing with LTTng and, eventually, to compute statistics with SystemTAP, or to have a special trigger on an event that would call a systemtap script which would stop flight recorder tracing. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Christoph Hellwig <hch@infradead.org> Cc: Mike Mason <mmlnx@us.ibm.com> Cc: Dipankar Sarma <dipankar@in.ibm.com> Cc: David Smith <dsmith@redhat.com> Cc: "Paul E. McKenney" <paulmck@us.ibm.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-02-13 16:21:20 -08:00
..
irq	IRQ_NOPROBE helper functions	2008-02-08 09:22:42 -08:00
power	PM: documentation cleanups	2008-02-07 01:27:17 -05:00
time	ntp: correct inconsistent interval/tick_length usage	2008-02-10 10:48:03 +01:00
.gitignore	Update kernel/.gitignore with new auto-generated files	2008-02-09 23:27:01 -08:00
acct.c
audit.c	[AUDIT] ratelimit printk messages audit	2008-02-01 14:25:04 -05:00
audit.h
audit_tree.c
auditfilter.c	[AUDIT] make audit=0 really stop audit messages	2008-02-01 14:24:33 -05:00
auditsc.c	[AUDIT] create context if auditing was ever enabled	2008-02-01 14:24:45 -05:00
backtracetest.c	x86: add a simple backtrace test module	2008-01-30 13:33:08 +01:00
capability.c	Add 64-bit capability support to the kernel	2008-02-05 09:44:20 -08:00
cgroup.c	Handle pid namespaces in cgroups code	2008-02-07 08:42:22 -08:00
cgroup_debug.c
compat.c	hrtimer: don't modify restart_block->fn in restart functions	2008-02-10 10:48:03 +01:00
configs.c
cpu.c	cpu: fix section mismatch warnings for enable_nonboot_cpus	2008-02-08 09:22:41 -08:00
cpuset.c	proc: seqfile convert proc_pid_status to properly handle pid namespaces	2008-02-08 09:22:24 -08:00
delayacct.c
dma.c
exec_domain.c
exit.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
extable.c	module: Don't report discarded init pages as kernel text.	2008-01-29 17:13:18 +11:00
fork.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
futex.c	futex: Add bitset conditional wait/wakeup functionality	2008-02-01 17:45:14 +01:00
futex_compat.c	futex: Add bitset conditional wait/wakeup functionality	2008-02-01 17:45:14 +01:00
hrtimer.c	hrtimer: don't modify restart_block->fn in restart functions	2008-02-10 10:48:03 +01:00
itimer.c	ITIMER_REAL: convert to use struct pid	2008-02-08 09:22:29 -08:00
kallsyms.c	remove support for un-needed _extratext section	2008-02-06 10:41:01 -08:00
Kconfig.hz	sched: high-res preemption tick	2008-01-25 21:08:29 +01:00
Kconfig.preempt	sched: remove the !PREEMPT_BKL code	2008-01-25 21:08:33 +01:00
kexec.c	vmcoreinfo: add "VMCOREINFO_" to all the call for vmcoreinfo_append_str()	2008-02-07 08:42:25 -08:00
kfifo.c
kmod.c
kprobes.c	kprobes: kretprobe user entry-handler	2008-02-06 10:41:11 -08:00
ksysfs.c
kthread.c	sched: fix, always create kernel threads with normal priority	2008-01-25 21:08:33 +01:00
latencytop.c	sched: latencytop support	2008-01-25 21:08:34 +01:00
lockdep.c
lockdep_internals.h
lockdep_proc.c
Makefile	avoid overflows in kernel/time.c	2008-02-08 09:22:39 -08:00
marker.c	Linux Kernel Markers: support multiple probes	2008-02-13 16:21:20 -08:00
module.c	Linux Kernel Markers: support multiple probes	2008-02-13 16:21:20 -08:00
mutex-debug.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
mutex-debug.h
mutex.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
mutex.h
notifier.c	kernel/notifier.c should #include <linux/reboot.h>	2008-02-06 10:41:02 -08:00
ns_cgroup.c
nsproxy.c	namespaces: move the IPC namespace under IPC_NS option	2008-02-08 09:22:23 -08:00
panic.c	ACPI: Taint kernel on ACPI table override (format corrected)	2008-02-06 22:07:51 -05:00
params.c	Add new string functions strict_strto* and convert kernel params to use them	2008-02-08 09:22:41 -08:00
pid.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
pid_namespace.c	namespaces: cleanup the code managed with PID_NS option	2008-02-08 09:22:23 -08:00
pm_qos_params.c	pm qos infrastructure and interface	2008-02-05 09:44:22 -08:00
posix-cpu-timers.c	Use find_task_by_vpid in posix timers	2008-02-08 09:22:41 -08:00
posix-timers.c	hrtimer: fix *rmtp handling in hrtimer_nanosleep()	2008-02-10 10:48:03 +01:00
printk.c	printk_ratelimit() functions should use CONFIG_PRINTK	2008-02-08 09:22:39 -08:00
profile.c	Nuke a duplicate include from profile.c	2008-02-08 09:22:34 -08:00
ptrace.c	ptrace_check_attach: remove unneeded ->signal != NULL check	2008-02-08 09:22:26 -08:00
rcuclassic.c	Preempt-RCU: implementation	2008-01-25 21:08:24 +01:00
rcupdate.c	rcupdate: fix comment	2008-02-13 16:21:18 -08:00
rcupreempt.c	Preempt-RCU: CPU Hotplug handling	2008-01-25 21:08:25 +01:00
rcupreempt_trace.c	Preempt-RCU: implementation	2008-01-25 21:08:24 +01:00
rcutorture.c
relay.c	relay: nopage	2008-02-06 10:41:07 -08:00
res_counter.c	Memory controller improve user interface	2008-02-07 08:42:18 -08:00
resource.c	[POWERPC] Add arch-specific walk_memory_remove() for 64-bit powerpc	2008-02-08 19:52:48 +11:00
rtmutex-debug.c	Don't operate with pid_t in rtmutex tester	2008-02-08 09:22:41 -08:00
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c	hrtimer: more hrtimer_init_sleeper() fallout.	2008-02-13 15:45:36 +01:00
rtmutex.h
rtmutex_common.h	Don't operate with pid_t in rtmutex tester	2008-02-08 09:22:41 -08:00
rwsem.c
sched.c	sched: rt-group: refure unrunnable tasks	2008-02-13 15:45:40 +01:00
sched_debug.c	sched: keep total / count stats in addition to the max for	2008-01-25 21:08:35 +01:00
sched_fair.c	sched: let +nice tasks have smaller impact	2008-01-31 22:45:22 +01:00
sched_idletask.c	sched: high-res preemption tick	2008-01-25 21:08:29 +01:00
sched_rt.c	sched: rt-group: make rt groups scheduling configurable	2008-02-13 15:45:40 +01:00
sched_stats.h
seccomp.c
signal.c	remove final fastcall users	2008-02-13 16:21:18 -08:00
softirq.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
softlockup.c	debug: softlockup looping fix	2008-02-02 14:27:45 +11:00
spinlock.c	spinlock: lockbreak cleanup	2008-01-30 13:31:20 +01:00
srcu.c	make srcu_readers_active() static	2008-02-06 10:41:02 -08:00
stacktrace.c
stop_machine.c	stopmachine: semaphore to mutex	2008-02-06 10:41:08 -08:00
sys.c	Pidns: make full use of xxx_vnr() calls	2008-02-08 09:22:29 -08:00
sys_ni.c	timerfd: new timerfd API	2008-02-05 09:44:07 -08:00
sysctl.c	hugetlb: fix overcommit locking	2008-02-13 16:21:18 -08:00
sysctl_check.c	constify tables in kernel/sysctl_check.c	2008-02-08 09:22:31 -08:00
taskstats.c
test_kprobes.c	kprobes: kretprobe user entry-handler	2008-02-06 10:41:11 -08:00
time.c	avoid overflows in kernel/time.c	2008-02-08 09:22:39 -08:00
timeconst.pl	timeconst.pl: correct reversal of USEC_TO_HZ and HZ_TO_USEC	2008-02-12 14:29:26 -08:00
timer.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
tsacct.c
uid16.c
user.c	sched: rt-group: make rt groups scheduling configurable	2008-02-13 15:45:40 +01:00
user_namespace.c	namespaces: cleanup the code managed with the USER_NS option	2008-02-08 09:22:23 -08:00
utsname.c
utsname_sysctl.c
wait.c	kernel: remove fastcall in kernel/*	2008-02-08 09:22:31 -08:00
workqueue.c	workqueue: make delayed_work_timer_fn() static	2008-02-08 09:22:37 -08:00