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2009-09-22const: mark remaining inode_operations as constAlexey Dobriyan1-2/+2
Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2009-09-22const: mark remaining super_operations constAlexey Dobriyan1-1/+1
Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2009-09-22futex: Fix wakeup race by setting TASK_INTERRUPTIBLE before queue_me()Darren Hart1-12/+3
PI futexes do not use the same plist_node_empty() test for wakeup. It was possible for the waiter (in futex_wait_requeue_pi()) to set TASK_INTERRUPTIBLE after the waker assigned the rtmutex to the waiter. The waiter would then note the plist was not empty and call schedule(). The task would not be found by any subsequeuent futex wakeups, resulting in a userspace hang. By moving the setting of TASK_INTERRUPTIBLE to before the call to queue_me(), the race with the waker is eliminated. Since we no longer call get_user() from within queue_me(), there is no need to delay the setting of TASK_INTERRUPTIBLE until after the call to queue_me(). The FUTEX_LOCK_PI operation is not affected as futex_lock_pi() relies entirely on the rtmutex code to handle schedule() and wakeup. The requeue PI code is affected because the waiter starts as a non-PI waiter and is woken on a PI futex. Remove the crusty old comment about holding spinlocks() across get_user() as we no longer do that. Correct the locking statement with a description of why the test is performed. Signed-off-by: Darren Hart <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Dinakar Guniguntala <[email protected]> Cc: John Stultz <[email protected]> LKML-Reference: <20090922053038.8717.97838.stgit@Aeon> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22futex: Correct futex_q woken state commentaryDarren Hart1-16/+16
Use kernel-doc format to describe struct futex_q. Correct the wakeup definition to eliminate the statement about waking the waiter between the plist_del() and the q->lock_ptr = 0. Note in the comment that PI futexes have a different definition of the woken state. Signed-off-by: Darren Hart <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Dinakar Guniguntala <[email protected]> Cc: John Stultz <[email protected]> LKML-Reference: <20090922053029.8717.62798.stgit@Aeon> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22futex: Make function kernel-doc commentary consistentDarren Hart1-20/+21
Make the existing function kernel-doc consistent throughout futex.c, following Documentation/kernel-doc-nano-howto.txt as closely as possible. When unsure, at least be consistent within futex.c. Signed-off-by: Darren Hart <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Dinakar Guniguntala <[email protected]> Cc: John Stultz <[email protected]> LKML-Reference: <20090922053022.8717.13339.stgit@Aeon> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22futex: Correct queue_me and unqueue_me commentaryDarren Hart1-12/+29
The queue_me/unqueue_me commentary is oddly placed and out of date. Clean it up and correct the inaccurate bits. Signed-off-by: Darren Hart <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Dinakar Guniguntala <[email protected]> Cc: John Stultz <[email protected]> LKML-Reference: <20090922053015.8717.71713.stgit@Aeon> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22futex: Correct futex_wait_requeue_pi() commentaryDarren Hart1-3/+3
Correct various typos and formatting inconsistencies in the commentary of futex_wait_requeue_pi(). Signed-off-by: Darren Hart <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Eric Dumazet <[email protected]> Cc: Dinakar Guniguntala <[email protected]> Cc: John Stultz <[email protected]> LKML-Reference: <20090922052958.8717.21932.stgit@Aeon> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22tracing: Fix failure path in ftrace_regex_open()Li Zefan1-1/+3
Don't forget to free trace_parser if seq_open() returned failure. Signed-off-by: Li Zefan <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Steven Rostedt <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22tracing: Fix failure path in ftrace_graph_write()Li Zefan1-4/+6
Don't call trace_parser_put() on uninitialized trace_parser. Signed-off-by: Li Zefan <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Steven Rostedt <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22tracing: Check the return value of trace_get_user()Li Zefan2-9/+7
Return immediately if trace_get_user() returned failure. Signed-off-by: Li Zefan <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Steven Rostedt <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-22tracing: Fix off-by-one in trace_get_user()Li Zefan1-1/+1
Leave the last slot for the tailing '\0'. Signed-off-by: Li Zefan <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Steven Rostedt <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-21net: fix CONFIG_NET=n build on sparc64Andrew Morton1-0/+1
sparc64 allnoconfig: arch/sparc/kernel/built-in.o(.text+0x134e0): In function `sys32_recvfrom': : undefined reference to `compat_sys_recvfrom' arch/sparc/kernel/built-in.o(.text+0x134e4): In function `sys32_recvfrom': : undefined reference to `compat_sys_recvfrom' Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: David S. Miller <[email protected]>
2009-09-21Merge branch 'perfcounters-rename-for-linus' of ↵Linus Torvalds10-1263/+1262
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-rename-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: Tidy up after the big rename perf: Do the big rename: Performance Counters -> Performance Events perf_counter: Rename 'event' to event_id/hw_event perf_counter: Rename list_entry -> group_entry, counter_list -> group_list Manually resolved some fairly trivial conflicts with the tracing tree in include/trace/ftrace.h and kernel/trace/trace_syscalls.c.
2009-09-21Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds6-129/+181
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: rcu: Fix whitespace inconsistencies rcu: Fix thinko, actually initialize full tree rcu: Apply results of code inspection of kernel/rcutree_plugin.h rcu: Add WARN_ON_ONCE() consistency checks covering state transitions rcu: Fix synchronize_rcu() for TREE_PREEMPT_RCU rcu: Simplify rcu_read_unlock_special() quiescent-state accounting rcu: Add debug checks to TREE_PREEMPT_RCU for premature grace periods rcu: Kconfig help needs to say that TREE_PREEMPT_RCU scales down rcutorture: Occasionally delay readers enough to make RCU force_quiescent_state rcu: Initialize multi-level RCU grace periods holding locks rcu: Need to update rnp->gpnum if preemptable RCU is to be reliable
2009-09-21Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds5-49/+73
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: sched: Simplify sys_sched_rr_get_interval() system call sched: Fix potential NULL derference of doms_cur sched: Fix raciness in runqueue_is_locked() sched: Re-add lost cpu_allowed check to sched_fair.c::select_task_rq_fair() sched: Remove unneeded indentation in sched_fair.c::place_entity()
2009-09-21Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds10-1078/+217
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kernel/profile.c: Switch /proc/irq/prof_cpu_mask to seq_file tracing: Export trace_profile_buf symbols tracing/events: use list_for_entry_continue tracing: remove max_tracer_type_len function-graph: use ftrace_graph_funcs directly tracing: Remove markers tracing: Allocate the ftrace event profile buffer dynamically tracing: Factorize the events profile accounting
2009-09-21trivial: remove unnecessary semicolonsJoe Perches1-1/+1
Signed-off-by: Joe Perches <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2009-09-21trivial: Fix duplicated word "options" in commentUwe Kleine-Koenig1-1/+1
this was introduced in 5e0a093 (tracing: fix config options to not show when automatically selected) Signed-off-by: Uwe Kleine-Koenig <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: [email protected] Signed-off-by: Jiri Kosina <[email protected]>
2009-09-21trivial: fix typo "to to" in multiple filesAnand Gadiyar1-1/+1
Signed-off-by: Anand Gadiyar <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2009-09-21trivial: Correct print_tainted routine name in commentRobert P. J. Day1-1/+1
Signed-off-by: Robert P. J. Day <[email protected]> Signed-off-by: Jiri Kosina <[email protected]>
2009-09-21perf: Tidy up after the big renameIngo Molnar1-2/+2
- provide compatibility Kconfig entry for existing PERF_COUNTERS .config's - provide courtesy copy of old perf_counter.h, for user-space projects - small indentation fixups - fix up MAINTAINERS - fix small x86 printout fallout - fix up small PowerPC comment fallout (use 'counter' as in register) Reviewed-by: Arjan van de Ven <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-21microblaze: Enable GCOV_PROFILE_ALLMichal Simek1-1/+1
Signed-off-by: Michal Simek <[email protected]>
2009-09-21perf: Do the big rename: Performance Counters -> Performance EventsIngo Molnar10-1249/+1249
Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by: Stephane Eranian <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Acked-by: Paul Mackerras <[email protected]> Reviewed-by: Arjan van de Ven <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: David Howells <[email protected]> Cc: Kyle McMartin <[email protected]> Cc: Martin Schwidefsky <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: <[email protected]> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-21perf_counter: Rename 'event' to event_id/hw_eventIngo Molnar1-13/+13
In preparation to the renames, to avoid a namespace clash. Cc: Peter Zijlstra <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-21perf_counter: Rename list_entry -> group_entry, counter_list -> group_listIngo Molnar1-36/+35
This is in preparation of the big rename, but also makes sense in a standalone way: 'list_entry' is a bad name as we already have a list_entry() in list.h. Also, the 'counter list' is too vague, it doesnt tell us the purpose of that list. Clarify these names to show that it's all about the group hiearchy. Acked-by: Peter Zijlstra <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-21sched: Simplify sys_sched_rr_get_interval() system callPeter Williams4-16/+42
By removing the need for it to know details of scheduling classes. This allows PlugSched to define orthogonal scheduling classes. Signed-off-by: Peter Williams <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Mike Galbraith <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/jaswinder/linux-2.6Linus Torvalds1-2/+0
* git://git.kernel.org/pub/scm/linux/kernel/git/jaswinder/linux-2.6: includecheck fix: x86, cpu/common.c includecheck fix: kernel/trace, ring_buffer.c includecheck fix: include/linux, ftrace.h includecheck fix: include/linux, page_cgroup.h includecheck fix: include/linux, aio.h includecheck fix: include/drm, drm_memory.h includecheck fix: include/acpi, acpi_bus.h includecheck fix: drivers/xen, evtchn.c includecheck fix: drivers/video, vgacon.c includecheck fix: drivers/scsi, ibmvscsi.c includecheck fix: drivers/scsi, libfcoe.c includecheck fix: x86, shadow.c includecheck fix: x86, traps.c includecheck fix: um, helper.c includecheck fix: s390, sys_s390.c
2009-09-20Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6Linus Torvalds2-59/+6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty-2.6: (79 commits) USB serial: update the console driver usb-serial: straighten out serial_open usb-serial: add missing tests and debug lines usb-serial: rename subroutines usb-serial: fix termios initialization logic usb-serial: acquire references when a new tty is installed usb-serial: change logic of serial lookups usb-serial: put subroutines in logical order usb-serial: change referencing of port and serial structures tty: Char: mxser, use THRE for ASPP_OQUEUE ioctl tty: Char: mxser, add support for CP112UL uartlite: support shared interrupt lines tty: USB: serial/mct_u232, fix tty refcnt tty: riscom8, fix tty refcnt tty: riscom8, fix shutdown declaration TTY: fix typos tty: Power: fix suspend vt regression tty: vt: use printk_once tty: handle VT specific compat ioctls in vt driver n_tty: move echoctl check and clean up logic ...
2009-09-20Merge branch 'perfcounters-core-for-linus' of ↵Linus Torvalds8-486/+291
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perfcounters-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (58 commits) perf_counter: Fix perf_copy_attr() pointer arithmetic perf utils: Use a define for the maximum length of a trace event perf: Add timechart help text and add timechart to "perf help" tracing, x86, cpuidle: Move the end point of a C state in the power tracer perf utils: Be consistent about minimum text size in the svghelper perf timechart: Add "perf timechart record" perf: Add the timechart tool perf: Add a SVG helper library file tracing, perf: Convert the power tracer into an event tracer perf: Add a sample_event type to the event_union perf: Allow perf utilities to have "callback" options without arguments perf: Store trace event name/id pairs in perf.data perf: Add a timestamp to fork events sched_clock: Make it NMI safe perf_counter: Fix up swcounter throttling x86, perf_counter, bts: Optimize BTS overflow handling perf sched: Add --input=file option to builtin-sched.c perf trace: Sample timestamp and cpu when using record flag perf tools: Increase MAX_EVENT_LENGTH perf tools: Fix memory leak in read_ftrace_printk() ...
2009-09-20sched: Fix potential NULL derference of doms_curYong Zhang1-1/+1
If CONFIG_CPUMASK_OFFSTACK is enabled but doms_cur alloc failed in arch_init_sched_domains(), doms_cur will move back to fallback_doms. But this time, fallback_doms has not been initialized yet. Signed-off-by: Yong Zhang <[email protected]> Cc: [email protected] LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-20kernel/profile.c: Switch /proc/irq/prof_cpu_mask to seq_fileAlexey Dobriyan1-21/+24
Signed-off-by: Alexey Dobriyan <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-20sched: Fix raciness in runqueue_is_locked()Andrew Morton2-9/+9
runqueue_is_locked() is unavoidably racy due to a poor interface design. It does cpu = get_cpu() ret = some_perpcu_thing(cpu); put_cpu(cpu); return ret; Its return value is unreliable. Fix. Signed-off-by: Andrew Morton <[email protected]> Acked-by: Steven Rostedt <[email protected]> Cc: Peter Zijlstra <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-20tracing: Export trace_profile_buf symbolsPeter Zijlstra1-1/+4
ERROR: "trace_profile_buf_nmi" [fs/jbd2/jbd2.ko] undefined! ERROR: "trace_profile_buf" [fs/jbd2/jbd2.ko] undefined! ERROR: "trace_profile_buf_nmi" [fs/ext4/ext4.ko] undefined! ERROR: "trace_profile_buf" [fs/ext4/ext4.ko] undefined! ERROR: "trace_profile_buf_nmi" [arch/x86/kvm/kvm.ko] undefined! ERROR: "trace_profile_buf" [arch/x86/kvm/kvm.ko] undefined! Signed-off-by: Peter Zijlstra <[email protected]> Acked-by: Steven Rostedt <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <1253442878.7542.3.camel@laptop> [ fixed whitespace noise and checkpatch complaint ] Signed-off-by: Ingo Molnar <[email protected]>
2009-09-20includecheck fix: kernel/trace, ring_buffer.cJaswinder Singh Rajput1-2/+0
fix the following 'make includecheck' warning: kernel/trace/ring_buffer.c: trace.h is included more than once. Signed-off-by: Jaswinder Singh Rajput <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Sam Ravnborg <[email protected]> LKML-Reference: <[email protected]>
2009-09-19vt: remove power stuff from kernel/powerAlan Cox1-58/+5
In the past someone gratuitiously borrowed chunks of kernel internal vt code and dumped them in kernel/power. They have all sorts of deep relations with the vt code so put them in the vt tree instead Signed-off-by: Alan Cox <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2009-09-19kfifo: Use "const" definitionsAlan Cox1-1/+1
Currently kfifo cannot be used by parts of the kernel that use "const" properly as kfifo itself does not use const for passed data blocks which are indeed const. Signed-off-by: Alan Cox <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]>
2009-09-19perf_counter: Fix perf_copy_attr() pointer arithmeticIan Schram1-10/+10
There is still some weird code in per_copy_attr(). Which supposedly checks that all bytes trailing a struct are zero. It doesn't seem to get pointer arithmetic right. Since it increments an iterating pointer by sizeof(unsigned long) rather than 1. Signed-off-by: Ian Schram <[email protected]> [ v2: clean up the messy PTR_ALIGN logic as well. ] Signed-off-by: Peter Zijlstra <[email protected]> Cc: Mike Galbraith <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Arnaldo Carvalho de Melo <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: <[email protected]> # for v2.6.31.x LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19Merge branch 'tip/tracing/core' of ↵Ingo Molnar3-86/+35
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent
2009-09-19tracing/events: use list_for_entry_continueLi Zefan1-34/+15
Simplify s_next() and t_next(). Acked-by: Frederic Weisbecker <[email protected]> Signed-off-by: Li Zefan <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
2009-09-19tracing: remove max_tracer_type_lenLi Zefan1-33/+16
Limit the length of a tracer's name within 100 chars, and then we don't have to play with max_tracer_type_len. Acked-by: Frederic Weisbecker <[email protected]> Signed-off-by: Li Zefan <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
2009-09-19function-graph: use ftrace_graph_funcs directlyLi Zefan1-19/+4
No need to store ftrace_graph_funcs in file->private. Acked-by: Frederic Weisbecker <[email protected]> Signed-off-by: Li Zefan <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
2009-09-19sched: Re-add lost cpu_allowed check to sched_fair.c::select_task_rq_fair()Mike Galbraith1-1/+2
While doing some testing, I pinned mplayer, only to find it following X around like a puppy. Looking at commit c88d591, I found a cpu_allowed check that went AWOL. I plugged it back in where it looks like it needs to go, and now when I say "sit, stay!", mplayer obeys again. 'c88d591 sched: Merge select_task_rq_fair() and sched_balance_self()' accidentally dropped the check, causing wake_affine() to pull pinned tasks - put it back. [ v2: use a cheaper version from Peter ] Signed-off-by: Mike Galbraith <[email protected]> Acked-by: Peter Zijlstra <[email protected]> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19Merge branch 'tracing/core-v3' of ↵Ingo Molnar2-21/+155
git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into tracing/urgent
2009-09-19tracing, perf: Convert the power tracer into an event tracerArjan van de Ven5-239/+21
This patch converts the existing power tracer into an event tracer, so that power events (C states and frequency changes) can be tracked via "perf". This also removes the perl script that was used to demo the tracer; its functionality is being replaced entirely with timechart. Signed-off-by: Arjan van de Ven <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19perf: Add a timestamp to fork eventsArjan van de Ven1-2/+9
perf timechart needs to know when a process forked, in order to be able to visualize properly when tasks start. This patch adds a time field to the event structure, and fills it in appropriately. Signed-off-by: Arjan van de Ven <[email protected]> Acked-by: Peter Zijlstra <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Frederic Weisbecker <[email protected]> LKML-Reference: <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19Merge branch 'linus' into perfcounters/coreIngo Molnar44-1543/+2009
Merge reason: Bring in tracing changes we depend on. Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19rcu: Fix whitespace inconsistenciesPaul E. McKenney6-20/+21
Fix a number of whitespace ^Ierrors in the include/linux/rcu* and the kernel/rcu* files. Signed-off-by: Paul E. McKenney <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <[email protected]> [ did more checkpatch fixlets ] Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19rcu: Fix thinko, actually initialize full treePaul E. McKenney2-8/+7
Commit de078d8 ("rcu: Need to update rnp->gpnum if preemptable RCU is to be reliable") repeatedly and incorrectly initializes the root rcu_node structure's ->gpnum field rather than initializing the ->gpnum field of each node in the tree. Fix this. Also add an additional consistency check to catch this in the future. Signed-off-by: Paul E. McKenney <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <125329262011-git-send-email-> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19rcu: Apply results of code inspection of kernel/rcutree_plugin.hPaul E. McKenney2-26/+11
o Drop the calls to cpu_quiet() from the online/offline code. These are unnecessary, since force_quiescent_state() will clean up, and removing them simplifies the code a bit. o Add a warning to check that we don't enqueue the same blocked task twice onto the ->blocked_tasks[] lists. o Rework the phase computation in rcu_preempt_note_context_switch() to be more readable, as suggested by Josh Triplett. o Disable irqs to close a race between the scheduling clock interrupt and rcu_preempt_note_context_switch() WRT the ->rcu_read_unlock_special field. o Add comments to rnp->lock acquisition and release within rcu_read_unlock_special() noting that irqs are already disabled. Signed-off-by: Paul E. McKenney <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <12532926201851-git-send-email-> Signed-off-by: Ingo Molnar <[email protected]>
2009-09-19rcu: Add WARN_ON_ONCE() consistency checks covering state transitionsPaul E. McKenney2-10/+23
o Verify that qsmask bits stay clear through GP initialization. o Verify that cpu_quiet_msk_finish() is never invoked unless there actually is an RCU grace period in progress. o Verify that all internal-node rcu_node structures have empty blocked_tasks[] lists. o Verify that child rcu_node structure's bits remain clear after acquiring parent's lock. Signed-off-by: Paul E. McKenney <[email protected]> Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] Cc: [email protected] LKML-Reference: <12532926191947-git-send-email-> Signed-off-by: Ingo Molnar <[email protected]>
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