| Commit message (Collapse) | Author | Age |
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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 <eranian@google.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Paul Mackerras <paulus@samba.org>
Reviewed-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: <linux-arch@vger.kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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In preparation to the renames, to avoid a namespace clash.
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Merge reason: pull in all the latest code before doing the rename.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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* 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
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fix the following 'make includecheck' warning:
arch/x86/kernel/cpu/common.c: linux/smp.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <1252087783.6385.10.camel@ht.satnam>
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fix the following 'make includecheck' warning:
arch/x86/mm/kmemcheck/shadow.c: linux/module.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247065179.4382.51.camel@ht.satnam>
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fix the following 'make includecheck' warning:
arch/x86/kernel/traps.c: asm/traps.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247065094.4382.49.camel@ht.satnam>
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fix the following 'make includecheck' warning:
arch/um/os-Linux/helper.c: linux/limits.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: jdike@addtoit.com
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247064950.4382.45.camel@ht.satnam>
Acked-by: WANG Cong <xiyou.wangcong@gmail.com>
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fix the following 'make includecheck' warning:
arch/s390/kernel/sys_s390.c: linux/syscalls.h is included more than once.
Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com>
Cc: schwidefsky@de.ibm.com
Cc: heiko.carstens@de.ibm.com
Cc: Sam Ravnborg <sam@ravnborg.org>
LKML-Reference: <1247068809.4382.111.camel@ht.satnam>
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Ingo points out that I screwed up when merging the 'timers-for-linus'
branch in commit a03fdb7612874834d6847107198712d18b5242c7.
A bit too much copy-and-pasting caused the end result to have an
extraneous 'return' in the middle of an expression. That was obviously
bogus. Blush.
Reported-by-with-patch: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
Driver-Core: extend devnode callbacks to provide permissions
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This allows subsytems to provide devtmpfs with non-default permissions
for the device node. Instead of the default mode of 0600, null, zero,
random, urandom, full, tty, ptmx now have a mode of 0666, which allows
non-privileged processes to access standard device nodes in case no
other userspace process applies the expected permissions.
This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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* 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
...
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We moved this into uart_state, now move the fields out of the separate
structure and kill it off.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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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()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (38 commits)
x86: Move get/set_wallclock to x86_platform_ops
x86: platform: Fix section annotations
x86: apic namespace cleanup
x86: Distangle ioapic and i8259
x86: Add Moorestown early detection
x86: Add hardware_subarch ID for Moorestown
x86: Add early platform detection
x86: Move tsc_init to late_time_init
x86: Move tsc_calibration to x86_init_ops
x86: Replace the now identical time_32/64.c by time.c
x86: time_32/64.c unify profile_pc
x86: Move calibrate_cpu to tsc.c
x86: Make timer setup and global variables the same in time_32/64.c
x86: Remove mca bus ifdef from timer interrupt
x86: Simplify timer_ack magic in time_32.c
x86: Prepare unification of time_32/64.c
x86: Remove do_timer hook
x86: Add timer_init to x86_init_ops
x86: Move percpu clockevents setup to x86_init_ops
x86: Move xen_post_allocator_init into xen_pagetable_setup_done
...
Fix up conflicts in arch/x86/include/asm/io_apic.h
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get/set_wallclock() have already a set of platform dependent
implementations (default, EFI, paravirt). MRST will add another
variant.
Moving them to platform ops simplifies the existing code and minimizes
the effort to integrate new variants.
Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <new-submission>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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init_IRQ() and x86_late_time_init() are missing __init annotations.
The x86 platform ops variables are annotated, but the annotation needs
to be put between the variable name and the "=" of the initializer.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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boot_cpu_physical_apicid is a global variable and used as function
argument as well. Rename the function arguments to avoid confusion.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The proposed Moorestown support patches use an extra feature flag
mechanism to make the ioapic work w/o an i8259. There is a much
simpler solution.
Most i8259 specific functions are already called dependend on the irq
number less than NR_IRQS_LEGACY. Replacing that constant by a
read_mostly variable which can be set to 0 by the platform setup code
allows us to achieve the same without any special feature flags.
That trivial change allows us to proceed with MRST w/o doing a full
blown overhaul of the ioapic code which would delay MRST unduly.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Moorestown MID devices need to be detected early in the boot process
to setup and do not call x86_default_early_setup as there is no EBDA
region to reserve.
[ Copied the minimal code from Jacobs latest MRST series ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jacob Pan <jacob.jun.pan@intel.com>
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x86 bootprotocol 2.07 has introduced hardware_subarch ID in the boot
parameters provided by FW. We use it to identify Moorestown platforms.
[ tglx: Cleanup and paravirt fix ]
Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Platforms like Moorestown require early setup and want to avoid the
call to reserve_ebda_region. The x86_init override is too late when
the MRST detection happens in setup_arch. Move the default i386
x86_init overrides and the call to reserve_ebda_region into a separate
function which is called as the default of a switch case depending on
the hardware_subarch id in boot params. This allows us to add a case
for MRST and let MRST have its own early setup function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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We do not need the TSC before late_time_init. Move the tsc_init to the
late time init code so we can also utilize HPET for calibration (which
we claimed to do but never did except in some older kernel
version). This also helps Moorestown to calibrate the TSC with the
AHBT timer which needs to be initialized in late_time_init like HPET.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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TSC calibration is modified by the vmware hypervisor and paravirt by
separate means. Moorestown wants to add its own calibration routine as
well. So make calibrate_tsc a proper x86_init_ops function and
override it by paravirt or by the early setup of the vmware
hypervisor.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Remove the redundant copy.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The code is identical except for the formatting and a useless
#ifdef. Make it the same.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Move the code where it's only user is. Also we need to look whether
this hardwired hackery might interfere with perfcounters.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The timer and timer irq setup code is identical in 32 and 64 bit. Make
it the same formatting as well. Also add the global variables under
the necessary ifdefs to both files.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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MCA_bus is constant 0 when CONFIG_MCA=n. So the compiler removes that
code w/o needing an extra #ifdef
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Let the compiler optimize the timer_ack magic away in the 32bit timer
interrupt and put the same code into time_64.c. It's optimized out for
CONFIG_X86_IO_APIC on 32bit and for 64bit because timer_ack is const 0
in both cases.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Unify the top comment and the includes.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This is a left over of the old x86 sub arch support. Remove it and
open code it like we do in time_64.c
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The timer init code is convoluted with several quirks and the paravirt
timer chooser. Figuring out which code path is actually taken is not
for the faint hearted.
Move the numaq TSC quirk to tsc_pre_init x86_init_ops function and
replace the paravirt time chooser and the remaining x86 quirk with a
simple x86_init_ops function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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paravirt overrides the setup of the default apic timers as per cpu
timers. Moorestown needs to override that as well.
Move it to x86_init_ops setup and create a separate x86_cpuinit struct
which holds the function for the secondary evtl. hotplugabble CPUs.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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We really do not need two paravirt/x86_init_ops functions which are
called in two consecutive source lines. Move the only user of
post_allocator_init into the already existing pagetable_setup_done
function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace more paravirt hackery by proper x86_init_ops.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace another obscure paravirt magic and move it to
x86_init_ops. Such a hook is also useful for embedded and special
hardware.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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ARCH_SETUP is a horrible leftover from the old arch/i386 mach support
code. It still has a lonely user in xen. Move it to x86_init_ops.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace the quirks by a simple x86_init_ops function.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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irq_init is overridden by x86_quirks and by paravirts. Unify the whole
mess and make it an unconditional x86_init_ops function which defaults
to the standard function and can be overridden by the early platform
code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace the quirk machinery by a x86_init_ops function which
defaults to the standard implementation. This is also a preparatory
patch for Moorestown support which needs to replace the default
init_ISA_irqs as well.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Replace the quirk machinery by a x86_init_ops function which defaults
to the standard implementation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Move smp_read_mpc_oem from quirks to x86_init.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The mpc_apic_id setup is handled by a x86_quirk. Make it a
x86_init_ops function with a default implementation.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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32bit and also the numaq code have special requirements on the
ioapic_id setup. Convert it to a x86_init_ops function and get rid
of the quirks and #ifdefs
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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The x86 quirkification introduced an extra ugly hackery with a
variable pointer in the mpparse code. If the pointer is initialized
then it is dereferenced and the variable set to 0 or incremented.
Create a x86_init_ops function and let the affected numaq code
hold the function. Default init is a setup noop.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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memory_setup is overridden by x86_quirks and by paravirts with weak
functions and quirks. Unify the whole mess and make it an
unconditional x86_init_ops function which defaults to the standard
function and can be overridden by the early platform code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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