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cdd6c482c9
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>
301 lines
6.1 KiB
Plaintext
301 lines
6.1 KiB
Plaintext
#
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# For a description of the syntax of this configuration file,
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# see Documentation/kbuild/kconfig-language.txt.
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#
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mainmenu "Linux/PA-RISC Kernel Configuration"
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config PARISC
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def_bool y
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select HAVE_IDE
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select HAVE_OPROFILE
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select HAVE_FUNCTION_TRACER if 64BIT
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select HAVE_FUNCTION_GRAPH_TRACER if 64BIT
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select HAVE_FUNCTION_TRACE_MCOUNT_TEST if 64BIT
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select RTC_CLASS
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select RTC_DRV_GENERIC
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select INIT_ALL_POSSIBLE
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select BUG
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select HAVE_PERF_EVENTS
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select GENERIC_ATOMIC64 if !64BIT
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help
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The PA-RISC microprocessor is designed by Hewlett-Packard and used
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in many of their workstations & servers (HP9000 700 and 800 series,
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and later HP3000 series). The PA-RISC Linux project home page is
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at <http://www.parisc-linux.org/>.
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config MMU
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def_bool y
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config STACK_GROWSUP
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def_bool y
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config GENERIC_LOCKBREAK
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bool
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default y
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depends on SMP && PREEMPT
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config RWSEM_GENERIC_SPINLOCK
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def_bool y
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config RWSEM_XCHGADD_ALGORITHM
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bool
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config ARCH_HAS_ILOG2_U32
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bool
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default n
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config ARCH_HAS_ILOG2_U64
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bool
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default n
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config GENERIC_FIND_NEXT_BIT
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bool
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default y
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config GENERIC_BUG
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bool
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default y
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depends on BUG
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config GENERIC_HWEIGHT
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bool
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default y
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config GENERIC_CALIBRATE_DELAY
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bool
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default y
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config GENERIC_TIME
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bool
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default y
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config TIME_LOW_RES
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bool
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depends on SMP
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default y
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config GENERIC_HARDIRQS
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def_bool y
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config GENERIC_IRQ_PROBE
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def_bool y
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config HAVE_LATENCYTOP_SUPPORT
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def_bool y
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config IRQ_PER_CPU
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bool
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default y
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# unless you want to implement ACPI on PA-RISC ... ;-)
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config PM
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bool
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config STACKTRACE_SUPPORT
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def_bool y
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config ISA_DMA_API
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bool
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config ARCH_MAY_HAVE_PC_FDC
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bool
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depends on BROKEN
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default y
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source "init/Kconfig"
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source "kernel/Kconfig.freezer"
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menu "Processor type and features"
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choice
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prompt "Processor type"
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default PA7000
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config PA7000
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bool "PA7000/PA7100"
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---help---
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This is the processor type of your CPU. This information is
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used for optimizing purposes. In order to compile a kernel
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that can run on all 32-bit PA CPUs (albeit not optimally fast),
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you can specify "PA7000" here.
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Specifying "PA8000" here will allow you to select a 64-bit kernel
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which is required on some machines.
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config PA7100LC
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bool "PA7100LC"
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help
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Select this option for the PCX-L processor, as used in the
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712, 715/64, 715/80, 715/100, 715/100XC, 725/100, 743, 748,
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D200, D210, D300, D310 and E-class
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config PA7200
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bool "PA7200"
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help
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Select this option for the PCX-T' processor, as used in the
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C100, C110, J100, J110, J210XC, D250, D260, D350, D360,
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K100, K200, K210, K220, K400, K410 and K420
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config PA7300LC
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bool "PA7300LC"
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help
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Select this option for the PCX-L2 processor, as used in the
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744, A180, B132L, B160L, B180L, C132L, C160L, C180L,
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D220, D230, D320 and D330.
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config PA8X00
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bool "PA8000 and up"
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help
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Select this option for PCX-U to PCX-W2 processors.
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endchoice
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# Define implied options from the CPU selection here
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config PA20
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def_bool y
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depends on PA8X00
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config PA11
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def_bool y
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depends on PA7000 || PA7100LC || PA7200 || PA7300LC
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config PREFETCH
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def_bool y
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depends on PA8X00 || PA7200
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config 64BIT
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bool "64-bit kernel"
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depends on PA8X00
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help
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Enable this if you want to support 64bit kernel on PA-RISC platform.
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At the moment, only people willing to use more than 2GB of RAM,
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or having a 64bit-only capable PA-RISC machine should say Y here.
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Since there is no 64bit userland on PA-RISC, there is no point to
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enable this option otherwise. The 64bit kernel is significantly bigger
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and slower than the 32bit one.
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choice
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prompt "Kernel page size"
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default PARISC_PAGE_SIZE_4KB if !64BIT
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default PARISC_PAGE_SIZE_4KB if 64BIT
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# default PARISC_PAGE_SIZE_16KB if 64BIT
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config PARISC_PAGE_SIZE_4KB
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bool "4KB"
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help
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This lets you select the page size of the kernel. For best
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performance, a page size of 16KB is recommended. For best
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compatibility with 32bit applications, a page size of 4KB should be
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selected (the vast majority of 32bit binaries work perfectly fine
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with a larger page size).
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4KB For best 32bit compatibility
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16KB For best performance
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64KB For best performance, might give more overhead.
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If you don't know what to do, choose 4KB.
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config PARISC_PAGE_SIZE_16KB
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bool "16KB (EXPERIMENTAL)"
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depends on PA8X00 && EXPERIMENTAL
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config PARISC_PAGE_SIZE_64KB
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bool "64KB (EXPERIMENTAL)"
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depends on PA8X00 && EXPERIMENTAL
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endchoice
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config SMP
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bool "Symmetric multi-processing support"
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select USE_GENERIC_SMP_HELPERS
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---help---
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This enables support for systems with more than one CPU. If you have
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a system with only one CPU, like most personal computers, say N. If
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you have a system with more than one CPU, say Y.
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If you say N here, the kernel will run on single and multiprocessor
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machines, but will use only one CPU of a multiprocessor machine. If
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you say Y here, the kernel will run on many, but not all,
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singleprocessor machines. On a singleprocessor machine, the kernel
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will run faster if you say N here.
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See also <file:Documentation/nmi_watchdog.txt> and the SMP-HOWTO
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available at <http://www.tldp.org/docs.html#howto>.
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If you don't know what to do here, say N.
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config HOTPLUG_CPU
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bool
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default y if SMP
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select HOTPLUG
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config ARCH_SELECT_MEMORY_MODEL
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def_bool y
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depends on 64BIT
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config ARCH_DISCONTIGMEM_ENABLE
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def_bool y
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depends on 64BIT
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config ARCH_FLATMEM_ENABLE
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def_bool y
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config ARCH_DISCONTIGMEM_DEFAULT
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def_bool y
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depends on ARCH_DISCONTIGMEM_ENABLE
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config NODES_SHIFT
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int
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default "3"
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depends on NEED_MULTIPLE_NODES
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source "kernel/Kconfig.preempt"
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source "kernel/Kconfig.hz"
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source "mm/Kconfig"
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config COMPAT
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def_bool y
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depends on 64BIT
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config HPUX
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bool "Support for HP-UX binaries"
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depends on !64BIT
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config NR_CPUS
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int "Maximum number of CPUs (2-32)"
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range 2 32
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depends on SMP
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default "32"
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endmenu
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source "drivers/parisc/Kconfig"
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menu "Executable file formats"
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source "fs/Kconfig.binfmt"
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endmenu
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source "net/Kconfig"
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source "drivers/Kconfig"
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source "fs/Kconfig"
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source "arch/parisc/Kconfig.debug"
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source "security/Kconfig"
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source "crypto/Kconfig"
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source "lib/Kconfig"
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