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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>
69 lines
2.4 KiB
C
69 lines
2.4 KiB
C
/*
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* This file is designed to contain the BUILD_INTERRUPT specifications for
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* all of the extra named interrupt vectors used by the architecture.
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* Usually this is the Inter Process Interrupts (IPIs)
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*/
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/*
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* The following vectors are part of the Linux architecture, there
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* is no hardware IRQ pin equivalent for them, they are triggered
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* through the ICC by us (IPIs)
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*/
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#ifdef CONFIG_SMP
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BUILD_INTERRUPT(reschedule_interrupt,RESCHEDULE_VECTOR)
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BUILD_INTERRUPT(call_function_interrupt,CALL_FUNCTION_VECTOR)
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BUILD_INTERRUPT(call_function_single_interrupt,CALL_FUNCTION_SINGLE_VECTOR)
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BUILD_INTERRUPT(irq_move_cleanup_interrupt,IRQ_MOVE_CLEANUP_VECTOR)
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BUILD_INTERRUPT(reboot_interrupt,REBOOT_VECTOR)
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BUILD_INTERRUPT3(invalidate_interrupt0,INVALIDATE_TLB_VECTOR_START+0,
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smp_invalidate_interrupt)
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BUILD_INTERRUPT3(invalidate_interrupt1,INVALIDATE_TLB_VECTOR_START+1,
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smp_invalidate_interrupt)
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BUILD_INTERRUPT3(invalidate_interrupt2,INVALIDATE_TLB_VECTOR_START+2,
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smp_invalidate_interrupt)
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BUILD_INTERRUPT3(invalidate_interrupt3,INVALIDATE_TLB_VECTOR_START+3,
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smp_invalidate_interrupt)
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BUILD_INTERRUPT3(invalidate_interrupt4,INVALIDATE_TLB_VECTOR_START+4,
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smp_invalidate_interrupt)
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BUILD_INTERRUPT3(invalidate_interrupt5,INVALIDATE_TLB_VECTOR_START+5,
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smp_invalidate_interrupt)
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BUILD_INTERRUPT3(invalidate_interrupt6,INVALIDATE_TLB_VECTOR_START+6,
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smp_invalidate_interrupt)
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BUILD_INTERRUPT3(invalidate_interrupt7,INVALIDATE_TLB_VECTOR_START+7,
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smp_invalidate_interrupt)
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#endif
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BUILD_INTERRUPT(generic_interrupt, GENERIC_INTERRUPT_VECTOR)
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/*
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* every pentium local APIC has two 'local interrupts', with a
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* soft-definable vector attached to both interrupts, one of
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* which is a timer interrupt, the other one is error counter
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* overflow. Linux uses the local APIC timer interrupt to get
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* a much simpler SMP time architecture:
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*/
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#ifdef CONFIG_X86_LOCAL_APIC
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BUILD_INTERRUPT(apic_timer_interrupt,LOCAL_TIMER_VECTOR)
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BUILD_INTERRUPT(error_interrupt,ERROR_APIC_VECTOR)
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BUILD_INTERRUPT(spurious_interrupt,SPURIOUS_APIC_VECTOR)
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#ifdef CONFIG_PERF_EVENTS
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BUILD_INTERRUPT(perf_pending_interrupt, LOCAL_PENDING_VECTOR)
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#endif
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#ifdef CONFIG_X86_THERMAL_VECTOR
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BUILD_INTERRUPT(thermal_interrupt,THERMAL_APIC_VECTOR)
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#endif
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#ifdef CONFIG_X86_MCE_THRESHOLD
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BUILD_INTERRUPT(threshold_interrupt,THRESHOLD_APIC_VECTOR)
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#endif
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#ifdef CONFIG_X86_MCE
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BUILD_INTERRUPT(mce_self_interrupt,MCE_SELF_VECTOR)
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#endif
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#endif
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