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author | Ingo Molnar <mingo@elte.hu> | 2009-09-21 10:02:48 (GMT) |
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committer | Ingo Molnar <mingo@elte.hu> | 2009-09-21 12:28:04 (GMT) |
commit | cdd6c482c9ff9c55475ee7392ec8f672eddb7be6 (patch) | |
tree | 81f98a3ab46c589792057fe2392c1e10f8ad7893 /arch/parisc | |
parent | dfc65094d0313cc48969fa60bcf33d693aeb05a7 (diff) | |
download | linux-fsl-qoriq-cdd6c482c9ff9c55475ee7392ec8f672eddb7be6.tar.xz |
perf: Do the big rename: Performance Counters -> Performance Events
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>
Diffstat (limited to 'arch/parisc')
-rw-r--r-- | arch/parisc/Kconfig | 2 | ||||
-rw-r--r-- | arch/parisc/include/asm/perf_counter.h | 7 | ||||
-rw-r--r-- | arch/parisc/include/asm/perf_event.h | 7 | ||||
-rw-r--r-- | arch/parisc/include/asm/unistd.h | 4 | ||||
-rw-r--r-- | arch/parisc/kernel/syscall_table.S | 2 |
5 files changed, 11 insertions, 11 deletions
diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig index 06f8d5b..f388dc6 100644 --- a/arch/parisc/Kconfig +++ b/arch/parisc/Kconfig @@ -16,7 +16,7 @@ config PARISC select RTC_DRV_GENERIC select INIT_ALL_POSSIBLE select BUG - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS select GENERIC_ATOMIC64 if !64BIT help The PA-RISC microprocessor is designed by Hewlett-Packard and used diff --git a/arch/parisc/include/asm/perf_counter.h b/arch/parisc/include/asm/perf_counter.h deleted file mode 100644 index dc9e829..0000000 --- a/arch/parisc/include/asm/perf_counter.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef __ASM_PARISC_PERF_COUNTER_H -#define __ASM_PARISC_PERF_COUNTER_H - -/* parisc only supports software counters through this interface. */ -static inline void set_perf_counter_pending(void) { } - -#endif /* __ASM_PARISC_PERF_COUNTER_H */ diff --git a/arch/parisc/include/asm/perf_event.h b/arch/parisc/include/asm/perf_event.h new file mode 100644 index 0000000..cc146427 --- /dev/null +++ b/arch/parisc/include/asm/perf_event.h @@ -0,0 +1,7 @@ +#ifndef __ASM_PARISC_PERF_EVENT_H +#define __ASM_PARISC_PERF_EVENT_H + +/* parisc only supports software events through this interface. */ +static inline void set_perf_event_pending(void) { } + +#endif /* __ASM_PARISC_PERF_EVENT_H */ diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h index f3d3b8b..cda1583 100644 --- a/arch/parisc/include/asm/unistd.h +++ b/arch/parisc/include/asm/unistd.h @@ -810,9 +810,9 @@ #define __NR_preadv (__NR_Linux + 315) #define __NR_pwritev (__NR_Linux + 316) #define __NR_rt_tgsigqueueinfo (__NR_Linux + 317) -#define __NR_perf_counter_open (__NR_Linux + 318) +#define __NR_perf_event_open (__NR_Linux + 318) -#define __NR_Linux_syscalls (__NR_perf_counter_open + 1) +#define __NR_Linux_syscalls (__NR_perf_event_open + 1) #define __IGNORE_select /* newselect */ diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S index cf145eb..843f423 100644 --- a/arch/parisc/kernel/syscall_table.S +++ b/arch/parisc/kernel/syscall_table.S @@ -416,7 +416,7 @@ ENTRY_COMP(preadv) /* 315 */ ENTRY_COMP(pwritev) ENTRY_COMP(rt_tgsigqueueinfo) - ENTRY_SAME(perf_counter_open) + ENTRY_SAME(perf_event_open) /* Nothing yet */ |