From cdd6c482c9ff9c55475ee7392ec8f672eddb7be6 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Mon, 21 Sep 2009 12:02:48 +0200 Subject: 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_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 Acked-by: Peter Zijlstra Acked-by: Paul Mackerras Reviewed-by: Arjan van de Ven Cc: Mike Galbraith Cc: Arnaldo Carvalho de Melo Cc: Frederic Weisbecker Cc: Steven Rostedt Cc: Benjamin Herrenschmidt Cc: David Howells Cc: Kyle McMartin Cc: Martin Schwidefsky Cc: "David S. Miller" Cc: Thomas Gleixner Cc: "H. Peter Anvin" Cc: LKML-Reference: Signed-off-by: Ingo Molnar --- arch/frv/Kconfig | 2 +- arch/frv/include/asm/perf_counter.h | 17 ----------------- arch/frv/include/asm/perf_event.h | 17 +++++++++++++++++ arch/frv/include/asm/unistd.h | 2 +- arch/frv/kernel/entry.S | 2 +- arch/frv/lib/Makefile | 2 +- arch/frv/lib/perf_counter.c | 19 ------------------- arch/frv/lib/perf_event.c | 19 +++++++++++++++++++ 8 files changed, 40 insertions(+), 40 deletions(-) delete mode 100644 arch/frv/include/asm/perf_counter.h create mode 100644 arch/frv/include/asm/perf_event.h delete mode 100644 arch/frv/lib/perf_counter.c create mode 100644 arch/frv/lib/perf_event.c (limited to 'arch/frv') diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig index b86e19c9b5b0..4b5830bcbe2e 100644 --- a/arch/frv/Kconfig +++ b/arch/frv/Kconfig @@ -7,7 +7,7 @@ config FRV default y select HAVE_IDE select HAVE_ARCH_TRACEHOOK - select HAVE_PERF_COUNTERS + select HAVE_PERF_EVENTS config ZONE_DMA bool diff --git a/arch/frv/include/asm/perf_counter.h b/arch/frv/include/asm/perf_counter.h deleted file mode 100644 index ccf726e61b2e..000000000000 --- a/arch/frv/include/asm/perf_counter.h +++ /dev/null @@ -1,17 +0,0 @@ -/* FRV performance counter support - * - * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#ifndef _ASM_PERF_COUNTER_H -#define _ASM_PERF_COUNTER_H - -#define PERF_COUNTER_INDEX_OFFSET 0 - -#endif /* _ASM_PERF_COUNTER_H */ diff --git a/arch/frv/include/asm/perf_event.h b/arch/frv/include/asm/perf_event.h new file mode 100644 index 000000000000..a69e0155d146 --- /dev/null +++ b/arch/frv/include/asm/perf_event.h @@ -0,0 +1,17 @@ +/* FRV performance event support + * + * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#ifndef _ASM_PERF_EVENT_H +#define _ASM_PERF_EVENT_H + +#define PERF_EVENT_INDEX_OFFSET 0 + +#endif /* _ASM_PERF_EVENT_H */ diff --git a/arch/frv/include/asm/unistd.h b/arch/frv/include/asm/unistd.h index 4a8fb427ce0a..be6ef0f5cd42 100644 --- a/arch/frv/include/asm/unistd.h +++ b/arch/frv/include/asm/unistd.h @@ -342,7 +342,7 @@ #define __NR_preadv 333 #define __NR_pwritev 334 #define __NR_rt_tgsigqueueinfo 335 -#define __NR_perf_counter_open 336 +#define __NR_perf_event_open 336 #ifdef __KERNEL__ diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S index fde1e446b440..189397ec012a 100644 --- a/arch/frv/kernel/entry.S +++ b/arch/frv/kernel/entry.S @@ -1525,6 +1525,6 @@ sys_call_table: .long sys_preadv .long sys_pwritev .long sys_rt_tgsigqueueinfo /* 335 */ - .long sys_perf_counter_open + .long sys_perf_event_open syscall_table_size = (. - sys_call_table) diff --git a/arch/frv/lib/Makefile b/arch/frv/lib/Makefile index 0a377210c89b..f4709756d0d9 100644 --- a/arch/frv/lib/Makefile +++ b/arch/frv/lib/Makefile @@ -5,4 +5,4 @@ lib-y := \ __ashldi3.o __lshrdi3.o __muldi3.o __ashrdi3.o __negdi2.o __ucmpdi2.o \ checksum.o memcpy.o memset.o atomic-ops.o atomic64-ops.o \ - outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o perf_counter.o + outsl_ns.o outsl_sw.o insl_ns.o insl_sw.o cache.o perf_event.o diff --git a/arch/frv/lib/perf_counter.c b/arch/frv/lib/perf_counter.c deleted file mode 100644 index 2000feecd571..000000000000 --- a/arch/frv/lib/perf_counter.c +++ /dev/null @@ -1,19 +0,0 @@ -/* Performance counter handling - * - * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#include - -/* - * mark the performance counter as pending - */ -void set_perf_counter_pending(void) -{ -} diff --git a/arch/frv/lib/perf_event.c b/arch/frv/lib/perf_event.c new file mode 100644 index 000000000000..9ac5acfd2e91 --- /dev/null +++ b/arch/frv/lib/perf_event.c @@ -0,0 +1,19 @@ +/* Performance event handling + * + * Copyright (C) 2009 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ + +#include + +/* + * mark the performance event as pending + */ +void set_perf_event_pending(void) +{ +} -- cgit v1.2.3-58-ga151