From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933462AbaJ2M4m (ORCPT ); Wed, 29 Oct 2014 08:56:42 -0400 Received: from mail.kernel.org ([198.145.19.201]:36852 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932773AbaJ2M4j (ORCPT ); Wed, 29 Oct 2014 08:56:39 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Wang Nan , Li Zefan , Namhyung Kim , Arnaldo Carvalho de Melo Subject: [PATCH 02/10] perf tools: Make CPUINFO_PROC an array to support different kernel versions Date: Wed, 29 Oct 2014 10:56:09 -0200 Message-Id: <1414587377-25077-3-git-send-email-acme@kernel.org> X-Mailer: git-send-email 1.9.3 In-Reply-To: <1414587377-25077-1-git-send-email-acme@kernel.org> References: <1414587377-25077-1-git-send-email-acme@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Wang Nan After kernel 3.7 (commit b4b8f770eb10a1bccaf8aa0ec1956e2dd7ed1e0a), /proc/cpuinfo replaces 'Processor' to 'model name'. This patch makes CPUINFO_PROC to an array and provides two choices for ARM, makes it compatible for different kernel version. v1 -> v2: minor changes as suggested by Namhyung Kim: - Doesn't pass @h and @evlist to __write_cpudesc; - Coding style fix. v2 -> v3: - Rebase: git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux.git perf/core Signed-off-by: Wang Nan Acked-by: Namhyung Kim Cc: Li Zefan Cc: Namhyung Kim Link: http://lkml.kernel.org/r/1414115126-7479-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/perf-sys.h | 30 +++++++++++++++--------------- tools/perf/util/header.c | 27 +++++++++++++++++++++------ 2 files changed, 36 insertions(+), 21 deletions(-) diff --git a/tools/perf/perf-sys.h b/tools/perf/perf-sys.h index 937e4324ad94..a3b13d7dc1d4 100644 --- a/tools/perf/perf-sys.h +++ b/tools/perf/perf-sys.h @@ -13,7 +13,7 @@ #define wmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory") #define rmb() asm volatile("lock; addl $0,0(%%esp)" ::: "memory") #define cpu_relax() asm volatile("rep; nop" ::: "memory"); -#define CPUINFO_PROC "model name" +#define CPUINFO_PROC {"model name"} #ifndef __NR_perf_event_open # define __NR_perf_event_open 336 #endif @@ -30,7 +30,7 @@ #define wmb() asm volatile("sfence" ::: "memory") #define rmb() asm volatile("lfence" ::: "memory") #define cpu_relax() asm volatile("rep; nop" ::: "memory"); -#define CPUINFO_PROC "model name" +#define CPUINFO_PROC {"model name"} #ifndef __NR_perf_event_open # define __NR_perf_event_open 298 #endif @@ -47,14 +47,14 @@ #define mb() asm volatile ("sync" ::: "memory") #define wmb() asm volatile ("sync" ::: "memory") #define rmb() asm volatile ("sync" ::: "memory") -#define CPUINFO_PROC "cpu" +#define CPUINFO_PROC {"cpu"} #endif #ifdef __s390__ #define mb() asm volatile("bcr 15,0" ::: "memory") #define wmb() asm volatile("bcr 15,0" ::: "memory") #define rmb() asm volatile("bcr 15,0" ::: "memory") -#define CPUINFO_PROC "vendor_id" +#define CPUINFO_PROC {"vendor_id"} #endif #ifdef __sh__ @@ -67,14 +67,14 @@ # define wmb() asm volatile("" ::: "memory") # define rmb() asm volatile("" ::: "memory") #endif -#define CPUINFO_PROC "cpu type" +#define CPUINFO_PROC {"cpu type"} #endif #ifdef __hppa__ #define mb() asm volatile("" ::: "memory") #define wmb() asm volatile("" ::: "memory") #define rmb() asm volatile("" ::: "memory") -#define CPUINFO_PROC "cpu" +#define CPUINFO_PROC {"cpu"} #endif #ifdef __sparc__ @@ -87,14 +87,14 @@ #endif #define wmb() asm volatile("":::"memory") #define rmb() asm volatile("":::"memory") -#define CPUINFO_PROC "cpu" +#define CPUINFO_PROC {"cpu"} #endif #ifdef __alpha__ #define mb() asm volatile("mb" ::: "memory") #define wmb() asm volatile("wmb" ::: "memory") #define rmb() asm volatile("mb" ::: "memory") -#define CPUINFO_PROC "cpu model" +#define CPUINFO_PROC {"cpu model"} #endif #ifdef __ia64__ @@ -102,7 +102,7 @@ #define wmb() asm volatile ("mf" ::: "memory") #define rmb() asm volatile ("mf" ::: "memory") #define cpu_relax() asm volatile ("hint @pause" ::: "memory") -#define CPUINFO_PROC "model name" +#define CPUINFO_PROC {"model name"} #endif #ifdef __arm__ @@ -113,7 +113,7 @@ #define mb() ((void(*)(void))0xffff0fa0)() #define wmb() ((void(*)(void))0xffff0fa0)() #define rmb() ((void(*)(void))0xffff0fa0)() -#define CPUINFO_PROC "Processor" +#define CPUINFO_PROC {"model name", "Processor"} #endif #ifdef __aarch64__ @@ -133,28 +133,28 @@ : "memory") #define wmb() mb() #define rmb() mb() -#define CPUINFO_PROC "cpu model" +#define CPUINFO_PROC {"cpu model"} #endif #ifdef __arc__ #define mb() asm volatile("" ::: "memory") #define wmb() asm volatile("" ::: "memory") #define rmb() asm volatile("" ::: "memory") -#define CPUINFO_PROC "Processor" +#define CPUINFO_PROC {"Processor"} #endif #ifdef __metag__ #define mb() asm volatile("" ::: "memory") #define wmb() asm volatile("" ::: "memory") #define rmb() asm volatile("" ::: "memory") -#define CPUINFO_PROC "CPU" +#define CPUINFO_PROC {"CPU"} #endif #ifdef __xtensa__ #define mb() asm volatile("memw" ::: "memory") #define wmb() asm volatile("memw" ::: "memory") #define rmb() asm volatile("" ::: "memory") -#define CPUINFO_PROC "core ID" +#define CPUINFO_PROC {"core ID"} #endif #ifdef __tile__ @@ -162,7 +162,7 @@ #define wmb() asm volatile ("mf" ::: "memory") #define rmb() asm volatile ("mf" ::: "memory") #define cpu_relax() asm volatile ("mfspr zero, PASS" ::: "memory") -#define CPUINFO_PROC "model name" +#define CPUINFO_PROC {"model name"} #endif #define barrier() asm volatile ("" ::: "memory") diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index ce0de00399da..26f5b2fe5dc8 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -579,16 +579,12 @@ static int write_version(int fd, struct perf_header *h __maybe_unused, return do_write_string(fd, perf_version_string); } -static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, - struct perf_evlist *evlist __maybe_unused) +static int __write_cpudesc(int fd, const char *cpuinfo_proc) { -#ifndef CPUINFO_PROC -#define CPUINFO_PROC NULL -#endif FILE *file; char *buf = NULL; char *s, *p; - const char *search = CPUINFO_PROC; + const char *search = cpuinfo_proc; size_t len = 0; int ret = -1; @@ -638,6 +634,25 @@ done: return ret; } +static int write_cpudesc(int fd, struct perf_header *h __maybe_unused, + struct perf_evlist *evlist __maybe_unused) +{ +#ifndef CPUINFO_PROC +#define CPUINFO_PROC {"model name", } +#endif + const char *cpuinfo_procs[] = CPUINFO_PROC; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(cpuinfo_procs); i++) { + int ret; + ret = __write_cpudesc(fd, cpuinfo_procs[i]); + if (ret >= 0) + return ret; + } + return -1; +} + + static int write_nrcpus(int fd, struct perf_header *h __maybe_unused, struct perf_evlist *evlist __maybe_unused) { -- 1.9.3