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AJvYcCWRw8cQU+/rpWFZ2AVlwnAI3cgc5bWdWhjkvWsUv7Fj6I4HCcRh4BqHBbjeaC4GCUCyMijDJXykocBpI4HD53B6@lists.infradead.org X-Gm-Message-State: AOJu0Ywm4DzBep9TUDt8ascmfUrgbWQ9wy3at+bPEqRUOHy8uK7xge+Q PjFVjLs9SDrYjx6bnGVueCO0Vw1BTgUt58PD1JpPUr7pGcv+pGvI3DnWgnxGVYQchMlTFgZ+uGs rdhTPgg== X-Google-Smtp-Source: AGHT+IGjhnQlyx60uwo4p9IkAZDT92KIybjWbIW3SuIDxmWBljHRgORYz+qbzqRTmwlk3UFalbtBGeNtiEp3 X-Received: from irogers.svl.corp.google.com ([2620:15c:2c5:11:acc7:bda:7167:18d8]) (user=irogers job=sendgmr) by 2002:a25:8382:0:b0:e2b:ce2f:787a with SMTP id 3f1490d57ef6-e3087a603e2mr94177276.3.1730996447029; Thu, 07 Nov 2024 08:20:47 -0800 (PST) Date: Thu, 7 Nov 2024 08:20:30 -0800 In-Reply-To: <20241107162035.52206-1-irogers@google.com> Message-Id: <20241107162035.52206-4-irogers@google.com> Mime-Version: 1.0 References: <20241107162035.52206-1-irogers@google.com> X-Mailer: git-send-email 2.47.0.199.ga7371fff76-goog Subject: [PATCH v2 3/8] perf header: Refactor get_cpuid to take a CPU for ARM From: Ian Rogers To: John Garry , Will Deacon , James Clark , Mike Leach , Leo Yan , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , Kan Liang , Paul Walmsley , Palmer Dabbelt , Albert Ou , Huacai Chen , Bibo Mao , Athira Rajeev , Ben Zong-You Xie , Alexandre Ghiti , Sandipan Das , Benjamin Gray , Xu Yang , Ravi Bangoria , " =?utf-8?q?Cl=C3=A9ment_Le_Goffic?= " , Yicong Yang , "Masami Hiramatsu (Google)" , Dima Kogan , "Dr. David Alan Gilbert" , linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241107_082049_231815_6F8BB000 X-CRM114-Status: GOOD ( 18.91 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org ARM BIG.little has no notion of a constant CPUID for both core types. To reflect this reality, change the get_cpuid function to also pass in a possibly unused logical cpu. If the dummy value (-1) is passed in then ARM can, as currently happens, select the first logical CPU's "CPUID". The changes to ARM getcpuid happen in a follow up change. Signed-off-by: Ian Rogers --- tools/perf/arch/arm64/util/header.c | 2 +- tools/perf/arch/loongarch/util/header.c | 2 +- tools/perf/arch/powerpc/util/header.c | 2 +- tools/perf/arch/riscv/util/header.c | 2 +- tools/perf/arch/s390/util/header.c | 2 +- tools/perf/arch/x86/util/auxtrace.c | 3 ++- tools/perf/arch/x86/util/header.c | 2 +- tools/perf/builtin-kvm.c | 4 +++- tools/perf/util/env.c | 3 ++- tools/perf/util/header.c | 9 +++++---- tools/perf/util/header.h | 2 +- 11 files changed, 19 insertions(+), 14 deletions(-) diff --git a/tools/perf/arch/arm64/util/header.c b/tools/perf/arch/arm64/util/header.c index 741df3614a09..760c21784713 100644 --- a/tools/perf/arch/arm64/util/header.c +++ b/tools/perf/arch/arm64/util/header.c @@ -50,7 +50,7 @@ static int _get_cpuid(char *buf, size_t sz, struct perf_cpu_map *cpus) return ret; } -int get_cpuid(char *buf, size_t sz) +int get_cpuid(char *buf, size_t sz, struct perf_cpu cpu __maybe_unused) { struct perf_cpu_map *cpus = perf_cpu_map__new_online_cpus(); int ret; diff --git a/tools/perf/arch/loongarch/util/header.c b/tools/perf/arch/loongarch/util/header.c index d962dff55512..f1f0b116962d 100644 --- a/tools/perf/arch/loongarch/util/header.c +++ b/tools/perf/arch/loongarch/util/header.c @@ -70,7 +70,7 @@ static char *_get_cpuid(void) return cpuid; } -int get_cpuid(char *buffer, size_t sz) +int get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu __maybe_unused) { int ret = 0; char *cpuid = _get_cpuid(); diff --git a/tools/perf/arch/powerpc/util/header.c b/tools/perf/arch/powerpc/util/header.c index 251cdbf58a4d..6d1a63a2922f 100644 --- a/tools/perf/arch/powerpc/util/header.c +++ b/tools/perf/arch/powerpc/util/header.c @@ -24,7 +24,7 @@ static bool is_compat_mode(void) } int -get_cpuid(char *buffer, size_t sz) +get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu __maybe_unused) { unsigned long pvr; int nb; diff --git a/tools/perf/arch/riscv/util/header.c b/tools/perf/arch/riscv/util/header.c index 1b29030021ee..ebac294c877f 100644 --- a/tools/perf/arch/riscv/util/header.c +++ b/tools/perf/arch/riscv/util/header.c @@ -81,7 +81,7 @@ static char *_get_cpuid(void) return cpuid; } -int get_cpuid(char *buffer, size_t sz) +int get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu __maybe_unused) { char *cpuid = _get_cpuid(); int ret = 0; diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c index 7933f6871c81..2add1a561242 100644 --- a/tools/perf/arch/s390/util/header.c +++ b/tools/perf/arch/s390/util/header.c @@ -27,7 +27,7 @@ #define SYSINFO "/proc/sysinfo" #define SRVLVL "/proc/service_levels" -int get_cpuid(char *buffer, size_t sz) +int get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu __maybe_unused) { char *cp, *line = NULL, *line2; char type[8], model[33], version[8], manufacturer[32], authorization[8]; diff --git a/tools/perf/arch/x86/util/auxtrace.c b/tools/perf/arch/x86/util/auxtrace.c index 354780ff1605..ecbf61a7eb3a 100644 --- a/tools/perf/arch/x86/util/auxtrace.c +++ b/tools/perf/arch/x86/util/auxtrace.c @@ -55,11 +55,12 @@ struct auxtrace_record *auxtrace_record__init(struct evlist *evlist, int *err) { char buffer[64]; + struct perf_cpu cpu = perf_cpu_map__min(evlist->core.all_cpus); int ret; *err = 0; - ret = get_cpuid(buffer, sizeof(buffer)); + ret = get_cpuid(buffer, sizeof(buffer), cpu); if (ret) { *err = ret; return NULL; diff --git a/tools/perf/arch/x86/util/header.c b/tools/perf/arch/x86/util/header.c index a51444a77a5f..690f86cbbb1c 100644 --- a/tools/perf/arch/x86/util/header.c +++ b/tools/perf/arch/x86/util/header.c @@ -58,7 +58,7 @@ __get_cpuid(char *buffer, size_t sz, const char *fmt) } int -get_cpuid(char *buffer, size_t sz) +get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu __maybe_unused) { return __get_cpuid(buffer, sz, "%s,%u,%u,%u$"); } diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 099ce3ebf67c..274568d712d1 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -1226,7 +1226,9 @@ static int cpu_isa_config(struct perf_kvm_stat *kvm) int err; if (kvm->live) { - err = get_cpuid(buf, sizeof(buf)); + struct perf_cpu cpu = {-1}; + + err = get_cpuid(buf, sizeof(buf), cpu); if (err != 0) { pr_err("Failed to look up CPU type: %s\n", str_error_r(err, buf, sizeof(buf))); diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c index ccb464026642..93cabdd7ff43 100644 --- a/tools/perf/util/env.c +++ b/tools/perf/util/env.c @@ -373,7 +373,8 @@ int perf_env__read_pmu_mappings(struct perf_env *env) int perf_env__read_cpuid(struct perf_env *env) { char cpuid[128]; - int err = get_cpuid(cpuid, sizeof(cpuid)); + struct perf_cpu cpu = {-1}; + int err = get_cpuid(cpuid, sizeof(cpuid), cpu); if (err) return err; diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 55c28e4377ec..60b42ddc3dac 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -856,18 +856,19 @@ int __weak strcmp_cpuid_str(const char *mapcpuid, const char *cpuid) * default get_cpuid(): nothing gets recorded * actual implementation must be in arch/$(SRCARCH)/util/header.c */ -int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused) +int __weak get_cpuid(char *buffer __maybe_unused, size_t sz __maybe_unused, + struct perf_cpu cpu __maybe_unused) { return ENOSYS; /* Not implemented */ } -static int write_cpuid(struct feat_fd *ff, - struct evlist *evlist __maybe_unused) +static int write_cpuid(struct feat_fd *ff, struct evlist *evlist) { + struct perf_cpu cpu = perf_cpu_map__min(evlist->core.all_cpus); char buffer[64]; int ret; - ret = get_cpuid(buffer, sizeof(buffer)); + ret = get_cpuid(buffer, sizeof(buffer), cpu); if (ret) return -1; diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index e91e89d22537..b77f89de12dd 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -201,7 +201,7 @@ int build_caches_for_cpu(u32 cpu, struct cpu_cache_level caches[], u32 *cntp); /* * arch specific callback */ -int get_cpuid(char *buffer, size_t sz); +int get_cpuid(char *buffer, size_t sz, struct perf_cpu cpu); char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused); int strcmp_cpuid_str(const char *s1, const char *s2);