From patchwork Fri Feb 11 04:43:16 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Len Brown X-Patchwork-Id: 548761 Received: from smtp1.linux-foundation.org (smtp1.linux-foundation.org [140.211.169.13]) by demeter1.kernel.org (8.14.4/8.14.3) with ESMTP id p1B4kT3w027413 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL) for ; Fri, 11 Feb 2011 04:46:51 GMT Received: from daredevil.linux-foundation.org (localhost [127.0.0.1]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p1B4hk6V002404; Thu, 10 Feb 2011 20:43:47 -0800 Received: from vms173013pub.verizon.net (vms173013pub.verizon.net [206.46.173.13]) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p1B4hg9P002391 for ; Thu, 10 Feb 2011 20:43:43 -0800 Received: from localhost.localdomain ([unknown] [108.7.58.61]) by vms173013.mailsrvcs.net (Sun Java(tm) System Messaging Server 7u2-7.02 32bit (built Apr 16 2009)) with ESMTPA id <0LGF00IIBRS8MI26@vms173013.mailsrvcs.net> for linux-pm@lists.linux-foundation.org; Thu, 10 Feb 2011 22:43:28 -0600 (CST) Received: from localhost.localdomain (x980 [127.0.0.1]) by localhost.localdomain (8.14.4/8.14.4) with ESMTP id p1B4hI5J004291; Thu, 10 Feb 2011 23:43:19 -0500 Received: from localhost (lenb@localhost) by localhost.localdomain (8.14.4/8.14.4/Submit) with ESMTP id p1B4hGMp004286; Thu, 10 Feb 2011 23:43:17 -0500 X-Authentication-warning: localhost.localdomain: lenb owned process doing -bs Date: Thu, 10 Feb 2011 23:43:16 -0500 (EST) From: Len Brown X-X-Sender: lenb@x980 To: Thiago Farina In-reply-to: Message-id: References: User-Agent: Alpine 2.02 (LFD 1266 2009-07-14) MIME-version: 1.0 Received-SPF: pass (localhost is always allowed.) X-Spam-Status: No, hits=-4.005 required=5 tests=AWL, BAYES_00, OSDL_HEADER_SUBJECT_BRACKETED X-Spam-Checker-Version: SpamAssassin 3.2.4-osdl_revision__1.47__ X-MIMEDefang-Filter: lf$Revision: 1.188 $ X-Scanned-By: MIMEDefang 2.63 on 140.211.169.21 Cc: linux-pm@lists.linux-foundation.org, x86@kernel.org, linux-kernel@vger.kernel.org Subject: Re: [linux-pm] [PATCH v4] tools: create power/x86/turbostat X-BeenThere: linux-pm@lists.linux-foundation.org X-Mailman-Version: 2.1.9 Precedence: list List-Id: Linux power management List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.linux-foundation.org Errors-To: linux-pm-bounces@lists.linux-foundation.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Fri, 11 Feb 2011 04:46:51 +0000 (UTC) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 4c6983d..87d309e 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -72,7 +72,7 @@ int need_reinitialize; int num_cpus; -typedef struct per_cpu_counters { +struct counters { unsigned long long tsc; /* per thread */ unsigned long long aperf; /* per thread */ unsigned long long mperf; /* per thread */ @@ -88,13 +88,13 @@ typedef struct per_cpu_counters { int pkg; int core; int cpu; - struct per_cpu_counters *next; -} PCC; + struct counters *next; +}; -PCC *pcc_even; -PCC *pcc_odd; -PCC *pcc_delta; -PCC *pcc_average; +struct counters *cnt_even; +struct counters *cnt_odd; +struct counters *cnt_delta; +struct counters *cnt_average; struct timeval tv_even; struct timeval tv_odd; struct timeval tv_delta; @@ -125,7 +125,7 @@ unsigned long long get_msr(int cpu, off_t offset) return msr; } -void print_header() +void print_header(void) { if (show_pkg) fprintf(stderr, "pkg "); @@ -160,39 +160,39 @@ void print_header() putc('\n', stderr); } -void dump_pcc(PCC *pcc) +void dump_cnt(struct counters *cnt) { - fprintf(stderr, "package: %d ", pcc->pkg); - fprintf(stderr, "core:: %d ", pcc->core); - fprintf(stderr, "CPU: %d ", pcc->cpu); - fprintf(stderr, "TSC: %016llX\n", pcc->tsc); - fprintf(stderr, "c3: %016llX\n", pcc->c3); - fprintf(stderr, "c6: %016llX\n", pcc->c6); - fprintf(stderr, "c7: %016llX\n", pcc->c7); - fprintf(stderr, "aperf: %016llX\n", pcc->aperf); - fprintf(stderr, "pc2: %016llX\n", pcc->pc2); - fprintf(stderr, "pc3: %016llX\n", pcc->pc3); - fprintf(stderr, "pc6: %016llX\n", pcc->pc6); - fprintf(stderr, "pc7: %016llX\n", pcc->pc7); - fprintf(stderr, "msr0x%x: %016llX\n", extra_msr_offset, pcc->extra_msr); + fprintf(stderr, "package: %d ", cnt->pkg); + fprintf(stderr, "core:: %d ", cnt->core); + fprintf(stderr, "CPU: %d ", cnt->cpu); + fprintf(stderr, "TSC: %016llX\n", cnt->tsc); + fprintf(stderr, "c3: %016llX\n", cnt->c3); + fprintf(stderr, "c6: %016llX\n", cnt->c6); + fprintf(stderr, "c7: %016llX\n", cnt->c7); + fprintf(stderr, "aperf: %016llX\n", cnt->aperf); + fprintf(stderr, "pc2: %016llX\n", cnt->pc2); + fprintf(stderr, "pc3: %016llX\n", cnt->pc3); + fprintf(stderr, "pc6: %016llX\n", cnt->pc6); + fprintf(stderr, "pc7: %016llX\n", cnt->pc7); + fprintf(stderr, "msr0x%x: %016llX\n", extra_msr_offset, cnt->extra_msr); } -void dump_list(PCC *pcc) +void dump_list(struct counters *cnt) { - printf("dump_list 0x%p\n", pcc); + printf("dump_list 0x%p\n", cnt); - for (; pcc; pcc = pcc->next) - dump_pcc(pcc); + for (; cnt; cnt = cnt->next) + dump_cnt(cnt); } -void print_pcc(PCC *p) +void print_cnt(struct counters *p) { double interval_float; interval_float = tv_delta.tv_sec + tv_delta.tv_usec/1000000.0; /* topology columns, print blanks on 1st (average) line */ - if (p == pcc_average) { + if (p == cnt_average) { if (show_pkg) fprintf(stderr, " "); if (show_core) @@ -262,24 +262,24 @@ void print_pcc(PCC *p) putc('\n', stderr); } -void print_counters(PCC *cnt) +void print_counters(struct counters *counters) { - PCC *pcc; + struct counters *cnt; print_header(); if (num_cpus > 1) - print_pcc(pcc_average); + print_cnt(cnt_average); - for (pcc = cnt; pcc != NULL; pcc = pcc->next) - print_pcc(pcc); + for (cnt = counters; cnt != NULL; cnt = cnt->next) + print_cnt(cnt); } #define SUBTRACT_COUNTER(after, before, delta) (delta = (after - before), (before > after)) - -int compute_delta(PCC *after, PCC *before, PCC *delta) +int compute_delta(struct counters *after, + struct counters *before, struct counters *delta) { int errors = 0; int perf_err = 0; @@ -391,20 +391,20 @@ int compute_delta(PCC *after, PCC *before, PCC *delta) delta->extra_msr = after->extra_msr; if (errors) { fprintf(stderr, "ERROR cpu%d before:\n", before->cpu); - dump_pcc(before); + dump_cnt(before); fprintf(stderr, "ERROR cpu%d after:\n", before->cpu); - dump_pcc(after); + dump_cnt(after); errors = 0; } } return 0; } -void compute_average(PCC *delta, PCC *avg) +void compute_average(struct counters *delta, struct counters *avg) { - PCC *sum; + struct counters *sum; - sum = calloc(1, sizeof(PCC)); + sum = calloc(1, sizeof(struct counters)); if (sum == NULL) { perror("calloc sum"); exit(1); @@ -438,35 +438,34 @@ void compute_average(PCC *delta, PCC *avg) free(sum); } -void get_counters(PCC *pcc) +void get_counters(struct counters *cnt) { - for ( ; pcc; pcc = pcc->next) { - pcc->tsc = get_msr(pcc->cpu, MSR_TSC); + for ( ; cnt; cnt = cnt->next) { + cnt->tsc = get_msr(cnt->cpu, MSR_TSC); if (do_nhm_cstates) - pcc->c3 = get_msr(pcc->cpu, MSR_CORE_C3_RESIDENCY); + cnt->c3 = get_msr(cnt->cpu, MSR_CORE_C3_RESIDENCY); if (do_nhm_cstates) - pcc->c6 = get_msr(pcc->cpu, MSR_CORE_C6_RESIDENCY); + cnt->c6 = get_msr(cnt->cpu, MSR_CORE_C6_RESIDENCY); if (do_snb_cstates) - pcc->c7 = get_msr(pcc->cpu, MSR_CORE_C7_RESIDENCY); + cnt->c7 = get_msr(cnt->cpu, MSR_CORE_C7_RESIDENCY); if (has_aperf) - pcc->aperf = get_msr(pcc->cpu, MSR_APERF); + cnt->aperf = get_msr(cnt->cpu, MSR_APERF); if (has_aperf) - pcc->mperf = get_msr(pcc->cpu, MSR_MPERF); + cnt->mperf = get_msr(cnt->cpu, MSR_MPERF); if (do_snb_cstates) - pcc->pc2 = get_msr(pcc->cpu, MSR_PKG_C2_RESIDENCY); + cnt->pc2 = get_msr(cnt->cpu, MSR_PKG_C2_RESIDENCY); if (do_nhm_cstates) - pcc->pc3 = get_msr(pcc->cpu, MSR_PKG_C3_RESIDENCY); + cnt->pc3 = get_msr(cnt->cpu, MSR_PKG_C3_RESIDENCY); if (do_nhm_cstates) - pcc->pc6 = get_msr(pcc->cpu, MSR_PKG_C6_RESIDENCY); + cnt->pc6 = get_msr(cnt->cpu, MSR_PKG_C6_RESIDENCY); if (do_snb_cstates) - pcc->pc7 = get_msr(pcc->cpu, MSR_PKG_C7_RESIDENCY); + cnt->pc7 = get_msr(cnt->cpu, MSR_PKG_C7_RESIDENCY); if (extra_msr_offset) - pcc->extra_msr = get_msr(pcc->cpu, extra_msr_offset); + cnt->extra_msr = get_msr(cnt->cpu, extra_msr_offset); } } - -void print_nehalem_info() +void print_nehalem_info(void) { unsigned long long msr; unsigned int ratio; @@ -514,38 +513,38 @@ void print_nehalem_info() } -void free_counter_list(PCC *list) +void free_counter_list(struct counters *list) { - PCC *p; + struct counters *p; for (p = list; p; ) { - PCC *free_me; + struct counters *free_me; free_me = p; p = p->next; free(free_me); } - return; } void free_all_counters(void) { - free_counter_list(pcc_even); - pcc_even = NULL; + free_counter_list(cnt_even); + cnt_even = NULL; - free_counter_list(pcc_odd); - pcc_odd = NULL; + free_counter_list(cnt_odd); + cnt_odd = NULL; - free_counter_list(pcc_delta); - pcc_delta = NULL; + free_counter_list(cnt_delta); + cnt_delta = NULL; - free_counter_list(pcc_average); - pcc_average = NULL; + free_counter_list(cnt_average); + cnt_average = NULL; } -void insert_cpu_counters(PCC **list, PCC *new) +void insert_counters(struct counters **list, + struct counters *new) { - PCC *prev; + struct counters *prev; /* * list was empty @@ -594,18 +593,16 @@ void insert_cpu_counters(PCC **list, PCC *new) */ new->next = prev->next; prev->next = new; - - return; } -void alloc_new_cpu_counters(int pkg, int core, int cpu) +void alloc_new_counters(int pkg, int core, int cpu) { - PCC *new; + struct counters *new; if (verbose > 1) printf("pkg%d core%d, cpu%d\n", pkg, core, cpu); - new = (PCC *)calloc(1, sizeof(PCC)); + new = (struct counters *)calloc(1, sizeof(struct counters)); if (new == NULL) { perror("calloc"); exit(1); @@ -613,9 +610,10 @@ void alloc_new_cpu_counters(int pkg, int core, int cpu) new->pkg = pkg; new->core = core; new->cpu = cpu; - insert_cpu_counters(&pcc_odd, new); + insert_counters(&cnt_odd, new); - new = (PCC *)calloc(1, sizeof(PCC)); + new = (struct counters *)calloc(1, + sizeof(struct counters)); if (new == NULL) { perror("calloc"); exit(1); @@ -623,9 +621,9 @@ void alloc_new_cpu_counters(int pkg, int core, int cpu) new->pkg = pkg; new->core = core; new->cpu = cpu; - insert_cpu_counters(&pcc_even, new); + insert_counters(&cnt_even, new); - new = (PCC *)calloc(1, sizeof(PCC)); + new = (struct counters *)calloc(1, sizeof(struct counters)); if (new == NULL) { perror("calloc"); exit(1); @@ -633,9 +631,9 @@ void alloc_new_cpu_counters(int pkg, int core, int cpu) new->pkg = pkg; new->core = core; new->cpu = cpu; - insert_cpu_counters(&pcc_delta, new); + insert_counters(&cnt_delta, new); - new = (PCC *)calloc(1, sizeof(PCC)); + new = (struct counters *)calloc(1, sizeof(struct counters)); if (new == NULL) { perror("calloc"); exit(1); @@ -643,7 +641,7 @@ void alloc_new_cpu_counters(int pkg, int core, int cpu) new->pkg = pkg; new->core = core; new->cpu = cpu; - pcc_average = new; + cnt_average = new; } int get_physical_package_id(int cpu) @@ -719,7 +717,7 @@ void re_initialize(void) { printf("turbostat: topology changed, re-initializing.\n"); free_all_counters(); - num_cpus = for_all_cpus(alloc_new_cpu_counters); + num_cpus = for_all_cpus(alloc_new_counters); need_reinitialize = 0; printf("num_cpus is now %d\n", num_cpus); } @@ -728,7 +726,7 @@ void dummy(int pkg, int core, int cpu) { return; } /* * check to see if a cpu came on-line */ -void verify_num_cpus() +void verify_num_cpus(void) { int new_num_cpus; @@ -740,14 +738,12 @@ void verify_num_cpus() num_cpus, new_num_cpus); need_reinitialize = 1; } - - return; } void turbostat_loop() { restart: - get_counters(pcc_even); + get_counters(cnt_even); gettimeofday(&tv_even, (struct timezone *)NULL); while (1) { @@ -757,24 +753,24 @@ restart: goto restart; } sleep(interval_sec); - get_counters(pcc_odd); + get_counters(cnt_odd); gettimeofday(&tv_odd, (struct timezone *)NULL); - compute_delta(pcc_odd, pcc_even, pcc_delta); + compute_delta(cnt_odd, cnt_even, cnt_delta); timersub(&tv_odd, &tv_even, &tv_delta); - compute_average(pcc_delta, pcc_average); - print_counters(pcc_delta); + compute_average(cnt_delta, cnt_average); + print_counters(cnt_delta); if (need_reinitialize) { re_initialize(); goto restart; } sleep(interval_sec); - get_counters(pcc_even); + get_counters(cnt_even); gettimeofday(&tv_even, (struct timezone *)NULL); - compute_delta(pcc_even, pcc_odd, pcc_delta); + compute_delta(cnt_even, cnt_odd, cnt_delta); timersub(&tv_even, &tv_odd, &tv_delta); - compute_average(pcc_delta, pcc_average); - print_counters(pcc_delta); + compute_average(cnt_delta, cnt_average); + print_counters(cnt_delta); } } @@ -952,7 +948,7 @@ void turbostat_init() check_dev_msr(); check_super_user(); - num_cpus = for_all_cpus(alloc_new_cpu_counters); + num_cpus = for_all_cpus(alloc_new_counters); if (verbose) print_nehalem_info(); @@ -962,7 +958,7 @@ int fork_it(char **argv) { int retval; pid_t child_pid; - get_counters(pcc_even); + get_counters(cnt_even); gettimeofday(&tv_even, (struct timezone *)NULL); child_pid = fork(); @@ -985,14 +981,14 @@ int fork_it(char **argv) exit(1); } } - get_counters(pcc_odd); + get_counters(cnt_odd); gettimeofday(&tv_odd, (struct timezone *)NULL); - retval = compute_delta(pcc_odd, pcc_even, pcc_delta); + retval = compute_delta(cnt_odd, cnt_even, cnt_delta); timersub(&tv_odd, &tv_even, &tv_delta); - compute_average(pcc_delta, pcc_average); + compute_average(cnt_delta, cnt_average); if (!retval) - print_counters(pcc_delta); + print_counters(cnt_delta); fprintf(stderr, "%.6f sec\n", tv_delta.tv_sec + tv_delta.tv_usec/1000000.0);;