diff options
Diffstat (limited to 'tools/power')
| -rw-r--r-- | tools/power/x86/turbostat/turbostat.c | 768 |
1 files changed, 766 insertions, 2 deletions
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 86bbea7d8e57..c9fdfb074ce9 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -44,6 +44,7 @@ #include <sys/stat.h> #include <sys/select.h> #include <sys/resource.h> +#include <sys/mman.h> #include <fcntl.h> #include <signal.h> #include <sys/time.h> @@ -1082,6 +1083,9 @@ size_t cpu_present_setsize, cpu_effective_setsize, cpu_allowed_setsize, cpu_affi #define MAX_ADDED_THREAD_COUNTERS 24 #define MAX_ADDED_CORE_COUNTERS 8 #define MAX_ADDED_PACKAGE_COUNTERS 16 +#define PMT_MAX_ADDED_THREAD_COUNTERS 24 +#define PMT_MAX_ADDED_CORE_COUNTERS 8 +#define PMT_MAX_ADDED_PACKAGE_COUNTERS 16 #define BITMASK_SIZE 32 #define ZERO_ARRAY(arr) (memset(arr, 0, sizeof(arr)) + __must_be_array(arr)) @@ -1466,6 +1470,100 @@ static struct msr_counter_arch_info msr_counter_arch_infos[] = { }, }; +/* Can be redefined when compiling, useful for testing. */ +#ifndef SYSFS_TELEM_PATH +#define SYSFS_TELEM_PATH "/sys/class/intel_pmt" +#endif + +#define PMT_COUNTER_NAME_SIZE_BYTES 16 +#define PMT_COUNTER_TYPE_NAME_SIZE_BYTES 32 + +struct pmt_mmio { + struct pmt_mmio *next; + + unsigned int guid; + unsigned int size; + + /* Base pointer to the mmaped memory. */ + void *mmio_base; + + /* + * Offset to be applied to the mmio_base + * to get the beginning of the PMT counters for given GUID. + */ + unsigned long pmt_offset; +} *pmt_mmios; + +enum pmt_datatype { + PMT_TYPE_RAW, +}; + +struct pmt_domain_info { + /* + * Pointer to the MMIO obtained by applying a counter offset + * to the mmio_base of the mmaped region for the given GUID. + * + * This is where to read the raw value of the counter from. + */ + unsigned long *pcounter; +}; + +struct pmt_counter { + struct pmt_counter *next; + + /* PMT metadata */ + char name[PMT_COUNTER_NAME_SIZE_BYTES]; + enum pmt_datatype type; + enum counter_scope scope; + unsigned int lsb; + unsigned int msb; + + /* BIC-like metadata */ + enum counter_format format; + + unsigned int num_domains; + struct pmt_domain_info *domains; +}; + +unsigned int pmt_counter_get_width(const struct pmt_counter *p) +{ + return (p->msb - p->lsb)+1; +} + +void pmt_counter_resize_(struct pmt_counter *pcounter, unsigned int new_size) +{ + struct pmt_domain_info *new_mem; + + new_mem = (struct pmt_domain_info*) reallocarray(pcounter->domains, new_size, sizeof(*pcounter->domains)); + if (!new_mem) { + fprintf(stderr, "%s: failed to allocate memory for PMT counters\n", __func__); + exit(1); + } + + /* Zero initialize just allocated memory. */ + const size_t num_new_domains = new_size - pcounter->num_domains; + + memset(&new_mem[pcounter->num_domains], 0, num_new_domains * sizeof(*pcounter->domains)); + + pcounter->num_domains = new_size; + pcounter->domains = new_mem; +} + +void pmt_counter_resize(struct pmt_counter *pcounter, unsigned int new_size) +{ + /* + * Allocate more memory ahead of time. + * + * Always allocate space for at least 8 elements + * and double the size when growing. + */ + if (new_size < 8) + new_size = 8; + new_size = MAX(new_size, pcounter->num_domains*2); + + pmt_counter_resize_(pcounter, new_size); +} + struct thread_data { struct timeval tv_begin; struct timeval tv_end; @@ -1484,6 +1582,7 @@ struct thread_data { bool is_atom; unsigned long long counter[MAX_ADDED_THREAD_COUNTERS]; unsigned long long perf_counter[MAX_ADDED_THREAD_COUNTERS]; + unsigned long long pmt_counter[PMT_MAX_ADDED_THREAD_COUNTERS]; } *thread_even, *thread_odd; struct core_data { @@ -1498,6 +1597,7 @@ struct core_data { unsigned long long core_throt_cnt; unsigned long long counter[MAX_ADDED_CORE_COUNTERS]; unsigned long long perf_counter[MAX_ADDED_CORE_COUNTERS]; + unsigned long long pmt_counter[PMT_MAX_ADDED_CORE_COUNTERS]; } *core_even, *core_odd; struct pkg_data { @@ -1532,6 +1632,7 @@ struct pkg_data { unsigned int uncore_mhz; unsigned long long counter[MAX_ADDED_PACKAGE_COUNTERS]; unsigned long long perf_counter[MAX_ADDED_PACKAGE_COUNTERS]; + unsigned long long pmt_counter[PMT_MAX_ADDED_PACKAGE_COUNTERS]; } *package_even, *package_odd; #define ODD_COUNTERS thread_odd, core_odd, package_odd @@ -1681,6 +1782,10 @@ struct sys_counters { struct perf_counter_info *perf_tp; struct perf_counter_info *perf_cp; struct perf_counter_info *perf_pp; + + struct pmt_counter *pmt_tp; + struct pmt_counter *pmt_cp; + struct pmt_counter *pmt_pp; } sys; static size_t free_msr_counters_(struct msr_counter **pp) @@ -1981,6 +2086,7 @@ void help(void) " -a, --add add a counter\n" " eg. --add msr0x10,u64,cpu,delta,MY_TSC\n" " eg. --add perf/cstate_pkg/c2-residency,package,delta,percent,perfPC2\n" + " eg. --add pmt,name=XTAL,type=raw,domain=package0,offset=0,lsb=0,msb=63,guid=0x1a067102\n" " -c, --cpu cpu-set limit output to summary plus cpu-set:\n" " {core | package | j,k,l..m,n-p }\n" " -d, --debug displays usec, Time_Of_Day_Seconds and more debugging\n" @@ -2092,6 +2198,7 @@ void print_header(char *delim) { struct msr_counter *mp; struct perf_counter_info *pp; + struct pmt_counter *ppmt; int printed = 0; if (DO_BIC(BIC_USEC)) @@ -2164,6 +2271,21 @@ void print_header(char *delim) } } + ppmt = sys.pmt_tp; + while (ppmt) { + switch(ppmt->type) { + case PMT_TYPE_RAW: + if (pmt_counter_get_width(ppmt) <= 32) + outp += sprintf(outp, "%s%10.10s", (printed++ ? delim : ""), ppmt->name); + else + outp += sprintf(outp, "%s%18.18s", (printed++ ? delim : ""), ppmt->name); + + break; + } + + ppmt = ppmt->next; + } + if (DO_BIC(BIC_CPU_c1)) outp += sprintf(outp, "%sCPU%%c1", (printed++ ? delim : "")); if (DO_BIC(BIC_CPU_c3)) @@ -2219,6 +2341,21 @@ void print_header(char *delim) } } + ppmt = sys.pmt_cp; + while (ppmt) { + switch(ppmt->type) { + case PMT_TYPE_RAW: + if (pmt_counter_get_width(ppmt) <= 32) + outp += sprintf(outp, "%s%10.10s", (printed++ ? delim : ""), ppmt->name); + else + outp += sprintf(outp, "%s%18.18s", (printed++ ? delim : ""), ppmt->name); + + break; + } + + ppmt = ppmt->next; + } + if (DO_BIC(BIC_PkgTmp)) outp += sprintf(outp, "%sPkgTmp", (printed++ ? delim : "")); @@ -2329,6 +2466,21 @@ void print_header(char *delim) } } + ppmt = sys.pmt_pp; + while (ppmt) { + switch(ppmt->type) { + case PMT_TYPE_RAW: + if (pmt_counter_get_width(ppmt) <= 32) + outp += sprintf(outp, "%s%10.10s", (printed++ ? delim : ""), ppmt->name); + else + outp += sprintf(outp, "%s%18.18s", (printed++ ? delim : ""), ppmt->name); + + break; + } + + ppmt = ppmt->next; + } + outp += sprintf(outp, "\n"); } @@ -2450,6 +2602,7 @@ int format_counters(struct thread_data *t, struct core_data *c, struct pkg_data int i; struct msr_counter *mp; struct perf_counter_info *pp; + struct pmt_counter *ppmt; char *delim = "\t"; int printed = 0; @@ -2612,6 +2765,19 @@ int format_counters(struct thread_data *t, struct core_data *c, struct pkg_data } } + for (i = 0, ppmt = sys.pmt_tp; ppmt; i++, ppmt = ppmt->next) { + switch (ppmt->type) { + case PMT_TYPE_RAW: + if (pmt_counter_get_width(ppmt) <= 32) + outp += sprintf(outp, "%s0x%08x", (printed++ ? delim : ""), + (unsigned int)t->pmt_counter[i]); + else + outp += sprintf(outp, "%s0x%016llx", (printed++ ? delim : ""), t->pmt_counter[i]); + + break; + } + } + /* C1 */ if (DO_BIC(BIC_CPU_c1)) outp += sprintf(outp, "%s%.2f", (printed++ ? delim : ""), 100.0 * t->c1 / tsc); @@ -2673,6 +2839,19 @@ int format_counters(struct thread_data *t, struct core_data *c, struct pkg_data } } + for (i = 0, ppmt = sys.pmt_cp; ppmt; i++, ppmt = ppmt->next) { + switch (ppmt->type) { + case PMT_TYPE_RAW: + if (pmt_counter_get_width(ppmt) <= 32) + outp += sprintf(outp, "%s0x%08x", (printed++ ? delim : ""), + (unsigned int)c->pmt_counter[i]); + else + outp += sprintf(outp, "%s0x%016llx", (printed++ ? delim : ""), c->pmt_counter[i]); + + break; + } + } + fmt8 = "%s%.2f"; if (DO_BIC(BIC_CorWatt) && platform->has_per_core_rapl) @@ -2842,9 +3021,23 @@ int format_counters(struct thread_data *t, struct core_data *c, struct pkg_data outp += sprintf(outp, "%s%lld", (printed++ ? delim : ""), p->perf_counter[i]); } else if (pp->format == FORMAT_PERCENT) { outp += sprintf(outp, "%s%.2f", (printed++ ? delim : ""), 100.0 * p->perf_counter[i] / tsc); - } else if (pp->type == COUNTER_K2M) + } else if (pp->type == COUNTER_K2M) { outp += sprintf(outp, "%s%d", (printed++ ? delim : ""), (unsigned int)p->perf_counter[i] / 1000); + } + } + + for (i = 0, ppmt = sys.pmt_pp; ppmt; i++, ppmt = ppmt->next) { + switch (ppmt->type) { + case PMT_TYPE_RAW: + if (pmt_counter_get_width(ppmt) <= 32) + outp += sprintf(outp, "%s0x%08x", (printed++ ? delim : ""), + (unsigned int)p->pmt_counter[i]); + else + outp += sprintf(outp, "%s0x%016llx", (printed++ ? delim : ""), p->pmt_counter[i]); + + break; + } } done: @@ -2901,6 +3094,7 @@ int delta_package(struct pkg_data *new, struct pkg_data *old) int i; struct msr_counter *mp; struct perf_counter_info *pp; + struct pmt_counter *ppmt; if (DO_BIC(BIC_Totl_c0)) old->pkg_wtd_core_c0 = new->pkg_wtd_core_c0 - old->pkg_wtd_core_c0; @@ -2970,6 +3164,13 @@ int delta_package(struct pkg_data *new, struct pkg_data *old) old->perf_counter[i] = new->perf_counter[i] - old->perf_counter[i]; } + for (i = 0, ppmt = sys.pmt_pp; ppmt; i++, ppmt = ppmt->next) { + if (ppmt->format == FORMAT_RAW) + old->pmt_counter[i] = new->pmt_counter[i]; + else + old->pmt_counter[i] = new->pmt_counter[i] - old->pmt_counter[i]; + } + return 0; } @@ -2978,6 +3179,7 @@ void delta_core(struct core_data *new, struct core_data *old) int i; struct msr_counter *mp; struct perf_counter_info *pp; + struct pmt_counter *ppmt; old->c3 = new->c3 - old->c3; old->c6 = new->c6 - old->c6; @@ -3001,6 +3203,13 @@ void delta_core(struct core_data *new, struct core_data *old) else old->perf_counter[i] = new->perf_counter[i] - old->perf_counter[i]; } + + for (i = 0, ppmt = sys.pmt_cp; ppmt; i++, ppmt = ppmt->next) { + if (ppmt->format == FORMAT_RAW) + old->pmt_counter[i] = new->pmt_counter[i]; + else + old->pmt_counter[i] = new->pmt_counter[i] - old->pmt_counter[i]; + } } int soft_c1_residency_display(int bic) @@ -3019,6 +3228,7 @@ int delta_thread(struct thread_data *new, struct thread_data *old, struct core_d int i; struct msr_counter *mp; struct perf_counter_info *pp; + struct pmt_counter *ppmt; /* we run cpuid just the 1st time, copy the results */ if (DO_BIC(BIC_APIC)) @@ -3105,6 +3315,13 @@ int delta_thread(struct thread_data *new, struct thread_data *old, struct core_d old->perf_counter[i] = new->perf_counter[i] - old->perf_counter[i]; } + for (i = 0, ppmt = sys.pmt_tp; ppmt; i++, ppmt = ppmt->next) { + if (ppmt->format == FORMAT_RAW) + old->pmt_counter[i] = new->pmt_counter[i]; + else + old->pmt_counter[i] = new->pmt_counter[i] - old->pmt_counter[i]; + } + return 0; } @@ -3211,6 +3428,10 @@ void clear_counters(struct thread_data *t, struct core_data *c, struct pkg_data memset(&t->perf_counter[0], 0, sizeof(t->perf_counter)); memset(&c->perf_counter[0], 0, sizeof(c->perf_counter)); memset(&p->perf_counter[0], 0, sizeof(p->perf_counter)); + + memset(&t->pmt_counter[0], 0, ARRAY_SIZE(t->pmt_counter)); + memset(&c->pmt_counter[0], 0, ARRAY_SIZE(c->pmt_counter)); + memset(&p->pmt_counter[0], 0, ARRAY_SIZE(p->pmt_counter)); } void rapl_counter_accumulate(struct rapl_counter *dst, const struct rapl_counter *src) @@ -3232,6 +3453,7 @@ int sum_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) int i; struct msr_counter *mp; struct perf_counter_info *pp; + struct pmt_counter *ppmt; /* copy un-changing apic_id's */ if (DO_BIC(BIC_APIC)) @@ -3268,6 +3490,10 @@ int sum_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) average.threads.perf_counter[i] += t->perf_counter[i]; } + for (i = 0, ppmt = sys.pmt_tp; ppmt; i++, ppmt = ppmt->next) { + average.threads.pmt_counter[i] += t->pmt_counter[i]; + } + /* sum per-core values only for 1st thread in core */ if (!is_cpu_first_thread_in_core(t, c, p)) return 0; @@ -3294,6 +3520,10 @@ int sum_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) average.cores.perf_counter[i] += c->perf_counter[i]; } + for (i = 0, ppmt = sys.pmt_cp; ppmt; i++, ppmt = ppmt->next) { + average.cores.pmt_counter[i] += c->pmt_counter[i]; + } + /* sum per-pkg values only for 1st core in pkg */ if (!is_cpu_first_core_in_package(t, c, p)) return 0; @@ -3353,6 +3583,10 @@ int sum_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) average.packages.perf_counter[i] += p->perf_counter[i]; } + for (i = 0, ppmt = sys.pmt_pp; ppmt; i++, ppmt = ppmt->next) { + average.packages.pmt_counter[i] += p->pmt_counter[i]; + } + return 0; } @@ -3365,6 +3599,7 @@ void compute_average(struct thread_data *t, struct core_data *c, struct pkg_data int i; struct msr_counter *mp; struct perf_counter_info *pp; + struct pmt_counter *ppmt; clear_counters(&average.threads, &average.cores, &average.packages); @@ -3465,6 +3700,16 @@ void compute_average(struct thread_data *t, struct core_data *c, struct pkg_data } average.packages.perf_counter[i] /= topo.allowed_packages; } + + for (i = 0, ppmt = sys.pmt_tp; ppmt; i++, ppmt = ppmt->next) { + average.threads.pmt_counter[i] /= topo.allowed_cpus; + } + for (i = 0, ppmt = sys.pmt_cp; ppmt; i++, ppmt = ppmt->next) { + average.cores.pmt_counter[i] /= topo.allowed_cores; + } + for (i = 0, ppmt = sys.pmt_pp; ppmt; i++, ppmt = ppmt->next) { + average.packages.pmt_counter[i] /= topo.allowed_packages; + } } static unsigned long long rdtsc(void) @@ -4120,6 +4365,32 @@ int perf_counter_info_read_values(struct perf_counter_info *pp, int cpu, unsigne return 0; } +unsigned long pmt_gen_value_mask(unsigned int lsb, unsigned int msb) +{ + unsigned long mask; + + if (msb == 63) + mask = 0xffffffffffffffff; + else + mask = ((1<<(msb+1))-1); + + mask -= (1<<lsb)-1; + + return mask; +} + +unsigned long pmt_read_counter(struct pmt_counter *ppmt, unsigned int domain_id) +{ + assert(domain_id < ppmt->num_domains); + + const unsigned long *pmmio = ppmt->domains[domain_id].pcounter; + const unsigned long value = pmmio ? *pmmio : 0; + const unsigned long value_mask = pmt_gen_value_mask(ppmt->lsb, ppmt->msb); + const unsigned long value_shift = ppmt->lsb; + + return (value & value_mask) >> value_shift; +} + /* * get_counters(...) * migrate to cpu @@ -4130,6 +4401,7 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) int cpu = t->cpu_id; unsigned long long msr; struct msr_counter *mp; + struct pmt_counter *pp; int i; int status; @@ -4164,6 +4436,9 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) if (perf_counter_info_read_values(sys.perf_tp, cpu, t->perf_counter, MAX_ADDED_THREAD_COUNTERS)) return -10; + for (i = 0, pp = sys.pmt_tp; pp; i++, pp = pp->next) + t->pmt_counter[i] = pmt_read_counter(pp, t->cpu_id); + /* collect core counters only for 1st thread in core */ if (!is_cpu_first_thread_in_core(t, c, p)) goto done; @@ -4205,6 +4480,9 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) if (perf_counter_info_read_values(sys.perf_cp, cpu, c->perf_counter, MAX_ADDED_CORE_COUNTERS)) return -10; + for (i = 0, pp = sys.pmt_cp; pp; i++, pp = pp->next) + c->pmt_counter[i] = pmt_read_counter(pp, c->core_id); + /* collect package counters only for 1st core in package */ if (!is_cpu_first_core_in_package(t, c, p)) goto done; @@ -4281,6 +4559,9 @@ int get_counters(struct thread_data *t, struct core_data *c, struct pkg_data *p) if (perf_counter_info_read_values(sys.perf_pp, cpu, p->perf_counter, MAX_ADDED_PACKAGE_COUNTERS)) return -10; + for (i = 0, pp = sys.pmt_pp; pp; i++, pp = pp->next) + p->pmt_counter[i] = pmt_read_counter(pp, p->package_id); + done: gettimeofday(&t->tv_end, (struct timezone *)NULL); @@ -8285,6 +8566,304 @@ void added_perf_counters_init(void) errx(1, "%s: %s", __func__, "package"); } +int parse_telem_info_file(int fd_dir, const char *info_filename, const char *format, unsigned long *output) +{ + int fd_telem_info; + FILE *file_telem_info; + unsigned long value; + + fd_telem_info = openat(fd_dir, info_filename, O_RDONLY); + if (fd_telem_info == -1) + return -1; + + file_telem_info = fdopen(fd_telem_info, "r"); + if (file_telem_info == NULL) { + close(fd_telem_info); + return -1; + } + + if (fscanf(file_telem_info, format, &value) != 1) { + fclose(file_telem_info); + return -1; + } + + fclose(file_telem_info); + + *output = value; + + return 0; +} + +struct pmt_mmio* pmt_mmio_open(unsigned int target_guid) +{ + DIR *dirp; + struct dirent *entry; + struct stat st; + unsigned int telem_idx; + int fd_telem_dir, fd_pmt; + unsigned long guid, size, offset; + size_t mmap_size; + void *mmio; + struct pmt_mmio *ret = NULL; + + if (stat(SYSFS_TELEM_PATH, &st) == -1) + return NULL; + + dirp = opendir(SYSFS_TELEM_PATH); + if (dirp == NULL) + return NULL; + + for (;;) { + entry = readdir(dirp); + + if (entry == NULL) + break; + + if (strcmp(entry->d_name, ".") == 0) + continue; + + if (strcmp(entry->d_name, "..") == 0) + continue; + + if (sscanf(entry->d_name, "telem%u", &telem_idx) != 1) + continue; + + if (fstatat(dirfd(dirp), entry->d_name, &st, 0) == -1) { + break; + } + + if (!S_ISDIR(st.st_mode)) + continue; + + fd_telem_dir = openat(dirfd(dirp), entry->d_name, O_RDONLY); + if (fd_telem_dir == -1) { + break; + } + + if (parse_telem_info_file(fd_telem_dir, "guid", "%lx", &guid)) { + close(fd_telem_dir); + break; + } + + if (parse_telem_info_file(fd_telem_dir, "size", "%lu", &size)) { + close(fd_telem_dir); + break; + } + + if (guid != target_guid) { + close(fd_telem_dir); + continue; + } + + if (parse_telem_info_file(fd_telem_dir, "offset", "%lu", &offset)) { + close(fd_telem_dir); + break; + } + + assert(offset == 0); + + fd_pmt = openat(fd_telem_dir, "telem", O_RDONLY); + if (fd_pmt == -1) + goto loop_cleanup_and_break; + + mmap_size = (size + 0x1000UL) & (~0x1000UL); + mmio = mmap(0, mmap_size, PROT_READ, MAP_SHARED, fd_pmt, 0); + if (mmio != MAP_FAILED) { + + if (debug) + fprintf(stderr, "%s: 0x%lx mmaped at: %p\n", __func__, guid, mmio); + + ret = calloc(1, sizeof(*ret)); + + if (!ret) { + fprintf(stderr, "%s: Failed to allocate pmt_mmio\n", __func__); + exit(1); + } + + ret->guid = guid; + ret->mmio_base = mmio; + ret->pmt_offset = offset; + ret->size = size; + + ret->next = pmt_mmios; + pmt_mmios = ret; + } + +loop_cleanup_and_break: + close(fd_pmt); + close(fd_telem_dir); + break; + } + + closedir(dirp); + + return ret; +} + +struct pmt_mmio* pmt_mmio_find(unsigned int guid) +{ + struct pmt_mmio *pmmio = pmt_mmios; + + while (pmmio) { + if (pmmio->guid == guid) + return pmmio; + + pmmio = pmmio->next; + } + + return NULL; +} + +void* pmt_get_counter_pointer(struct pmt_mmio *pmmio, unsigned long counter_offset) +{ + char *ret; + + /* Get base of mmaped PMT file. */ + ret = (char*)pmmio->mmio_base; + + /* + * Apply PMT MMIO offset to obtain beginning of the mmaped telemetry data. + * It's not guaranteed that the mmaped memory begins with the telemetry data + * - we might have to apply the offset first. + */ + ret += pmmio->pmt_offset; + + /* Apply the counter offset to get the address to the mmaped counter. */ + ret += counter_offset; + + return ret; +} + +struct pmt_mmio* pmt_add_guid(unsigned int guid) +{ + struct pmt_mmio *ret; + + ret = pmt_mmio_find(guid); + if (!ret) + ret = pmt_mmio_open(guid); + + return ret; +} + +enum pmt_open_mode { + PMT_OPEN_TRY, /* Open failure is not an error. */ + PMT_OPEN_REQUIRED, /* Open failure is a fatal error. */ +}; + +struct pmt_counter* pmt_find_counter(struct pmt_counter *pcounter, const char *name) +{ + while (pcounter) { + if (strcmp(pcounter->name, name) == 0) + break; + + pcounter = pcounter->next; + } + + return pcounter; +} + +struct pmt_counter** pmt_get_scope_root(enum counter_scope scope) +{ + switch(scope) { + case SCOPE_CPU: + return &sys.pmt_tp; + case SCOPE_CORE: + return &sys.pmt_cp; + case SCOPE_PACKAGE: + return &sys.pmt_pp; + } + + __builtin_unreachable(); +} + +void pmt_counter_add_domain(struct pmt_counter *pcounter, unsigned long *pmmio, unsigned int domain_id) +{ + /* Make sure the new domain fits. */ + if (domain_id >= pcounter->num_domains) + pmt_counter_resize(pcounter, domain_id+1); + + assert(pcounter->domains); + assert(domain_id < pcounter->num_domains); + + pcounter->domains[domain_id].pcounter = pmmio; +} + +int pmt_add_counter(unsigned int guid, const char *name, enum pmt_datatype type, + unsigned int lsb, unsigned int msb, unsigned int offset, enum counter_scope scope, + enum counter_format format, unsigned int domain_id, enum pmt_open_mode mode) +{ + struct pmt_mmio *mmio; + struct pmt_counter *pcounter; + struct pmt_counter ** const pmt_root = pmt_get_scope_root(scope); + bool new_counter = false; + int conflict = 0; + + if (lsb > msb) { + fprintf(stderr, "%s: %s: `%s` must be satisfied\n", __func__, "lsb <= msb", name); + exit(1); + } + + if (msb >= 64) { + fprintf(stderr, "%s: %s: `%s` must be satisfied\n", __func__, "msb < 64", name); + exit(1); + } + + mmio = pmt_add_guid(guid); + if (!mmio) { + if (mode != PMT_OPEN_TRY) { + fprintf(stderr, "%s: failed to map PMT MMIO for guid %x\n", __func__, guid); + exit(1); + } + + return 1; + } + + if (offset >= mmio->size) { + if (mode != PMT_OPEN_TRY) { + fprintf(stderr, "%s: offset %u outside of PMT MMIO size %u\n", __func__, offset, mmio->size); + exit(1); + } + + return 1; + } + + pcounter = pmt_find_counter(*pmt_root, name); + if (!pcounter) { + pcounter = calloc(1, sizeof(*pcounter)); + new_counter = true; + } + + if (new_counter) { + strncpy(pcounter->name, name, ARRAY_SIZE(pcounter->name)-1); + pcounter->type = type; + pcounter->scope = scope; + pcounter->lsb = lsb; + pcounter->msb = msb; + pcounter->format = format; + } else { + conflict += pcounter->type != type; + conflict += pcounter->scope != scope; + conflict += pcounter->lsb != lsb; + conflict += pcounter->msb != msb; + conflict += pcounter->format != format; + } + + if (conflict) { + fprintf(stderr, "%s: conflicting parameters for the PMT counter with the same name %s\n", + __func__, name); + exit(1); + } + + pmt_counter_add_domain(pcounter, pmt_get_counter_pointer(mmio, offset), domain_id); + + if (new_counter) { + pcounter->next = *pmt_root; + *pmt_root = pcounter; + } + + return 0; +} + void turbostat_init() { setup_all_buffers(true); @@ -8622,7 +9201,7 @@ int add_perf_counter(const char *perf_device, const char *perf_event, const char return 0; } -void parse_add_command(char *add_command) +void parse_add_command_msr(char *add_command) { int msr_num = 0; char *path = NULL; @@ -8747,6 +9326,191 @@ next: } } +bool starts_with(const char *str, const char *prefix) +{ + return strncmp(prefix, str, strlen(prefix)) == 0; +} + +void parse_add_command_pmt(char *add_command) +{ + char *name = NULL; + char *type_name = NULL; + char *format_name = NULL; + unsigned int offset; + unsigned int lsb; + unsigned int msb; + unsigned int guid; + unsigned int domain_id; + enum counter_scope scope = 0; + enum pmt_datatype type = PMT_TYPE_RAW; + enum counter_format format = FORMAT_RAW; + bool has_offset = false; + bool has_lsb = false; + bool has_msb = false; + bool has_format = true; /* Format has a default value. */ + bool has_guid = false; + bool has_scope = false; + bool has_type = true; /* Type has a default value. */ + + /* Consume the "pmt," prefix. */ + add_command = strchr(add_command, ','); + if (!add_command) { + help(); + exit(1); + } + ++add_command; + + while (add_command) { + if (starts_with(add_command, "name=")) { + name = add_command + strlen("name="); + goto next; + } + + if (starts_with(add_command, "type=")) { + type_name = add_command + strlen("type="); + goto next; + } + + if (starts_with(add_command, "domain=")) { + const size_t prefix_len = strlen("domain="); + + if (sscanf(add_command + prefix_len, "cpu%u", &domain_id) == 1) { + scope = SCOPE_CPU; + has_scope = true; + } else if (sscanf(add_command + prefix_len, "core%u", &domain_id) == 1) { + scope = SCOPE_CORE; + has_scope = true; + } else if (sscanf(add_command + prefix_len, "package%u", &domain_id) == 1) { + scope = SCOPE_PACKAGE; + has_scope = true; + } + + if (!has_scope) { + printf("%s: invalid value for scope. Expected cpu%%u, core%%u or package%%u.\n", + __func__); + exit(1); + } + + goto next; + } + + if (starts_with(add_command, "format=")) { + format_name = add_command + strlen("format="); + goto next; + } + + if (sscanf(add_command, "offset=%u", &offset) == 1) { + has_offset = true; + goto next; + } + + if (sscanf(add_command, "lsb=%u", &lsb) == 1) { + has_lsb = true; + goto next; + } + + if (sscanf(add_command, "msb=%u", &msb) == 1) { + has_msb = true; + goto next; + } + + if (sscanf(add_command, "guid=%x", &guid) == 1) { + has_guid = true; + goto next; + } + +next: + add_command = strchr(add_command, ','); + if (add_command) { + *add_command = '\0'; + add_command++; + } + } + + if (!name) { + printf("%s: missing %s\n", __func__, "name"); + exit(1); + } + + if (strlen(name) >= PMT_COUNTER_NAME_SIZE_BYTES) { + printf("%s: name has to be at most %d characters long\n", + __func__, PMT_COUNTER_NAME_SIZE_BYTES); + exit(1); + } + + if (format_name) { + has_format = false; + + if (strcmp("raw", format_name) == 0) { + format = FORMAT_RAW; + has_format = true; + } + + if (strcmp("delta", format_name) == 0) { + format = FORMAT_DELTA; + has_format = true; + } + + if (!has_format) { + fprintf(stderr, "%s: Invalid format %s. Expected raw or delta\n", __func__, format_name); + exit(1); + } + } + + if (type_name) { + has_type = false; + + if (strcmp("raw", type_name) == 0) { + type = PMT_TYPE_RAW; + has_type = true; + } + + if (!has_type) { + printf("%s: invalid %s: %s\n", __func__, "type", type_name); + exit(1); + } + } + + if (!has_offset) { + printf("%s : missing %s\n", __func__, "offset"); + exit(1); + } + + if (!has_lsb) { + printf("%s: missing %s\n", __func__, "lsb"); + exit(1); + } + + if (!has_msb) { + printf("%s: missing %s\n", __func__, "msb"); + exit(1); + } + + if (!has_guid) { + printf("%s: missing %s\n", __func__, "guid"); + exit(1); + } + + if (!has_scope) { + printf("%s: missing %s\n", __func__, "scope"); + exit(1); + } + + if (lsb > msb) { + printf("%s: lsb > msb doesn't make sense\n", __func__); + exit(1); + } + + pmt_add_counter(guid, name, type, lsb, msb, offset, scope, format, domain_id, PMT_OPEN_REQUIRED); +} + +void parse_add_command(char *add_command) +{ + if (strncmp(add_command, "pmt", strlen("pmt")) == 0) + return parse_add_command_pmt(add_command); + return parse_add_command_msr(add_command); +} + int is_deferred_add(char *name) { int i; |