From: Mathieu Desnoyers Date: Fri, 22 Jul 2011 18:38:58 +0000 (-0400) Subject: Update handling of perf counters in add-context X-Git-Tag: v2.0-pre2~5 X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=b13d56d78992e27e684fec7aef527670fc238e9b;p=lttng-tools.git Update handling of perf counters in add-context Signed-off-by: Mathieu Desnoyers --- diff --git a/lttng/commands/add_context.c b/lttng/commands/add_context.c index e31157d3d..cb0c08741 100644 --- a/lttng/commands/add_context.c +++ b/lttng/commands/add_context.c @@ -32,14 +32,14 @@ #include "../conf.h" #include "../utils.h" +#define PRINT_LINE_LEN 80 + static char *opt_event_name; static char *opt_channel_name; static char *opt_session_name; static int *opt_kernel; static int opt_pid_all; static int opt_userspace; -static char *opt_perf_type; -static char *opt_perf_id; static pid_t opt_pid; enum { @@ -69,16 +69,19 @@ enum context_type { enum perf_type { PERF_TYPE_HARDWARE = 0, PERF_TYPE_SOFTWARE = 1, + PERF_TYPE_HW_CACHE = 3, }; enum perf_count_hard { - PERF_COUNT_HW_CPU_CYCLES = 0, - PERF_COUNT_HW_INSTRUCTIONS = 1, - PERF_COUNT_HW_CACHE_REFERENCES = 2, - PERF_COUNT_HW_CACHE_MISSES = 3, - PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, - PERF_COUNT_HW_BRANCH_MISSES = 5, - PERF_COUNT_HW_BUS_CYCLES = 6, + PERF_COUNT_HW_CPU_CYCLES = 0, + PERF_COUNT_HW_INSTRUCTIONS = 1, + PERF_COUNT_HW_CACHE_REFERENCES = 2, + PERF_COUNT_HW_CACHE_MISSES = 3, + PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4, + PERF_COUNT_HW_BRANCH_MISSES = 5, + PERF_COUNT_HW_BUS_CYCLES = 6, + PERF_COUNT_HW_STALLED_CYCLES_FRONTEND = 7, + PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8, }; enum perf_count_soft { @@ -93,6 +96,39 @@ enum perf_count_soft { PERF_COUNT_SW_EMULATION_FAULTS = 8, }; +/* + * Generalized hardware cache events: + * + * { L1-D, L1-I, LLC, ITLB, DTLB, BPU } x + * { read, write, prefetch } x + * { accesses, misses } + */ +enum perf_hw_cache_id { + PERF_COUNT_HW_CACHE_L1D = 0, + PERF_COUNT_HW_CACHE_L1I = 1, + PERF_COUNT_HW_CACHE_LL = 2, + PERF_COUNT_HW_CACHE_DTLB = 3, + PERF_COUNT_HW_CACHE_ITLB = 4, + PERF_COUNT_HW_CACHE_BPU = 5, + + PERF_COUNT_HW_CACHE_MAX, /* non-ABI */ +}; + +enum perf_hw_cache_op_id { + PERF_COUNT_HW_CACHE_OP_READ = 0, + PERF_COUNT_HW_CACHE_OP_WRITE = 1, + PERF_COUNT_HW_CACHE_OP_PREFETCH = 2, + + PERF_COUNT_HW_CACHE_OP_MAX, /* non-ABI */ +}; + +enum perf_hw_cache_op_result_id { + PERF_COUNT_HW_CACHE_RESULT_ACCESS = 0, + PERF_COUNT_HW_CACHE_RESULT_MISS = 1, + + PERF_COUNT_HW_CACHE_RESULT_MAX, /* non-ABI */ +}; + static struct poptOption long_options[] = { /* longName, shortName, argInfo, argPtr, value, descrip, argDesc */ {"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0}, @@ -104,81 +140,112 @@ static struct poptOption long_options[] = { {"all", 0, POPT_ARG_VAL, &opt_pid_all, 1, 0, 0}, {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0}, {"type", 't', POPT_ARG_STRING, 0, OPT_TYPE, 0, 0}, - {"perf-type", 0, POPT_ARG_STRING, &opt_perf_type, 0, 0, 0}, - {"perf-id", 0, POPT_ARG_STRING, &opt_perf_id, 0, 0, 0}, {0, 0, 0, 0, 0, 0, 0} }; /* - * Context type for command line option parsing. + * Context options */ -struct ctx_type { - int type; - struct cds_list_head list; -}; +#define PERF_HW(opt, name) \ + { \ + "perf:" #opt, CONTEXT_PERF_COUNTER, \ + .u.perf = { PERF_TYPE_HARDWARE, PERF_COUNT_HW_##name, },\ + } -/* - * Perf counter type - */ -static struct ctx_perf_type { - enum perf_type value; - char *symbol; -} ctx_perf_type[] = { - { PERF_TYPE_HARDWARE, "hw" }, - { PERF_TYPE_SOFTWARE, "sw" }, -}; +#define PERF_SW(opt, name) \ + { \ + "perf:" #opt, CONTEXT_PERF_COUNTER, \ + .u.perf = { PERF_TYPE_SOFTWARE, PERF_COUNT_SW_##name, },\ + } -/* - * Perf counter IDs - */ -static struct ctx_perf { - enum perf_type type; - union { - enum perf_count_hard hard; - enum perf_count_soft soft; - } id; +#define _PERF_HW_CACHE(optstr, name, op, result) \ + { \ + "perf:" optstr, CONTEXT_PERF_COUNTER, \ + .u.perf = { \ + PERF_TYPE_HW_CACHE, \ + (uint64_t) PERF_COUNT_HW_CACHE_##name \ + * (uint64_t) PERF_COUNT_HW_CACHE_OP_##op \ + * (uint64_t) PERF_COUNT_HW_CACHE_RESULT_##result, \ + }, \ + } + +#define PERF_HW_CACHE(opt, name) \ + _PERF_HW_CACHE(#opt "-loads", name, READ, ACCESS), \ + _PERF_HW_CACHE(#opt "-load-misses", name, READ, MISS), \ + _PERF_HW_CACHE(#opt "-stores", name, WRITE, ACCESS), \ + _PERF_HW_CACHE(#opt "-store-misses", name, WRITE, MISS), \ + _PERF_HW_CACHE(#opt "-prefetches", name, PREFETCH, ACCESS), \ + _PERF_HW_CACHE(#opt "-prefetch-misses", name, PREFETCH, MISS) \ + +static +const struct ctx_opts { char *symbol; -} ctx_perf[] = { - /* Hardware counter */ - { PERF_TYPE_HARDWARE, .id.hard = PERF_COUNT_HW_CPU_CYCLES, "cpu_cycles" }, - { PERF_TYPE_HARDWARE, .id.hard = PERF_COUNT_HW_INSTRUCTIONS, "instr" }, - { PERF_TYPE_HARDWARE, .id.hard = PERF_COUNT_HW_CACHE_REFERENCES, "cache_refs" }, - { PERF_TYPE_HARDWARE, .id.hard = PERF_COUNT_HW_CACHE_MISSES, "cache_miss" }, - { PERF_TYPE_HARDWARE, .id.hard = PERF_COUNT_HW_BRANCH_INSTRUCTIONS, "branch_instr" }, - { PERF_TYPE_HARDWARE, .id.hard = PERF_COUNT_HW_BRANCH_MISSES, "branch_miss" }, - { PERF_TYPE_HARDWARE, .id.hard = PERF_COUNT_HW_BUS_CYCLES, "bus_cycles" }, - /* Sofware counter */ - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_CPU_CLOCK, "cpu_clock" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_TASK_CLOCK, "task_clock" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_PAGE_FAULTS, "page_faults" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_CONTEXT_SWITCHES, "ctx_switches" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_CPU_MIGRATIONS, "cpu_migration" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_PAGE_FAULTS_MIN, "page_faults_minor" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_PAGE_FAULTS_MAJ, "page_faults_major" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_ALIGNMENT_FAULTS, "align_faults" }, - { PERF_TYPE_SOFTWARE, .id.soft = PERF_COUNT_SW_EMULATION_FAULTS, "emu_faults" }, - /* Closure */ - { -1, .id.hard = -1 , NULL }, + enum context_type ctx_type; + union { + struct { + uint32_t type; + uint64_t config; + } perf; + } u; +} ctx_opts[] = { + { "pid", CONTEXT_PID }, + { "comm", CONTEXT_COMM }, + { "prio", CONTEXT_PRIO }, + { "nice", CONTEXT_NICE }, + { "vpid", CONTEXT_VPID }, + { "tid", CONTEXT_TID }, + { "vtid", CONTEXT_VTID }, + { "ppid", CONTEXT_PPID }, + { "vppid", CONTEXT_VPPID }, + /* Perf options */ + PERF_HW(cpu-cycles, CPU_CYCLES), + PERF_HW(cycles, CPU_CYCLES), + PERF_HW(stalled-cycles-frontend, STALLED_CYCLES_FRONTEND), + PERF_HW(idle-cycles-frontend, STALLED_CYCLES_FRONTEND), + PERF_HW(stalled-cycles-backend, STALLED_CYCLES_BACKEND), + PERF_HW(idle-cycles-backend, STALLED_CYCLES_BACKEND), + PERF_HW(instructions, INSTRUCTIONS), + PERF_HW(cache-references, CACHE_REFERENCES), + PERF_HW(cache-misses, CACHE_MISSES), + PERF_HW(branch-instructions, BRANCH_INSTRUCTIONS), + PERF_HW(branches, BRANCH_INSTRUCTIONS), + PERF_HW(branch-misses, BRANCH_MISSES), + PERF_HW(bus-cycles, BUS_CYCLES), + + PERF_HW_CACHE(L1-dcache, L1D), + PERF_HW_CACHE(L1-icache, L1I), + PERF_HW_CACHE(LLC, LL), + PERF_HW_CACHE(dTLB, DTLB), + _PERF_HW_CACHE("iTLB-loads", ITLB, READ, ACCESS), + _PERF_HW_CACHE("iTLB-load-misses", ITLB, READ, MISS), + _PERF_HW_CACHE("branch-loads", BPU, READ, ACCESS), + _PERF_HW_CACHE("branch-load-misses", BPU, READ, MISS), + + + PERF_SW(cpu-clock, CPU_CLOCK), + PERF_SW(task-clock, TASK_CLOCK), + PERF_SW(page-fault, PAGE_FAULTS), + PERF_SW(faults, PAGE_FAULTS), + PERF_SW(major-faults, PAGE_FAULTS_MAJ), + PERF_SW(minor-faults, PAGE_FAULTS_MIN), + PERF_SW(context-switches, CONTEXT_SWITCHES), + PERF_SW(cs, CONTEXT_SWITCHES), + PERF_SW(cpu-migrations, CPU_MIGRATIONS), + PERF_SW(migrations, CPU_MIGRATIONS), + PERF_SW(alignment-faults, ALIGNMENT_FAULTS), + PERF_SW(emulation-faults, EMULATION_FAULTS), + { NULL, -1 }, /* Closure */ }; +#undef PERF_SW +#undef PERF_HW + /* - * Context options + * Context type for command line option parsing. */ -static struct ctx_opts { - enum context_type value; - char *symbol; -} ctx_opts[] = { - { CONTEXT_PID, "pid" }, - { CONTEXT_PERF_COUNTER, "perf" }, - { CONTEXT_COMM, "comm" }, - { CONTEXT_PRIO, "prio" }, - { CONTEXT_NICE, "nice" }, - { CONTEXT_VPID, "vpid" }, - { CONTEXT_TID, "tid" }, - { CONTEXT_VTID, "vtid" }, - { CONTEXT_PPID, "ppid" }, - { CONTEXT_VPPID, "vppid" }, - { -1, NULL }, /* Closure */ +struct ctx_type { + const struct ctx_opts *opt; + struct cds_list_head list; }; /* @@ -191,73 +258,31 @@ struct ctx_type_list { .head = CDS_LIST_HEAD_INIT(ctx_type_list.head), }; -/* - * Pretty print perf type. - */ -static void print_perf_type(FILE *ofp) -{ - fprintf(ofp, " "); - fprintf(ofp, "%s = %d, ", ctx_perf_type[0].symbol, ctx_perf_type[0].value); - fprintf(ofp, "%s = %d\n", ctx_perf_type[1].symbol, ctx_perf_type[1].value); -} - /* * Pretty print context type. */ static void print_ctx_type(FILE *ofp) { - int i = 0; + const char *indent = " "; + int indent_len = strlen(indent); + int len, i = 0; - fprintf(ofp, " "); + fprintf(ofp, indent); + len = indent_len; while (ctx_opts[i].symbol != NULL) { - fprintf(ofp, "%s = %d, ", ctx_opts[i].symbol, ctx_opts[i].value); - i++; - if (!(i%3)) { - fprintf(ofp, "\n "); - } - } -} - -/* - * Pretty print perf hardware counter. - */ -static void print_perf_hw(FILE *ofp) -{ - int i = 0, count = 0; - - fprintf(ofp, " "); - while (ctx_perf[i].symbol != NULL) { - if (ctx_perf[i].type == PERF_TYPE_HARDWARE) { - fprintf(ofp, "%s = %d, ", ctx_perf[i].symbol, ctx_perf[i].id.hard); - count++; - if (!(count % 3)) { - fprintf(ofp, "\n "); - } - } - i++; - } - fprintf(ofp, "\n"); -} - -/* - * Pretty print perf software counter. - */ -static void print_perf_sw(FILE *ofp) -{ - int i = 0, count = 0; - - fprintf(ofp, " "); - while (ctx_perf[i].symbol != NULL) { - if (ctx_perf[i].type == PERF_TYPE_SOFTWARE) { - fprintf(ofp, "%s = %d, ", ctx_perf[i].symbol, ctx_perf[i].id.soft); - count++; - if (!(count % 3)) { - fprintf(ofp, "\n "); + if (len > indent_len) { + if (len + strlen(ctx_opts[i].symbol) + 2 + >= PRINT_LINE_LEN) { + fprintf(ofp, ",\n"); + fprintf(ofp, indent); + len = indent_len; + } else { + len += fprintf(ofp, ", "); } } + len += fprintf(ofp, "%s", ctx_opts[i].symbol); i++; } - fprintf(ofp, "\n"); } /* @@ -265,12 +290,12 @@ static void print_perf_sw(FILE *ofp) */ static void usage(FILE *ofp) { - fprintf(ofp, "usage: lttng add-context -t TYPE [options] [context_options]\n"); + fprintf(ofp, "usage: lttng add-context -t TYPE\n"); fprintf(ofp, "\n"); - fprintf(ofp, "If no event name is given (-e), the context will be added to " - "all events in the channel.\n"); - fprintf(ofp, "If no channel and no event is given (-c/-e), the context " - "will be added to all events in all channels\n"); + fprintf(ofp, "If no event name is given (-e), the context will be added to\n"); + fprintf(ofp, "all events in the channel.\n"); + fprintf(ofp, "If no channel and no event is given (-c/-e), the context\n"); + fprintf(ofp, "will be added to all events in all channels.\n"); fprintf(ofp, "\n"); fprintf(ofp, "Options:\n"); fprintf(ofp, " -h, --help Show this help\n"); @@ -281,94 +306,19 @@ static void usage(FILE *ofp) fprintf(ofp, " -u, --userspace Apply for the user-space tracer\n"); fprintf(ofp, " --all If -u, apply on all traceable apps\n"); fprintf(ofp, " -p, --pid PID If -u, apply on a specific PID\n"); - fprintf(ofp, " -t, --type TYPE Context type. You can repeat that option on the command line.\n"); - fprintf(ofp, " TYPE can be a digit or a string below:\n"); + fprintf(ofp, " -t, --type TYPE Context type. You can repeat that option on\n"); + fprintf(ofp, " the command line.\n"); + fprintf(ofp, " TYPE can be one of the strings below:\n"); print_ctx_type(ofp); fprintf(ofp, "\n"); - fprintf(ofp, "Context options:\n"); - fprintf(ofp, " --perf-type TYPE Perf event type. TYPE can be a digit or a string below:\n"); - print_perf_type(ofp); - fprintf(ofp, " --perf-id ID Perf event id. ID can be a digit or a string below:\n"); - fprintf(ofp, " Hardware IDs (%s: %d):\n", ctx_perf_type[0].symbol, ctx_perf_type[0].value); - print_perf_hw(ofp); - fprintf(ofp, " Software IDs (%s: %d):\n", ctx_perf_type[1].symbol, ctx_perf_type[1].value); - print_perf_sw(ofp); fprintf(ofp, "Example:\n"); - fprintf(ofp, "This command will add the context information 'prio' and a perf counter hardware branch miss to\n" - "the 'sys_enter' event in the trace data output.\n"); - fprintf(ofp, "# lttng add-context -k -e sys_enter -t prio -t perf --perf-type hw --perf-id branch_miss\n"); + fprintf(ofp, "This command will add the context information 'prio' and two perf\n" + "counters: hardware branch misses and cache-misses, to all events\n" + "in the trace data output:\n"); + fprintf(ofp, "# lttng add-context -k -t prio -t perf:branch-misses -t perf:cache-misses\n"); fprintf(ofp, "\n"); } -/* - * Return perf hardware counter index. - */ -static int find_perf_idx(const char *opt) -{ - int ret = -1, i = 0; - - while (ctx_perf[i].symbol != NULL) { - if (strcmp(opt, ctx_perf[i].symbol) == 0) { - ret = i; - goto end; - } - i++; - } - -end: - return ret; -} - -/* - * Return perf type index in global array. - */ -static int find_perf_type_idx(const char *opt) -{ - int ret = -1, i = 0; - - while (ctx_perf_type[i].symbol != NULL) { - if (strcmp(opt, ctx_perf_type[i].symbol) == 0) { - ret = i; - goto end; - } - i++; - } - -end: - return ret; -} - -/* - * Return perf counter index - */ -static int find_perf_symbol_idx(int type, int id) -{ - int ret = -1, i = 0; - - while (ctx_perf[i].symbol != NULL) { - if (ctx_perf[i].type == type) { - switch (type) { - case PERF_TYPE_HARDWARE: - if (ctx_perf[i].id.hard == id) { - ret = i; - goto end; - } - break; - case PERF_TYPE_SOFTWARE: - if (ctx_perf[i].id.soft == id) { - ret = i; - goto end; - } - break; - } - } - i++; - } - -end: - return ret; -} - /* * Find context numerical value from string. */ @@ -388,34 +338,16 @@ end: return ret; } -/* - * Return context symbol index - */ -static int find_ctx_symbol_idx(int type) -{ - int ret = -1, i = 0; - - while (ctx_opts[i].symbol != NULL) { - if (type == ctx_opts[i].value) { - ret = i; - goto end; - } - i++; - } - -end: - return ret; -} - /* * Add context to channel or event. */ static int add_context(void) { - int ret = CMD_SUCCESS, index; + int ret = CMD_SUCCESS; struct lttng_event_context context; struct lttng_domain dom; struct ctx_type *type; + char *ptr; if (set_session_name(opt_session_name) < 0) { ret = CMD_ERROR; @@ -424,46 +356,20 @@ static int add_context(void) /* Iterate over all context type given */ cds_list_for_each_entry(type, &ctx_type_list.head, list) { - context.ctx = type->type; - if (type->type == LTTNG_KERNEL_CONTEXT_PERF_COUNTER) { - /* Check perf type */ - if (isdigit(*opt_perf_type)) { - context.u.perf_counter.type = atoi(opt_perf_type); - } else { - index = find_perf_type_idx(opt_perf_type); - if (index == -1) { - ERR("Bad event type given. Please use --perf-type TYPE."); - goto error; - } - context.u.perf_counter.type = ctx_perf_type[index].value; + context.ctx = type->opt->ctx_type; + if (context.ctx == LTTNG_EVENT_CONTEXT_PERF_COUNTER) { + context.u.perf_counter.type = type->opt->u.perf.type; + context.u.perf_counter.config = type->opt->u.perf.config; + strcpy(context.u.perf_counter.name, + type->opt->symbol); + /* Replace : and - by _ */ + while ((ptr = strchr(context.u.perf_counter.name, '-')) != NULL) { + *ptr = '_'; } - - /* Check perf counter ID */ - if (isdigit(*opt_perf_id)) { - context.u.perf_counter.config = atoi(opt_perf_id); - index = find_perf_symbol_idx(context.u.perf_counter.type, - context.u.perf_counter.config); - } else { - index = find_perf_idx(opt_perf_id); - switch (context.u.perf_counter.type) { - case PERF_TYPE_HARDWARE: - context.u.perf_counter.config = ctx_perf[index].id.hard; - break; - case PERF_TYPE_SOFTWARE: - context.u.perf_counter.config = ctx_perf[index].id.soft; - break; - } + while ((ptr = strchr(context.u.perf_counter.name, ':')) != NULL) { + *ptr = '_'; } - - if (index == -1) { - ERR("Bad perf event id given. Please use --perf-id ID."); - goto error; - } - - strncpy(context.u.perf_counter.name, ctx_perf[index].symbol, - LTTNG_SYMBOL_NAME_LEN); } - if (opt_kernel) { /* Create kernel domain */ dom.type = LTTNG_DOMAIN_KERNEL; @@ -474,12 +380,7 @@ static int add_context(void) if (ret < 0) { goto error; } else { - if (type->type == LTTNG_KERNEL_CONTEXT_PERF_COUNTER) { - MSG("Perf counter %s added", context.u.perf_counter.name); - } else { - index = find_ctx_symbol_idx(type->type); - MSG("Kernel context %s added", ctx_opts[index].symbol); - } + MSG("Kernel context %s added", type->opt->symbol); } } else if (opt_userspace) { /* User-space tracer action */ /* @@ -508,7 +409,7 @@ int cmd_add_context(int argc, const char **argv) int index, opt, ret = CMD_SUCCESS; char *tmp; static poptContext pc; - struct ctx_type *type; + struct ctx_type *type, *tmptype; if (argc < 2) { usage(stderr); @@ -539,18 +440,13 @@ int cmd_add_context(int argc, const char **argv) ret = -1; goto end; } - /* Numerical value are allowed also */ - if (isdigit(*tmp)) { - type->type = atoi(tmp); - } else { - index = find_ctx_type_idx(tmp); - if (index < 0) { - ERR("Unknown context type %s", tmp); - goto end; - } - type->type = ctx_opts[index].value; + index = find_ctx_type_idx(tmp); + if (index < 0) { + ERR("Unknown context type %s", tmp); + goto end; } - if (type->type == -1) { + type->opt = &ctx_opts[index]; + if (type->opt->ctx_type == -1) { ERR("Unknown context type %s", tmp); } else { cds_list_add(&type->list, &ctx_type_list.head); @@ -567,7 +463,7 @@ int cmd_add_context(int argc, const char **argv) ret = add_context(); /* Cleanup allocated memory */ - cds_list_for_each_entry(type, &ctx_type_list.head, list) { + cds_list_for_each_entry_safe(type, tmptype, &ctx_type_list.head, list) { free(type); }