+++ /dev/null
-/*
- * Copyright (C) 2011 - David Goulet <david.goulet@polymtl.ca>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; only version 2
- * of the License.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#define _GNU_SOURCE
-#include <ctype.h>
-#include <popt.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <urcu/list.h>
-
-#include "../cmd.h"
-#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_userspace;
-static char *opt_cmd_name;
-static pid_t opt_pid;
-static char *opt_type;
-
-enum {
- OPT_HELP = 1,
- OPT_TYPE,
- OPT_USERSPACE,
-};
-
-static struct lttng_handle *handle;
-
-/*
- * Taken from the LTTng ABI
- */
-enum context_type {
- CONTEXT_PID = 0,
- CONTEXT_PERF_COUNTER = 1,
- CONTEXT_PROCNAME = 2,
- CONTEXT_PRIO = 3,
- CONTEXT_NICE = 4,
- CONTEXT_VPID = 5,
- CONTEXT_TID = 6,
- CONTEXT_VTID = 7,
- CONTEXT_PPID = 8,
- CONTEXT_VPPID = 9,
-};
-
-/*
- * Taken from the Perf ABI (all enum perf_*)
- */
-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_STALLED_CYCLES_FRONTEND = 7,
- PERF_COUNT_HW_STALLED_CYCLES_BACKEND = 8,
-};
-
-enum perf_count_soft {
- PERF_COUNT_SW_CPU_CLOCK = 0,
- PERF_COUNT_SW_TASK_CLOCK = 1,
- PERF_COUNT_SW_PAGE_FAULTS = 2,
- PERF_COUNT_SW_CONTEXT_SWITCHES = 3,
- PERF_COUNT_SW_CPU_MIGRATIONS = 4,
- PERF_COUNT_SW_PAGE_FAULTS_MIN = 5,
- PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6,
- PERF_COUNT_SW_ALIGNMENT_FAULTS = 7,
- 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},
- {"session", 's', POPT_ARG_STRING, &opt_session_name, 0, 0, 0},
- {"channel", 'c', POPT_ARG_STRING, &opt_channel_name, 0, 0, 0},
- {"event", 'e', POPT_ARG_STRING, &opt_event_name, 0, 0, 0},
- {"kernel", 'k', POPT_ARG_VAL, &opt_kernel, 1, 0, 0},
- {"userspace", 'u', POPT_ARG_STRING | POPT_ARGFLAG_OPTIONAL, &opt_cmd_name, OPT_USERSPACE, 0, 0},
- {"pid", 'p', POPT_ARG_INT, &opt_pid, 0, 0, 0},
- {"type", 't', POPT_ARG_STRING, &opt_type, OPT_TYPE, 0, 0},
- {0, 0, 0, 0, 0, 0, 0}
-};
-
-/*
- * Context options
- */
-#define PERF_HW(opt, name) \
- { \
- "perf:" #opt, CONTEXT_PERF_COUNTER, \
- .u.perf = { PERF_TYPE_HARDWARE, PERF_COUNT_HW_##name, },\
- }
-
-#define PERF_SW(opt, name) \
- { \
- "perf:" #opt, CONTEXT_PERF_COUNTER, \
- .u.perf = { PERF_TYPE_SOFTWARE, PERF_COUNT_SW_##name, },\
- }
-
-#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 << 8) \
- | ((uint64_t) PERF_COUNT_HW_CACHE_RESULT_##result << 16), \
- }, \
- }
-
-#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;
- enum context_type ctx_type;
- union {
- struct {
- uint32_t type;
- uint64_t config;
- } perf;
- } u;
-} ctx_opts[] = {
- { "pid", CONTEXT_PID },
- { "procname", CONTEXT_PROCNAME },
- { "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 type for command line option parsing.
- */
-struct ctx_type {
- const struct ctx_opts *opt;
- struct cds_list_head list;
-};
-
-/*
- * List of context type. Use to enable multiple context on a single command
- * line entry.
- */
-struct ctx_type_list {
- struct cds_list_head head;
-} ctx_type_list = {
- .head = CDS_LIST_HEAD_INIT(ctx_type_list.head),
-};
-
-/*
- * Pretty print context type.
- */
-static void print_ctx_type(FILE *ofp)
-{
- const char *indent = " ";
- int indent_len = strlen(indent);
- int len, i = 0;
-
- fprintf(ofp, "%s", indent);
- len = indent_len;
- while (ctx_opts[i].symbol != NULL) {
- if (len > indent_len) {
- if (len + strlen(ctx_opts[i].symbol) + 2
- >= PRINT_LINE_LEN) {
- fprintf(ofp, ",\n");
- fprintf(ofp, "%s", indent);
- len = indent_len;
- } else {
- len += fprintf(ofp, ", ");
- }
- }
- len += fprintf(ofp, "%s", ctx_opts[i].symbol);
- i++;
- }
-}
-
-/*
- * usage
- */
-static void usage(FILE *ofp)
-{
- 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 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 and all channels.\n");
- fprintf(ofp, "\n");
- fprintf(ofp, "Options:\n");
- fprintf(ofp, " -h, --help Show this help\n");
- fprintf(ofp, " -s, --session Apply on session name\n");
- fprintf(ofp, " -c, --channel NAME Apply on channel\n");
- fprintf(ofp, " -e, --event NAME Apply on event\n");
- fprintf(ofp, " -k, --kernel Apply for the kernel tracer\n");
- fprintf(ofp, " -u, --userspace [CMD] Apply for the user-space tracer\n");
- fprintf(ofp, " If no CMD, the domain used is UST global\n");
- fprintf(ofp, " or else the domain is UST EXEC_NAME\n");
- fprintf(ofp, " -p, --pid PID If -u, apply to specific PID (domain: UST PID)\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, "Example:\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");
-}
-
-/*
- * Find context numerical value from string.
- */
-static int find_ctx_type_idx(const char *opt)
-{
- int ret = -1, i = 0;
-
- while (ctx_opts[i].symbol != NULL) {
- if (strcmp(opt, ctx_opts[i].symbol) == 0) {
- ret = i;
- goto end;
- }
- i++;
- }
-
-end:
- return ret;
-}
-
-/*
- * Add context to channel or event.
- */
-static int add_context(char *session_name)
-{
- int ret = CMD_SUCCESS;
- struct lttng_event_context context;
- struct lttng_domain dom;
- struct ctx_type *type;
- char *ptr;
-
- if (opt_kernel) {
- dom.type = LTTNG_DOMAIN_KERNEL;
- } else if (opt_pid != 0) {
- dom.type = LTTNG_DOMAIN_UST_PID;
- dom.attr.pid = opt_pid;
- DBG("PID %d set to lttng handle", opt_pid);
- } else if (opt_userspace && opt_cmd_name == NULL) {
- dom.type = LTTNG_DOMAIN_UST;
- } else if (opt_userspace && opt_cmd_name != NULL) {
- dom.type = LTTNG_DOMAIN_UST_EXEC_NAME;
- strncpy(dom.attr.exec_name, opt_cmd_name, NAME_MAX);
- } else {
- ERR("Please specify a tracer (-k/--kernel or -u/--userspace)");
- ret = CMD_NOT_IMPLEMENTED;
- goto error;
- }
-
- handle = lttng_create_handle(session_name, &dom);
- if (handle == NULL) {
- ret = -1;
- goto error;
- }
-
- /* Iterate over all context type given */
- cds_list_for_each_entry(type, &ctx_type_list.head, list) {
- 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 = '_';
- }
- while ((ptr = strchr(context.u.perf_counter.name, ':')) != NULL) {
- *ptr = '_';
- }
- }
- DBG("Adding context...");
-
- ret = lttng_add_context(handle, &context, opt_event_name,
- opt_channel_name);
- if (ret < 0) {
- fprintf(stderr, "%s: ", type->opt->symbol);
- continue;
- } else {
- MSG("%s context %s added to %s event in %s",
- opt_kernel ? "kernel" : "UST", type->opt->symbol,
- opt_event_name ? opt_event_name : "all",
- opt_channel_name ? opt_channel_name : "all channels");
- }
- }
-
-error:
- lttng_destroy_handle(handle);
-
- return ret;
-}
-
-/*
- * Add context on channel or event.
- */
-int cmd_add_context(int argc, const char **argv)
-{
- int index, opt, ret = CMD_SUCCESS;
- static poptContext pc;
- struct ctx_type *type, *tmptype;
- char *session_name = NULL;
-
- if (argc < 2) {
- usage(stderr);
- goto end;
- }
-
- pc = poptGetContext(NULL, argc, argv, long_options, 0);
- poptReadDefaultConfig(pc, 0);
-
- while ((opt = poptGetNextOpt(pc)) != -1) {
- switch (opt) {
- case OPT_HELP:
- usage(stderr);
- ret = CMD_SUCCESS;
- goto end;
- case OPT_TYPE:
- type = malloc(sizeof(struct ctx_type));
- if (type == NULL) {
- perror("malloc ctx_type");
- ret = -1;
- goto end;
- }
- index = find_ctx_type_idx(opt_type);
- if (index < 0) {
- ERR("Unknown context type %s", opt_type);
- goto end;
- }
- type->opt = &ctx_opts[index];
- if (type->opt->ctx_type == -1) {
- ERR("Unknown context type %s", opt_type);
- } else {
- cds_list_add(&type->list, &ctx_type_list.head);
- }
- break;
- case OPT_USERSPACE:
- opt_userspace = 1;
- opt_cmd_name = poptGetOptArg(pc);
- break;
- default:
- usage(stderr);
- ret = CMD_UNDEFINED;
- goto end;
- }
- }
-
- if (!opt_session_name) {
- session_name = get_session_name();
- if (session_name == NULL) {
- ret = -1;
- goto end;
- }
- } else {
- session_name = opt_session_name;
- }
-
- ret = add_context(session_name);
-
- /* Cleanup allocated memory */
- cds_list_for_each_entry_safe(type, tmptype, &ctx_type_list.head, list) {
- free(type);
- }
-
-end:
- return ret;
-}
projects / lttng-tools.git / blobdiff