*
* 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; either version 2
- * of the License, or (at your option) any later version.
+ * 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
*/
#define _GNU_SOURCE
+#include <ctype.h>
#include <popt.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
-#include "cmd.h"
-#include "conf.h"
-#include "utils.h"
+#include <urcu/list.h>
+
+#include "../cmd.h"
+#include "../conf.h"
+#include "../utils.h"
static char *opt_event_name;
static char *opt_channel_name;
-static char *opt_perf_name;
static char *opt_session_name;
static int *opt_kernel;
static int opt_pid_all;
static int opt_userspace;
-static int opt_perf_type;
-static int opt_perf_id;
+static char *opt_perf_type;
+static char *opt_perf_id;
static pid_t opt_pid;
enum {
OPT_TYPE,
};
+/*
+ * Taken from the LTTng ABI
+ */
+enum context_type {
+ CONTEXT_PID = 0,
+ CONTEXT_PERF_COUNTER = 1,
+ CONTEXT_COMM = 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,
+};
+
+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,
+};
+
+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,
+};
+
static struct poptOption long_options[] = {
/* longName, shortName, argInfo, argPtr, value, descrip, argDesc */
{"help", 'h', POPT_ARG_NONE, 0, OPT_HELP, 0, 0},
{"userspace", 'u', POPT_ARG_VAL, &opt_userspace, 1, 0, 0},
{"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_INT, 0, OPT_TYPE, 0, 0},
- {"perf-name", 0, POPT_ARG_STRING, &opt_perf_name, 0, 0, 0},
- {"perf-type", 0, POPT_ARG_INT, &opt_perf_type, 0, 0, 0},
- {"perf-id", 0, POPT_ARG_INT, &opt_perf_id, 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.
+ */
+struct ctx_type {
+ int type;
+ struct cds_list_head list;
+};
+
+/*
+ * 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" },
+};
+
+/*
+ * Perf counter IDs
+ */
+static struct ctx_perf {
+ enum perf_type type;
+ union {
+ enum perf_count_hard hard;
+ enum perf_count_soft soft;
+ } id;
+ 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 },
+};
+
+/*
+ * Context options
+ */
+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 */
+};
+
+/*
+ * 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 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;
+
+ fprintf(ofp, " ");
+ 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 ");
+ }
+ }
+ i++;
+ }
+ fprintf(ofp, "\n");
+}
+
/*
* usage
*/
static void usage(FILE *ofp)
{
- fprintf(ofp, "usage: lttng add-context [options] [context_options]\n");
+ fprintf(ofp, "usage: lttng add-context -t TYPE [options] [context_options]\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, "\n");
fprintf(ofp, "Options:\n");
fprintf(ofp, " -h, --help Show this help\n");
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. TYPE must be a numerical value:\n");
- fprintf(ofp, " KERNEL_CONTEXT_PID = 0\n");
- fprintf(ofp, " KERNEL_CONTEXT_PERF_COUNTER = 1\n");
- fprintf(ofp, " KERNEL_CONTEXT_COMM = 2\n");
- fprintf(ofp, " KERNEL_CONTEXT_PRIO = 3\n");
- fprintf(ofp, " KERNEL_CONTEXT_NICE = 4\n");
- fprintf(ofp, " KERNEL_CONTEXT_VPID = 5\n");
- fprintf(ofp, " KERNEL_CONTEXT_TID = 6\n");
- fprintf(ofp, " KERNEL_CONTEXT_VTID = 7\n");
- fprintf(ofp, " KERNEL_CONTEXT_PPID = 8\n");
- fprintf(ofp, " KERNEL_CONTEXT_VPPID = 9\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");
+ print_ctx_type(ofp);
fprintf(ofp, "\n");
fprintf(ofp, "Context options:\n");
- fprintf(ofp, " --perf-name NAME Perf event name\n");
- fprintf(ofp, " --perf-type TYPE Perf event type. TYPE must be a numeric value:\n");
- fprintf(ofp, " PERF_TYPE_HARDWARE = 0\n");
- fprintf(ofp, " PERF_TYPE_SOFTWARE = 1\n");
- fprintf(ofp, " --perf-id ID Perf event id. ID must be a numeric value:\n");
- fprintf(ofp, " Hardware IDs (0):\n");
- fprintf(ofp, " PERF_COUNT_HW_CPU_CYCLES = 0\n");
- fprintf(ofp, " PERF_COUNT_HW_INSTRUCTIONS = 1\n");
- fprintf(ofp, " PERF_COUNT_HW_CACHE_REFERENCES = 2\n");
- fprintf(ofp, " PERF_COUNT_HW_CACHE_MISSES = 3\n");
- fprintf(ofp, " PERF_COUNT_HW_BRANCH_INSTRUCTIONS = 4\n");
- fprintf(ofp, " PERF_COUNT_HW_BRANCH_MISSES = 5\n");
- fprintf(ofp, " PERF_COUNT_HW_BUS_CYCLES = 6\n");
- fprintf(ofp, " Software IDs (1):\n");
- fprintf(ofp, " PERF_COUNT_SW_CPU_CLOCK = 0\n");
- fprintf(ofp, " PERF_COUNT_SW_TASK_CLOCK = 1\n");
- fprintf(ofp, " PERF_COUNT_SW_PAGE_FAULTS = 2\n");
- fprintf(ofp, " PERF_COUNT_SW_CONTEXT_SWITCHES = 3\n");
- fprintf(ofp, " PERF_COUNT_SW_CPU_MIGRATIONS = 4\n");
- fprintf(ofp, " PERF_COUNT_SW_PAGE_FAULTS_MIN = 5\n");
- fprintf(ofp, " PERF_COUNT_SW_PAGE_FAULTS_MAJ = 6\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, "\n");
}
/*
- * add_context
- *
- * Add context to channel or event.
+ * Return perf hardware counter index.
*/
-static int add_context(int type)
+static int find_perf_idx(const char *opt)
{
- int ret = CMD_SUCCESS;
+ 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.
+ */
+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;
+}
+
+/*
+ * 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;
struct lttng_event_context context;
struct lttng_domain dom;
+ struct ctx_type *type;
if (set_session_name(opt_session_name) < 0) {
ret = CMD_ERROR;
goto error;
}
- context.ctx = type;
- if (type == LTTNG_KERNEL_CONTEXT_PERF_COUNTER) {
- context.u.perf_counter.type = opt_perf_type;
- context.u.perf_counter.config = opt_perf_id;
- strncpy(context.u.perf_counter.name, opt_perf_name,
- LTTNG_SYMBOL_NAME_LEN);
- }
+ /* 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;
+ }
+
+ /* 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;
+ }
+ }
- if (opt_kernel) {
- /* Create kernel domain */
- dom.type = LTTNG_DOMAIN_KERNEL;
+ if (index == -1) {
+ ERR("Bad perf event id given. Please use --perf-id ID.");
+ goto error;
+ }
- DBG("Adding kernel context");
- ret = lttng_add_context(&dom, &context, opt_event_name,
- opt_channel_name);
- if (ret < 0) {
+ 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;
+
+ DBG("Adding kernel context");
+ ret = lttng_add_context(&dom, &context, opt_event_name,
+ opt_channel_name);
+ 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);
+ }
+ }
+ } else if (opt_userspace) { /* User-space tracer action */
+ /*
+ * TODO: Waiting on lttng UST 2.0
+ */
+ if (opt_pid_all) {
+ } else if (opt_pid != 0) {
+ }
+ ret = CMD_NOT_IMPLEMENTED;
goto error;
} else {
- MSG("Kernel context added");
- }
- } else if (opt_userspace) { /* User-space tracer action */
- /*
- * TODO: Waiting on lttng UST 2.0
- */
- if (opt_pid_all) {
- } else if (opt_pid != 0) {
+ ERR("Please specify a tracer (kernel or user-space)");
+ goto error;
}
- ret = CMD_NOT_IMPLEMENTED;
- goto error;
- } else {
- ERR("Please specify a tracer (kernel or user-space)");
- goto error;
}
error:
}
/*
- * cmd_add_context
- *
- * Add context on channel or event.
+ * Add context on channel or event.
*/
int cmd_add_context(int argc, const char **argv)
{
- int opt, ret = CMD_SUCCESS;
+ int index, opt, ret = CMD_SUCCESS;
char *tmp;
static poptContext pc;
+ struct ctx_type *type;
if (argc < 2) {
usage(stderr);
free(tmp);
goto end;
}
- ret = add_context(atoi(tmp));
- if (ret < 0) {
- free(tmp);
+ type = malloc(sizeof(struct ctx_type));
+ if (type == NULL) {
+ perror("malloc ctx_type");
+ 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;
+ }
+ if (type->type == -1) {
+ ERR("Unknown context type %s", tmp);
+ } else {
+ cds_list_add(&type->list, &ctx_type_list.head);
+ }
free(tmp);
break;
default:
}
}
+ ret = add_context();
+
+ /* Cleanup allocated memory */
+ cds_list_for_each_entry(type, &ctx_type_list.head, list) {
+ free(type);
+ }
+
end:
return ret;
}
projects / lttng-tools.git / blobdiff