diff options
Diffstat (limited to 'tools/perf/util/trace-event-parse.c')
| -rw-r--r-- | tools/perf/util/trace-event-parse.c | 175 |
1 files changed, 118 insertions, 57 deletions
diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index ad74be1f0e42..9c015fc2bcfb 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -1,33 +1,18 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (C) 2009, Steven Rostedt <srostedt@redhat.com> - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - * - * 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; version 2 of the License (not later!) - * - * 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 - * - * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <errno.h> -#include "../perf.h" #include "debug.h" #include "trace-event.h" -#include "sane_ctype.h" +#include <linux/ctype.h> +#include <linux/kernel.h> +#include <event-parse.h> static int get_common_field(struct scripting_context *context, int *offset, int *size, const char *type) @@ -111,10 +96,10 @@ raw_field_value(struct tep_event *event, const char *name, void *data) unsigned long long read_size(struct tep_event *event, void *ptr, int size) { - return tep_read_number(event->pevent, ptr, size); + return tep_read_number(event->tep, ptr, size); } -void event_format__fprintf(struct tep_event *event, +void event_format__fprintf(const struct tep_event *event, int cpu, void *data, int size, FILE *fp) { struct tep_record record; @@ -126,15 +111,122 @@ void event_format__fprintf(struct tep_event *event, record.data = data; trace_seq_init(&s); - tep_event_info(&s, event, &record); + tep_print_event(event->tep, &s, &record, "%s", TEP_PRINT_INFO); trace_seq_do_fprintf(&s, fp); trace_seq_destroy(&s); } -void event_format__print(struct tep_event *event, - int cpu, void *data, int size) +/* + * prev_state is of size long, which is 32 bits on 32 bit architectures. + * As it needs to have the same bits for both 32 bit and 64 bit architectures + * we can just assume that the flags we care about will all be within + * the 32 bits. + */ +#define MAX_STATE_BITS 32 + +static const char *convert_sym(struct tep_print_flag_sym *sym) { - return event_format__fprintf(event, cpu, data, size, stdout); + static char save_states[MAX_STATE_BITS + 1]; + + memset(save_states, 0, sizeof(save_states)); + + /* This is the flags for the prev_state_field, now make them into a string */ + for (; sym; sym = sym->next) { + long bitmask = strtoul(sym->value, NULL, 0); + int i; + + for (i = 0; !(bitmask & 1); i++) + bitmask >>= 1; + + if (i >= MAX_STATE_BITS) + continue; + + save_states[i] = sym->str[0]; + } + + return save_states; +} + +static struct tep_print_arg_field * +find_arg_field(struct tep_format_field *prev_state_field, struct tep_print_arg *arg) +{ + struct tep_print_arg_field *field; + + if (!arg) + return NULL; + + if (arg->type == TEP_PRINT_FIELD) + return &arg->field; + + if (arg->type == TEP_PRINT_OP) { + field = find_arg_field(prev_state_field, arg->op.left); + if (field && field->field == prev_state_field) + return field; + field = find_arg_field(prev_state_field, arg->op.right); + if (field && field->field == prev_state_field) + return field; + } + return NULL; +} + +static struct tep_print_flag_sym * +test_flags(struct tep_format_field *prev_state_field, struct tep_print_arg *arg) +{ + struct tep_print_arg_field *field; + + field = find_arg_field(prev_state_field, arg->flags.field); + if (!field) + return NULL; + + return arg->flags.flags; +} + +static struct tep_print_flag_sym * +search_op(struct tep_format_field *prev_state_field, struct tep_print_arg *arg) +{ + struct tep_print_flag_sym *sym = NULL; + + if (!arg) + return NULL; + + if (arg->type == TEP_PRINT_OP) { + sym = search_op(prev_state_field, arg->op.left); + if (sym) + return sym; + + sym = search_op(prev_state_field, arg->op.right); + if (sym) + return sym; + } else if (arg->type == TEP_PRINT_FLAGS) { + sym = test_flags(prev_state_field, arg); + } + + return sym; +} + +const char *parse_task_states(struct tep_format_field *state_field) +{ + struct tep_print_flag_sym *sym; + struct tep_print_arg *arg; + struct tep_event *event; + + event = state_field->event; + + /* + * Look at the event format fields, and search for where + * the prev_state is parsed via the format flags. + */ + for (arg = event->print_fmt.args; arg; arg = arg->next) { + /* + * Currently, the __print_flags() for the prev_state + * is embedded in operations, so they too must be + * searched. + */ + sym = search_op(state_field, arg); + if (sym) + return convert_sym(sym); + } + return NULL; } void parse_ftrace_printk(struct tep_handle *pevent, @@ -190,37 +282,6 @@ int parse_event_file(struct tep_handle *pevent, return tep_parse_event(pevent, buf, size, sys); } -struct tep_event *trace_find_next_event(struct tep_handle *pevent, - struct tep_event *event) -{ - static int idx; - int events_count; - struct tep_event *all_events; - - all_events = tep_get_first_event(pevent); - events_count = tep_get_events_count(pevent); - if (!pevent || !all_events || events_count < 1) - return NULL; - - if (!event) { - idx = 0; - return all_events; - } - - if (idx < events_count && event == (all_events + idx)) { - idx++; - if (idx == events_count) - return NULL; - return (all_events + idx); - } - - for (idx = 1; idx < events_count; idx++) { - if (event == (all_events + (idx - 1))) - return (all_events + idx); - } - return NULL; -} - struct flag { const char *name; unsigned long long value; @@ -254,7 +315,7 @@ unsigned long long eval_flag(const char *flag) if (isdigit(flag[0])) return strtoull(flag, NULL, 0); - for (i = 0; i < (int)(sizeof(flags)/sizeof(flags[0])); i++) + for (i = 0; i < (int)(ARRAY_SIZE(flags)); i++) if (strcmp(flags[i].name, flag) == 0) return flags[i].value; |