ddb: Add 'show active trace' command
'show active trace', or 'acttrace' for short, prints backtraces from running threads only. Reviewed by: mjg Differential Revision: https://reviews.freebsd.org/D7646
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7e89a3221f
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=304828
@ -72,6 +72,7 @@ static db_cmdfcn_t db_halt;
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static db_cmdfcn_t db_kill;
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static db_cmdfcn_t db_reset;
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static db_cmdfcn_t db_stack_trace;
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static db_cmdfcn_t db_stack_trace_active;
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static db_cmdfcn_t db_stack_trace_all;
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static db_cmdfcn_t db_watchdog;
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@ -79,6 +80,12 @@ static db_cmdfcn_t db_watchdog;
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* 'show' commands
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*/
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static struct command db_show_active_cmds[] = {
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{ "trace", db_stack_trace_active, 0, NULL },
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};
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struct command_table db_show_active_table =
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LIST_HEAD_INITIALIZER(db_show_active_table);
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static struct command db_show_all_cmds[] = {
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{ "trace", db_stack_trace_all, 0, NULL },
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};
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@ -86,6 +93,7 @@ struct command_table db_show_all_table =
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LIST_HEAD_INITIALIZER(db_show_all_table);
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static struct command db_show_cmds[] = {
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{ "active", 0, 0, &db_show_active_table },
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{ "all", 0, 0, &db_show_all_table },
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{ "registers", db_show_regs, 0, NULL },
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{ "breaks", db_listbreak_cmd, 0, NULL },
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@ -120,6 +128,8 @@ static struct command db_cmds[] = {
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{ "match", db_trace_until_matching_cmd,0, NULL },
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{ "trace", db_stack_trace, CS_OWN, NULL },
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{ "t", db_stack_trace, CS_OWN, NULL },
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/* XXX alias for active trace */
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{ "acttrace", db_stack_trace_active, 0, NULL },
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/* XXX alias for all trace */
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{ "alltrace", db_stack_trace_all, 0, NULL },
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{ "where", db_stack_trace, CS_OWN, NULL },
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@ -195,6 +205,9 @@ db_command_init(void)
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db_command_register(&db_cmd_table, &db_cmds[i]);
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for (i = 0; i < N(db_show_cmds); i++)
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db_command_register(&db_show_table, &db_show_cmds[i]);
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for (i = 0; i < N(db_show_active_cmds); i++)
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db_command_register(&db_show_active_table,
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&db_show_active_cmds[i]);
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for (i = 0; i < N(db_show_all_cmds); i++)
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db_command_register(&db_show_all_table, &db_show_all_cmds[i]);
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#undef N
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@ -799,8 +812,7 @@ db_stack_trace(db_expr_t tid, bool hastid, db_expr_t count, char *modif)
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}
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static void
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db_stack_trace_all(db_expr_t dummy, bool dummy2, db_expr_t dummy3,
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char *dummy4)
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_db_stack_trace_all(bool active_only)
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{
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struct proc *p;
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struct thread *td;
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@ -811,8 +823,18 @@ db_stack_trace_all(db_expr_t dummy, bool dummy2, db_expr_t dummy3,
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prev_jb = kdb_jmpbuf(jb);
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if (setjmp(jb) == 0) {
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FOREACH_THREAD_IN_PROC(p, td) {
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db_printf("\nTracing command %s pid %d tid %ld td %p\n",
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p->p_comm, p->p_pid, (long)td->td_tid, td);
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if (td->td_state == TDS_RUNNING)
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db_printf("\nTracing command %s pid %d"
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" tid %ld td %p (CPU %d)\n",
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p->p_comm, p->p_pid,
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(long)td->td_tid, td,
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td->td_oncpu);
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else if (active_only)
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continue;
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else
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db_printf("\nTracing command %s pid %d"
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" tid %ld td %p\n", p->p_comm,
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p->p_pid, (long)td->td_tid, td);
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db_trace_thread(td, -1);
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if (db_pager_quit) {
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kdb_jmpbuf(prev_jb);
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@ -824,6 +846,22 @@ db_stack_trace_all(db_expr_t dummy, bool dummy2, db_expr_t dummy3,
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}
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}
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static void
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db_stack_trace_active(db_expr_t dummy, bool dummy2, db_expr_t dummy3,
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char *dummy4)
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{
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_db_stack_trace_all(true);
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}
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static void
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db_stack_trace_all(db_expr_t dummy, bool dummy2, db_expr_t dummy3,
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char *dummy4)
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{
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_db_stack_trace_all(false);
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}
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/*
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* Take the parsed expression value from the command line that was parsed
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* as a hexadecimal value and convert it as if the expression was parsed
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