diff options
Diffstat (limited to 'sys/kern/kern_intr.c')
| -rw-r--r-- | sys/kern/kern_intr.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/sys/kern/kern_intr.c b/sys/kern/kern_intr.c index b605edf..a0c2bdc 100644 --- a/sys/kern/kern_intr.c +++ b/sys/kern/kern_intr.c @@ -27,6 +27,8 @@ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); +#include "opt_ddb.h" + #include <sys/param.h> #include <sys/bus.h> #include <sys/conf.h> @@ -49,6 +51,10 @@ __FBSDID("$FreeBSD$"); #include <machine/cpu.h> #include <machine/md_var.h> #include <machine/stdarg.h> +#ifdef DDB +#include <ddb/ddb.h> +#include <ddb/db_sym.h> +#endif struct int_entropy { struct proc *proc; @@ -561,6 +567,143 @@ restart: } } +#ifdef DDB +/* + * Dump details about an interrupt handler + */ +static void +db_dump_intrhand(struct intrhand *ih) +{ + int comma; + + db_printf("\t%-10s ", ih->ih_name); + switch (ih->ih_pri) { + case PI_REALTIME: + db_printf("CLK "); + break; + case PI_AV: + db_printf("AV "); + break; + case PI_TTYHIGH: + case PI_TTYLOW: + db_printf("TTY "); + break; + case PI_TAPE: + db_printf("TAPE"); + break; + case PI_NET: + db_printf("NET "); + break; + case PI_DISK: + case PI_DISKLOW: + db_printf("DISK"); + break; + case PI_DULL: + db_printf("DULL"); + break; + default: + if (ih->ih_pri >= PI_SOFT) + db_printf("SWI "); + else + db_printf("%4u", ih->ih_pri); + break; + } + db_printf(" "); + db_printsym((uintptr_t)ih->ih_handler, DB_STGY_PROC); + db_printf("(%p)", ih->ih_argument); + if (ih->ih_need || + (ih->ih_flags & (IH_FAST | IH_EXCLUSIVE | IH_ENTROPY | IH_DEAD | + IH_MPSAFE)) != 0) { + db_printf(" {"); + comma = 0; + if (ih->ih_flags & IH_FAST) { + db_printf("FAST"); + comma = 1; + } + if (ih->ih_flags & IH_EXCLUSIVE) { + if (comma) + db_printf(", "); + db_printf("EXCL"); + comma = 1; + } + if (ih->ih_flags & IH_ENTROPY) { + if (comma) + db_printf(", "); + db_printf("ENTROPY"); + comma = 1; + } + if (ih->ih_flags & IH_DEAD) { + if (comma) + db_printf(", "); + db_printf("DEAD"); + comma = 1; + } + if (ih->ih_flags & IH_MPSAFE) { + if (comma) + db_printf(", "); + db_printf("MPSAFE"); + comma = 1; + } + if (ih->ih_need) { + if (comma) + db_printf(", "); + db_printf("NEED"); + } + db_printf("}"); + } + db_printf("\n"); +} + +/* + * Dump details about an ithread + */ +void +db_dump_ithread(struct ithd *ithd, int handlers) +{ + struct proc *p; + struct intrhand *ih; + int comma; + + if (ithd->it_td != NULL) { + p = ithd->it_td->td_proc; + db_printf("%s (pid %d)", p->p_comm, p->p_pid); + } else + db_printf("%s: (no thread)", ithd->it_name); + if ((ithd->it_flags & (IT_SOFT | IT_ENTROPY | IT_DEAD)) != 0 || + ithd->it_need) { + db_printf(" {"); + comma = 0; + if (ithd->it_flags & IT_SOFT) { + db_printf("SOFT"); + comma = 1; + } + if (ithd->it_flags & IT_ENTROPY) { + if (comma) + db_printf(", "); + db_printf("ENTROPY"); + comma = 1; + } + if (ithd->it_flags & IT_DEAD) { + if (comma) + db_printf(", "); + db_printf("DEAD"); + comma = 1; + } + if (ithd->it_need) { + if (comma) + db_printf(", "); + db_printf("NEED"); + } + db_printf("}"); + } + db_printf("\n"); + + if (handlers) + TAILQ_FOREACH(ih, &ithd->it_handlers, ih_next) + db_dump_intrhand(ih); +} +#endif /* DDB */ + /* * Start standard software interrupt threads */ @@ -609,3 +752,25 @@ sysctl_intrcnt(SYSCTL_HANDLER_ARGS) SYSCTL_PROC(_hw, OID_AUTO, intrcnt, CTLTYPE_OPAQUE | CTLFLAG_RD, NULL, 0, sysctl_intrcnt, "", "Interrupt Counts"); + +#ifdef DDB +/* + * DDB command to dump the interrupt statistics. + */ +DB_SHOW_COMMAND(intrcnt, db_show_intrcnt) +{ + u_long *i; + char *cp; + int quit; + + cp = intrnames; + db_setup_paging(db_simple_pager, &quit, DB_LINES_PER_PAGE); + for (i = intrcnt, quit = 0; i != eintrcnt && !quit; i++) { + if (*cp == '\0') + break; + if (*i != 0) + db_printf("%s\t%lu\n", cp, *i); + cp += strlen(cp) + 1; + } +} +#endif |
