diff options
| -rw-r--r-- | cpu-exec.c | 6 | ||||
| -rw-r--r-- | cpus.c | 19 | ||||
| -rw-r--r-- | include/qemu-common.h | 4 | ||||
| -rw-r--r-- | monitor.c | 1 |
4 files changed, 30 insertions, 0 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 3c14502329..cbc8067b37 100644 --- a/cpu-exec.c +++ b/cpu-exec.c @@ -105,6 +105,12 @@ static void init_delay_params(SyncClocks *sc, sc->realtime_clock + cpu_get_clock_offset(); sc->last_cpu_icount = cpu->icount_extra + cpu->icount_decr.u16.low; + if (sc->diff_clk < max_delay) { + max_delay = sc->diff_clk; + } + if (sc->diff_clk > max_advance) { + max_advance = sc->diff_clk; + } /* Print every 2s max if the guest is late. We limit the number of printed messages to NB_PRINT_MAX(currently 100) */ @@ -64,6 +64,8 @@ #endif /* CONFIG_LINUX */ static CPUState *next_cpu; +int64_t max_delay; +int64_t max_advance; bool cpu_is_stopped(CPUState *cpu) { @@ -1552,3 +1554,20 @@ void qmp_inject_nmi(Error **errp) error_set(errp, QERR_UNSUPPORTED); #endif } + +void dump_drift_info(FILE *f, fprintf_function cpu_fprintf) +{ + if (!use_icount) { + return; + } + + cpu_fprintf(f, "Host - Guest clock %"PRIi64" ms\n", + (cpu_get_clock() - cpu_get_icount())/SCALE_MS); + if (icount_align_option) { + cpu_fprintf(f, "Max guest delay %"PRIi64" ms\n", -max_delay/SCALE_MS); + cpu_fprintf(f, "Max guest advance %"PRIi64" ms\n", max_advance/SCALE_MS); + } else { + cpu_fprintf(f, "Max guest delay NA\n"); + cpu_fprintf(f, "Max guest advance NA\n"); + } +} diff --git a/include/qemu-common.h b/include/qemu-common.h index 5d10ac27a1..bcf7a6ad43 100644 --- a/include/qemu-common.h +++ b/include/qemu-common.h @@ -109,6 +109,10 @@ static inline char *realpath(const char *path, char *resolved_path) void configure_icount(QemuOpts *opts, Error **errp); extern int use_icount; extern int icount_align_option; +/* drift information for info jit command */ +extern int64_t max_delay; +extern int64_t max_advance; +void dump_drift_info(FILE *f, fprintf_function cpu_fprintf); #include "qemu/osdep.h" #include "qemu/bswap.h" @@ -1047,6 +1047,7 @@ static void do_info_registers(Monitor *mon, const QDict *qdict) static void do_info_jit(Monitor *mon, const QDict *qdict) { dump_exec_info((FILE *)mon, monitor_fprintf); + dump_drift_info((FILE *)mon, monitor_fprintf); } static void do_info_history(Monitor *mon, const QDict *qdict) |