diff options
| -rw-r--r-- | src/lib/hardwaremain.c | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/src/lib/hardwaremain.c b/src/lib/hardwaremain.c index ed2a516372..7bf0237f91 100644 --- a/src/lib/hardwaremain.c +++ b/src/lib/hardwaremain.c @@ -37,6 +37,7 @@ #if CONFIG_HAVE_ACPI_RESUME #include <arch/acpi.h> #endif +#include <timer.h> #include <timestamp.h> #if BOOT_STATE_DEBUG @@ -58,6 +59,19 @@ static boot_state_t bs_write_tables(void *arg); static boot_state_t bs_payload_load(void *arg); static boot_state_t bs_payload_boot(void *arg); +/* + * Typically a state will take 4 time samples: + * 1. Before state entry callbacks + * 2. After state entry callbacks / Before state function. + * 3. After state function / Before state exit callbacks. + * 4. After state exit callbacks. + */ +#define MAX_TIME_SAMPLES 4 +struct boot_state_times { + int num_samples; + struct mono_time samples[MAX_TIME_SAMPLES]; +}; + struct boot_state { const char *name; boot_state_t id; @@ -65,6 +79,9 @@ struct boot_state { boot_state_t (*run_state)(void *arg); void *arg; int complete; +#if CONFIG_HAVE_MONOTONIC_TIMER + struct boot_state_times times; +#endif }; #define BS_INIT(state_, run_func_) \ @@ -228,6 +245,39 @@ static boot_state_t bs_payload_boot(void *entry) return BS_PAYLOAD_BOOT; } +#if CONFIG_HAVE_MONOTONIC_TIMER +static void bs_sample_time(struct boot_state *state) +{ + struct mono_time *mt; + + mt = &state->times.samples[state->times.num_samples]; + timer_monotonic_get(mt); + state->times.num_samples++; +} + +static void bs_report_time(struct boot_state *state) +{ + struct rela_time entry_time; + struct rela_time run_time; + struct rela_time exit_time; + struct boot_state_times *times; + + times = &state->times; + entry_time = mono_time_diff(×->samples[0], ×->samples[1]); + run_time = mono_time_diff(×->samples[1], ×->samples[2]); + exit_time = mono_time_diff(×->samples[2], ×->samples[3]); + + printk(BIOS_DEBUG, "BS: %s times (us): entry %ld run %ld exit %ld\n", + state->name, + rela_time_in_microseconds(&entry_time), + rela_time_in_microseconds(&run_time), + rela_time_in_microseconds(&exit_time)); +} +#else +static inline void bs_sample_time(struct boot_state *state) {} +static inline void bs_report_time(struct boot_state *state) {} +#endif + static void bs_call_callbacks(struct boot_state *state, boot_state_sequence_t seq) { @@ -262,13 +312,25 @@ static void bs_walk_state_machine(boot_state_t current_state_id) } printk(BS_DEBUG_LVL, "BS: Entering %s state.\n", state->name); + + bs_sample_time(state); + bs_call_callbacks(state, BS_ON_ENTRY); + bs_sample_time(state); + current_state_id = state->run_state(state->arg); printk(BS_DEBUG_LVL, "BS: Exiting %s state.\n", state->name); + + bs_sample_time(state); + bs_call_callbacks(state, BS_ON_EXIT); + bs_sample_time(state); + + bs_report_time(state); + state->complete = 1; } } |