diff options
Diffstat (limited to 'src/console/printk.c')
| -rw-r--r-- | src/console/printk.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/console/printk.c b/src/console/printk.c index 15c599dce0..4f9f547bc5 100644 --- a/src/console/printk.c +++ b/src/console/printk.c @@ -21,14 +21,56 @@ #include <smp/node.h> #include <stddef.h> #include <trace.h> +#include <timer.h> #if (!defined(__PRE_RAM__) && CONFIG(HAVE_ROMSTAGE_CONSOLE_SPINLOCK)) || !CONFIG(HAVE_ROMSTAGE_CONSOLE_SPINLOCK) DECLARE_SPIN_LOCK(console_lock) #endif +#define TRACK_CONSOLE_TIME (CONFIG(HAVE_MONOTONIC_TIMER) && \ + (ENV_RAMSTAGE || !CONFIG(CAR_GLOBAL_MIGRATION))) + +static struct mono_time mt_start, mt_stop; +static long console_usecs; + +static void console_time_run(void) +{ + if (TRACK_CONSOLE_TIME) + timer_monotonic_get(&mt_start); +} + +static void console_time_stop(void) +{ + if (TRACK_CONSOLE_TIME) { + timer_monotonic_get(&mt_stop); + console_usecs += mono_time_diff_microseconds(&mt_start, &mt_stop); + } +} + +void console_time_report(void) +{ + if (!TRACK_CONSOLE_TIME) + return; + + printk(BIOS_DEBUG, "Accumulated console time in " ENV_STRING " %ld ms\n", + DIV_ROUND_CLOSEST(console_usecs, USECS_PER_MSEC)); +} + +long console_time_get_and_reset(void) +{ + if (!TRACK_CONSOLE_TIME) + return 0; + + long elapsed = console_usecs; + console_usecs = 0; + return elapsed; +} + void do_putchar(unsigned char byte) { + console_time_run(); console_tx_byte(byte); + console_time_stop(); } static void wrap_putchar(unsigned char byte, void *data) @@ -61,6 +103,8 @@ int do_vprintk(int msg_level, const char *fmt, va_list args) spin_lock(&console_lock); #endif + console_time_run(); + if (log_this == CONSOLE_LOG_FAST) { i = vtxprintf(wrap_putchar_cbmemc, fmt, args, NULL); } else { @@ -68,6 +112,8 @@ int do_vprintk(int msg_level, const char *fmt, va_list args) console_tx_flush(); } + console_time_stop(); + #ifdef __PRE_RAM__ #if CONFIG(HAVE_ROMSTAGE_CONSOLE_SPINLOCK) spin_unlock(romstage_console_lock()); |