diff options
| author | Kyösti Mälkki <kyosti.malkki@gmail.com> | 2019-11-02 14:12:18 +0200 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2019-11-11 10:31:29 +0000 |
| commit | 45ddb4344f73051855da6d4e87a5ba4b4c66af71 (patch) | |
| tree | 1a62d88791bb5ff4ead56d395925829b69a84e54 /src/console | |
| parent | 19825e8e375d1c4d0448e7ffe3bb2e2c230c9eea (diff) | |
console,boot_state: Exclude printk() from reported times
Use monotonic timer to accumulate the time spent in
console code.
For bootblock and romstage, only stage total is reported.
For ramstage each boot_state is reported individually.
Change-Id: Id3998bab553ff803a93257a3f2c7bfea44c31729
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/36574
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Diffstat (limited to 'src/console')
| -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()); |