diff options
| author | Simon Glass <sjg@chromium.org> | 2017-05-22 05:05:27 -0600 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-06-05 14:13:05 -0400 |
| commit | 03ecac314988c01c3df0c935afaacc8fce229224 (patch) | |
| tree | 4affe3e2698cce4a4248b0867980b202be752049 /common/Kconfig | |
| parent | cbcd6970ad802b8b6c5acf79d42a870256b62fbb (diff) | |
| download | u-boot-03ecac314988c01c3df0c935afaacc8fce229224.tar.gz | |
bootstage: Use rec_count as the array index
At present bootstage has a large array with all possible bootstage IDs
recorded. It adds times to the array element indexed by the ID. This is
inefficient because many IDs are not used during boot. We can save space
by only recording those IDs which actually have timestamps.
Update the array to use a record count, which increments with each
addition of a new timestamp. This takes longer to record a time, since it
may involve an array search. Such a search may be particularly expensive
before relocation when the CPU is running slowly or the cache is off. But
at that stage there should be very few records.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'common/Kconfig')
| -rw-r--r-- | common/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/common/Kconfig b/common/Kconfig index 3b85bf49a8..a3094d984f 100644 --- a/common/Kconfig +++ b/common/Kconfig @@ -46,6 +46,13 @@ config BOOTSTAGE_USER_COUNT a new ID will be allocated from this stash. If you exceed the limit, recording will stop. +config BOOTSTAGE_RECORD_COUNT + int "Number of boot stage records to store" + default 30 + help + This is the size of the bootstage record list and is the maximum + number of bootstage records that can be recorded. + config BOOTSTAGE_FDT bool "Store boot timing information in the OS device tree" depends on BOOTSTAGE |