scottk/OpenCellular
1
0
Fork 0
mirror of https://github.com/Telecominfraproject/OpenCellular.git synced 2025-12-29 18:11:05 +00:00
Code Issues Packages Projects Releases Wiki Activity

stm32f0: Change idle task warning printf to save stack space

Browse Source 
Change the idle task overslept warning printf to save stack space.
The current warning uses CPRINTF which adds too much to the stack
and overflows the idle stack.

BUG=chrome-os-partner:33138, chrome-os-partner:36636
BRANCH=samus
TEST=comment out the if (margin_us < 0) check and always print
warning message. Without this CL stack overflows. With this CL,
stack does not overflow and gets to 168/256, which is plenty of
headroom considering the task doesn't do much.

Change-Id: I19a8336b8584d2a1342e7b9290aad471d326a060
Signed-off-by: Alec Berg <alecaberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/250300
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Alec Berg
2015-02-16 10:05:07 -08:00
committed by ChromeOS Commit Bot
parent ada0cc90a4
commit 2e6bee5642
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
chip/stm32/clock-stm32f0.c
View File

@@ -397,7 +397,8 @@ void __idle(void)
/* Calculate how close we were to missing deadline */
margin_us = next_delay - rtc_diff;
if (margin_us < 0)
CPRINTS("overslept by %dus", -margin_us);
/* Use CPUTS to save stack space */
CPUTS("Idle overslept!\n");
/* Record the closest to missing a deadline. */
if (margin_us < dsleep_recovery_margin_us)