FreeCalypso > hg > freecalypso-tools
changeset 609:ffd606adb039
CHANGES: libserial ASYNC_LOW_LATENCY change documented
| author | Mychaela Falconia <falcon@freecalypso.org> |
|---|---|
| date | Sat, 22 Feb 2020 19:07:46 +0000 |
| parents | 9d9c241f2c84 |
| children | 98474043ecdd |
| files | CHANGES |
| diffstat | 1 files changed, 9 insertions(+), 0 deletions(-) [+] |
line wrap: on
line diff
--- a/CHANGES Wed Feb 12 06:23:22 2020 +0000 +++ b/CHANGES Sat Feb 22 19:07:46 2020 +0000 @@ -1,5 +1,14 @@ Changes in the current code since fc-host-tools-r11: +* In an attempt to be nicer to those users who prefer to run newer Linux kernel + versions than the Mother's own preference for older host systems, our default + Linux version of libserial (the serial port access library underlying all of + our tools) now sets the ASYNC_LOW_LATENCY flag in TIOCSSERIAL. Prior to this + change, poor performance has been observed on newer Linux host systems where + the select system call waiting for serial input would wait some extra 10 ms + before returning, majorly slowing down many of our operations. The present + change is hoped to alleviate that problem. + * fc-loadtool: added support for Spansion S29/S71PL032J and S29/S71PL064J flash chips found in some modem modules; historical flash chip Am29DL640G is also supported as it is identical to S29PL064J for our purposes.