reason:
svc call may trigger hardfault
Background
The origin of this issue is our desire to eliminate the function of storing
"regs" in g_current_regs and instead utilize (*running_task)->xcp.regs for storage.
The benefits of this approach include faster storage speed and
avoiding multiple accesses to g_current_regs during context switching,
thus ensuring that whether returning from an interrupt or an exception,
we consistently use this_task()->xcp.regs
Issue Encountered
However, when storing registers, we must ensure that (running_task)->xcp.regs is invalid
so that it can be safely overwritten.
According to the existing logic, the only scenario where (running_task)->xcp.regs
is valid is during restore_context. We must accurately identify this scenario.
Initially, we used the condition (running_task)==NULL for this purpose, but we deemed
this approach unsatisfactory as it did not align well with the actual logic.
(running_task) should not be NULL. Consequently, we adopted other arch-specific methods for judgment,
but due to special logic in some arch, the judgment was not accurate, leading to this issue.
Solution:
For armv6-m, we haven't found a more suitable solution, so we are sticking with (*running_task)==NULL.
For armv7-m/armv8-m, by removing support for primask, we can achieve accurate judgment.
PRIMASK is a design in armv6-m, that's why arm introduce BASEPRI from armv7-m.
It's wrong to provide this option for armv7-m/armv8-m arch.
Signed-off-by: hujun5 <hujun5@xiaomi.com>
since the related code was removed by:
commit 4d5a964f29
Author: Jiuzhu Dong <dongjiuzhu1@xiaomi.com>
Date: Tue Feb 23 18:04:13 2021 +0800
net: unify socket into file descriptor
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Summary:
- This commits adjusts the following settings for spresense
- CONFIG_FAT_MAXFNAME : 255 to 128
- CONFIG_NAME_MAX : 765 to 128
Impact:
- None
Testing:
- Tested with spresense:wifi_smp
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
several configs are used for testing and need the BSD components
more information about license can be found here
https://www.apache.org/legal/resolved.html#category-a
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Summary:
- This commit adds CONFIG_NET_TCP_WRITE_BUFFERS=y to
rndis and rndis_smp defconfigs
Impact:
- webserver performance will be improved
Testing:
- Tested with nxplayer, telnetd, webserver, iperf
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Summary:
- I noticed that Telnet session is sometimes not closed
when tested with nxplayer + command stress test
- The symptom relates to the change of IOB throttling in TCP
but we are still finding the root cause.
- This commit is just a workaround to avoid the issue by
disabling telnet character mode.
Impact:
- spresense:rndis, spresense:rndis_smp only
Testing:
- Tested with nxplayer (HTTP audio streaming) + command stress test
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Summary:
- This commit removes CONFIG_LIBM from defconfigs to use libm for gcc
Impact:
- Applications which use the math library
Testing:
- Tested with spresense:wifi_smp
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Summary:
- This commit adds iperf to rndis and rndis_smp defcofigs
Impact:
- rndis and rndis_smp
Testing:
- Tested with iperf
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
1.Reduce the default size of task_group_s(~512B each task)
2.Scale better between simple and complex application
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ia872137504fddcf64d89c48d6f0593d76d582710
to save the preserved space(1KB) and also avoid the heap overhead
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I694073f68e1bd63960cedeea1ddec441437be025
Change the preallocated message and descriptor from 32/24 to 4.
The total size is reduce from 1892 to 532
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I79d199465daef678986868f773876289859f42fc
since the maximum number of argument pass to wd_start in the whole
code base is 2 and change CONFIG_MAX_WDOGPARMS in some defconfig
from 1 to 2 oherwise pthread_condclockwait will fail
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ib6cb28b8c0722058849e7be916e164513431d21c
- Add new functions of GNSS
- Support the lower PWM frequency
- Add CONFIG_CPUFREQ_RELEASE_LOCK
- Add high speed ADC support
- Add HPADC input gain configuration
- Add eMMC device
- Frame buffer support
- Fix SD/GNSS/sensor drivers not worked
- Build errors
- Fix nxstyle issues
since cxx initialization is controlled by CONFIG_HAVE_CXXINITIALIZE now
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: I39438dc3006d0a0b810052ecef50cd3c92f09d83
CONFIG_FAT_MAXFNAME is set to 255 and CONFIG_NAME_MAX is set to 765
which can support max file name including Japanese characters.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
