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Author SHA1 Message Date
Gregory Nutt
11a635dcb3 mm/iob: IOB free notifier should accept the work queue ID as a paramter. The notification may need to run on either the high- or low- priority work queue. sched/work: Change the default priority of the low-priority work queue to 100. 2018-09-11 08:49:39 -06:00
EunBong Song
91aa26774b This patch prevent heap corruption as in below case. 
TASK A                        TASK B
                              malloc()
                              mm_takesemaphore()
                              heap holder is set to TASK B
                         <--- preempt
...
task_exit()
Set to current task to
  TASK B
Try to release tcb, and
  stack memory
free()
mm_takesemaphore()
  - Successfully obtain
    semaphore because current
    task and heap holder is
    same.
Free memory....
Heap corrupt.

This change forces all de-allocations via sched_kfree() and sched_ufree()
to be delayed.  Eliminating the immediate de-allocation prevents the
above problem with the the re-entrant semaphore because the deallocation
always occurs on the worker thread, never on TASK B.

There could be consequences in the timing of memory availability.  We
will see.
 2018-09-11 08:17:33 -06:00
Xiang Xiao
c24fdb3ada configs: Fix build error caused by commit 459d9f2851 2018-09-11 07:24:29 -06:00
Gregory Nutt
af0ee3c8f7 sched/wqueue: Add an option to work queue notifier so that the notification can occur on different work queues. 2018-09-11 07:22:23 -06:00
Gregory Nutt
39df7ed0c0 mm/iob and sched/semaphore: Work around some issues with the IOB throttle semaphore. It has some odd behaviors that can cause assertions in sem_post(). Also, it seems to get outside of its range occasionally. Need to REVISIT this. 2018-09-10 11:32:09 -06:00
Gregory Nutt
53930763f4 sched/sched/sched_waitpid.c: Remove a bad error check. I though Juha already removed this problem. Did I lose his change? 2018-09-10 06:57:12 -06:00
Gregory Nutt
4cb61bd8c2 sched/wqueue: Notifier design cleanup. The original concept used pre-allocated notification data structures. However, the notification dat must persist for an indeterminate amount of time. So the design was modified to use dynamically allocted data structures. This commit simplifies the design by removed some residual 'machinery' that is no longer needed. 2018-09-10 06:29:51 -06:00
Jakob Haufe
fe4790ec18 Merged in sur5r/nuttx-nuttx/lpc43_eth_pins (pull request #717) 
arch/arm/src/lpc43xx: Fix ethernet TX_EN pin definitions

TX_EN on LPC43xx can be routed via P0.1 and PC.4 in both
MII and RMII mode.

Before, P0.1 was hardcoded for MII and PC.4 was hardcoded for RMII.

Also, the definitions used inconsistent naming (TXEN vs. TX_EN).

Approved-by: GregoryN <gnutt@nuttx.org>
 2018-09-10 11:56:52 +00:00
Gregory Nutt
09d5d05b95 net/TCP: Extend the TCP notification logic logic so that it will also report loss of connection events. 2018-09-09 17:32:10 -06:00
Gregory Nutt
9d3148406c Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue. 
Squashed commit of the following:

    Fix up some final compile isses.

    net/netdev:  Convert the network down notification logic to use the new wqueue-based notification factility.

    net/udp:  Convert the UDP readahead notification logic to use the new wqueue-based notification factility.

    net/tcp:  Convert the TCP readahead notification logic to use the new wqueue-based notification factility.

    mm/iob:  Convert the IOB notification logic to use the new wqueue-based notification factility.

    sched/wqueue:  Signals are not good IPCs to support the target poll functionality for several reasons including the amount of data that can be passed with a signal and in the fact that in protected and kernel modes, user threads executing signal handlers in protected, kernel memory is problematic.  Instead, convert the same logic to perform the notifications via function callback on the high priority work queue.
 2018-09-09 15:01:44 -06:00
Gregory Nutt
20814acad2 sched/signal: In signal notification facility, use sigqueue() to notify vs. kill(). With sigqueue, we can pass more info (but still not enough). 2018-09-09 11:57:25 -06:00
Gregory Nutt
32e3e51678 net/netdev: Add signal notification for the case where the network goes down. 2018-09-09 10:39:25 -06:00
Gregory Nutt
28f73bd928 net/tcp and udp: Add logic to signal events when TCP or UDP read-ahead data is buffered. 
Squashed commit of the following:

    net/tcp:  Add signal notification for the case when UDP read-ahead data is buffered.  This is basically of clone of the TCP notification logic with naming adapted for UDP.

    net/tcp:  Add signal notification for the case when TCP read-ahead data is buffered.
 2018-09-09 09:21:39 -06:00
Gregory Nutt
fc127fd297 sched/signal: Add a generic signal notification facility. Modify the custom IOB available notifier so that it is now just a wrapper around this generic signal notification. This generic signal notification faility will, eventually, be used to support network polling. 
Squashed commit of the following:

    mm/iob:  The IOB available notifier is now just a wrapper around the common signal notifier.

    sched/signal:  Add a generic signal notification facility.

    sched/signal/sig_evthread.c:  More trivial naming changes.

    sched/signal:  Rename nxsig_notification() to nxsig_evthread() to make forthcoming naming additions more consistent.
 2018-09-09 08:32:37 -06:00
Gregory Nutt
0eb1beee63 mm/iob: Improve the IOB notifier data structures. Replace the fixed array with a singly linked list. For small value of CONFIG_IOB_NWAITERS, either solution is fine. But the fixed array does not scale well when CONFIG_IOB_NWAITERS is large. 2018-09-08 17:47:43 -06:00
Gregory Nutt
5bd0f596fc Fix some trivial typos. 2018-09-08 16:53:12 -06:00
Gregory Nutt
bba8541ad6 mm/iob: Add an IOB notifier that will send a signal to any registered threads that want to be notified when an IOB has been freed. This is an untested work-in-progress and is intended to be a part of a larger solution to correctly handling network poll operations. 2018-09-08 11:21:18 -06:00
Gregory Nutt
ddaea5dabc Revise commit cce9ae94f4: The pass1/ directly only needs to be added to the directories to be cleaned. That would be OTHERDIRS vs. NONFSFIRS. Also remove old reference to the defunct lib directory (now the staging directory). 2018-09-08 08:28:02 -06:00
Gregory Nutt
cce9ae94f4 tools/Directories.mk: The pass1 directory was not being cleaned on 'make distclean' 2018-09-08 08:11:38 -06:00
Gregory Nutt
9479ad54f9 Update of Documents/NuttX.html in preparation for the 7.26 release. 2018-09-08 06:56:01 -06:00
Gregory Nutt
fa5822f255 Partial update of Documents/NuttX.html in preparation for the 7.26 release. There is still more to be done. 2018-09-07 15:35:45 -06:00
Gregory Nutt
bb5a6f372e Update ReleaseNotes in preparation for the 7.26 release. 2018-09-07 13:17:12 -06:00
Gregory Nutt
cbb9223f4e Update ChangeLog in preparation for 7.26 release. 2018-09-06 12:03:41 -06:00
Gregory Nutt
891b2646da configs/: apps/netutils/ping has been removed. Ping support is now provided by apps/system/ping. Remove references to -CONFIG_NETUTILS_PING or change them to CONFIG_SYSTEM_PING with CONFIG_NET_ICMP_SOCKET=y 2018-09-05 14:56:09 -06:00
Gregory Nutt
33e3fb7a70 Correct mispellings of pseudo. Update some comments in signal.h. 2018-09-05 11:56:14 -06:00
Goden Freemans
9348f600ee arch/arm/src/stm32l4: Add getstatus and getperiod method to the timer driver (includes coding standard changes made prior to commit) 2018-09-05 08:48:24 -06:00
Gregory Nutt
b7d1f13a54 b/sched/sched/sched_waitpid.c: Remove options check in DEBUG_FEATURES 2018-09-05 06:45:49 -06:00
Gregory Nutt
3611aefd14 tools/mkexport.sh: Save the name of the STRIP tool too. 2018-09-04 17:18:16 -06:00
Gregory Nutt
e88759e53d Update a README. 2018-09-04 16:48:34 -06:00
Gregory Nutt
b7726df9f7 tools/Makefile.unix: Was not cleaning up export directory if it was left from a failed export. configs/sama5d4-ek/README.txt: Update. 2018-09-04 13:19:17 -06:00
Juha Niskanen
069e9b899c arch/arm/src/stm32f7: Port the low-level PM functions to STM32F7. 2018-09-04 07:18:12 -06:00
Goden Freemans
b7bec7f064 configs/b-l475e-iot01a/src: Add timer driver support. 2018-09-04 07:13:03 -06:00
Gregory Nutt
820a6c4e39 configs/b-l475e-iot01a/src: Fix copy paste errors in names: stm32_bringup->stm32l4_bringup. Noted by Freemans Goden. 2018-09-04 06:54:58 -06:00
Gregory Nutt
ab5ebc5498 Revert "tools/KernelLibs.mk: Force libproxies to be built and installed before applications are build. Otherwise, the applications will not be able to find libproxies. I don't know why this was never seen before. Must be due to recent changes in the apps/ directory. The change is correct in any event." 
This reverts commit f7eee58aee.
 2018-09-03 16:27:54 -06:00
Gregory Nutt
f7eee58aee tools/KernelLibs.mk: Force libproxies to be built and installed before applications are build. Otherwise, the applications will not be able to find libproxies. I don't know why this was never seen before. Must be due to recent changes in the apps/ directory. The change is correct in any event. 2018-09-03 13:34:41 -06:00
Gregory Nutt
152ccbd447 configs/olimex-stm32-p407/dhtxx: Fix defconfig file. It was based on an older, incompatible version of NuttX. 2018-09-03 09:42:04 -06:00
Gregory Nutt
993321dda6 drivers/serial: Add support for Ctrl-Z. This works just like the recently added Ctrl-C support except that SIGSTP is sent when the Ctrl-Z characters is encountered vs. SIGINT. 2018-09-02 15:36:25 -06:00
Gregory Nutt
093348030e sched/: Update signal default STOP action. If waitpid was called with the WUNTRACED then wake up waitpid. Also fix some compile problems.. How did this work before? 2018-09-02 13:51:52 -06:00
Gregory Nutt
a6f9c6215d Update some comments 2018-09-02 12:34:45 -06:00
Gregory Nutt
5c5b6ab8f6 arch/arm/src/stm32h7: Remove old references to RXDMA. Add configuration option to select the Rx FIFO threshold level. 2018-09-02 08:35:22 -06:00
Gregory Nutt
ff1e6a66e9 configs/metro-m4: Fix problem with SysTick timer running too fast. This turned out to be a dumb typo in board.h that was providing the wrong CPU frequency to the SysTick setup logic. 2018-09-02 07:31:16 -06:00
Gregory Nutt
9f6383e5fd configs/metro-m4: Verify the CMCC and enable it by default in the NSH configuration. 2018-09-01 17:03:31 -06:00
Gregory Nutt
f66869b793 configs/metro-m4: Update the NSH configuration. 2018-09-01 15:58:24 -06:00
Gregory Nutt
aee1c39eab configs/metro-m4: Fix RxD interrupt pin selection. The number SERCOM interrupts do not refer to PAD numbers, but to bit positions in the INFLAG register (very tiny footnote in the data sheet). With with final fix, the basic NSH configuration appears fully functional. 2018-09-01 15:29:22 -06:00
Gregory Nutt
6ada0e10ba configs/metro-m4: Fix RxD PAD selection. Add a configuration option to use OSCULP32K instead of XOSC32K. 2018-09-01 14:38:19 -06:00
Gregory Nutt
1e4272a046 arch/arm/src/samd5e5: Correct some bad addresses in the memory map. 2018-09-01 11:15:16 -06:00
Gregory Nutt
e3d7fcf7ab arch/arm/src/samd5e5/sam_lowputc.c: Only the console USART was begin enabled. 2018-09-01 10:29:09 -06:00
Gregory Nutt
d88415083f Update a README. 2018-09-01 09:47:15 -06:00
Gregory Nutt
cecff14e34 Cosmetic updates to some comments 2018-09-01 07:50:10 -06:00
Ouss4
93c23a2c03 configs/olimex-stm32-p407: Add board support for the DHTxx sensor. 2018-09-01 07:36:01 -06:00