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6893843cc5
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1095 Commits

Author SHA1 Message Date
Gregory Nutt
6893843cc5 sched/semaphore: Fix a warning aout an unused variable when priority inheritance is enabled. 2017-03-21 13:47:56 -06:00
Gregory Nutt
e8e3c2f362 sched/semaphore: Convert strange use of DEBUGASSERT to DEBUGPANIC. 2017-03-21 13:34:17 -06:00
David Sidrane
d76157db7b sem_holder:Clean up from Review 
Spelling and backward DEBUGASSERT along with one gem

  if (sem->holder[0].htcb != NULL || sem->holder[**1**].htcb != NULL)
 2017-03-21 08:03:06 -10:00
David Sidrane
7601a27cee sem_holder:The logic for the list version is unchanged 2017-03-16 14:16:18 -10:00
David Sidrane
3cc2a4f7c9 sem_holder: Fixes improper restoration of base_priority 
in the case of CONFIG_SEM_PREALLOCHOLDERS=0

   The call to sem_restorebaseprio_task context switches in the
   sem_foreachholder(sem, sem_restoreholderprioB, stcb); call
   prior to releasing the holder. So the running task is left
   as a holder as is the started task. Leaving both slots filled
   Thus failing to perforem the boost/or restoration on the
   correct tcb.

   This PR fixes this by releasing the running task slot prior
   to reprioritization that can lead to the context switch.
   To faclitate this, the interface to sem_restorebaseprio
   needed to take the tcb from the holder prior to the
   holder being freed. In the failure case where sched_verifytcb
   fails it added the overhead of looking up the holder.

   There is also the adfitinal thunking on the foreach to
   get from holer to holder->tcb.

   An alternate approach could be to leve the interface the same
   and allocate a holder on the stack of sem_restoreholderprioB
   copy the sem's holder to it, free it as is done in this pr
   and and then pass that address sem_restoreholderprio as the
   holder. It could then get the holder's tcb but we would
   keep the same sem_findholder in sched_verifytcb.
 2017-03-15 17:12:45 -10:00
David Sidrane
55fb9645a7 Guard from pend_reprios overlow 2017-03-15 07:42:55 -10:00
David Sidrane
caf8bac7fb missing semi 2017-03-13 22:54:13 +00:00
David Sidrane
d66fd9f965 semaphore:sem_boostholderprio prevent overrun of pend_reprios 
The second case rtcb->sched_priority <= htcb->sched_priority
  did not check if there is sufficient space in the pend_reprios
  array.
 2017-03-13 12:34:39 -10:00
David Sidrane
3c00651cfe semaphore:sem_holder sem_findholder missing inintalization of pholder 
sem_findholder would fail and code optimization coverd this up.
 2017-03-13 11:56:31 -10:00
David Sidrane
4d760c5ea4 semaphore:sem_holder add DEBUGASSERT s 2017-03-13 10:46:26 -10:00
Gregory Nutt
399f306744 A few cosmetic changes 2017-03-11 08:58:42 -06:00
David Sidrane
6cc8f9100b Priority Inversion fixes:typo 2017-03-10 06:37:46 -10:00
Gregory Nutt
360539afac Priority inheritance: When CONFIG_SEM_PREALLOCHOLDERS==0, there is only a single, hard-allocated holder structure. This is problem because in sem_wait() the holder is released, but needs to remain in the holder container until sem_restorebaseprio() is called. The call to sem_restorebaseprio() must be one of the last things the sem_wait() does because it can cause the task to be suspended. If in sem_wait(), a new task gets the semaphore count then it will fail to allocate the holder and will not participate in priority inheritance. This fix is to add two hard-allocated holders in the sem_t structure: One of the old holder and one for the new holder. 2017-03-10 09:30:15 -06:00
Gregory Nutt
a93e46d00c Cosmetic 2017-03-10 08:54:50 -06:00
Gregory Nutt
c976a66f8d net/drivers/skeleton.c: Back out serialization changes of the last commit. They are not necessary in the skeleton.c example because the calls to net_lock() at the beginning of each worker function will enforce serialization. 2017-03-04 11:33:36 -06:00
Gregory Nutt
b55a98e900 Olimex-STM32-P407: Enable task names 2017-03-04 08:49:24 -06:00
Gregory Nutt
47ebe1e320 Update some comments 2017-03-03 12:48:58 -06:00
Gregory Nutt
e1218c4b4b Smaller vector tables: Add irq_mapped_t. 2017-03-03 10:20:40 -06:00
Gregory Nutt
04c9ccdd2d Update TODO list and some Kconfig comments. 2017-03-03 09:20:25 -06:00
Gregory Nutt
c2b620b4f8 Implements support for smaller interrupt tables as described at http://www.nuttx.org/doku.php?id=wiki:howtos:smallvectors . This is largely the work of Mark Schulte. However, I have made several changes to match with the Wiki document. If you like the change, thanks go to Marc. For any errors you can blame me. 2017-03-03 09:20:25 -06:00
Masayuki Ishikawa
d78113e4ad Revert "CONFIG_START_YEAR/MONTH/DAY not required if an RTC is used" 
This reverts commit 4035ed8c6c.
 2017-03-03 10:42:10 +09:00
Masayuki Ishikawa
54b1f5ce2a Merged in masayuki2009/nuttx.nuttx/remove_unused_variable (pull request #233) 
Remove unused variable

Approved-by: Gregory Nutt
 2017-03-02 12:39:32 +00:00
Gregory Nutt
094795e0ed Review parameter usage in sigtimedwait(); update some comments. 2017-03-02 06:39:05 -06:00
Masayuki Ishikawa
237e041fba Remove an unused variable when calling sigwaitinfo() 2017-03-02 13:14:00 +09:00
Masayuki Ishikawa
4043239cfc Remove an unused variable when calling sigtimedwait() 2017-03-02 13:13:53 +09:00
Gregory Nutt
02b1e1ec1a Fixes for coding standard: '*' needs to 'snuggle' with following variable name 2017-02-28 18:22:57 -06:00
Gregory Nutt
840c5935a3 Correct a typo from one of the preceding commits. 2017-02-27 11:58:20 -06:00
Mark Schulte
b3222bbc8a irq_dispatch: Add argument pointer to irq_dispatch 
Provide a user defined callback context for irq's, such that when
registering a callback users can provide a pointer that will get
passed back when the isr is called.
 2017-02-27 06:27:56 -06:00
Gregory Nutt
4dbc0a27c6 pthread_create: g_pthreadname[] is not used if CONFIG_TASK_NAME_SIZE==0. 2017-02-26 18:15:16 -06:00
Gregory Nutt
12a4a58aa6 Update some wdog-related comments 2017-02-24 10:58:37 -06:00
Gregory Nutt
dca77fa06a sigtimedwait: When timer expires, up_unblock_task() is called. This is okay in the single CPU case because interrupts are disable in the timer interrupt handler. But it is insufficient in the SMP case. enter_ and leave_critical_section() must be called in order to manage spinlocks correctly. 2017-02-24 10:07:23 -06:00
Gregory Nutt
cb7c5f9921 Implement strings.h macros as inline functions when possible for better C++ compatibility. 2017-02-22 10:20:58 -06:00
Gregory Nutt
4f5879f998 C library: Add ffs(). Add strings.h. Move strcasecmp, strncasecmp, bzero, bcmp, and bcopy to where they belong in strings.h.h, not string.h. bzero, bcmp, and bcopy are legacy functions; the contemporary counterparts should be used instead. 2017-02-16 16:10:09 -06:00
Gregory Nutt
74189d84e2 Cancellation points: Fix some backward logic in conditional compilation. 2017-02-02 06:42:41 -06:00
Gregory Nutt
e0f199e42e Missing semicolon in previous commit 2017-01-31 14:18:20 -06:00
Gregory Nutt
154873a3d0 Timer logic: Add private function prototypes to eliminate a warning; Functions should not be inline because the may recurse. 2017-01-31 13:45:22 -06:00
Gregory Nutt
e30b2617e3 Shared Libs: Implement module based shared libraries for the PROTECTED mode build 2017-01-29 13:03:53 -06:00
Gregory Nutt
2c45f482b1 Module names are not needed in libc/modlib when the module library is used only for shared library support. 2017-01-29 12:23:24 -06:00
Gregory Nutt
86bdd0a4c7 Modules: Move last of many C files from sched/module to libc/modlib 2017-01-29 11:54:54 -06:00
Gregory Nutt
6da66fb5c8 Modules: Move next five of many C files from sched/module to libc/modlib 2017-01-29 11:17:29 -06:00
Gregory Nutt
5e94dd22bb Modules: Move first five of many C files from sched/module to libc/modlib 2017-01-29 10:05:15 -06:00
Gregory Nutt
00e46b5966 Move gnu-elf.ld from sched/module to libc/modlib. Update paths in Make.defs files to account for new location of file 2017-01-29 09:03:01 -06:00
Gregory Nutt
2717e781f0 libc/modlib: Add build a configuration logic for a shared module library. 2017-01-29 08:55:27 -06:00
Gregory Nutt
b79ca9dcdd Modules: Move sched/module/module.h to include/nuttx/lib/modlib.h 2017-01-29 08:24:42 -06:00
Gregory Nutt
68a7110195 sched/modules: Add support for dependencies between modules. 2017-01-27 11:43:27 -06:00
Gregory Nutt
6a4880f415 SMP: Fix timer related issues: Round robin and sporadic scheduling were only being performed for tasks running on the CPU that processes the system timer interrupt. Similary, CPU load measurements were only be processed for running on the CPU that receives the sampling interrupt. 2017-01-23 12:14:01 -06:00
Gregory Nutt
4574a1ca42 Modules: Extend the module interface so that we can access symbols exported by the module. 2017-01-22 14:26:22 -06:00
Gregory Nutt
d90e66a024 Kernel Modules: Module initializer may now return a symbol table (not yet used for anything) 2017-01-22 11:37:49 -06:00
Gregory Nutt
1823c78663 Update some comments 2017-01-22 10:17:51 -06:00
Gregory Nutt
686041f8e7 CPU load: Correct computation of the nominal period to use when the source is a oneshot timer. 2017-01-22 07:12:22 -06:00