a2e62f557d
Squashed commit of the following:
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sched/init/nx_bringup.c: Fix a naming collision.
sched/init: Rename os_start() to nx_start()
sched/init: Rename os_smp* to nx_smp*
sched/init: Rename os_bringup to nx_bringup
sched/init: rename all internal static functions to begin with nx_ vs os_
2019-02-04 16:20:35 -06:00
e57f7cf6ae
Critical Section Monitor (sched/ and fs/procfs: Remove SCHED_IRQMONITOR_GETTIME to simplify the clock source selection: (1) Use up_critmon_gettime if SCHED_IRQMONITOR, (2) Call clock_systimespec if SCHED_TICKLESS, (3) Don't collect timing info for all other cases and move up_critmon_* to arch.h avoid the duplicated declaration.
2019-01-27 10:13:28 -06:00
5433ec589b
fs/driver/fs_blockpartition.c: Fix void pointer warning.
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libs/libc/unistd/lib_daemon.c: Fix compiler error is streams disabled.
sched/irq/irq_procfs.c: Fix warning
sched/task/task_vfork.c: Fix void * math warning
2018-12-03 17:54:21 -06:00
d8cf3bfe25
Rethink some of the conditional logic of commit 1ac95584603258402ea4e9c48977e52f494f4c77: If the Critical Section Monitor enabled, that that platform-specific timer should be used to measure interrupt processing time, no matter what.
2018-11-26 12:18:58 -06:00
553c566650
sched/irq: Include a few ProcFS-related changes missed in commit 1ac9558460
2018-11-26 12:01:36 -06:00
1ac9558460
sched/irq and sched/sched: Measurement of interrupt handler duration used to be available only in Tickless mode since it used the high resolution Tickless timer to measure interrupt time. This commit adds CONFIG_SCHED_IRQMONITOR_GETTIME which, if enabled, will force the interrupt duration caculation to use the same high-resolution, platform-specific timer as is used with the Critical Section Monitor. This leads to two improvements: (1) You can now measure interrupt duration in non-Tickless mode, and (2) in either mode, the interrupt duration and the critical section measures will use the same high-resulotion timer and should, therefore, never be any descripancy due to different clock sources.
2018-11-26 11:29:20 -06:00
80e7107c9f
sched/irq/Make.defs: Fix warning about irq_csection.o appearing multiple times in the same rule.
2018-11-25 17:22:33 -06:00
4ca7b72a98
sched/Kconfig: Simplify some configurations. This adds configuration settings that control individual features, rather than long complex OR expressions that determines if an individual feature is required.
2018-11-25 11:50:15 -06:00
807d5bb4ae
Critical Section Monitor: Add low level timer support for simulation. Fix serial bugs and logic errors in initial implementation. Still does not work; takes assertions.
2018-11-24 15:07:12 -06:00
fc6084f311
Squashed commit of the following:
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fs/procfs/fs_procfsproc: Extended the process ID ProcFS output to show per-thread maximum time for pre-emption disabled and maximum time within a critical section.
sched/sched/sched_critmonitor.c: Adds data collection logic in support of monitoring critical sections and pre-emption state.
2018-11-24 10:32:45 -06:00
dbf01d12b7
Assertions: Identify the running task correctly when dumping task state information. It takes time to switch to the target task after g_readytorun has been modified. If panic/assert happen during this period, the dump will contain the incorrect and confusing information due to the difference between the real running task and the return value of this_task(). This change resolve this problem by adding g_running_task to track the real running task through the context switch.
2018-11-15 07:11:51 -06:00
a7265d71c6
This commit adds support for default signal actions for SIGSTOP, SIGSTP, and SIGCONT.
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Squashed commit of the following:
Add procfs support to show stopped tasks. Add nxsig_action() to solve a chicken and egg problem: We needed to use sigaction to set default actions, but sigaction() would refuse to set actions if the default actions could not be caught or ignored.
sched/signal: Add configuration option to selectively enabled/disable default signal actions for SIGSTOP/SIGSTP/SIGCONT and SIGKILL/SIGINT. Fix some compilation issues.
sched/sched: Okay.. I figured out a way to handle state changes that may occur while they were stopped. If a task/thread was already blocked when SIGSTOP/SIGSTP was received, it will restart in the running state. I will appear that to the task/thread that the blocked condition was interrupt by a signal and returns the EINTR error.
sched/group and sched/sched: Finish framework for continue/resume logic.
sched/signal: Roughing out basic structure to support task suspend/resume
2018-08-30 10:27:18 -06:00
73c73af777
sched/irq/irq_dispatch.c: Fix my typo that was added while reviewing Xiang's changne.
2018-08-29 07:13:26 -06:00
347d10497c
sched/irq/irq_dispatch.c: Fix error 'ndx undeclared'
2018-08-29 06:10:52 -06:00
c9b24615a6
sched/irq: Monitor the irq execution time. This is very useful for measuring the interrupt latency.
2018-08-25 07:12:21 -06:00
38452007a3
sched/irq/irq_dispatch.c: Fix an error found in build testing.
2018-08-24 16:12:31 -06:00
2aa208ccf0
sched/irq/irq_procfs.c: Fix occasional computation error when fracpart >= 1000
2018-08-24 15:16:11 -06:00
d38be46655
sched/irq: Add support interrupt chains in NuttX. IRQ chain is very useful in these cases: (1) Multiple hardware connect to the same request line(e.g. PCI), (2) Need multiple driver to support one hardware block (like Linux MFD)
2018-08-24 15:10:23 -06:00
6cb606d42b
sched/irq/irq_dispatch.c: Ensure vector never points to NULL since interrupt may happen before irq_initialize()
2018-08-24 15:01:32 -06:00
e1202d2ed3
Replace all ASSERT with DEBUGASSERT to save the code space
2018-08-24 06:58:30 -06:00
8fdbb1e0a4
Elimate use of the non-standard type systime_t and replace it the equivalent, standard type clock_t
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Squashed commit of the following:
sched: Rename all use of system_t to clock_t.
syscall: Rename all use of system_t to clock_t.
net: Rename all use of system_t to clock_t.
libs: Rename all use of system_t to clock_t.
fs: Rename all use of system_t to clock_t.
drivers: Rename all use of system_t to clock_t.
arch: Rename all use of system_t to clock_t.
include: Remove definition of systime_t; rename all use of system_t to clock_t.
2018-06-16 12:16:13 -06:00
97ca4ef956
Merged in masayuki2009/nuttx.nuttx/change_copyright (pull request #621 )
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Change all Sony related copyright to conform with our company's internal rules.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
2018-04-04 12:35:47 +00:00
50ab5d638a
sched/task: It is not appropriate for logic in task_exit() to call the new version of this_task(). sched/irq: Remove redundant fetch of CPU index; configs/sabre-6qguad: update README.
2018-02-06 19:06:33 -06:00
0ba7853016
sched/irq: Fix a infinite recursion problem that a recent change introduced into the i.MX6 SMP implementation.
2018-02-06 09:18:03 -06:00
56bb76caca
sched/irq: Fix an error in a assertion introduced in commit 37c9b3d54a. Noted by Masayuki Ishikawa.
2018-02-05 21:13:42 -06:00
b884fb9fed
sched/sched: Extend the last global lock change to work with the lc823450-xgevk which does not support the atomic fetch add but does support disabling interprocessor interrupts. Disabling interprocessor interrupts will also guarantee that the TCB addres calculation is atomic.
2018-02-05 13:32:09 -06:00
37c9b3d54a
sched/sched: Implements a global scheduler lock capability as part of SMP support. This allows the scheduler to be locked with no knowledge or access to the TCB of the currently running task. This is necessary because accessing the TCB of the currenlty running task is, itself, a non-atomic operation. This global scheduler lock cpability was add just to support that atomic access to the TCB.
2018-02-05 13:12:36 -06:00
5beab6fbf0
spin_lock_irqsave() and spin_unlock_irqrestore() are only valid if the CPU supports global disabling of interrupts.
2018-02-04 15:41:22 -06:00
fad70bf90e
Update some comments
2018-02-03 09:35:46 -06:00
7cf88d7dbd
Make sure that labeling is used consistently in all function headers.
2018-02-01 10:00:02 -06:00
12e3e47d3c
Update comments, mostly spelling errors.
2018-01-27 09:37:46 -06:00
0080225473
sched/irq: Add a configuration option to show interrupt information via a procfs file.
2018-01-12 18:26:46 -06:00
b2adb4917f
arch/arm/src/lpc54xx: Add register level debug output for Ethernet testing. Fixed a few start up problems. Still hangs on start-up, however.
2017-12-31 11:11:57 -06:00
6150299f54
Merged in masayuki2009/nuttx.nuttx/irq_spinlock (pull request #550 )
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SMP: Introduce spin_lock_irqsave() and spin_unlock_irqrestore()
These APIs are simplified version of enter_critical_section() and
leave_critical_section() to protect data (e.g. registers) in SMP mode.
By using these APIs inside drivers, performace will be improved.
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
2017-12-07 19:39:04 +00:00
b274a97840
Miscellaneous fixes from astyle tool.
2017-08-14 17:19:27 -06:00
dffb8a67e3
Add entropy pool and strong random number generator
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Entropy pool gathers environmental noise from device drivers, user-space, etc., and returns good random numbers, suitable for cryptographic use. Based on entropy pool design from *BSDs and uses BLAKE2Xs algorithm for CSPRNG output.
Patch also adds /dev/urandom support for using entropy pool RNG and new 'getrandom' system call for getting randomness without file-descriptor usage (thus avoiding file-descriptor exhaustion attacks). The 'getrandom' interface is similar as 'getentropy' and 'getrandom' available on OpenBSD and Linux respectively.
2017-03-30 07:38:37 -06:00
e1218c4b4b
Smaller vector tables: Add irq_mapped_t.
2017-03-03 10:20:40 -06:00
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
02b1e1ec1a
Fixes for coding standard: '*' needs to 'snuggle' with following variable name
2017-02-28 18:22:57 -06:00
840c5935a3
Correct a typo from one of the preceding commits.
2017-02-27 11:58:20 -06:00
b3222bbc8a
irq_dispatch: Add argument pointer to irq_dispatch
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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
9ce4022096
SMP: Fix an error in critical section logic when performing a context switch from an interrupt handler. The g_cpu_irqset bit was not being set for the CPU so other CPUs did not know about the critical section.
2017-01-13 06:48:10 -06:00
e7d2b9f0e8
SMP: Move sharable function to common file as irq_cpu_locked(). Use irq_cpu_locked() in sched_unlock()
2016-12-29 08:17:10 -06:00
96394f339e
SMP: Fix a gap where we may try to make modifications to the task lists without being in a critical sections. That permits concurrent access to the tasks lists and many subtle problems. This fix just remains in the critical section throughout the operation (and possible until the task is restore in the event of a context switch). Makes a big difference in stability
2016-12-28 13:58:24 -06:00
849a5dc2a9
SMP: Enforce this rule: Tasks which are normally restored when sched_unlock() is called must remain pending (1) if we are in a critical section, i.e., g_cpu_irqlock is locked , or (2) other CPUs still have pre-emption disabled, i.e., g_cpu_schedlock is locked. In those cases, the release of the pending tasks must be deferred until those conditions are met.
2016-12-26 08:15:02 -06:00
d45a81d643
Revert "SMP: Fix a error introduced in 36b676eea6 and fully decouple disabling of pre-emption from critical sections."
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This reverts commit 9aedf1bdec
2016-12-26 07:48:22 -06:00
9aedf1bdec
SMP: Fix a error introduced in 36b676eea6 and fully decouple disabling of pre-emption from critical sections.
2016-12-25 06:54:43 -06:00
efb86382c3
SMP: Back out deferred IRQ locking. This was accidentally merged into master and it looks like it is going to be more work than I thought to get it working again. Changes will go to the irqlock branch.
2016-12-24 19:53:37 -06:00
f55bad863b
SMP: Fix logic error in last change: Deferred restoration of IRQ lock only applies if the context switch was on this CPU.
2016-12-24 18:52:58 -06:00
d75a7643d0
Fix a trivial typo
2016-12-23 13:01:20 -06:00
Gregory Nutt