e24f281401
This commit adds a new internal interfaces and fixes a problem with three APIs in the SMP configuration. The new internal interface is sched_cpu_pause(tcb). This function will pause a CPU if the task associated with 'tcb' is running on that CPU. This allows a different CPU to modify that OS data stuctures associated with the CPU. When the other CPU is resumed, those modifications can safely take place.
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The three fixes are to handle cases in the SMP configuration where one CPU does need to make modifications to TCB and data structures on a task that could be running running on another CPU. Those three cases are task_delete(), task_restart(), and execution of signal handles. In all three cases the solutions is basically the same: (1) Call sched_cpu_pause(tcb) to pause the CPU on which the task is running, (2) perform the necessary operations, then (3) call up_cpu_resume() to restart the paused CPU.
2016-11-20 07:57:18 -06:00
f40fbaa4b9
sched/task: task_restart() test not supported on SMP systems. This is not fully implemented.
2016-11-19 11:41:05 -06:00
322f9f401c
Simplify how C source files are selected in the build
2014-10-07 07:42:36 -06:00
1ef758d67f
A couple more changes for clean ELF build
2014-09-16 15:40:48 -06:00
925fc9ad81
First round of changes to get the ELF configuration building again
2014-09-16 15:37:05 -06:00
da7a440b35
execv() is a basic system interface. It should not be in libc/ but rather in sched/task. Its symboltable helper logic also belongs in the kernel but belings in binfmt/ with the other symbol table logic
2014-09-15 10:15:19 -06:00
e12213592b
Don't build task_create() or task_spawn() interfaces if there is an addres environment
2014-09-14 08:22:21 -06:00
0be5f2ca81
Move exit.c to task/exit.c
2014-08-08 18:38:04 -06:00
224ee05957
Move a few files in sched/ that did not seem to have a home to sched/signal and sched/task
2014-08-08 16:57:47 -06:00
23a334c066
Move task control files from sched/ to sched/task
2014-08-08 16:44:08 -06:00
Gregory Nutt