Author: Carlos Bilbao Muñoz (GitHub: https://github.com/Zildj1an, mail bilbao at vt.edu)
You can find a patch for the Linux kernel version 4.9.30 here. I compiled the kernel bindeb-pkg so you can find headers and image Debian-style packaged here.
| # | File created | Purpose |
|---|---|---|
| 1 | /fsac/fsac.c | Helps with the management of the special linked lists, and the copy from user. |
| 2 | /fsac/fsac_list.c | Helps with the management of the special linked lists, and the copy from user. |
| 3 | /fsac/fsac_plugin.c | Dummy FSAC plugin (default) also manages the list of registered plugins. |
| 4 | /fsac/fsac_proc.c | Manages the /proc entries. Check loaded plugins, check/change active plugin, stats on it. |
| 5 | /include/fsac/fsac.h | Header of /fsac/fsac.c. Also includes auxiliary definitions/functions. |
| 6 | /include/fsac/fsac_list.h | Header of /fsac/fsac_list.c. Also includes auxiliary function. |
| 7 | /include/fsac/fsac_macros.h | Some macros of FSAC. |
| 8 | /include/fsac/fsac_proc.h | Header of /fsac/fsac_proc.c. |
| 9 | /kernel/sched/fsac_class.c | FSAC new scheduling class, will mostly always delegate on the plugin. |
| 10 | /include/fsac/fsac_preempt.h | Header of /fsac/fsac_preempt.c |
| 11 | /fsac/fsac_preempt.c | Functions to switch and check the preemption states, for rescheduling. |
| 12 | /include/fsac/fsac_param.h | The extra parameter added to the struct task struct |
| 13 | /include/fsac/fsac_np.h | Postponed to future versions, includes functions to manage non-preemptive sections. |
| 14 | /fsac/Makefile | Kbuild Makefile for compilation |
| # | File modified | Main reason |
|---|---|---|
| 1 | /kernel/sched/sched.h | Helps with the management of the special linked lists, and the copy from user. |
| 2 | /include/uapi/linux/sched.h | Helps with the management of the special linked lists, and the copy from user. |
| 3 | /kernel/sched.c | Dummy FSAC plugin (default) also manages the list of registered plugins. |
| 4 | /fs/select.c | Manages the /proc entries. Check loaded plugins, check/change active plugin, stats on it. |
| 5 | /kernel/locking/mutex.c | Header of /fsac/fsac.c. Also includes auxiliary definitions/functions. |
| 6 | /kernel/locking/rwsem-xadd.c | Same idea as /kernel/locking/mutex.c but with semaphores. |
| 7 | /kernel/time/hrtimer.c | Same idea as /kernel/locking/mutex.c but for the kernel timer. |
| 8 | /mm/page-writeback.c | FSAC RT tasks should get special treatment when it comes to writing back dirty pages at the address-space. |
| 9 | /mm/page_alloc.c | Special amendments at page allocation when the FSAC plugin is intended to be real-time. |
| 10 | /kernel/sched/core.c | Make sure no Linux balancing, integrate FSAC scheduling class. Also, add hooks for the preemption state machine, like sched_state_entered_schedule() at __schedule(), which flags WILL_SCHEDULE. Per-cpu bool fsac_preemption_in_progress updated in __schedule(). Also in fsac_fork I add if (is_fsac(p)){ p->sched_class = &fsac_sched_class;} |
| 11 | /include/linux/sched.h | Add handling of Inter-Processor Interrupt (IPI) for FSAC, with sched_state_ipi() at case IPI_RESCHEDULE. |
| 12 | /arch/arm/kernel/smp.c | The IPI smp_reschedule_interrupt() might produce a transition in the FSAC sched_state machine. |
| 13 | /arch/x86/kernel/smp.c | Same idea as for /arch/x86/kernel/smp.c |
| 14 | /fs/exec.c | Added a hook for fsac_exec at do_execveat_common() |
| 15 | /kernel/fork.c | Added a hook for exit_fsac at __put_task_struct() |
| 16 | /Makefile | Added to top Makefile the fsac directory at core-y |
| 17 | /arch/x86/kernel/machine_kexec_64.c | Compilation patch for R_X86_64_PLT32 error |
| 18 | /arch/x86/kernel/module.c | Compilation patch for R_X86_64_PLT32 error |
| 19 | /arch/x86/tools/relocs.c | Compilation patch for R_X86_64_PLT32 error |