Do not return from fork() until mcctrl side has created mckernel's
procfs entries for the child PID.
This fixes programs doing fork() immediately followed by opening
/proc/<child pid>/something, and would get some error
Refs: #1189
Change-Id: Ie10ea56b65c55f59e96a1ab6ef83a1070e36048d
This includes the following fix:
send_syscall, do_syscall: remove argument pid
Fujitsu: POSTK_TEMP_FIX_26
Refs: #1165
Change-Id: I702362c07a28f507a5e43dd751949aefa24bc8c0
It is accompanied by the following fixes:
(1) Fix put ppd locations in mcexec_wait_syscall()
(2) Move put ptd to end of mcexec_terminate_thread_unsafe() and mcexec_ret_syscall()
(3) Add debug messages for ptd add/get/put
(4) Fix ptd-add/get/put matching in mcexec_wait_syscall()
* Skip put when woken-up from wait_event_interruptible() by signal
Change-Id: Ib9be3f5e62a7a370197cb36c9fa7c4d79f44c314
(1) Masquerade clv
(2) Fix timeout
(3) Let mcexec thread with the same tid as McKernel thread migrating
to Linux handles the migration request
(4) Call create_tracer() before creating proxy related objects
Change-Id: I6b2689b70db49827f10aa7d5a4c581aa81319b55
the pagers are all destroyed when linux thinks there is no process left,
but there is no synchronisation with mcexec on that and some new process
might have spawned and started using these pagers in the meantime,
leading to weird crashes because an invalid pager was used.
The reason we're cleaning up pagers when no process is left is that
mcctrl does not handle pager_req_release is the linux-side process got
killed or died before the mckernel one for some reason, so:
- move pager_req_release to a new __do_in_kernel_irq_syscall() helper
- have free_all_process_memory_range not set MF_HOST_RELEASED on the
memobj
- just in case, clean up everything like before on mcctrl shutdown
instead of when no process is left.
Change-Id: I53b8b9b81b1e5b807593850af17b5ea5e8471174
Refs: #1154
Instead of parsing System.map, use kallsyms_lookup_name() to
get unexported symbols addresses at module loading time.
This lets mckernel work with kaslr enabled (it gets enabled by
default from el7.5 onwards)
Change-Id: Ie4349fc1145ebce44f37f1f40c16f9d75584074d
Many ikc messages expecting a reply use wait_event_interruptible
incorrectly, freeing memory that could still be used on the other side.
This commit implements a generic ikc send and wait helper that helps
with memory management and ownership properly:
- if the message succeeds and a reply comes back normally, the memory
is freed by the caller as usual
- if the wait fails (signal before the reply comes or timeout) then the
memory is set as owner by ikc and will be free when the reply comes back
later
- if the reply never comes, the memory is freed at shutdown when
destroying ikc channels
Refs: #1076
Change-Id: I7f348d9029a6ad56ba9a50c836105ec39fa14943
1. Fix OOM: Count memory usage only when allocation succeeded
2. Fix OOM: Make user allocation fail when memory is running out
3. Fix OOM: Move rusage_init() before numa_init()
4. Cleanup: Rename ihkconfig/ihkosctl functions
5. Cleanup: Pass event type to eventfd()
6. Cleanup: arch/.../rusage.h --> arch/.../arch_rusage.h
1. User asks mcctrl for the result via ihk_os_getrusage() with passing void *
2. mcctrl compiles the results and passes them to the user
3. User interprets it by using the type defined in the LWK-specific header
