This includes the following fix:
send_syscall, do_syscall: remove argument pid
Fujitsu: POSTK_TEMP_FIX_26
Refs: #1165
Change-Id: I702362c07a28f507a5e43dd751949aefa24bc8c0
We had a deadlock between:
- free_process_memory_range (take lock) -> ihk_mc_pt_free_range ->
... -> remote_flush_tlb_array_cpumask -> "/* Wait for all cores */"
and
- obj_list_lookup() under fileobj_list_lock that disabled irqs
and thus never ack'd the remote flush
The rework is quite big but removes the need for the big lock,
although devobj and shmobj needed a new smaller lock to be
introduced - the new locks are used much more locally and
should not cause problems.
On the bright side, refcounting being moved to memobj level means
we could remove refcounting implemented separately in all object
types and simplifies code a bit.
Change-Id: I6bc8438a98b1d8edddc91c4ac33c11b88e097ebb
This optimization make the offloading thread quickly yield to
another thread. Without this, it yileded only after the interval timer
set the rescheduling flag.
Change-Id: Ida3b17ed94782d5d1af0185a96b1f50d9db8d244
Defining C structures for the following objects:
(1) Remote and local context
(2) Stack of system call arguments / return values
Change-Id: Iafbb6c795bd765e3c78c54a255d8a1e4d4536288
(1) Add --enable-uti option. The binary-patch library is
preloaded with this option.
(2) Binary-patching is done by syscall_intercept developed by Intel
This commit includes the following fixes:
(1) Fix do_exit() and terminate() handling
(2) Fix timing of killing mcexec threads when McKernel thread calls terminate()
Change-Id: Iad885e1e5540ed79f0808debd372463e3b8fecea
Set PROT_EXEC to host VMA because uti needs PROT_EXEC for text VMAs.
Meanings of prot bits of Host VMA has been changed as follows.
RWX: No mapping or RW mapping
RX: Read only mapping
This is because this is a normal case since terminate() is changed so
that it first kills all mcexec threads and then kill McKernel threads.
Change-Id: I88380bf28b60645d361baded525d71105235c16f
(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 size of tid table needs to be more than #CPUs when CPU oversubscription
is needed.
Note that the max number of simultaneous threads are the min of the
following two:
(1) Number of mcexec worker threads
(2) NR_TID defined in kernel/syscall.c
Change-Id: I425189da415e1d3a763ad62567950d001850cf0d
The function was between two perf functions when perf functions don't
use it...
It seemed simpler to move the function than to add an extra ifdef
Use that occasion to fix style warnings, no actual code changes were
made.
Change-Id: Ie8b5fa7968a3d5e54a690d079874db54f5e6c8c9
Heavily inspired off linux kernel's dynamic debug:
* add a /sys/kernel/debug/dynamic_debug/control file
(accessible from linux side in /sys/class/mcos/mcos0/sys/kernel/debug/dynamic_debug/control)
* read from file to list debug statements (currently limited to 4k in size)
* write to file with '[file foo ][func bar ][line [x][-[y]]] [+-]p' to change values
Side effects:
* reindented all linker scripts, there is a new __verbose section
* added string function strpbrk
Change-Id: I36d7707274dcc3ecaf200075a31a2f0f76021059
search_free_space changed since this was implemented and the code is
no longer compatible
Looking at it again, the function is not used anywhere other than syscall.c
and the second function does not seem to fix anything specific so this
just removes the untested side.
Change-Id: If28d35ec4da083a40dc6936fcb21f05fb64e378a
Fujitsu: POSTK_DEBUG_ARCH_DEP_27
Behave in the same way as Linux which returns old_address when
old_size == new_size && !MREMAP_FIXED.
Refs: #1112
Change-Id: Ice1421a8a77f962d087de8475aa2cd40c59be5f7
(1) Check if rlim's address is valid
(2) Check if soft-limit does not exceed hard-limit
Fujitsu: POSTK_DEBUG_TEMP_FIX_3
Refs: #1050
Change-Id: I5bf1008ce172f9dff64ec89b1f97614926abaf13
(1) Check if size is large enough
(2) Check if size is positive
Fujitsu: POSTK_DEBUG_TEMP_FIX_5
Refs: #1121
Change-Id: I3e41720c89ef89294820f7f4fa8df1a69a7011b0
This fixes crashes _without_ oversubscribing with a process doing
fork() execve() / wait() in a loop
Issue: #1132
Change-Id: I98531f4643ad6b6a8f750a1a3f05b9ff3ebfd50f
