In addition to that, mcctrl_perf_set is modified so that it updates
usrdata->perf_event_num with number of registered events.
Change-Id: I3f343176f55b06d3baab0b0fe34e240f39706cf6
Fujitsu: POSTK_DEBUG_TEMP_FIX_80
Trailing bits were displayed in proc->saved_cmdline, displaying
uninitialized data to the user in /proc/<pid>/cmdline
Change-Id: I74831c8c68dd2f2197b35e9b49aaaae29c4c1dd5
This would incorrectly make "mcexec sh -c './script.sh'" run with
/bin/bash instead of /bin/sh (which is important, because bash behaviour
changes depending on how it is invoked)
Change-Id: I80610cf442c6c3ecacfa23e8ed15652bc8d4e3f7
This reverts commit b70d470e20.
That commit had been landed too fast after a mistake during migration
from old to new gerrit that didn't keep -1 vote ; it needs some fix
Change-Id: Ifc8a23e42449dfe471049270b4706e9b137e096e
the 'num_processors' symbol is also used by linux, so trying to load all
symbols from linux and mckernel at the same time renders either symbol
inaccessible (the first to be seen is kept by default).
This provides an alternate name for the mckernel symbol, thus letting us
access both more easily if required.
Change-Id: I8074d4f9f9ac45717df9a8df16be710ff762e161
these functions are more logical to keep together there as they depend
on each other.
Also add a comment about the __printf attribute, if we have a quiet
period it would be useful to enable and clear the thousands of
warnings...
Change-Id: I47d3891c9cd87da28b2883c29384959f5abd1459
Hugetlbfs file mappings are handled differently than regular files:
- pager_req_create will tell us the file is in a hugetlbfs
- allocate memory upfront, we need to fail if not enough memory
- the memory needs to be given again if another process maps the same
file
This implementation still has some hacks, in particular, the memory
needs to be freed when all mappings are done and the file has been
deleted/closed by all processes.
We cannot know when the file is closed/unlinked easily, so clean up
memory when all processes have exited.
To test, install libhugetlbfs and link a program with the additional
LDFLAGS += -B /usr/share/libhugetlbfs -Wl,--hugetlbfs-align
Then run with HUGETLB_ELFMAP=RW set, you can check this works with
HUGETLB_DEBUG=1 HUGETLB_VERBOSE=2
Change-Id: I327920ff06efd82e91b319b27319f41912169af1
These macros are needed to make sure the compiler does not optimize away
atomic constructs such as "while (!READ_ONCE(foo))" loops that do not
modify foo within the loop
Also move the barrier() define where it belongs while we are here, it is
needed for READ_ONCE/WRITE_ONCE and including ihk/cpu.h here causes
include loops
Change-Id: Ia533a849ed674719ccbc0495be47d22a3c47b8f8
- remove unused MF_END (that only makes sense for enums without holes,
this one is a set of bits masks)
- remove useless goto in pager_req_create()
- init maxprot to 0 from the start, it's not used in the error cases
(except for debug print)
Change-Id: Ic56c0754824b99f8a7e45fa8e99b8fe3e7c7e592
There were mainly two problems with shebangs:
- Suffix arguments handling e.g. '#!/bin/sh -x'
- Recursive handling e.g. script1 fetchs '#!/path/to/script2'
and script2 itself has a shebang
- (did I say two?) running shebang would replace argv[optind] instead
of appending e.g. script with '#!/bin/sh' and running './script -c'
would run '/bin/sh -c' instead of '/bin/sh ./script -c'
There also are two places where this needs parsing:
- starting a fresh program from mcexec
- starting a new program from execve in mcexec
The first was easy to fix as we already had argv around, but the later
required a new way to transfer the 'new argv elements from the script'
to mckernel to append before its argv -- it used to be 'desc->shell_path'
but that was no longer used at some point and just one keyword is not
enough to handle this properly.
This commit does:
- Refactors the lookup_path + load_elf_desc that was only done at most
twice in its own function that loops indefinitely and use that in both
situations described above
- Transmits the argv addition in the transfer to mckernel after the
desc; mckernel allocates 4 pages (hardcoded) for the descs and we will
hopefully have room for the script arguments on top of that... (there is
no guard!!!)
- Change flatten_strings to allow prepending a flattened string instead
of a single string.
Note that the flatten_string change also brought in a difference in the
format, to have the full length embedded within the string, the latest
slot that used to be zeroes now contains the position of the end of the
buffer (where the last+1 string would be if there had been one)
This required a trivial change in mckernel prepare args function that
used this property for no real reason.
Hopefully things work™, this probably warrants adding a couple of new
ostests...
- create a couple of scripts with recursive invocation/arguments and
check their own argv.
- execute "mcexec script args" and "mcexec sh -c 'script args'"
Change-Id: I2cf9cde5c07c9293f730de89c9731bd93dbfa789
Refs: #1115
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
For get_user_pages_remote in binfmt_mcexec.c:
In 4.10 with 5b56d49fc31d ("mm: add locked parameter to
get_user_pages_remote()")
In 4.9 with 9beae1ea8930 ("mm: replace get_user_pages_remote()
write/force parameters with gup_flags")
For vmf in syscall.c, these two patches in 4.10:
82b0f8c39a38 ("mm: join struct fault_env and vm_fault")
1a29d85eb0f1 ("mm: use vmf->address instead of
vmf->virtual_address")
Fujitsu: POSTK_DEBUG_ARCH_DEP_41
Change-Id: I89a02d03169a2162ea186da1804bf48910446d11
user_space/swapout/swapout_copy_to_01.sh:
* Use ~/.mck_test_config
* Fix checking if McKernel version is written in swap-file
user_space/futex/futex_test.sh:
* Use ~/.mck_test_config
user_space/perf_event_open/perf_event_open_test.sh
* Use ~/.mck_test_config
Change-Id: Id93b207ed0e3e9ebf307073db81b40335bc5b140
Add new file with common functions for tests to use.
- loads config file
- checks for mcexec etc
- checks for LTP and OSTEST if required
- handle mcstop / mcreboot if required, and provide function for it
At the same time, make a few changes to mck_test_config:
- move to ~/.mck_test_config
- add boot params to the config, tests the require specific params can
overwite it
- make the config "set-if-variable-is-empty", so someone can overwrite
any param by setting the environment value e.g. LTP=.... ./test.sh
will use the value given
Change-Id: Ib04112043e3eb89615dc7afaa8842a98571fab93
This includes the following fix:
send_syscall, do_syscall: remove argument pid
Fujitsu: POSTK_TEMP_FIX_26
Refs: #1165
Change-Id: I702362c07a28f507a5e43dd751949aefa24bc8c0
