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a032dc3d1bc5677e524e72877242f10a2eabb83e
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54 Commits

Author SHA1 Message Date
Dominique Martinet
a032dc3d1b procfs: use length from snprintf instead of recomputing 
Change-Id: I75ba4cf5c2e94798d183728c11bb34032cdddf5a
 2018-10-11 09:17:58 +00:00
Dominique Martinet
b70d470e20 procfs: add '/proc/pid/stat' to mckernel side and fix its comm 
This lets ps show the proper executable name instead of mcexec's comm
on linux side

Change-Id: I62732037451f129fc2e905357ebdc351bf7f6d2d
Refs: #1114
 2018-10-04 01:01:19 +00:00
Dominique Martinet
ecc850dfef procfs/do_fork: wait until procfs entries are registered 
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
 2018-10-04 01:00:52 +00:00
Ken Sato
9a20cfaefb mem: Check if phys-mem is within the range of McKernel memory 
Fujitsu: POSTK_DEBUG_TEMP_FIX_52
Refs: #1164
Change-Id: Idb9a6eac1d2e1df4c663c3171925c774421177fd
 2018-08-30 02:18:37 +00:00
Tomoki Shirasawa
895a8c4099 procfs: Support multiple reads of e.g. /proc/*/maps 
Refs: #1021
Change-Id: If36e1a0f3f41f0215868daf578e96775d96a59a3
 2018-08-30 01:48:06 +00:00
Tomoki Shirasawa
14660a10c3 Fix to procfs read returns EIO 
Refs: #1152
Change-Id: I48b330953fd7674ba1a3ac35744f9f50a5712730
 2018-08-02 01:48:51 +00:00
Aurelien Cedeyn
68c702d024 process_procfs_request: Add Pid to /proc/<PID>/status 
The standard UNIX tool to get processes information, need to have the
process id inside /proc/<PID>/status.

Using ps without PID in /proc/<PID>/status gives :

  PID TTY          TIME CMD
 2551 pts/0    00:00:00 bash
    0 pts/0    00:00:00 exe
    0 pts/0    00:00:00 exe

With this patch:
  PID TTY          TIME CMD
 2551 pts/0    00:00:00 bash
11966 pts/0    00:00:00 exe
12619 pts/0    00:00:00 exe

Change-Id: Ic9d255cbef4d49e49bdaedcfc8e3545d9c144325
 2018-07-26 05:00:21 +00:00
Tomoki Shirasawa
67ebcca74d Fix to VMAP virtual address leak 
Fujitsu: POSTK_DEBUG_TEMP_FIX_51
Refs: #1024
Change-Id: I1692ee4f004cb4d1f725baf47a8ed31fce1bf42a
 2018-07-26 02:17:55 +00:00
Ken Sato
08f2840f7d procfs: Show file names in /proc/<PID>/maps 
Refs: #1065
Change-Id: I2f1603b02d12e60972c8f2e5f059d0025f4ceaea
 2018-07-03 08:56:44 +00:00
Ken Sato
511555c8cb fix: /proc/<PID>/maps outputs a unnecessary NULL character 2018-05-30 16:38:28 +09:00
Balazs Gerofi
54169bc3ea procfs: indicate heap in /proc/maps 2018-01-26 16:22:43 +09:00
Balazs Gerofi
142e923222 procfs: indicate VDSO, vsyscall and stack in /proc/maps 2018-01-26 16:02:32 +09:00
Tomoki Shirasawa
0cda763f95 fix /proc/*/pagemap 
refs #387
 2017-12-25 16:08:51 +09:00
Dominique Martinet
4d4279121b process/vm; replace vm_range list by a rbtree 
This replaces the chained list used to keep track of all memory ranges
of a process by a standard rbtree (no need of interval tree here
because there is no overlap)

Accesses that were done directly through vm_range_list before were
replaced by lookup_process_memory_range, even full list scan (e.g.
coredump).
The full scans will thus be less efficient because calls to rb_next()
will not be inlined, but these are rarer calls that can probably afford
this compared to code simplicity.

The only reference to the actual backing structure left outside of
process.c is a call to rb_erase in xpmem_free_process_memory_range.

v2: fix lookup_process_memory_range with small start address

v3: make vm_range_insert error out properly

Panic does not lead to easy debug, all error paths
are handled to just return someting on error

v4: fix lookup_process_memory_range (again)

That optimistically going left was a more serious bug than just
last iteration, we could just pass by a match and continue down
the tree if the match was not a leaf.

v5: some users actually needed leftmost match, so restore behavior
without the breakage (hopefully)
 2017-10-13 10:00:27 +09:00
Ken Sato
43db8e2d65 remove osnum from mckernel kargs. refs #338 2017-09-12 14:53:44 +09:00
Tomoki Shirasawa
4eed36f124 procfs: support /proc/pid/status State field 
refs #445
 2017-09-12 13:37:27 +09:00
Takayuki Okamoto
9989f41fd3 add arm64 support 
- add arm64 dependent codes with GICv3 and SVE support
- fix bugs based on architecture separation requests
 2017-09-05 15:06:27 +09:00
Ken Sato
8daffa939e IKC: distribute IKC-interrupt to Linux cpus. 2017-05-19 10:26:29 +09:00
Katsukura
3fe2257929 create rusage branch. 2017-03-15 23:22:51 +09:00
Balazs Gerofi
40978d162e procfs_read/write(): rewrite synchronization for scalability and correctness 2016-12-28 14:17:17 +09:00
Balazs Gerofi
536ce9f927 process_procfs_request(): use IRQ save MCS locks while iterating thread list to avoid deadlock 2016-12-28 12:29:10 +09:00
Ken Sato
1130cafe41 ptrace: fixed for threads. 2016-11-28 11:19:30 +09:00
Balazs Gerofi
f634a750c5 sched_{set/get}affinity(): fix error codes (also fixes KMP_AFFINITY behavior) 2016-11-24 21:25:16 +09:00
Balazs Gerofi
994b9a19ac NUMA: expose CPU and memory info in /proc/self/status 2016-10-14 21:34:32 +09:00
Balazs Gerofi
57690479bd read/patch_process_vm(): map non-LWK physical addresses properly 2016-07-22 20:48:54 +09:00
NAKAMURA Gou
e74eb1dd51 add some prototypes to <memory.h> 2016-03-23 19:04:32 +09:00
Tomoki Shirasawa
e2b28da32f signal handler support gdb stepi command 2016-02-21 14:55:34 +09:00
Tomoki Shirasawa
8c40f94aa8 /proc/<PID>/mem: support read/write 2016-02-16 13:21:29 +09:00
Tomoki Shirasawa
c328d26b8d procfs(/proc/<PID>/task/<TID>/stat): fix memory corruption 
refs #722
 2016-02-15 15:10:00 +09:00
Tomoki Shirasawa
a866192db7 refactoring /proc 2016-02-10 08:11:02 +09:00
Yoichi Umezawa
e601248bdc procfs: fix mcos%d/PID/auxv size 2016-02-08 09:38:27 +09:00
Balazs Gerofi
fa7a5ccd11 support /proc/self/exe (needed for GDB to attach to an existing process) 2016-01-19 18:23:02 +09:00
Tomoki Shirasawa
04e193de13 refactoring process structures 2015-10-13 23:04:08 +09:00
Tomoki Shirasawa
59ee251e1c fix /proc/pid/mem, /proc/pid/status, /proc/pid/cmdline 2015-07-02 00:22:35 +09:00
Tomoki Shirasawa
7d5a68be1b add PID and GID to /proc/pid/status 
add /proc/pid/cmdline

refs #445
refs #447
 2015-05-18 17:45:37 +09:00
Tomoki Shirasawa
63669b7f71 support /proc/pid/status for LTP mmap14 2015-03-28 14:20:07 +09:00
NAKAMURA Gou
6a82412d64 modify procfs to read inactive thread's files 
However, the following files can be read only if the corresponding
thread is in active.
- /proc/<PID>/mem
- /proc/<PID>/task/<TID>/mem

refs #371
 2015-03-05 21:41:24 +09:00
NAKAMURA Gou
f84b5acf79 map entire buffer to read procfs 
Reading data from procfs file more than 4096 byte caused a buffer
overrun in McKernel because the buffer was always mapped in McKernel
4096 byte regardless of actual buffer size.
 2015-03-05 20:30:33 +09:00
NAKAMURA Gou
daec7de828 implement /proc/stat 
only for sysconf(_SC_NPROCESSORS_ONLN).  This enables Intel OpenMP
runtime to arrange threads with regard for CPU topology.

refs #291
 2015-03-04 15:46:53 +09:00
bgerofi@riken.jp
d4ba4dc8b3 introduction of mckernel_procfs_file_operations; fix /proc/self path resolution; 
implementation of /proc/self/pagemap (LTP mmap12)
 2014-12-15 12:46:05 +09:00
Balazs Gerofi bgerofi@riken.jp
3c24315f91 support for /proc/mcos%d/PID/maps (without file info) (LTP mlock03) 2014-12-05 16:29:20 +09:00
Tomoki Shirasawa
3fe7e39607 some variables definition are gathered to fork_tree_node from process. 
- remove both-defined: pid, pgid, status
- move to fork_tree_node: tid
- make dummy fork_tree_node for idle_process.
 2014-10-29 16:54:09 +09:00
NAKAMURA Gou
6415559a81 procfs: use current cpu's syscall_channel 2014-10-10 16:20:38 +09:00
Masamichi Takagi
a7b0880a8d Make findthread_and_lock take ihk_spinlock_t ** 2014-09-23 12:03:48 +09:00
Naoki Hamada
43e54dcf85 procfs: fix for http://postpeta.pccluster.org/redmine/issues/119#note-30 2014-09-22 10:46:33 +09:00
Naoki Hamada
d7436652bf procfs: add support for <pid>/mem files and ad hoc fix for memory incoherency. 2014-09-17 15:49:47 +09:00
Tomoki Shirasawa
878ba35804 /proc/mcos?/<pid>/task/<tid>/stat support 2014-09-15 19:21:27 +09:00
Naoki Hamada
95781d59e3 Fix for eof. 2014-09-05 17:15:54 +09:00
Naoki Hamada
a06e5eb47e Bug fixes. 2014-09-05 16:20:15 +09:00
Naoki Hamada
0f95a84293 Migrated. 2014-09-04 14:58:04 +09:00