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c85a9b99e1501abed99238d0bbb1a3c87e407f0d
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528 Commits

Author SHA1 Message Date
Balazs Gerofi
c85a9b99e1 a couple of cosmetic changes of debug messages 2015-08-22 18:53:14 +09:00
Tomoki Shirasawa
5a0cd3f53f ptrace_detach when exiting 
refs #590
 2015-08-18 18:03:09 +09:00
Balazs Gerofi
9fa62adfe7 execve(): stay compliant with locked context switching 2015-08-10 14:18:11 +09:00
Balazs Gerofi
f0ab8ec89a sched_request_migrate(): change CPU flags atomically 2015-08-10 12:45:59 +09:00
Balazs Gerofi
f4cc82578d check_need_resched(): no thread migration in IRQ context 2015-08-10 12:43:35 +09:00
Balazs Gerofi
9ba40dc0ff schedule(): hold runq lock for the entire duration of context switching 
releasing the runq lock after loading page tables but before the actual
context switch can leave execution in an inconsistent if the current
process is descheduled from an IRQ between these two steps.
this patch holds the runq lock with IRQs disabled and makes the context
switch a single atomic operation.
 2015-08-10 12:37:12 +09:00
Balazs Gerofi
8d6c97ea5c schedule(): disable auto thread migration 2015-08-07 16:07:31 +09:00
Balazs Gerofi
215cd370a1 ap_init(): clean up AP boot kernel messages 2015-08-07 10:57:59 +09:00
Balazs Gerofi
0a0e2c04a0 support for dynamically toggling time sharing when CPU is oversubscribed 2015-08-07 08:51:50 +09:00
Balazs Gerofi
aa191b87d3 schedule(): use XSAVE/XRSTOR and swap floating point registers in context switch 2015-08-07 08:41:00 +09:00
Balazs Gerofi
d5c243571f cpu_clear_and_set(): atomic CPU mask update in migration code 2015-08-06 10:49:55 +09:00
Balazs Gerofi
328e69a335 schedule(): do not preempt while holding spinlocks or while in offloaded syscall 2015-08-06 10:36:13 +09:00
Balazs Gerofi
b77755d0f7 obtain_clone_cpuid(): always start from CPU 0 and fill in cores linearily 2015-07-28 20:20:47 +09:00
Balazs Gerofi
d7bae14707 TEMPORARY: schedule(): move threads when core is explicitly oversubscribed 2015-07-28 20:12:58 +09:00
Balazs Gerofi
4e58d08f5c schedule_timeout(): give a chance to other process in spin sleep if CPU core is oversubscribed 2015-07-28 20:06:56 +09:00
Balazs Gerofi
9b1e691588 fix thread migration code (i.e., sched_setaffinity()) 
- moved migration code into idle() process and updated schedule() to detect
  when a thread has moved to another CPU in order to avoid doing housekeeping
  on behalf of the original one
- start CPU head from core 0
- keeps track of nested interrupts
 2015-07-24 20:09:17 +09:00
Balazs Gerofi
3988b0fc61 keep track of IRQ context and don't do thread migration there 2015-07-23 16:56:58 +09:00
Balazs Gerofi
54eb345847 settid(): prevent modifying tid after thread migration 2015-07-23 16:51:24 +09:00
Tomoki Shirasawa
bbe7aef95b fix calling do_signal (argument lacked) 2015-07-17 10:18:43 +09:00
Tomoki Shirasawa
1ff4cf68c2 support SA_RESTART flag and restart syscall 2015-07-16 16:33:14 +09:00
Tomoki Shirasawa
1bc84d3feb modify to copy credentials 2015-07-13 15:29:26 +09:00
Balazs Gerofi
f7d78c8b7d sched_getaffinity(): return EINVAL for 0 lenght request (fixes LTP sched_getaffinity01) 2015-07-10 11:00:43 +09:00
Balazs Gerofi
7647c99cc2 do_migrate(): disable IRQ while holding migq_lock to avoid deadlocking with reschedule interrupts 2015-07-09 15:23:28 +09:00
Balazs Gerofi
43a774fbfc sched_setaffinity(): undo target core change, avoid abort on length mismatch 2015-07-09 11:00:26 +09:00
Balazs Gerofi
bd913c503b sched_setaffinity(): find an actual target core 2015-07-03 11:59:52 +09:00
Tomoki Shirasawa
59ee251e1c fix /proc/pid/mem, /proc/pid/status, /proc/pid/cmdline 2015-07-02 00:22:35 +09:00
Balazs Gerofi
4ebe778ede vm->exiting: deal with exit_group() and concurrent page faults 2015-06-25 16:04:04 +09:00
Tomoki Shirasawa
2af2b1205f temporary fix for setfsuid/setfsgid 2015-05-19 06:27:59 +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
f4162dff52 some signals set siginfo.si_code 2015-04-14 15:11:36 +09:00
NAKAMURA Gou
a0d909af75 add supports for dump analyzer 2015-03-31 12:59:53 +09:00
Tomoki Shirasawa
63669b7f71 support /proc/pid/status for LTP mmap14 2015-03-28 14:20:07 +09:00
NAKAMURA Gou
4946964ed0 update copyright notices 2015-03-27 14:50:09 +09:00
Balazs Gerofi
5f19842a6a support for process_vm_readv()/process_vm_writev() 2015-03-25 19:44:56 +09:00
Susumu Komae
c2a1f933e8 Set tid (instead of pid) for ptrace event message of 
PTRACE_EVENT_{FORK,VFORK,CLONE,VFORKDONE}.
Specify 2nd argument as pid (instead of -1) of function findthread_and_lock(),
to find tracee process in ptrace subroutines.
(gdb testsuite gdb.base/watch_thread_num.exp)
 2015-03-20 13:22:00 +09:00
NAKAMURA Gou
055769254d implement mlockall()/munlockall() for LTP syscall 2015-03-19 16:46:31 +09:00
NAKAMURA Gou
786ae83380 add arch-dependent mman.h 2015-03-19 16:36:57 +09:00
NAKAMURA Gou
8c662c83be implement mincore(2) for LTP 2015-03-19 16:32:03 +09:00
NAKAMURA Gou
4698bc40c2 implement System V shared memory for LTP syscalls 2015-03-19 16:21:18 +09:00
Tomoki Shirasawa
f5d935b703 support signalfd4 step1 2015-03-18 17:35:43 +09:00
Tomoki Shirasawa
8934eb91a4 kill syscall check uid 2015-03-17 15:04:36 +09:00
NAKAMURA Gou
fa923da0e3 add host PTE cleaning to execve(). refs #377 
This removes a cause of LTP gethostid01's wrong behavior.
 2015-03-10 18:23:50 +09:00
Susumu Komae
b553de7435 supports PTRACE_GETREGSET, PTRACE_SETREGSET. 
supports PTRACE_GETFPREGS, PTRACE_SETFPREGS.

refs #421
 2015-03-06 19:18:32 +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
Balazs Gerofi
8b24f60861 Combine range and memobj flags before arch_vrflag_to_ptattr() 2015-03-05 16:40:14 +09:00
Balazs Gerofi
f82bb284bb Make pager and devobj debug messages optional 2015-03-05 16:03:21 +09:00
Balazs Gerofi
bf12a5c45e Introduction of write-combined memory type mappings. 
Introduction of VR_WRITE_COMBINED, PTATTR_WRITE_COMBINED and modification
to the memobj's get_page() interface so that Linux communicates back mapping
flags (such as write-combined).
 2015-03-05 16:03:21 +09:00
Tomoki Shirasawa
e6011be1af create area for to save fp regs 
refs #421
 2015-03-05 12:18:46 +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