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40b8587a8a22aea4b4a0d7f87493400190e4b858
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166 Commits

Author SHA1 Message Date
Balazs Gerofi
40b8587a8a schedule(): sync CPU_FLAG_NEED_RESCHED flag with clone and migrate 2015-09-16 19:22:40 +09:00
Balazs Gerofi
c85a9b99e1 a couple of cosmetic changes of debug messages 2015-08-22 18:53:14 +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
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
Tomoki Shirasawa
1bc84d3feb modify to copy credentials 2015-07-13 15:29:26 +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
4ebe778ede vm->exiting: deal with exit_group() and concurrent page faults 2015-06-25 16:04:04 +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
NAKAMURA Gou
4698bc40c2 implement System V shared memory for LTP syscalls 2015-03-19 16:21:18 +09:00
Tomoki Shirasawa
8934eb91a4 kill syscall check uid 2015-03-17 15:04:36 +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
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
2eac58aab3 add patch_process_vm(). (in progress) 
This function patches specified range of specified user space even if
the range is not writable.

refs #401
 2015-03-04 12:00:51 +09:00
NAKAMURA Gou
2239a6b09b modify page_fault_process() 
- change its argument from 'struct process *'
                        to 'struct process_vm *'.
- change its name from 'page_fault_process()'
                    to 'page_fault_process_vm()'.
- allow to resolve a fault on the process_vm of another process.
 2015-03-04 11:29:15 +09:00
Tomoki Shirasawa
8caeba7cba support PTRACE_GETSIGINFO and PTRACE_SETSIGINFO 
refs #422
 2015-03-03 09:54:57 +09:00
Balazs Gerofi
0307f6a6cc impementation of sched_{setparam, getparam, setscheduler, getscheduler, get_priority_min, get_priority_max, rr_get_interval} system calls 2015-02-19 11:46:03 -08:00
Tomoki Shirasawa
c0edb6fe6f add new cpu state CPU_STATUS_RESERVED 2015-02-18 13:46:08 +09:00
NAKAMURA Gou
16af976a71 support msync() system call. refs #382 
Msync(2) of this version writes only the pages which the calling process
modified. Modifications of the other processes are not written.
 2015-02-18 11:52:15 +09:00
Tomoki Shirasawa
9574a28a5f The same CPU is assigned to a different process. 
refs #423
 2015-02-17 18:27:46 +09:00
Susumu Komae
fa15f6b106 support PTRACE_SYSCALL. 
support PTRACE_O_TRACESYSGOOD.
ptrace_report_exec() calls ptrace_report_signal().

refs #265
 2015-02-17 16:56:27 +09:00
Susumu Komae
5f5ab34559 support PTRACE_ATTACH. 
fix PTRACE_TRACEME, PTRACE_DETACH.
 2015-01-30 21:02:01 +09:00
Susumu Komae
c3ade864d9 fix PTRACE_PEEKUSER, PTRACE_POKEUSER, PTRACE_GETREGS. 
support PTRACE_SETREGS.
  In struct process, add 'unsigned long *ptrace_debugreg', instead of 'struct user *userp'.
  debug registers are read/written from/to ptrace_debugreg, save/restore in schedule().
  most general registers are proc->uctx.
  fs_base is proc->thread.tlsblock_base.
  gs_base,ds,es,fs,gs and orig_rax are uncompleted.
  other members in 'struct user' are ignored, same as Linux implementation.

refs #257
refs #373
refs #263
 2015-01-29 14:08:38 +09:00
Tomoki Shirasawa
08cc31f9bf support setrlimits/getrlimits, however this fix is these syscalls only. 
checking resource process must implement it separately.

refs #330
 2015-01-27 10:35:58 +09:00
Susumu Komae
765de119dc support PTRACE_O_TRACEFORK, PTRACE_O_TRACEVFORK, PTRACE_O_TRACEVFORKDONE. 
to start with a SIGSTOP, do not set proc->ftn->status to PS_RUNNING in __runq_add_proc().
  change vfork() set CLONE_VFORK.

refs #266
refs #267
refs #372

support PTRACE_GETEVENTMSG.
  to store ptrace event, add 'unsigned long ptrace_eventmsg;' member in struct fork_tree_node.

refs #273
 2015-01-14 10:43:18 +09:00
NAKAMURA Gou
0942bf0ce0 make dkprintf() evaluate its parameters always 
Parameters of dkprintf() should be evaluated even if dkprintf() is
disabled.  Because this enables to find expression of parameter obsolete
and to avoid unnecessary compiler warnings such as "unused variable".
 2014-12-22 16:58:03 +09:00
NAKAMURA Gou
9c94e90007 use ftn->tid instead of proc->tid 2014-12-22 16:58:02 +09:00
bgerofi@riken.jp
8909597499 clone(): support for handling CLONE_SIGHAND and CLONE_VM flags separately 2014-12-04 16:55:17 +09:00
Tomoki Shirasawa
8f30e16976 when mcexec is killed by SIGKILL, terminate mckernel process (BUG#259) 2014-11-27 16:13:52 +09:00
Balazs Gerofi
89acf5c5d6 support for AT_RANDOM auxiliary entry on the process stack (needed for _dl_random in glibc) 2014-11-11 08:48:27 +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
11947a4ce3 initialize and propagate a cpu affinity (temporary fix) 
This fix is only intended to work an OpenMP program.
It is necessary to investigate behavior of linux and reimplement this
fix.
 2014-10-20 15:21:49 +09:00
NAKAMURA Gou
f195b9c675 don't use COW pages in private anonymous mapping (quick fix) 2014-10-17 23:25:15 +09:00
NAKAMURA Gou
d2cb890cdd idle(): recheck runq just before cpu status check 
There is a problem which causes wait4(2) hang when wait4(2) called by a
process races with its child process termination.
This is a quick fix for this problem. See idle().

refs #271
 2014-10-15 17:58:27 +09:00
NAKAMURA Gou
758796bb69 idle(): cosmetic changes 2014-10-15 17:58:27 +09:00
Masamichi Takagi
95dd193fd6 Fix reporting of having done execve to ptracer 2014-10-15 14:49:23 +09:00
Naoki Hamada
2997274470 Make __WCLONE option for wait4(2) and flags for clone(2) work properly. 2014-10-15 14:45:58 +09:00
Masamichi Takagi
013d3e95c2 Fix manipulation of fork_tree_node for ptrace 2014-10-15 14:42:17 +09:00
Masamichi Takagi
658b88fd7b Modify spacing 2014-10-15 14:40:47 +09:00