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Author SHA1 Message Date
NAKAMURA Gou
b1b706453f vsyscall: send SIGSEGV to the caller if syscall fails 
On CentOS 7 (RHEL 7?), "errno" isn't set when vsyscall_gettimeofday
fails. So, in such case, vsyscall_gettimeofday send SIGSEGV to the
caller to report failure of gettimeofday operation.
 2015-09-16 21:37:11 +09:00
NAKAMURA Gou
bd5708286d make sys_gettimeofday() use copy_to_user() 2015-09-16 21:26:32 +09:00
NAKAMURA Gou
c8a13cf213 make gettimeofday ignore NULL parameter 2015-09-16 21:26:24 +09:00
NAKAMURA Gou
5ad0a03d18 make gettimeofday handle second parameter (timezone) 2015-09-16 21:25:29 +09:00
NAKAMURA Gou
3819eec03f cosmetic changes 
- sys_gettimeofday()
 2015-09-16 21:13:12 +09:00
Balazs Gerofi
40b8587a8a schedule(): sync CPU_FLAG_NEED_RESCHED flag with clone and migrate 2015-09-16 19:22:40 +09:00
Balazs Gerofi
e7b1115572 mcreboot-smp-x86.sh: introduction of ihk_ikc_irq_core argument 2015-09-14 17:30:25 +09:00
Balazs Gerofi
e1a01803d0 disable demand paging on ANONYMOUS mappings unless anon_on_demand kernel argument is passed 2015-09-14 17:26:37 +09:00
Balazs Gerofi
69f4b0e1ad gettimeofday()/nanosleep(): check arguments, return on pending signal 2015-09-14 17:05:30 +09:00
Tomoki Shirasawa
0909a5bed5 tracee context is broken when tracee call execve 2015-09-03 10:05:25 +09:00
Tomoki Shirasawa
9dd224385e When SIGSEGV occurred on a tracee process, a tracee process freezes. 2015-09-01 17:37:56 +09:00
Tomoki Shirasawa
4176c59fd3 using d_path for solution to file path. 2015-08-28 13:01:34 +09:00
Tomoki Shirasawa
afeee5432f When envp is NULL, execve is delayed. 2015-08-28 13:00:45 +09:00
Balazs Gerofi
9ae5bcf46e gettimeofday(): an implementation based on CPU invariant TSC support 2015-08-24 23:53:56 +02:00
Balazs Gerofi
b8f166e608 mcreboot-smp-x86.sh: handle resource allocation after unloading; mcstop+release-smp-x86.sh 2015-08-22 18:55:53 +09:00
Balazs Gerofi
c85a9b99e1 a couple of cosmetic changes of debug messages 2015-08-22 18:53:14 +09:00
Balazs Gerofi
7c816a6b73 an implementation of the Mellor-Crummey Scott (MCS) lock 2015-08-20 15:26:52 +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
386f59000a mcreboot-smp-x86.sh.in: grant real user rw permission on /dev/mcos* 2015-08-07 13:33:44 +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
a029bcac37 mcreboot-smp-x86: find unused IRQ line and pass start vector to ihk_smp_x86.ko 0.9.0 2015-07-07 09:07:16 +09:00
Balazs Gerofi
bd913c503b sched_setaffinity(): find an actual target core 2015-07-03 11:59:52 +09:00
Tomoki Shirasawa
e838affde8 fix to compile error on CentOS 7 2015-07-02 17:08:35 +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
fa79db3bcc fix out of tree build 2015-07-01 23:58:50 +09:00
Tomoki Shirasawa
b7c5cba361 fix to compile on CentOS 6 2015-07-01 23:57:40 +09:00
Balazs Gerofi
382614ddae pstate: use MSR_NHM_TURBO_RATIO_LIMIT as maximum single-core turbo ratio 2015-07-01 22:18:38 +09:00
Tomoki Shirasawa
aa959c6b34 temporary fix for CentOS 6.x 2015-06-30 18:19:53 +09:00
Tomoki Shirasawa
aabc3d386d support a function to execute mcexec automatically. 2015-06-30 17:47:01 +09:00