Commit graph

2822 commits

Author SHA1 Message Date
Erik van der Kouwe
09939b454e Fix line which was too long 2009-12-04 17:49:20 +00:00
Erik van der Kouwe
5427ab41c8 Add realpath function 2009-12-04 07:52:22 +00:00
Erik van der Kouwe
150dfbe96d Cleanup getsockopt and add SO_TYPE 2009-12-04 07:26:56 +00:00
Tomas Hruby
ec1fec6c3f A debug print with no meaning removed from VM. 2009-12-03 10:53:56 +00:00
David van Moolenbroek
fe982ca684 FPU: fix field names, compiler warning, long lines 2009-12-02 23:12:46 +00:00
Ben Gras
38fecc5de1 Part of the FPU changes; forgot to add these files in FPU commit. 2009-12-02 16:35:05 +00:00
Ben Gras
207621b6fb rtl8169 driver contributed by Jaswinder Singh Rajput. 2009-12-02 15:59:42 +00:00
Ben Gras
b9825f55e0 previous commit premature and not part of FPU changes. 2009-12-02 15:53:20 +00:00
Erik van der Kouwe
9a10c6c620 Specify types for integer MAX constants 2009-12-02 15:35:09 +00:00
Ben Gras
39484601e7 any blocksize. 2009-12-02 15:33:14 +00:00
Ben Gras
bd42705433 FPU context switching support by Evgeniy Ivanov. 2009-12-02 13:01:48 +00:00
David van Moolenbroek
fce9fd4b4e Add 'getidle' CPU utilization measurement infrastructure 2009-12-02 11:52:26 +00:00
David van Moolenbroek
be2087ecf9 Filter driver by Wu Bingzheng et al 2009-12-02 10:08:58 +00:00
David van Moolenbroek
f197bcb435 Allow servers to run with fewer privileges:
- allow non-root processes to get their own endpoint
- make alloc_contig() call sys_umap() only when requested
2009-12-02 10:06:58 +00:00
David van Moolenbroek
30a7fe5fa9 libdriver changes:
- remove obsolete non-safecopy support
- merge libdriver and libdriver_asyn
- change standard reply model from sendnb to senda
2009-12-02 09:57:48 +00:00
David van Moolenbroek
4924d1a9b5 RS changes:
- add new "control" config directive, to let drivers restart drivers
  (by Jorrit Herder)
- fix bug causing system processes to be started twice sometimes
2009-12-02 09:54:50 +00:00
Ben Gras
7c0cdc61bc fix for race condition - IRQ can happen between clearing the endpoint
of the handling process and before removing the hook. The handler function
will panic then.
2009-12-01 16:46:27 +00:00
David van Moolenbroek
ad259e92af Alternative VirtualBox/Lance driver workaround 2009-11-28 13:28:55 +00:00
David van Moolenbroek
fe7b2f1652 RS fixes:
- fix resource leak (PCI ACLs) when child fails right after exec
- fix resource leak (memory) when child exec fails at all
- fix race condition setting VM call privileges for new child
- make dev_execve() return a proper result, and check this result
- remove RS_EXECFAILED, as it should behave exactly like RS_EXITING
- add more clarifying comments about starting servers
2009-11-28 13:23:45 +00:00
David van Moolenbroek
45123f83d3 PM: remove 'boottime' global variable 2009-11-28 13:22:01 +00:00
David van Moolenbroek
6da61b8f05 fix _NSIG usage 2009-11-28 13:20:50 +00:00
David van Moolenbroek
c6cce1823d Portability: POSIXize some of inet's error codes 2009-11-28 13:18:33 +00:00
David van Moolenbroek
709a739b52 Kernel: unbreak load averages 2009-11-28 13:16:03 +00:00
David van Moolenbroek
6c6e1db676 Kernel: fix faulty trap check 2009-11-28 13:15:07 +00:00
David van Moolenbroek
e06e85b511 Portability: include sys/select.h from sys/time.h 2009-11-22 20:11:06 +00:00
David van Moolenbroek
bdb85248d4 VM: don't send arbitrary status values to kernel 2009-11-22 13:06:18 +00:00
David van Moolenbroek
4d4cb8fa24 Support for read/write on connected UDP sockets 2009-11-19 23:45:46 +00:00
David van Moolenbroek
3926b70b22 Remove dead mini_ds_retrieve_u32 code 2009-11-17 14:10:09 +00:00
Erik van der Kouwe
c85bd7edb9 Patch by Jaswinder Singh Rajput to fix FTP progress display 2009-11-17 08:41:43 +00:00
Tomas Hruby
8a44a44cb9 Local APIC
- local APIC timer used as the source of time

- PIC is still used as the hw interrupt controller as we don't have
  enough info without ACPI or MPS to set up IO APICs

- remapping of APIC when switching paging on, uses the new mechanism
  to tell VM what phys areas to map in kernel's virtual space

- one more step to SMP

based on code by Arun C.
2009-11-16 21:41:44 +00:00
Tomas Hruby
6515c93ecf New instructions in gas2ack
pause
mfence
rdtsc
rdpmc
2009-11-16 21:32:48 +00:00
David van Moolenbroek
2dc9e354f7 ugly double blank line, my fault 2009-11-16 18:22:28 +00:00
Tomas Hruby
9e62bd5241 .align replaced by .balign in mpx386.S 2009-11-13 09:30:45 +00:00
Tomas Hruby
21a5917f3e gas2ack does not understand .align
- as .align is target dependent we for usage of .balign for byte alignment
2009-11-13 09:29:37 +00:00
Tomas Hruby
d653cb457f gas2ack support for rdmsr and wrmsr 2009-11-12 16:19:01 +00:00
Tomas Hruby
cb9faaebfd No need for a special idle queue
- as the idle task is never placed on any run queue, we don't need any special
  idle queue.

- one more queue available for user processes
2009-11-12 08:47:25 +00:00
Tomas Hruby
ad4dcaab71 Idle task never runs
- idle task becomes a pseudo task which is never scheduled. It is never put on
  any run queue and never enters userspace. An entry for this task still remains
  in the process table for time accounting

- Instead of panicing if there is not process to schedule, pick_proc() returns
  NULL which is a signal to put the cpu in an idle state and set everything in
  such a way that after receiving and interrupt it looks like idle task was
  preempted

- idle task is set non-preemptible to avoid handling in the timer interrupt code
  which make userspace scheduling simpler as idle task does not need to be
  handled as a special case.
2009-11-12 08:42:18 +00:00
Tomas Hruby
37a7e1b76b Use of isemptyp() macro instead of testing RTS_SLOT_FREE flag
- some code used to test if only this flag is set, some if also this flag is
  set. This change unifies the test
2009-11-12 08:35:26 +00:00
Tomas Hruby
f98bea8f67 The rest of the r5641 commit 2009-11-11 17:02:45 +00:00
Tomas Hruby
04db2d7184 enable printing of 64-bit ints with gcc. 2009-11-11 12:15:08 +00:00
Tomas Hruby
b3b0a18403 allow kernel to tell VM extra physical addresses it wants mapped in.
used in the future for mapping in local APIC memory.
2009-11-11 12:07:06 +00:00
Tomas Hruby
9ba3b53de8 kernel/proc.h can be included in kernel assembky files
- the gnu .S are compiled with __ASSEMBLY__ macro set which allows us to
  conditionaly remove C stuff from the proc.h file when included in assembly
  files
2009-11-10 09:14:50 +00:00
Tomas Hruby
a972f4bacc All macros defining rts flags are prefixed with RTS_
- macros used with RTS_SET group of macros to define struct proc p_rts_flags are
  now prefixed with RTS_ to make things clear
2009-11-10 09:11:13 +00:00
Tomas Hruby
daf7940c69 pick_proc() called only just before returning to userspace
- new proc_is_runnable() macro to test whether process is runnable. All tests
  whether p_rts_flags == 0 converted to use this macro

- pick_proc() calls removed from enqueue() and dequeue()

- removed the test for recursive calls from pick_proc() as it certainly cannot
  be called recursively now

- PREEMPTED flag to mark processes that were preempted by enqueueuing a higher
  priority process in enqueue()

- enqueue_head() to enqueue PREEMPTED processes again at the head of their
  current priority queue

- NO_QUANTUM flag to block and dequeue processes preempted by timer tick with
  exceeded quantum. They need to be enqueued again in schedcheck()

- next_ptr global variable removed
2009-11-09 17:48:31 +00:00
David van Moolenbroek
86cc12b9a3 pci: extend NR_DRIVERS to cover all system processes 2009-11-09 10:43:46 +00:00
Tomas Hruby
ae75f9d4e5 Removal of the executable flag from files that cannot be executed
- 755 -> 644
2009-11-09 10:26:00 +00:00
David van Moolenbroek
c539fea347 activate new ptrace test, too 2009-11-09 09:26:09 +00:00
David van Moolenbroek
a07f8d7646 Fix ptrace bug when reattaching to a detached process 2009-11-09 08:12:25 +00:00
Tomas Hruby
ebbce7507b Complete ovehaul of mode switching code
- after a trap to kernel, the code automatically switches to kernel
  stack, in the future local to the CPU

- k_reenter variable replaced by a test whether the CS is kernel cs or
  not. The information is passed further if needed. Removes a global
  variable which would need to be cpu local

- no need for global variables describing the exception or trap
  context. This information is kept on stack and a pointer to this
  structure is passed to the C code as a single structure

- removed loadedcr3 variable and its use replaced by reading the %cr3
  register

- no need to redisable interrupts in restart() as they are already
  disabled.

- unified handling of traps that push and don't push errorcode

- removed save() function as the process context is not saved directly
  to process table but saved as required by the trap code. Essentially
  it means that save() code is inlined everywhere not only in the
  exception handling routine

- returning from syscall is more arch independent - it sets the retger
  in C

- top of the x86 stack contains the current CPU id and pointer to the
  currently scheduled process (the one right interrupted) so the mode
  switch code can find where to save the context without need to use
  proc_ptr which will be cpu local in the future and therefore
  difficult to access in assembler and expensive to access in general

- some more clean up of level0 code. No need to read-back the argument
  passed in
  %eax from the proc structure. The mode switch code does not clobber
  %the general registers and hence we can just call what is in %eax

- many assebly macros in sconst.h as they will be reused by the apic
  assembly
2009-11-06 09:08:26 +00:00
Tomas Hruby
f2a1f21a39 Clock task split
- preemption handled in the clock timer interrupt handler, not in the clock task

- more achitecture independent clock timer handling code

- smp ready as each CPU can have its own timer
2009-11-06 09:04:15 +00:00