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* kern/gdb.c (getDebugChar): Fix use of comcngetc, wait is merely a
switch, not a timeout.
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* linux/src/drivers/net/pci-scan.c: Avoid #erroring out.
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A lot of code assumes that printf is re-entrant, e.g. the pagination
code in the debugger, or any use of assert inside the console driver.
* kern/printf.c: Drop the lock serializing calls to `_doprnt'.
(printf_init): Remove function.
* kern/printf.h (printf_init): Remove declaration.
* kern/startup.c (setup_main): Remove call to `printf_init'.
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* kern/lock.c (struct simple_locks_info): Fix type of `ra'.
(simple_lock, simple_lock_try): Use compiler built-in functions to get
return address.
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* kern/bootstrap.c (boot_script_exec_cmd): Add missing unlock.
(user_bootstrap): Likewise.
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* kern/slab.c (host_slab_info): Fix locking.
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This fixes a corruption in the radix trees representing the IPC spaces
when memory was tight.
* ipc/ipc_space.h: Use a general lock to protect IPC spaces.
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* ipc/ipc_entry.c (ipc_entry_alloc): Assume the space is write-locked.
(ipc_entry_alloc_name): Likewise.
* ipc/ipc_object.c: Fix the locking around all call sites to the two
functions where the space was not locked before.
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* i386/intel/pmap.c: Fix typo.
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* ipc/ipc_table.c (ipc_table_alloc): Unconditionally use `kalloc'.
(ipc_table_free): Unconditionally use `kfree'.
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Previously, the pageout code traversed the list of pages in an object
instead of the list of inactive pages.
* vm/vm_pageout.c (vm_pageout_scan): Fix traversing the list of
inactive pages.
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This turns mistakes as the one corrected in e59f05e9 into compile-time
errors.
* kern/queue.h: Add a new macro, queue_assert, and use it to assert
that all arguments given to the queue macros have the correct type.
* device/net_io.c (ENQUEUE_DEAD): Adapt to the fact that
`queue_next(q)' is no longer an lvalue.
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Previously, the pageout code traversed the hash table chain instead of
the list of inactive pages. The code merely compiled by accident,
because the `struct page' also has a field called `next' for the hash
table chain.
* vm/vm_pageout.c (vm_pageout_scan): Fix traversing the list of
inactive pages.
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* vm/vm_object.c (vm_object_terminate): Drop debugging remnants.
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* Makefile.am (clib_routines): Steal `__umoddi3'.
* kern/printf.c (MAXBUF): Increase size.
(printnum, _doprnt): Handle long long integers.
* kern/printf.h (printnum): Adjust declaration.
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* vm/vm_kern.c (kmem_init): Fix panic message.
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* i386/i386at/immc.c (immc_cnputc): Fix line wrapping.
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* kern/server_loop.ch: Remove superfluous file.
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* kern/bootstrap.c (boot_script_exec_cmd): Improve error handling.
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* doc/mach.texi (vm_wire): Document that the host port does not have to be
privileged.
* include/mach/mach_hosts.defs (vm_wire): Use mach_port_t instead of
host_priv_t.
* vm/vm_map.h (vm_map): Add user_wired field.
* vm/vm_map.c (vm_map_setup): Initialize user_wired field to 0.
(vm_map_pageable_common, vm_map_entry_delete, vm_map_copy_overwrite,
vm_map_copyout_page_list, vm_map_copyin_page_list): When switching
user_wired_count field of entry between 0 and non-0, accumulate the
corresponding size into the user_wired field of map.
* vm/vm_user.c (vm_wire): Turn host parameter into port parameter, and
inline a version of convert_port_to_host_priv which records whether the host
port is privileged or not. When it is not privileged, check whether
the additional amount to user_wired will overcome 64KiB.
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* linux/src/include/linux/string.h (strcpy, strncpy, strcat, strncat,
strchr, strrchr, strlen, strnlen, strcmp, strncmp, memmove,
memscan): Comment out extern declarations.
* linux/dev/include/asm-i386/string.h (strcpy, strncpy, strcat, strncat,
strcmp, strncmp, strchr, strrchr, strlen, __memcpy, __constant_memcpy,
memmove, memchr, __memset_generic, __constant_c_memset, strnlen,
__constant_c_and_count_memset, memscan): Turn extern inline into static
inline.
* linux/dev/include/linux/fs.h (mark_buffer_uptodate): Likewise.
* linux/src/include/asm-i386/bitops.h (set_bit, clear_bit, change_bit,
test_and_set_bit, test_and_clear_bit, test_and_change_bit, test_bit,
find_first_zero_bit, find_next_zero_bit, ffz, ffs): Likewise.
* linux/src/include/asm-i386/io.h (virt_to_phys, phys_to_virt, __out##s,
__in##s, ins##s, outs##s): Likewise.
* linux/src/include/asm-i386/semaphore.h (down, down_interruptible, up):
Likewise.
* linux/src/include/asm-i386/segment.h [!__OPTIMIZE]: Emit an ud2 instruction
instead of an undefined reference.
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* Makefrag.am (EXTRA_DIST): Add ipc/notify.defs.
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Previously, running `../configure ...' to reconfigure an out-of-tree
build would link `machine' to `i386/i386' instead of `../i386/i386'
(i.e. point to the build directory instead to the source) if
`i386/i386' also exists in the build directory because of a previous
build.
* configfrag.ac: Prefix machine link target with `$srcdir'.
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* linux/dev/drivers/block/ahci.c (ahci_identify): Restore flags before
returning on timeout.
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* linux/dev/drivers/block/ahci.c (ahci_probe_dev): Print messages when
device is present but powered down.
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* ddb/db_trap.c (db_task_trap): Automatically display stack traces if
an unexpected trap occurs.
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Improve the immediate console to the point that it can be enabled and
display e.g. assertion failures from very early on (i.e. from
`c_boot_entry').
* device/cons.h (romgetc, romputc): New declarations.
* i386/configfrag.ac: Add configuration variable.
* i386/i386at/conf.c (dev_name_list): Add entry.
* i386/i386at/cons_conf.c (constab): Add entry.
* i386/i386at/immc.c: Add missing includes.
(immc_cnprobe, immc_cninit, immc_cngetc, immc_romputc): New functions.
(immc_cnputc): Fix signature, use virtual addresses.
* i386/i386at/immc.h: New file.
* i386/i386at/kd.c: Use `#if ENABLE_IMMEDIATE_CONSOLE'.
* i386/i386at/kd.h (kd_setpos): Add missing declaration.
* i386/i386at/model_dep.c (c_boot_entry): Install immediate console as
early boot console.
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* i386/i386at/model_dep.c (rebootflag): Explain flag.
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This avoids calling `thread_deallocate' with an uninitialized value,
as found by the Clang Static Analyzer.
* kern/thread.c (kernel_thread): Fix error handling.
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* kern/printf.h (sprintf, snprintf, vsnprintf, printf): Add the
`printf' function attribute that allows the compiler to check the
format strings and arguments.
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* vm/vm_kern.c (kmem_alloc_aligned): Fix typo.
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* ipc/ipc_port.c (ipc_port_alloc_special): Use ip_alloc and ip_lock_init
macros instead of manually inlining them.
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* ipc/notify.defs: Fix typo.
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* Makefrag.am (gnumach.msgids): Add `notify.msgids' as prerequisite.
* Makerules.mig.am: Add rule to generate the list of message ids when
neither the client nor the server stubs are required.
* ipc/notify.defs: New file.
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Previously, the processor argument was not checked. If called with a
non-processor argument (like a task), `processor' is set to NULL,
triggering a page fault. Likewise for the other functions.
* kern/processor.c (processor_get_assignment): Fix argument handling.
* kern/task.c (task_get_assignment): Likewise.
* kern/thread.c (thread_get_assignment): Likewise.
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* Makefile.am: Move `-fno-strict-aliasing'...
* linux/Makefrag.am: ... here.
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* i386/i386/pcb.c (switch_ktss): Cleanly convert the value.
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* kern/exception.c (exception_parse_reply): Use `BAD_TYPECHECK'.
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* vm/vm_kern.c (kmem_realloc): Remove function.
(kmem_alloc_wired): Adopt comment.
* vm/vm_kern.h (kmem_realloc): Remove declaration.
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* linux/dev/include/linux/types.h (int8_t, uint8_t, int16_t, uint16_t,
int32_t, uint32_t, int64_t, uint64_t): New types.
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* ipc/ipc_table.c (ipc_table_entries): Remove.
(ipc_table_entries_size): Likewise.
(ipc_table_init): Remove initialization of `ipc_table_entries'.
(ipc_table_realloc): Remove function.
* ipc/ipc_table.h: Adjust comments.
(ipc_table_entries): Remove declaration.
(ipc_table_realloc): Likewise.
(it_entries_{alloc,reallocable,realloc,free}): Remove macros.
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* ipc/ipc_space.c (ipc_space_create): Drop size parameter.
* ipc/ipc_space.h (ipc_space_create): Adopt declaration, fix comment.
* kern/ipc_tt.c (ipc_task_init): Adopt accordingly.
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Declare functions looking up IPC entries that were previously inlined
manually with `static inline' so that they will be inlined into the
fast paths by the compiler.
* ipc/ipc_entry.c (ipc_entry_lookup, ipc_entry_get,
ipc_entry_dealloc): Move functions...
* ipc/ipc_space.h: ... here, and declare them as `static inline'.
* ipc/ipc_entry.h: Drop associated declarations.
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Currently, the port names are mapped to an IPC object (e.g. a port)
using a table. This, however, requires large chunks of continuous
memory, and leads to scalability problems as virtual kernel memory is
a scarce resource. To avoid excessive overhead, non-contiguous port
names are spilled into a splay tree.
Replace the IPC table with a radix tree. As the radix tree is able to
store non-contiguous names with reasonable overhead, we can drop the
splay tree as well.
* ipc/ipc_entry.c (ipc_entry_tree_collision): Remove function.
(ipc_entry_cache): New variable.
(ipc_entry_lookup): Replace with a radix tree lookup.
(ipc_entry_get): The free list handling is changed a little. Adopt
accordingly.
(ipc_entry_free_name): New function.
(ipc_entry_alloc): Adopt accordingly.
(ipc_entry_alloc_name): Likewise.
(ipc_entry_dealloc): Likewise.
(ipc_entry_grow_table): Remove function.
* ipc/ipc_entry.h (struct ipc_entry): Update comment, add field for
name and free list, remove unused fields.
(ipc_entry_cache, ie_alloc, ie_free): New declarations.
(struct ipc_tree_entry): Remove. Also remove any related declarations.
(ipc_entry_grow_table): Remove declaration.
* ipc/ipc_init.c (ipc_bootstrap): Adopt initialization.
* ipc/ipc_kmsg.c (ipc_kmsg_copyout_header): Use `ipc_entry_alloc'
instead of re-coding it. Adopt free list handling.
(ipc_kmsg_copyout_object): Adopt free list handling, store the name.
* ipc/ipc_object.c (ipc_object_copyout): Likewise.
(ipc_object_copyout_multiname): Likewise.
* ipc/ipc_space.c (ipc_space_create): Initialize radix tree and free list.
Drop table and splay tree initialization.
(ipc_space_destroy): Free ipc entries and radix tree, remove table and
splay tree cleanup.
* ipc/ipc_space.h (struct ipc_space): Add radix tree, free list, and size.
Remove all fields related to the table and splay tree.
* ddb/db_print.c (db_port_iterate): Adopt iteration.
(db_lookup_port): Adopt lookup.
* include/mach_debug/ipc_info.h: Remove unused parts of the debug interface.
* include/mach_debug/mach_debug.defs: Likewise.
* include/mach_debug/mach_debug_types.defs: Likewise.
* ipc/mach_debug.c: Likewise.
* ipc/ipc_right.c (ipc_right_reverse): Adopt lookup, store name.
(ipc_right_check): Adopt removal.
(ipc_right_destroy): Likewise.
(ipc_right_dealloc): Likewise.
(ipc_right_delta): Likewise.
(ipc_right_copyin): Adopt insertion, adopt removal.
(ipc_right_copyin_two): Adopt removal.
(ipc_right_copyout): Adopt insertion, adopt removal.
(ipc_right_rename): Likewise, also update comment.
* ipc/mach_port.c (mach_port_names): Adopt iteration.
(mach_port_get_set_status): Likewise.
* ipc/port.h: Update comment.
* ipc/ipc_hash.c: Delete file.
* ipc/ipc_hash.h: Likewise.
* ipc/ipc_splay.c: Likewise.
* ipc/ipc_splay.h: Likewise.
* Makefrag.am (libkernel_a_SOURCES): Remove these files.
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Currently, there is a hash table mapping (space, object) tuples to
`ipc_entry' objects. This hash table is intertwined with the IPC
tables. There is one hash table per IPC space, but it is only for the
entries in the IPC table. This hash table is called `local' in the
source. All IPC entries being spilled into the splay tree are instead
mapped by a global hash table.
Replace the local (i.e. per IPC space) reverse hash table with a radix
tree.
* ipc/ipc_entry.c (ipc_entry_grow_table): Adjust accordingly.
* ipc/ipc_entry.h (struct ipc_entry): Adjust comment.
* ipc/ipc_hash.c: Adjust comment explaining the local lookup table.
(IPC_LOCAL_HASH_INVARIANT): New macro.
(ipc_hash_local_lookup): Use the new `ipc_reverse_lookup' function.
(ipc_hash_local_insert): Use the new `ipc_reverse_insert' function.
(ipc_hash_local_delete): Use the new `ipc_reverse_remove' function.
* ipc/ipc_space.c (ipc_space_create): Initialize radix tree.
(ipc_space_destroy): Free radix tree.
* ipc/ipc_space.h (struct ipc_space): Add radix tree.
(ipc_reverse_insert): New function.
(ipc_reverse_remove): Likewise.
(ipc_reverse_remove_all): Likewise.
(ipc_reverse_lookup): Likewise.
* ipc/ipc_right.c (ipc_right_clean): Update comment.
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Today we can rely on the compiler to inline functions. Undoing this
manual optimization is a first step to replace the IPC tables.
* ipc/mach_msg.c (mach_msg_trap): Undo the manual inlining of
`ipc_entry_lookup', `ipc_entry_dealloc', and `ipc_entry_get'.
* ipc/ipc_kmsg.c (ipc_kmsg_copyin_header, ipc_kmsg_copyout_header): Likewise.
* kern/exception.c (exception_raise): Likewise.
* kern/ipc_mig.c (fast_send_right_lookup): Likewise.
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Import a radix tree library from Richard Braun's librbraun.
* Makefile.am (clib_routines): Steal `__ffsdi2'.
* Makefrag.am (libkernel_a_SOURCES): Add new files.
* kern/rdxtree.c: New file.
* kern/rdxtree.h: Likewise.
* kern/rdxtree_i.h: Likewise.
* kern/startup.c (setup_main): Initialize radix tree library.
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* kern/thread.c (stack_alloc): Report resource shortage.
* kern/sched_prim.h (stack_alloc): Adjust declaration accordingly.
* kern/thread_swap.c (thread_doswapin): Report resource shortage.
(swapin_thread_continue): If the swap-in fails, put the thread back on
the queue and go back to sleep.
* kern/thread_swap.h (thread_doswapin): Adjust declaration accordingly.
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* vm/vm_object.c (vm_object_copy_call): Gracefully handle resource
shortage by doing the allocation earlier and aborting the function if
unsuccessful.
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