27 Sep, 2006
1 commit
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Since sys_sysctl is deprecated start allow it to be compiled out. This
should catch any remaining user space code that cares, and paves the way
for further sysctl cleanups.[akpm@osdl.org: If sys_sysctl() is not compiled-in, emit a warning]
Signed-off-by: Eric W. Biederman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Sep, 2006
1 commit
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Fix two problems with the CONFIG_EMBEDDED submenu:
(1) The menu was split in two by the rt_mutex patch, which moved
half the items into the "General setup" menu.(2) CONFIG_SYSCTL and CONFIG_UID16 were added to the main menu
instead of the submenu.Signed-off-by: Chuck Ebbert
Cc: Sam Ravnborg
Cc: Ingo Molnar
Cc: Thomas Gleixner
Cc: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Jul, 2006
3 commits
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Usage of taskstats interface by delay accounting.
Signed-off-by: Shailabh Nagar
Signed-off-by: Balbir Singh
Cc: Jes Sorensen
Cc: Peter Chubb
Cc: Erich Focht
Cc: Levent Serinol
Cc: Jay Lan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Create a "taskstats" interface based on generic netlink (NETLINK_GENERIC
family), for getting statistics of tasks and thread groups during their
lifetime and when they exit. The interface is intended for use by multiple
accounting packages though it is being created in the context of delay
accounting.This patch creates the interface without populating the fields of the data
that is sent to the user in response to a command or upon the exit of a task.
Each accounting package interested in using taskstats has to provide an
additional patch to add its stats to the common structure.[akpm@osdl.org: cleanups, Kconfig fix]
Signed-off-by: Shailabh Nagar
Signed-off-by: Balbir Singh
Cc: Jes Sorensen
Cc: Peter Chubb
Cc: Erich Focht
Cc: Levent Serinol
Cc: Jay Lan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Initialization code related to collection of per-task "delay" statistics which
measure how long it had to wait for cpu, sync block io, swapping etc. The
collection of statistics and the interface are in other patches. This patch
sets up the data structures and allows the statistics collection to be
disabled through a kernel boot parameter.Signed-off-by: Shailabh Nagar
Signed-off-by: Balbir Singh
Cc: Jes Sorensen
Cc: Peter Chubb
Cc: Erich Focht
Cc: Levent Serinol
Cc: Jay Lan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
01 Jul, 2006
2 commits
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Fix the INIT_ENV_ARG_LIMIT dependencies to what seems to have been
intended.Spotted by Jean-Luc Leger.
Signed-off-by: Adrian Bunk
Acked-by: Paolo 'Blaisorblade' Giarrusso
Cc: Jeff Dike
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The remaining counters in page_state after the zoned VM counter patches
have been applied are all just for show in /proc/vmstat. They have no
essential function for the VM.We use a simple increment of per cpu variables. In order to avoid the most
severe races we disable preempt. Preempt does not prevent the race between
an increment and an interrupt handler incrementing the same statistics
counter. However, that race is exceedingly rare, we may only loose one
increment or so and there is no requirement (at least not in kernel) that
the vm event counters have to be accurate.In the non preempt case this results in a simple increment for each
counter. For many architectures this will be reduced by the compiler to a
single instruction. This single instruction is atomic for i386 and x86_64.
And therefore even the rare race condition in an interrupt is avoided for
both architectures in most cases.The patchset also adds an off switch for embedded systems that allows a
building of linux kernels without these counters.The implementation of these counters is through inline code that hopefully
results in only a single instruction increment instruction being emitted
(i386, x86_64) or in the increment being hidden though instruction
concurrency (EPIC architectures such as ia64 can get that done).Benefits:
- VM event counter operations usually reduce to a single inline instruction
on i386 and x86_64.
- No interrupt disable, only preempt disable for the preempt case.
Preempt disable can also be avoided by moving the counter into a spinlock.
- Handling is similar to zoned VM counters.
- Simple and easily extendable.
- Can be omitted to reduce memory use for embedded use.References:
RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=113512330605497&w=2
RFC http://marc.theaimsgroup.com/?l=linux-kernel&m=114988082814934&w=2
local_t http://marc.theaimsgroup.com/?l=linux-kernel&m=114991748606690&w=2
V2 http://marc.theaimsgroup.com/?t=115014808400007&r=1&w=2
V3 http://marc.theaimsgroup.com/?l=linux-kernel&m=115024767022346&w=2
V4 http://marc.theaimsgroup.com/?l=linux-kernel&m=115047968808926&w=2Signed-off-by: Christoph Lameter
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
28 Jun, 2006
1 commit
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Core functions for the rt-mutex subsystem.
Signed-off-by: Ingo Molnar
Signed-off-by: Thomas Gleixner
Signed-off-by: Arjan van de Ven
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Jun, 2006
2 commits
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* git://git.kernel.org/pub/scm/linux/kernel/git/sam/kbuild: (40 commits)
kbuild: trivial fixes in Makefile
kbuild: adding symbols in Kconfig and defconfig to TAGS
kbuild: replace abort() with exit(1)
kbuild: support for %.symtypes files
kbuild: fix silentoldconfig recursion
kbuild: add option for stripping modules while installing them
kbuild: kill some false positives from modpost
kbuild: export-symbol usage report generator
kbuild: fix make -rR breakage
kbuild: append -dirty for updated but uncommited changes
kbuild: append git revision for all untagged commits
kbuild: fix module.symvers parsing in modpost
kbuild: ignore make's built-in rules & variables
kbuild: bugfix with initramfs
kbuild: modpost build fix
kbuild: check license compatibility when building modules
kbuild: export-type enhancement to modpost.c
kbuild: add dependency on kernel.release to the package targets
kbuild: `make kernelrelease' speedup
kconfig: KCONFIG_OVERWRITECONFIG
... -
Architecture specific configs like this have no business at all
in init/Kconfig. This prevents it from being set on x86-64Pointed out by H.Peter Anvin
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds
26 Jun, 2006
1 commit
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Make makes sysctl non-optional unless EMBEDDED is set. There are a number
of interfaces exposed via sysctl, enough that it has to be considered core
kernel functionality at this point.Signed-off-by: H. Peter Anvin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
21 Jun, 2006
1 commit
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* 'audit.b21' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: (25 commits)
[PATCH] make set_loginuid obey audit_enabled
[PATCH] log more info for directory entry change events
[PATCH] fix AUDIT_FILTER_PREPEND handling
[PATCH] validate rule fields' types
[PATCH] audit: path-based rules
[PATCH] Audit of POSIX Message Queue Syscalls v.2
[PATCH] fix se_sen audit filter
[PATCH] deprecate AUDIT_POSSBILE
[PATCH] inline more audit helpers
[PATCH] proc_loginuid_write() uses simple_strtoul() on non-terminated array
[PATCH] update of IPC audit record cleanup
[PATCH] minor audit updates
[PATCH] fix audit_krule_to_{rule,data} return values
[PATCH] add filtering by ppid
[PATCH] log ppid
[PATCH] collect sid of those who send signals to auditd
[PATCH] execve argument logging
[PATCH] fix deadlocks in AUDIT_LIST/AUDIT_LIST_RULES
[PATCH] audit_panic() is audit-internal
[PATCH] inotify (5/5): update kernel documentation
...Manual fixup of conflict in unclude/linux/inotify.h
20 Jun, 2006
1 commit
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In this implementation, audit registers inotify watches on the parent
directories of paths specified in audit rules. When audit's inotify
event handler is called, it updates any affected rules based on the
filesystem event. If the parent directory is renamed, removed, or its
filesystem is unmounted, audit removes all rules referencing that
inotify watch.To keep things simple, this implementation limits location-based
auditing to the directory entries in an existing directory. Given
a path-based rule for /foo/bar/passwd, the following table applies:passwd modified -- audit event logged
passwd replaced -- audit event logged, rules list updated
bar renamed -- rule removed
foo renamed -- untracked, meaning that the rule now applies to
the new locationAudit users typically want to have many rules referencing filesystem
objects, which can significantly impact filtering performance. This
patch also adds an inode-number-based rule hash to mitigate this
situation.The patch is relative to the audit git tree:
http://kernel.org/git/?p=linux/kernel/git/viro/audit-current.git;a=summary
and uses the inotify kernel API:
http://lkml.org/lkml/2006/6/1/145Signed-off-by: Amy Griffis
Signed-off-by: Al Viro
09 Jun, 2006
1 commit
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This makes it possible to change two options which were hardcoded sofar.
1. Any symbol can now take the role of CONFIG_MODULES
2. The more useful option is to change the list of default file names,
which kconfig uses to load the base configuration if .config isn't
available.Signed-off-by: Roman Zippel
Signed-off-by: Andrew Morton
Signed-off-by: Sam Ravnborg
09 May, 2006
1 commit
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This was already a bad plan when I argued against adding it in the first
place. Good riddance.Signed-off-by: David Woodhouse
19 Apr, 2006
1 commit
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Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds
11 Apr, 2006
1 commit
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Move the DOUBLEFAULT option from the top-level menu to the EMBEDDED menu.
Only applicable to X86_32.Signed-off-by: Randy Dunlap
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
26 Mar, 2006
2 commits
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* master.kernel.org:/pub/scm/linux/kernel/git/sam/kbuild: (46 commits)
kbuild: remove obsoleted scripts/reference_* files
kbuild: fix make help & make *pkg
kconfig: fix time ordering of writes to .kconfig.d and include/linux/autoconf.h
Kconfig: remove the CONFIG_CC_ALIGN_* options
kbuild: add -fverbose-asm to i386 Makefile
kbuild: clean-up genksyms
kbuild: Lindent genksyms.c
kbuild: fix genksyms build error
kbuild: in makefile.txt note that Makefile is preferred name for kbuild files
kbuild: replace PHONY with FORCE
kbuild: Fix bug in crc symbol generating of kernel and modules
kbuild: change kbuild to not rely on incorrect GNU make behavior
kbuild: when warning symbols exported twice now tell user this is the problem
kbuild: fix make dir/file.xx when asm symlink is missing
kbuild: in the section mismatch check try harder to find symbols
kbuild: fix section mismatch check for unwind on IA64
kbuild: kill false positives from section mismatch warnings for powerpc
kbuild: kill trailing whitespace in modpost & friends
kbuild: small update of allnoconfig description
kbuild: make namespace.pl CROSS_COMPILE happy
...Trivial conflict in arch/ppc/boot/Makefile manually fixed up
-
MODULE_PARM was actually breaking: recent gcc version optimize them out as
unused. It's time to replace the last users, which are generally in the
most unloved drivers anyway.Signed-off-by: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
24 Mar, 2006
1 commit
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Original patch from Paul Mundt, sysfs parts removed by me since they
were broken.Signed-off-by: Jens Axboe
13 Mar, 2006
1 commit
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I don't see any use case for the CONFIG_CC_ALIGN_* options:
- they are only available if EMBEDDED
- people using EMBEDDED will most likely also enable
CC_OPTIMIZE_FOR_SIZE
- the default for -Os is to disable alignmentIn case someone is doing performance comparisons and discovers that the
default settings gcc chooses aren't good, the only sane thing is to discuss
whether it makes sense to change this, not through offering options to change
this locally.Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Sam Ravnborg
08 Feb, 2006
1 commit
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Make SELinux depend on AUDIT as it requires the basic audit support to log
permission denials at all. Note that AUDITSYSCALL remains optional for
SELinux, although it can be useful in providing further information upon
denials.Signed-off-by: Stephen Smalley
Acked-by: James Morris
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
04 Feb, 2006
1 commit
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Do not allow people to create configurations with CONFIG_BROKEN=y.
The sole reason for CONFIG_BROKEN=y would be if you are working on fixing a
broken driver, but in this case editing the Kconfig file is trivial.Never ever should a user enable CONFIG_BROKEN.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Jan, 2006
1 commit
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Build kernel/intermodule.c only when required.
Signed-off-by: Adrian Bunk
Cc: Sam Ravnborg
Cc: David Woodhouse
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Jan, 2006
1 commit
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Trivial spelling fix s/socalled/so called/
Signed-off-by: Jesper Juhl
Signed-off-by: Adrian Bunk
12 Jan, 2006
1 commit
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It has no business being elsewhere and x86-64 doesn't need/want it.
Signed-off-by: Andi Kleen
Signed-off-by: Linus Torvalds
11 Jan, 2006
1 commit
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It seems the "make UID16 support optional" patch was checked when it
edited the -tiny tree some time ago, but it wasn't checked whether it
still matches the current situation when it was submitted for inclusion
in -mm. This patch fixes the following bugs:
- ARCH_S390X does no longer exist, nowadays this has to be expressed
through (S390 && 64BIT)
- in five architecture specific Kconfig files the UID16 options
weren't removedAdditionally, it changes the fragile negative dependencies of UID16 to
positive dependencies (new architectures are more likely to not require
UID16 support).Signed-off-by: Adrian Bunk
Acked-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
09 Jan, 2006
5 commits
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This adds an option to remove vm86 support under CONFIG_EMBEDDED. Saves
about 5k.This version eliminates most of the #ifdefs of the previous version and
instead uses function stubs in vm86.h. Also, release_vm86_irqs is moved
from asm-i386/irq.h to a more appropriate home in vm86.h so that the stubs
can live together.$ size vmlinux-baseline vmlinux-novm86
text data bss dec hex filename
2920821 523232 190652 3634705 377611 vmlinux-baseline
2916268 523100 190492 3629860 376324 vmlinux-novm86Signed-off-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
configurable support for ELF core dumps
text data bss dec hex filename
3330172 529036 190556 4049764 3dcb64 vmlinux-baseline
3325552 528912 190556 4045020 3db8dc vmlinux-no-elfadd/remove: 0/8 grow/shrink: 0/0 up/down: 0/-4424 (-4424)
function old new delta
fill_note 32 - -32
maydump 58 - -58
dump_seek 67 - -67
writenote 180 - -180
elf_dump_thread_status 274 - -274
fill_psinfo 308 - -308
fill_prstatus 466 - -466
elf_core_dump 3039 - -3039Signed-off-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Configurable 16-bit UID and friends support
This allows turning off the legacy 16 bit UID interfaces on embedded platforms.
text data bss dec hex filename
3330172 529036 190556 4049764 3dcb64 vmlinux-baseline
3328268 529040 190556 4047864 3dc3f8 vmlinuxFrom: Adrian Bunk
UID16 was accidentially disabled for !EMBEDDED.
Signed-off-by: Matt Mackall
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This adds configurable support for doublefault reporting on x86
add/remove: 0/3 grow/shrink: 0/1 up/down: 0/-13048 (-13048)
function old new delta
cpu_init 846 786 -60
doublefault_fn 188 - -188
doublefault_stack 4096 - -4096
doublefault_tss 8704 - -8704Signed-off-by: Matt Mackall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
configurable replacement for slab allocator
This adds a CONFIG_SLAB option under CONFIG_EMBEDDED. When CONFIG_SLAB is
disabled, the kernel falls back to using the 'SLOB' allocator.SLOB is a traditional K&R/UNIX allocator with a SLAB emulation layer,
similar to the original Linux kmalloc allocator that SLAB replaced. It's
signicantly smaller code and is more memory efficient. But like all
similar allocators, it scales poorly and suffers from fragmentation more
than SLAB, so it's only appropriate for small systems.It's been tested extensively in the Linux-tiny tree. I've also
stress-tested it with make -j 8 compiles on a 3G SMP+PREEMPT box (not
recommended).Here's a comparison for otherwise identical builds, showing SLOB saving
nearly half a megabyte of RAM:$ size vmlinux*
text data bss dec hex filename
3336372 529360 190812 4056544 3de5e0 vmlinux-slab
3323208 527948 190684 4041840 3dac70 vmlinux-slob$ size mm/{slab,slob}.o
text data bss dec hex filename
13221 752 48 14021 36c5 mm/slab.o
1896 52 8 1956 7a4 mm/slob.o/proc/meminfo:
SLAB SLOB delta
MemTotal: 27964 kB 27980 kB +16 kB
MemFree: 24596 kB 25092 kB +496 kB
Buffers: 36 kB 36 kB 0 kB
Cached: 1188 kB 1188 kB 0 kB
SwapCached: 0 kB 0 kB 0 kB
Active: 608 kB 600 kB -8 kB
Inactive: 808 kB 812 kB +4 kB
HighTotal: 0 kB 0 kB 0 kB
HighFree: 0 kB 0 kB 0 kB
LowTotal: 27964 kB 27980 kB +16 kB
LowFree: 24596 kB 25092 kB +496 kB
SwapTotal: 0 kB 0 kB 0 kB
SwapFree: 0 kB 0 kB 0 kB
Dirty: 4 kB 12 kB +8 kB
Writeback: 0 kB 0 kB 0 kB
Mapped: 560 kB 556 kB -4 kB
Slab: 1756 kB 0 kB -1756 kB
CommitLimit: 13980 kB 13988 kB +8 kB
Committed_AS: 4208 kB 4208 kB 0 kB
PageTables: 28 kB 28 kB 0 kB
VmallocTotal: 1007312 kB 1007312 kB 0 kB
VmallocUsed: 48 kB 48 kB 0 kB
VmallocChunk: 1007264 kB 1007264 kB 0 kB(this work has been sponsored in part by CELF)
From: Ingo Molnar
Fix 32-bitness bugs in mm/slob.c.
Signed-off-by: Matt Mackall
Signed-off-by: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
07 Jan, 2006
2 commits
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Sanitize some s390 Kconfig options. We have ARCH_S390, ARCH_S390X,
ARCH_S390_31, 64BIT, S390_SUPPORT and COMPAT. Replace these 6 options by
S390, 64BIT and COMPAT.Signed-off-by: Martin Schwidefsky
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The attached patch makes the SYSV IPC shared memory facilities use the new
ramfs facilities on a no-MMU kernel.The following changes are made:
(1) There are now shmem_mmap() and shmem_get_unmapped_area() functions to
allow the IPC SHM facilities to commune with the tiny-shmem and shmem
code.(2) ramfs files now need resizing using do_truncate() rather than by modifying
the inode size directly (see shmem_file_setup()). This causes ramfs to
attempt to bind a block of pages of sufficient size to the inode.(3) CONFIG_SYSVIPC is no longer contingent on CONFIG_MMU.
Signed-off-by: David Howells
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Jan, 2006
4 commits
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Trivial manual merge fixup for usb_find_interface clashes.
-
With modules, dynamic /dev, and uevents, people really want
CONFIG_HOTPLUG to be enabled in their kernels. If not, they can still
disable it, but it is discouraged.Signed-off-by: Greg Kroah-Hartman
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It makes zero sense to have hotplug, but not the netlink
events enabled today. Remove this option and merge the
kobject_uevent.h header into the kobject.h header file.Signed-off-by: Kay Sievers
Signed-off-by: Greg Kroah-Hartman
27 Dec, 2005
1 commit
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Module versioning support has been stable for a loong time
so let's get rid of the EXPERIMENTAL tag.Signed-off-by: Sam Ravnborg
21 Dec, 2005
1 commit
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It was a stupid workaround for the "static inline" vs.
"extern inline" issues of long ago, and it is what causes
schedule() to be inlined like crazy into kernel/sched.c
when -Os is specified.MIPS and S390 should probably do the same.
Now CC_OPTIMIZE_FOR_SIZE can be safely used on sparc64
once more.Signed-off-by: David S. Miller
