09 Jan, 2006
40 commits
-
New multiplexer implementation. Decreases the number of kernel threads
required. Better handling when the user process receives a signal.Signed-off-by: Latchesar Ionkov
Cc: Eric Van Hensbergen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
If a 9pfs server crashes, v9fs_fd_close() is called. Subsequently, in
cleaning up by performing a umount() on the FS that was provided by this
server v9fs_fd_close() is called again, and uses the old, freed valus of
trans->priv. This patch ensures that trans->priv can be freed only once,
otherwise this function bails early.Signed-off-by: Michal Ostrowski
Signed-off-by: Eric Van Hensbergen
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This makes it possible for boot code to use screen_info without dragging in
all of tty.h.Signed-off-by: Brian Gerst
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add EMAC to my CREDITS entry.
Signed-off-by: Eugene Surovegin
Signed-off-by: Linus Torvalds -
Add desired 'diffstat' options to use for kernel patches.
Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Evgeniy Polyakov
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch fixes a data corruption in smb_proc_setattr_unix()
(smb_filetype_from_mode() returns an u32, and there are only four bytes
reserved for it in data.Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
PTRACE_SYSEMU{,_SINGLESTEP} is actually arch specific, for now, and the
current allocated number clashes with a ptrace code of frv, i.e.
PTRACE_GETFDPIC. I should have submitted this much earlier, anyway we get no
breakage for this.CC: Daniel Jacobowitz
Signed-off-by: Paolo 'Blaisorblade' Giarrusso
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove the redundant spinlock in the function resolve_symbol() as we are
not altering the module list, and we already hold the semaphore.Signed-off-by: Ashutosh Naik
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Reduce the size of the pageframe for NR_CPUS>4, CONFIG_PREEMPT back to the
minimal size by unionising both ->private and ->mapping with the pagetable
lock.It uses an anonymous struct and hence requires gcc-3.x.
Cc: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Reorder members of the kiocb structure to make sync kiocb setup faster. By
setting the elements sequentially, the write combining buffers on the CPU
are able to combine the writes into a single burst, which results in fewer
cache cycles being consumed, freeing them up for other code. This results
in a 10-20KB/s[*] increase on the bw_unix part of LMbench on my test
system.* The improvement varies based on what other patches are in the system,
as there are a number of bottlenecks, so this number is not absolutely
accurate.Signed-off-by: Benjamin LaHaise
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Currently TAINT_FORCED_RMMOD is totally unused. Because it is marked as
TAINT_FORCED_MODULE instead when user forced a module unload. This patch
marks it correctlySigned-off-by: Akinobu Mita
Cc: Rusty Russell
Cc: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Ensure that an exported symbol does not already exist in the kernel or in
some other module's exported symbol table. This is done by checking the
symbol tables for the exported symbol at the time of loading the module.
Currently this is done after the relocation of the symbol.Signed-off-by: Ashutosh Naik
Signed-off-by: Anand Krishnan
Cc: Rusty Russell
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Signed-off-by: Ben Collins
Cc: "Brown, Len"
Cc: linux-acpi@vger.kernel.org
Cc: Stelian Pop
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Do not use platform_device_register_simple() as it is going away, implement
->probe() and -remove() functions so manual binding and unbinding will work
with this driver.Signed-off-by: Dmitry Torokhov
Cc: Stelian Pop
Cc: Mattia Dongili
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Function prototypes belong into header files.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add a hook so architectures can validate /dev/mem mmap requests.
This is analogous to validation we already perform in the read/write
paths.The identity mapping scheme used on ia64 requires that each 16MB or
64MB granule be accessed with exactly one attribute (write-back or
uncacheable). This avoids "attribute aliasing", which can cause a
machine check.Sample problem scenario:
- Machine supports VGA, so it has uncacheable (UC) MMIO at 640K-768K
- efi_memmap_init() discards any write-back (WB) memory in the first granule
- Application (e.g., "hwinfo") mmaps /dev/mem, offset 0
- hwinfo receives UC mapping (the default, since memmap says "no WB here")
- Machine check abort (on chipsets that don't support UC access to WB
memory, e.g., sx1000)In the scenario above, the only choices are
- Use WB for hwinfo mmap. Can't do this because it causes attribute
aliasing with the UC mapping for the VGA MMIO space.
- Use UC for hwinfo mmap. Can't do this because the chipset may not
support UC for that region.
- Disallow the hwinfo mmap with -EINVAL. That's what this patch does.Signed-off-by: Bjorn Helgaas
Cc: Hugh Dickins
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Tidy up __HAVE_PHYS_MEM_ACCESS_PROT usage to make mmap_mem() easier to read.
Signed-off-by: Bjorn Helgaas
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove various things which were checking for gcc-1.x and gcc-2.x compilers.
From: Adrian Bunk
Some documentation updates and removes some code paths for gcc < 3.2.
Acked-by: Russell King
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
There's one scsi driver which doesn't compile due to weird __VA_ARGS__ tricks
and the rather useful scsi/sd.c is currently getting an ICE. None of the new
SAS code compiles, due to extensive use of anonymous unions. The V4L guys are
very good at exploiting the gcc-2.95.x macro expansion bug (_why_ does each
driver need to implement its own debug macros?) and various people keep on
sneaking in anonymous unions, which are rather nice.Plus anonymous unions are rather useful.
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch moves 'fork_out:' under 'bad_fork_free:', and removes now
unneeded 'if (retval)' check.Signed-off-by: Oleg Nesterov
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
"extern inline" doesn't make much sense.
Signed-off-by: Adrian Bunk
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I couldn't find any docs explaining the contents of /sys/block//stat,
so I wrote up the following. I'm not completely sure it's accurate - Jens,
could you give a yea or nay on this?In particular, the counts of read/write IOs and read/write sectors are
incremented in different places - it looks like they both increment as the
request is being finished, but I'm not completely sure of that.Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
sys_setpgid() allows to change ->pgrp of ptraced childs.
'man setpgid' does not tell anything about that, so I consider
this behaviour is a bug.Signed-off-by: Oleg Nesterov
Cc: Oren Laadan
Cc: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
setsid() does not work unless the calling process is a
thread_group_leader().'man setpgid' does not tell anything about that, so I consider this
behaviour is a bug.Signed-off-by: Oren Laadan
Cc: Oleg Nesterov
Cc: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
setpgid(0, pgid) or setpgid(forked_child_pid, pgid) does not work unless
the calling process is a thread_group_leader().'man setpgid' does not tell anything about that, so I consider this
behaviour is a bug.Signed-off-by: Oleg Nesterov
Cc: Oren Laadan
Cc: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
In fork, child should recopy parent's pgrp/tty after it has tasklist_lock.
Otherwise following a setpgid() on the parent, *after* copy_signal(), the
child will own a stale pgrp (which may be reused); (eg. if copy_mm()
sleeps a long while due to memory pressure). Similar issue for the tty.Signed-off-by: Oren Laadan
Cc: Oleg Nesterov
Cc: Roland McGrath
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This creates a new function, cciss_interrupt_mode called from
cciss_pci_init. This function determines what type of interrupt vector to
use, i.e., MSI, MSI-X, or IO-APIC.One noticeable difference is changing the interrupt field of the controller
struct to an array of 4 unsigned ints. The Smart Array HW is capable of
generating 4 distinct interrupts depending on the transport method in use
during operation. These are:#define DOORBELL_INT 0
Used to notify the contoller of configuration updates. We only use
this feature when in polling mode.#define PERF_MODE_INT 0
Used when the controller is in Performant Mode.#define SIMPLE_MODE_INT 2
Used when the controller is in Simple Mode (current Linux implementation).#define MEMQ_INT_MODE 3
Not used.When using IO-APIC interrupts these 4 lines are OR'ed together so when any
one fires an interrupt an is generated. In MSI or MSI-X mode this hardware
OR'ing is ignored. We must register for our interrupt depending on what
mode the controller is running. For Linux we use SIMPLE_MODE_INT
exclusively at this time. Please consider this for inclusion.Signed-off-by: Mike Miller
Cc: Jens Axboe
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove global event log in the tpm bios event measurement log code that
would have caused problems when the code was run concurrently. A log is
now allocated and attached to the seq file upon open and destroyed
appropriately.Signed-off-by: Kylene Jo Hall
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The problem. It is expected that /sbin/halt -p works exactly like
/sbin/halt, when the kernel does not implement power off functionality.The kernel can do a lot of work in the reboot notifiers and in
device_shutdown before we even get to machine_power_off. Some of that
shutdown is not safe if you are leaving the power on, and it definitely
gets in the way of using sysrq or pressing ctrl-alt-del. Since the
shutdown happens in generic code there is no way to fix this in
architecture specific code :(Some machines are kernel oopsing today because of this.
The simple solution is to turn LINUX_REBOOT_CMD_POWER_OFF into
LINUX_REBOOT_CMD_HALT if power_off functionality is not implemented.This has the unfortunate side effect of disabling the power off
functionality on architectures that leave pm_power_off to null and still
implement something in machine_power_off. And it will break the build on
some architectures that don't have a pm_power_off variable at all.On both counts I say tough.
For architectures like alpha that don't implement the pm_power_off variable
pm_power_off is declared in linux/pm.h and it is a generic part of our
power management code, and all architectures should implement it.For architectures like parisc that have a default power off method in
machine_power_off if pm_power_off is not implemented or fails. It is easy
enough to set the pm_power_off variable. And nothing bad happens there,
the machines just stop powering off.The current semantics are impossible without a flag at the top level so we
can avoid the problem code if a power off is not implemented. pm_power_off
is as good a flag as any with the bonus that it works without modification
on at least x86, x86_64, powerpc, and ppc today.Andrew can you pick this up and put this in the mm tree. Kernels that
don't compile or don't power off seem saner than kernels that oops or
panic. Until we get the arch specific patches for the problem
architectures this probably isn't smart to push into the stable kernel.
Unfortunately I don't have the time at the moment to walk through every
architecture and make them work. And even if I did I couldn't test it :(From: Hirokazu Takata
Add pm_power_off() for build fix of arch/m32r/kernel/process.c.
From: Miklos Szeredi
UML build fix
Signed-off-by: Eric W. Biederman
Signed-off-by: Hayato Fujiwara
Signed-off-by: Hirokazu Takata
Signed-off-by: Miklos Szeredi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The patch makes posix_fadvise return ESPIPE on FIFO/pipe in order to be
fully POSIX-compliant.Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Based on questions people have asked me. Repeatedly.
Signed-off-by: Rob Landley
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch forces RCU torture threads off various CPUs in the system
allowing them to become idle and go tickless. Meant to test support for
such tickless idle CPU in RCU.Signed-off-by: Srivatsa Vaddagiri
Cc: Dipankar Sarma
Cc: "Paul E. McKenney"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Kernels that have had Windows drivers loaded into them are undebuggable.
I've wasted a number of hours chasing bugs filed in Fedora bugzilla only to
find out much later that the user had used such 'helpers', and their
problems were unreproducable without them loaded.Acked-by: Arjan van de Ven
Signed-off-by: Dave Jones
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I found that blkp field was not used in kernel tree.
As most of the times NR_CPUS is a power of two and kmalloc() memory blocks
too, this extra field basically doubles the memory space allocated in
__alloc_percpu() to store the 'struct percpu_data'(for example, if NR_CPUS=8 on i386, kmalloc(4*8+4) returns a 64 bytes block
instead of a 32 bytes block after this patch)Signed-off-by: Eric Dumazet
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch inlines the single user of struct super_block field
s_old_blocksize and removes the field.Signed-off-by: Pekka Enberg
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Minor update to Documentation/applying-patches.txt
Signed-off-by: Jesper Juhl
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
linux/delay.h included twice
Signed-off-by: Nicolas Kaiser
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
mmap() returns -EINVAL if given a zero length, and thus elf_map() in
binfmt_elf.c does likewise if it attempts to map a (page-aligned) ELF
segment with zero filesize. Such a situation never arises with the default
linker scripts, but there's nothing inherently wrong with zero-filesize
(but non-zero memsize) ELF segments. Custom linker scripts can generate
them, and the kernel should be able to map them; this patch makes it so.Signed-off-by: David Gibson
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The parameter to put_cpu_var() is unreferenced by the implementation, and
the compiler doesn't try to comprehend comments, so this wouldn't cause any
problem, but if bugged me enough to post a fix :-)Signed-off-by: David S. Miller
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
