Jeff Garzik [Wed, 27 Sep 2006 22:01:53 +0000 (18:01 -0400)]
Merge branch 'upstream' of git://lost.foo-projects.org/~ahkok/git/netdev-2.6 into tmp
Olof Johansson [Wed, 27 Sep 2006 19:02:26 +0000 (14:02 -0500)]
[PATCH] spidernet: Use pci_dma_mapping_error()
A driver shouldn't compare to DMA_ERROR_CODE directly, use
pci_dma_mapping_error() instead.
Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:44 +0000 (11:57 -0700)]
[PATCH] sky2: version 1.9
Version 1.9 is for 2.6.19.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:43 +0000 (11:57 -0700)]
[PATCH] sky2: fragmented receive for large MTU
Use hardware support for chained receive to break up large frames
into multiple pages. This avoids having to do a mult-page allocation
that can fail on a busy system due to fragmented memory.
For normal size MTU, this code behaves the same.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:42 +0000 (11:57 -0700)]
[PATCH] sky2: use netif_tx_lock instead of LLTX
Use the netdevice transmit lock via netif_tx_lock rather than putting
lock in device specific code and using lockless transmit. The code is
cleaner using netif_tx_lock, and the performance is same.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:41 +0000 (11:57 -0700)]
[PATCH] sky2: incremental transmit completion
Since a transmit can take several control blocks, the old code waited
until the last control block was marked as done. This code processes
the return values incrementally. This makes slots in the tx ring available
and less chance of getting stuck.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:40 +0000 (11:57 -0700)]
[PATCH] sky2: name irq after eth for irqbalance
Use the ethernet device name when requesting the irq because the
irqbalance daemon looks for the name when deciding policy.
Better to play along with this dubious heuristic.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:39 +0000 (11:57 -0700)]
[PATCH] sky2: workarounds for some 88e806x chips
Workarounds for 88e806x chips from the vendor driver.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:38 +0000 (11:57 -0700)]
[PATCH] sky2: use standard pci register capabilties for error register
Use the standard pci capability mechanism to access PCI express error
registers, rather than hard coding the offset. Mask off the PCI express
error from ever occuring on non-PCI express systems.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Stephen Hemminger [Tue, 26 Sep 2006 18:57:37 +0000 (11:57 -0700)]
[PATCH] sky2: gigabit full duplex negotiation
Look at the registers correctly, when doing gigabit full duplex.
Need to look for link partner result.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Jay Vosburgh [Tue, 26 Sep 2006 17:55:00 +0000 (10:55 -0700)]
[PATCH] bonding: update version number
I neglected to properly update the version number in the recent
patch series; this sets it to something reasonable.
Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Andrew Morton [Wed, 27 Sep 2006 07:40:36 +0000 (00:40 -0700)]
[PATCH] git-netdev-all: pc300_tty build fix
In file included from drivers/net/wan/pc300_tty.c:59:
drivers/net/wan/pc300.h:335: error: field 'pppdev' has incomplete type
Cc: Krzysztof Halasa <khc@pm.waw.pl>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Auke Kok [Wed, 27 Sep 2006 19:54:22 +0000 (12:54 -0700)]
e100, e1000, ixgb: increment version numbers
e100-3.5.17-k2
e1000-7.2.9-k2
ixgb-1.0.117-k2
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Auke Kok [Wed, 27 Sep 2006 19:54:19 +0000 (12:54 -0700)]
ixgb: convert to netdev_priv(netdev)
PCI error recovery code recently merged needs to use netdev_priv
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jesse Brandeburg [Wed, 27 Sep 2006 19:54:17 +0000 (12:54 -0700)]
ixgb: combine more rx descriptors to improve performance
We experimented with more descriptor buffer writebacks and found that
values larger than 8 give HW problems, but 8 is safe and gives us some
improved performance.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Vasily Averin [Wed, 27 Sep 2006 19:54:14 +0000 (12:54 -0700)]
e1000: possible memory leak in e1000_set_ringparam
Memory allocated for new tx_ring and rx_ring leaks if
e1000_setup_XX_resources() fails.c Also this patch reduces stack usage
(removed tx_new and rx_new) and uses kzalloc instead kmalloc+memset(0)
Signed-off-by: Vasily Averin <vvs@sw.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Linas Vepstas [Wed, 27 Sep 2006 19:54:11 +0000 (12:54 -0700)]
e1000: Janitor: Use #defined values for literals
Minor janitorial patch: use #defines for literal values.
Signed-off-by: Linas Vepstas <linas@austin.ibm.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Bruce Allan [Wed, 27 Sep 2006 19:54:08 +0000 (12:54 -0700)]
e1000: don't strip vlan ID if 8021q claims it
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:54:05 +0000 (12:54 -0700)]
e1000: rework polarity, NVM, eeprom code and fixes.
Several minor issues exist in the low-level device handling code of
e1000. The NVM and EEPROM writing/reading code was updated which fixes
unneeded delays, adds proper eeprom aqcuiring steps and handle shadow
ram and flash access. Minor cosmetic adjustments to the polarity code
adding symbols. PHY reset code mistakenly distinguished between MAC
types instead of PHY types, and was fixes.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Auke Kok [Wed, 27 Sep 2006 19:54:02 +0000 (12:54 -0700)]
e1000: driver state fixes (race fix)
We were plagued by our interrupt handler posting a watchdog event which
could occur when our adapter was going down in case a late packet arrived
just before e1000_down() finished. This caused the watchdog timer to start
after the NIC was down and keep rescheduling it every N seconds. Once
the driver unloaded it would panic.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:53:59 +0000 (12:53 -0700)]
e1000: reduce RAR entries available for ICH8
Manageability is using one more RAR entry than we anticipated earlier
for ICH8.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:53:57 +0000 (12:53 -0700)]
e1000: add PCI-E capability detection code
Add code to display the detected PCI-E bus width.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Bruce Allan [Wed, 27 Sep 2006 19:53:54 +0000 (12:53 -0700)]
e1000: handle manageability for pci-e adapters at PHY powerdown
When powering down the PHY (if WoL is disabled) we should only check
copper PHY's and handle PCI-E adapters differently.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:53:51 +0000 (12:53 -0700)]
e1000: gather hardware bit tweaks.
Several hardware bits were set all over the driver and have been
consolidated into a single function.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jesse Brandeburg [Wed, 27 Sep 2006 19:53:48 +0000 (12:53 -0700)]
e1000: Maybe stop TX if not enough free descriptors
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Bruce Allan [Wed, 27 Sep 2006 19:53:45 +0000 (12:53 -0700)]
e1000: Jumbo frames fixes for 82573
Disable jumbo frames for 82573L alltogether and when ASPM is enabled
since the hardware has problems with it. For the NICs that do support
this in the 82573 series we set ERT_2048 to attempt to receive as much
traffic as early as we can.
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:53:42 +0000 (12:53 -0700)]
e1000: Fix MANC detection for PCIE adapters
Several manageability capability detection parts hinted towards
our code being incomplete for PCI-E. According to spec, we do not
want to poke any MANC bits at all.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:53:40 +0000 (12:53 -0700)]
e1000: allow ethtool to pass arbitrary speed advertisment
With a patch, ethtool can now signify the driver to advertise more
than just a single speed/duplex setting. This allows you to tell the
card to advertise in 10/100 in any speed if you don't have a gigabit
switch for instance.
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Mitch Williams [Wed, 27 Sep 2006 19:53:37 +0000 (12:53 -0700)]
e1000: add multicast stats counters
Add 4 multicast and broadcast hardware counters (rx/tx), and eliminate
as many non-hardware counters as possible.
Signed-off-by: Mitch Williams <mitch.a.williams@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Nicholas Nunley [Wed, 27 Sep 2006 19:53:34 +0000 (12:53 -0700)]
e1000: remove unused code and make symbols static
Signed-off-by: Nicholas Nunley <nicholas.d.nunley@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:53:31 +0000 (12:53 -0700)]
e1000: add enums for several link properties
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jeff Kirsher [Wed, 27 Sep 2006 19:53:28 +0000 (12:53 -0700)]
e1000: rename flow control symbols
Sogned-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Auke Kok [Wed, 27 Sep 2006 19:53:25 +0000 (12:53 -0700)]
e100: rework WoL and shutdown handling
Unify our shutdown/suspend/resume code and make it similar to e1000:
e1000_shutdown now calls suspend which does the exact same thing on
shutdown except saving PCI config state on suspend. WoL setup code
is now also more simple and works even when CONFIG_PM is not set, which
was previously broken.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Jesse Brandeburg [Wed, 27 Sep 2006 19:53:22 +0000 (12:53 -0700)]
e100: Add debugging code for cb cleaning.
Refine cb cleaning debug printout and print out all cleaned cbs' status.
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Auke Kok [Wed, 27 Sep 2006 19:53:19 +0000 (12:53 -0700)]
e1000: keep .suspend and .resume driver methods in CONFIG_PM
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Auke Kok [Wed, 27 Sep 2006 19:53:17 +0000 (12:53 -0700)]
e100, e1000, ixgb: Fix an impossible memory overwrite bug
We keep getting requests from people that think that this might be
an exploitable hole where we would overwrite 4 bytes in the netdev
struct if the pci name would exceed 15 characters. In reality this
will never happen but we fix it anyway.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Auke Kok [Wed, 27 Sep 2006 19:53:14 +0000 (12:53 -0700)]
e100, e1000, ixgb: update copyright header and remove LICENSE
This update to the copyright header adds the mailinglist, and aligns it
with the kernel licensing as well as remove the offending 'all rights
reserved'.
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Krzysztof Halasa [Tue, 26 Sep 2006 21:24:16 +0000 (23:24 +0200)]
[PATCH] Make PC300 WAN driver compile again
This patch removes accesses to the HDLC-internal data structures
from pc300 driver, thus enabling it to compile but breaking part
of its functionality.
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Krzysztof Halasa [Tue, 26 Sep 2006 21:23:45 +0000 (23:23 +0200)]
[PATCH] Modularize generic HDLC
This patch enables building of individual WAN protocol support
routines (parts of generic HDLC) as separate modules.
All protocol-private definitions are moved from hdlc.h file
to protocol drivers. User-space interface and interface
between generic HDLC and underlying low-level HDLC drivers
are unchanged.
Signed-off-by: Krzysztof Halasa <khc@pm.waw.pl>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Jeff Garzik [Tue, 26 Sep 2006 17:13:19 +0000 (13:13 -0400)]
Merge branch 'master' into upstream
Heiko Carstens [Tue, 26 Sep 2006 06:33:11 +0000 (23:33 -0700)]
[PATCH] s390: fix cmm kernel thread handling
Convert cmm's usage of kernel_thread to kthread_run. Also create the
cmmthread at module load time, so it is possible to check if creation of
the thread fails.
In addition the cmmthread now gets terminated when the module gets unloaded
instead of leaving a stale kernel thread. Also check the return values of
other registration functions at module load and handle their return values
appropriately.
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:10 +0000 (23:33 -0700)]
[PATCH] Make UML use ptrace-abi.h
Include the host architecture's ptrace-abi.h instead of ptrace.h.
There was some cpp mangling of names around the ptrace.h include to avoid
symbol clashes between UML and the host architecture. Most of these can go
away. The exception is struct pt_regs, which is convenient to have in
userspace, but must be renamed in order that UML can define its own.
ptrace-x86_64.h needed to have some now-obsolete cpp cruft and a declaration
removed.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:09 +0000 (23:33 -0700)]
[PATCH] Split i386 and x86_64 ptrace.h
The use of SEGMENT_RPL_MASK in the i386 ptrace.h introduced by
x86-allow-a-kernel-to-not-be-in-ring-0.patch broke the UML build, as UML
includes the underlying architecture's ptrace.h, but has no easy access to the
x86 segment definitions.
Rather than kludging around this, as in the past, this patch splits the
userspace-usable parts, which are the bits that UML needs, of ptrace.h into
ptrace-abi.h, which is included back into ptrace.h. Thus, there is no net
effect on i386.
As a side-effect, this creates a ptrace header which is close to being usable
in /usr/include.
x86_64 is also treated in this way for consistency. There was some trailing
whitespace there, which is cleaned up.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alan Cox [Tue, 26 Sep 2006 06:33:08 +0000 (23:33 -0700)]
[PATCH] UML: tty locking
Ensure current->signal->tty doesn't get freed during log_exec().
Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:08 +0000 (23:33 -0700)]
[PATCH] uml: stack usage reduction
The KSTK_* macros used an inordinate amount of stack. In order to overcome
an impedance mismatch between their interface, which just returns a single
register value, and the interface of get_thread_regs, which took a full
pt_regs, the implementation created an on-stack pt_regs, filled it in, and
returned one field. do_task_stat calls KSTK_* twice, resulting in two
local pt_regs, blowing out the stack.
This patch changes the interface (and name) of get_thread_regs to just
return a single register from a jmp_buf.
The include of archsetjmp.h" in registers.h to get the definition of
jmp_buf exposed a bogus include of <setjmp.h> in start_up.c. <setjmp.h>
shouldn't be used anywhere any more since UML uses the klibc
setjmp/longjmp.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Paolo 'Blaisorblade' Giarrusso [Tue, 26 Sep 2006 06:33:07 +0000 (23:33 -0700)]
[PATCH] uml: clean our set_ether_mac
Clean set_ether_mac usage. Maybe could also be removed, but surely it can't
be a global function taking a void* argument.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Acked-by: Jeff Dike <jdike@addtoit.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:06 +0000 (23:33 -0700)]
[PATCH] uml: Remove unused variable
timer_irq_inited was useless, so it is removed.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:05 +0000 (23:33 -0700)]
[PATCH] uml: timer cleanups
set_interval returns an error instead of panicing if setitimer fails. Some of
its callers now check the return.
enable_timer is largely tt-mode-specific, so it is marked as such, and the
only skas-mode caller is made to call set-interval instead.
user_time_init was a no-value-added wrapper around set_interval, so it is
gone.
Since set_interval is now called from kernel code, callers no longer pass
ITIMER_* to it. Instead, they pass a flag which is converted into ITIMER_REAL
or ITIMER_VIRTUAL.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:04 +0000 (23:33 -0700)]
[PATCH] uml: Move signal handlers to arch code
Have most signals go through an arch-provided handler which recovers the
sigcontext and then calls a generic handler. This replaces the
ARCH_GET_SIGCONTEXT macro, which was somewhat fragile. On x86_64, recovering
%rdx (which holds the sigcontext pointer) must be the first thing that
happens. sig_handler duly invokes that first, but there is no guarantee that
I can see that instructions won't be reordered such that %rdx is used before
that. Having the arch provide the handler seems much more robust.
Some signals in some parts of UML require their own handlers - these places
don't call set_handler any more. They call sigaction or signal themselves.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:04 +0000 (23:33 -0700)]
[PATCH] uml: SIGIO cleanups
- Various cleanups in the sigio code.
- Removed explicit zero-initializations of a few structures.
- Improved some error messages.
- An API change - there was an asymmetry between reactivate_fd calling
maybe_sigio_broken, which goes through all the machinery of figuring out if
a file descriptor supports SIGIO and applying the workaround to it if not,
and deactivate_fd, which just turns off the descriptor.
This is changed so that only activate_fd calls maybe_sigio_broken, when
the descriptor is first seen. reactivate_fd now calls add_sigio_fd, which
is symmetric with ignore_sigio_fd.
This removes a recursion which makes a critical section look more critical
than it really was, obsoleting a big comment to that effect. This requires
keeping track of all descriptors which are getting the SIGIO treatment, not
just the ones being polled at any given moment, so that reactivate_fd,
through add_sigio_fd, doesn't try to tell the SIGIO thread about descriptors
it doesn't care about.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:03 +0000 (23:33 -0700)]
[PATCH] uml: Improve SIGBUS diagnostics
UML can get a SIGBUS anywhere if the tmpfs mount being used for its memory
runs out of space. This patch adds a printk before the panic to provide a
clue as to what likely went wrong.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:02 +0000 (23:33 -0700)]
[PATCH] uml: Fix handling of failed execs of helpers
There were some bugs in handling failures to exec helper programs. errno was
passed back from the child with the wrong sign. It was also ignored. In the
case where it mattered, the errno from the (successful) read in the parent was
used instead.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:01 +0000 (23:33 -0700)]
[PATCH] uml: Whitespace fixes
arch/um/kernel/tlb.c had some pretty serious whitespace problems. I also
fixed some returns.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:01 +0000 (23:33 -0700)]
[PATCH] uml: Fix stack alignment
Stack randomization needs to be conditional on the personality allowing it.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:33:00 +0000 (23:33 -0700)]
[PATCH] uml: Use ARRAY_SIZE more assiduously
There were a bunch of missed ARRAY_SIZE opportunities.
Also, some formatting fixes in the affected areas of code.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeff Dike [Tue, 26 Sep 2006 06:32:59 +0000 (23:32 -0700)]
[PATCH] uml: Use klibc setjmp/longjmp
This patch adds an implementation of setjmp and longjmp to UML, allowing
access to the inside of a jmpbuf without needing the access macros formerly
provided by libc.
The implementation is stolen from klibc. I copy the relevant files into
arch/um. I have another patch which avoids the copying, but requires klibc be
in the tree.
setjmp and longjmp users required some tweaking. Includes of <setjmp.h> were
removed and includes of the UML longjmp.h were added where necessary. There
are also replacements of siglongjmp with UML_LONGJMP which I somehow missed
earlier.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:58 +0000 (23:32 -0700)]
[PATCH] PM: Add pm_trace switch
Add the pm_trace attribute in /sys/power which has to be explicitly set to
one to really enable the "PM tracing" code compiled in when CONFIG_PM_TRACE
is set (which modifies the machine's CMOS clock in unpredictable ways).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:57 +0000 (23:32 -0700)]
[PATCH] i386: Detect clock skew during suspend
Detect the situations in which the time after a resume from disk would be
earlier than the time before the suspend and prevent them from happening on
i386.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:57 +0000 (23:32 -0700)]
[PATCH] suspend: make it possible to disable serial console suspend
Hack uart_suspend_port() and uart_resume_port() so that serial console
ports are not suspended if CONFIG_DISABLE_CONSOLE_SUSPEND is set.
This makes it possible to debug the suspend and resume routines of all
device drivers as well as the lowest-level swsusp code with the help of the
serial console.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:56 +0000 (23:32 -0700)]
[PATCH] PM: make it possible to disable console suspending
Change suspend_console() so that it waits for all consoles to flush the
remaining messages and make it possible to switch the console suspending off
with the help of a Kconfig option.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Stefan Seyfried <seife@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:55 +0000 (23:32 -0700)]
[PATCH] swsusp: Use memory bitmaps during resume
Make swsusp use memory bitmaps to store its internal information during the
resume phase of the suspend-resume cycle.
If the pfns of saveable pages are saved during the suspend phase instead of
the kernel virtual addresses of these pages, we can use them during the resume
phase directly to set the corresponding bits in a memory bitmap. Then, this
bitmap is used to mark the page frames corresponding to the pages that were
saveable before the suspend (aka "unsafe" page frames).
Next, we allocate as many page frames as needed to store the entire suspend
image and make sure that there will be some extra free "safe" page frames for
the list of PBEs constructed later. Subsequently, the image is loaded and, if
possible, the data loaded from it are written into their "original" page
frames (ie. the ones they had occupied before the suspend).
The image data that cannot be written into their "original" page frames are
loaded into "safe" page frames and their "original" kernel virtual addresses,
as well as the addresses of the "safe" pages containing their copies, are
stored in a list of PBEs. Finally, the list of PBEs is used to copy the
remaining image data into their "original" page frames (this is done
atomically, by the architecture-dependent parts of swsusp).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:54 +0000 (23:32 -0700)]
[PATCH] swsusp: Introduce memory bitmaps
Introduce the memory bitmap data structure and make swsusp use in the suspend
phase.
The current swsusp's internal data structure is not very efficient from the
memory usage point of view, so it seems reasonable to replace it with a data
structure that will require less memory, such as a pair of bitmaps.
The idea is to use bitmaps that may be allocated as sets of individual pages,
so that we can avoid making allocations of order greater than 0. For this
reason the memory bitmap structure consists of several linked lists of objects
that contain pointers to memory pages with the actual bitmap data. Still, for
a typical system all of these lists fit in a single page, so it's reasonable
to introduce an additional mechanism allowing us to allocate all of them
efficiently without sacrificing the generality of the design. This is done
with the help of the chain_allocator structure and associated functions.
We need to use two memory bitmaps during the suspend phase of the
suspend-resume cycle. One of them is necessary for marking the saveable
pages, and the second is used to mark the pages in which to store the copies
of them (aka image pages).
First, the bitmaps are created and we allocate as many image pages as needed
(the corresponding bits in the second bitmap are set as soon as the pages are
allocated). Second, the bits corresponding to the saveable pages are set in
the first bitmap and the saveable pages are copied to the image pages.
Finally, the first bitmap is used to save the kernel virtual addresses of the
saveable pages and the second one is used to save the contents of the image
pages.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:52 +0000 (23:32 -0700)]
[PATCH] swsusp: Introduce some helpful constants
Introduce some constants that hopefully will help improve the readability of
code in kernel/power/snapshot.c.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:52 +0000 (23:32 -0700)]
[PATCH] Change the name of pagedir_nosave
The name of the pagedir_nosave variable does not make sense any more, so it
seems reasonable to change it to something more meaningful.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:51 +0000 (23:32 -0700)]
[PATCH] swsusp: clean up suspend header
Remove some things that are no longer used or defined elsewhere from suspend.h
and make the inline version of software_suspend() return the right error code.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:50 +0000 (23:32 -0700)]
[PATCH] swsusp: Fix alloc_pagedir
Get rid of the FIXME in kernel/power/snapshot.c#alloc_pagedir() and
simplify the functions called by it.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:50 +0000 (23:32 -0700)]
[PATCH] swsusp: Reorder memory-allocating functions
Move some functions in kernel/power/snapshot.c to a better place (in the
same file) and introduce free_image_page() (will be necessary in the
future).
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:49 +0000 (23:32 -0700)]
[PATCH] swsusp: Fix mark_free_pages
Clean up mm/page_alloc.c#mark_free_pages() and make it avoid clearing
PageNosaveFree for PageNosave pages. This allows us to get rid of an ugly
hack in kernel/power/snapshot.c#copy_data_pages().
Additionally, the page-copying loop in copy_data_pages() is moved to an
inline function.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:48 +0000 (23:32 -0700)]
[PATCH] Disable CPU hotplug during suspend
The current suspend code has to be run on one CPU, so we use the CPU
hotplug to take the non-boot CPUs offline on SMP machines. However, we
should also make sure that these CPUs will not be enabled by someone else
after we have disabled them.
The functions disable_nonboot_cpus() and enable_nonboot_cpus() are moved to
kernel/cpu.c, because they now refer to some stuff in there that should
better be static. Also it's better if disable_nonboot_cpus() returns an
error instead of panicking if something goes wrong, and
enable_nonboot_cpus() has no reason to panic(), because the CPUs may have
been enabled by the userland before it tries to take them online.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:46 +0000 (23:32 -0700)]
[PATCH] Make swsusp avoid memory holes and reserved memory regions on x86_64
On x86_64 machines with more than 2 GB of RAM there are large memory gaps
(with no corresponding kernel virtual addresses) and reserved memory
regions between areas of usable physical RAM. Moreover, if CONFIG_FLATMEM
is set, they appear within the normal zone. swsusp should not try to save
them, so the corresponding page structs have to be marked as 'nosave'.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Mel Gorman <mel@csn.ul.ie>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:46 +0000 (23:32 -0700)]
[PATCH] swsusp: struct snapshot_handle cleanup
Add comments describing struct snapshot_handle and its members, change the
confusing name of its member 'page' to 'cur'.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rafael J. Wysocki [Tue, 26 Sep 2006 06:32:45 +0000 (23:32 -0700)]
[PATCH] swsusp: clean up browsing of pfns
Clean up some loops over pfns for each zone in snapshot.c: reduce the
number of additions to perform, rework detection of saveable pages and make
the code a bit less difficult to understand, hopefully.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andrew Morton [Tue, 26 Sep 2006 06:32:44 +0000 (23:32 -0700)]
[PATCH] swsusp: read speedup
Implement async reads for swsusp resuming.
Crufty old PIII testbox:
15.7 MB/s -> 20.3 MB/s
Sony Vaio:
14.6 MB/s -> 33.3 MB/s
I didn't implement the post-resume bio_set_pages_dirty(). I don't really
understand why resume needs to run set_page_dirty() against these pages.
It might be a worry that this code modifies PG_Uptodate, PG_Error and
PG_Locked against the image pages. Can this possibly affect the resumed-into
kernel? Hopefully not, if we're atomically restoring its mem_map?
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Jens Axboe <axboe@suse.de>
Cc: Laurent Riffard <laurent.riffard@free.fr>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andrew Morton [Tue, 26 Sep 2006 06:32:43 +0000 (23:32 -0700)]
[PATCH] swsusp: add read-speed instrumentation
Add some instrumentation to the swsusp readin code to show what bandwidth
we're achieving.
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andrew Morton [Tue, 26 Sep 2006 06:32:42 +0000 (23:32 -0700)]
[PATCH] swsusp: write speedup
Switch the swsusp writeout code from 4k-at-a-time to 4MB-at-a-time.
Crufty old PIII testbox:
12.9 MB/s -> 20.9 MB/s
Sony Vaio:
14.7 MB/s -> 26.5 MB/s
The implementation is crude. A better one would use larger BIOs, but wouldn't
gain any performance.
The memcpys will be mostly pipelined with the IO and basically come for free.
The ENOMEM path has not been tested. It should be.
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andrew Morton [Tue, 26 Sep 2006 06:32:41 +0000 (23:32 -0700)]
[PATCH] swsusp: add write-speed instrumentation
Add some instrumentation to the swsusp writeout code to show what bandwidth
we're achieving.
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Steven Whitehouse [Tue, 26 Sep 2006 06:32:40 +0000 (23:32 -0700)]
[PATCH] add DIV_ROUND_UP()
Add the DIV_ROUND_UP() helper macro: divide `n' by `d', rounding up.
Stolen from the gfs2 tree(!) because the swsusp patches need it.
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fernando J. Pereda [Tue, 26 Sep 2006 06:32:37 +0000 (23:32 -0700)]
[PATCH] alpha: Fix ALPHA_EV56 dependencies typo
There appears to be a typo in the EV56 config option. NORITAKE and PRIMO are
be able to set a variation of either.
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Josh Triplett [Tue, 26 Sep 2006 06:32:36 +0000 (23:32 -0700)]
[PATCH] mtrr: Add lock annotations for prepare_set and post_set
The functions prepare_set and post_set in kernel/cpu/mtrr/generic.c wrap
the spinlock set_atomicity_lock: prepare_set returns with the lock held,
and post_set releases the lock without acquiring it. Add lock annotations
to these two functions so that sparse can check callers for lock pairing,
and so that sparse will not complain about these functions since they
intentionally use locks in this manner.
Signed-off-by: Josh Triplett <josh@freedesktop.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
john stultz [Tue, 26 Sep 2006 06:32:35 +0000 (23:32 -0700)]
[PATCH] i386: Kill references to xtime
Remove all references to xtime in i386 and replace them w/
get/set_timeofday(). Requires some ugly and uncertain changes to APM, but
has been lightly tested to work.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Alan Cox [Tue, 26 Sep 2006 06:32:34 +0000 (23:32 -0700)]
[PATCH] Voyager: tty locking
Voyager fiddles with current->signal.tty without locking. It turns out
that the code in question has already cleared current->signal.tty correctly
because daemonize() does the right thing already.
The signal handling also appears to be incorrect as it does an unprotected
sigfillset that also appears unneccessary. As I don't have a bowtie and am
therefore not a qualified voyager maintainer I leave that to James.
Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Andrew Morton [Tue, 26 Sep 2006 06:32:33 +0000 (23:32 -0700)]
[PATCH] smp_call_function_single() cleanup
If we're going to implement smp_call_function_single() on three architecture
with the same prototype then it should have a declaration in a
non-arch-specific header file.
Move it into <linux/smp.h>.
Cc: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Stephane Eranian [Tue, 26 Sep 2006 06:32:32 +0000 (23:32 -0700)]
[PATCH] i386: add smp_call_function_single
Continiung the series of small patches necessary for the perfmon subsystem,
here is a patch that adds support for the smp_call_function_single()
function for i386. It exists for almost all other architectures but i386.
The perfmon subsystem needs it in one case to free some state on a
designated remote CPU.
Signed-off-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rusty Russell [Tue, 26 Sep 2006 06:32:32 +0000 (23:32 -0700)]
[PATCH] x86: remove unused include from efi_stub.S
Remove unnecessary include from efi_stub.S
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rusty Russell [Tue, 26 Sep 2006 06:32:31 +0000 (23:32 -0700)]
[PATCH] x86: trivial move of ptep_set_access_flags
Move ptep_set_access_flags to be closer to the other ptep accessors, and make
the indentation standard.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rusty Russell [Tue, 26 Sep 2006 06:32:30 +0000 (23:32 -0700)]
[PATCH] x86: trivial move of __HAVE macros in i386 pagetable headers
Move the __HAVE_ARCH_PTEP defines to accompany the function definitions.
Anything else is just a complete nightmare to track through the 2/3-level
paging code, and this caused duplicate definitions to be needed (pte_same),
which could have easily been taken care of with the asm-generic pgtable
functions.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rusty Russell [Tue, 26 Sep 2006 06:32:29 +0000 (23:32 -0700)]
[PATCH] x86: trivial pgtable.h __ASSEMBLY__ move
Parsing generic pgtable.h in assembler is simply crazy. None of this file is
needed in assembler code, and C inline functions and structures routine break
one or more different compiles.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Dave Hansen [Tue, 26 Sep 2006 06:32:29 +0000 (23:32 -0700)]
[PATCH] x86: enable VMSPLIT for highmem kernels
The current VMSPLIT Kconfig option is disabled whenever highmem is on.
This is a bit screwy because the people who need to change VMSPLIT the most
tend to be the ones with highmem and constrained lowmem.
So, remove the highmem dependency. But, re-include the dependency for the
"full 1GB of lowmem" option. You can't have the full 1GB of lowmem and
highmem because of the need for the vmalloc(), kmap(), etc... areas.
I thought there would be at least a bit of tweaking to do to
get it to work, but everything seems OK.
Boot tested on a 4GB x86 machine, and a 12GB 3-node NUMA-Q:
elm3b82:~# cat /proc/meminfo
MemTotal:
3695412 kB
MemFree:
3659540 kB
...
LowTotal:
2909008 kB
LowFree:
2892324 kB
...
elm3b82:~# zgrep PAE /proc/config.gz
CONFIG_X86_PAE=y
larry:~# cat /proc/meminfo
MemTotal:
11845900 kB
MemFree:
11786748 kB
...
LowTotal:
2855180 kB
LowFree:
2830092 kB
Signed-off-by: Dave Hansen <haveblue@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Ian Campbell [Tue, 26 Sep 2006 06:32:28 +0000 (23:32 -0700)]
[PATCH] Translate asm version of ELFNOTE macro into preprocessor macro
I've come across some problems with the assembly version of the ELFNOTE
macro currently in -mm. (in
x86-put-note-sections-into-a-pt_note-segment-in-vmlinux.patch)
The first is that older gas does not support :varargs in .macro
definitions (in my testing 2.17 does while 2.15 does not, I don't know
when it became supported). The Changes file says binutils >= 2.12 so I
think we need to avoid using it. There are no other uses in mainline or
-mm. Old gas appears to just ignore it so you get "too many arguments"
type errors.
Secondly it seems that passing strings as arguments to assembler macros
is broken without varargs. It looks like they get unquoted or each
character is treated as a separate argument or something and this causes
all manner of grief. I think this is because of the use of -traditional
when compiling assembly files.
Therefore I have translated the assembler macro into a pre-processor
macro.
I added the desctype as a separate argument instead of including it with
the descdata as the previous version did since -traditional means the
ELFNOTE definition after the #else needs to have the same number of
arguments (I think so anyway, the -traditional CPP semantics are pretty
fscking strange!).
With this patch I am able to define elfnotes in assembly like this with
both old and new assemblers.
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_OS, .asciz, "linux")
ELFNOTE(Xen, XEN_ELFNOTE_GUEST_VERSION, .asciz, "2.6")
ELFNOTE(Xen, XEN_ELFNOTE_XEN_VERSION, .asciz, "xen-3.0")
ELFNOTE(Xen, XEN_ELFNOTE_VIRT_BASE, .long, __PAGE_OFFSET)
Which seems reasonable enough.
Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Acked-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeremy Fitzhardinge [Tue, 26 Sep 2006 06:32:26 +0000 (23:32 -0700)]
[PATCH] x86: put .note.* sections into a PT_NOTE segment in vmlinux
This patch will pack any .note.* section into a PT_NOTE segment in the output
file.
To do this, we tell ld that we need a PT_NOTE segment. This requires us to
start explicitly mapping sections to segments, so we also need to explicitly
create PT_LOAD segments for text and data, and map the sections to them
appropriately. Fortunately, each section will default to its previous
section's segment, so it doesn't take many changes to vmlinux.lds.S.
This only changes i386 for now, but I presume the corresponding changes for
other architectures will be as simple.
This change also adds <linux/elfnote.h>, which defines C and Assembler macros
for actually creating ELF notes.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Hollis Blanchard <hollisb@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Zachary Amsden [Tue, 26 Sep 2006 06:32:25 +0000 (23:32 -0700)]
[PATCH] x86: add a bootparameter to reserve high linear address space
Add a boot parameter to reserve high linear address space for hypervisors.
This is necessary to allow dynamically loaded hypervisor modules, which might
not happen until userspace is already running, and also provides a useful tool
to benchmark the performance impact of reduced lowmem address space.
Signed-off-by: Zachary Amsden <zach@vmware.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Jeremy Fitzhardinge [Tue, 26 Sep 2006 06:32:25 +0000 (23:32 -0700)]
[PATCH] x86: make __FIXADDR_TOP variable to allow it to make space for a hypervisor
Make __FIXADDR_TOP a variable, so that it can be set to not get in the way of
address space a hypervisor may want to reserve.
Original patch by Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Cc: Gerd Hoffmann <kraxel@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rusty Russell [Tue, 26 Sep 2006 06:32:24 +0000 (23:32 -0700)]
[PATCH] x86: roll all the cpuid asm into one __cpuid call
It's a little neater, and also means only one place to patch for
paravirtualization.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Chris Wright [Tue, 26 Sep 2006 06:32:23 +0000 (23:32 -0700)]
[PATCH] x86: implement always-locked bit ops, for memory shared with an SMP hypervisor
Add "always lock'd" implementations of set_bit, clear_bit and change_bit and
the corresponding test_and_ functions. Also add "always lock'd"
implementation of cmpxchg. These give guaranteed strong synchronisation and
are required for non-SMP kernels running on an SMP hypervisor.
Signed-off-by: Ian Pratt <ian.pratt@xensource.com>
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rusty Russell [Tue, 26 Sep 2006 06:32:22 +0000 (23:32 -0700)]
[PATCH] x86: remove locally-defined ldt structure in favour of standard type
arch/i386/kernel/reboot.c defines its own struct to describe an ldt entry: it
should use struct Xgt_desc_struct (currently load_ldt is a macro, so doesn't
complain: paravirt patches make it warn).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Neil Horman [Tue, 26 Sep 2006 06:32:21 +0000 (23:32 -0700)]
[PATCH] apm: clean up module initalization
Clean up module initalization for apm.c. I had started by auditing for
proper return code checks in misc_register, but I found that in the event
of an initalization failure, a proc file and a kernel thread were left
hanging out. this patch properly cleans up those loose ends on any
initalization failure.
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Rolf Eike Beer [Tue, 26 Sep 2006 06:32:20 +0000 (23:32 -0700)]
[PATCH] Use BUG_ON(foo) instead of "if (foo) BUG()" in include/asm-i386/dma-mapping.h
Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Chuck Ebbert [Tue, 26 Sep 2006 06:32:19 +0000 (23:32 -0700)]
[PATCH] i386: show_registers(): try harder to print failing code
show_registers() tries to dump failing code starting 43 bytes before the
offending instruction, but this address can be bad, for example in a device
driver where the failing instruction is less than 43 bytes from the start
of the driver's code. When that happens, try to dump code starting at the
failing instruction instead of printing no code at all.
Signed-off-by: Chuck Ebbert <76306.1226@compuserve.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Keith Owens <kaos@ocs.com.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Clemens Ladisch [Tue, 26 Sep 2006 06:32:17 +0000 (23:32 -0700)]
[PATCH] hpet rtc emulation: add watchdog timer
To prevent the emulated RTC timer from stopping when interrupts are delayed
for too long, disable interrupts around all of the register initialization,
and check that the interrupt handler did not schedule the next interrupt in
the past.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Robert Picco <Robert.Picco@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Haavard Skinnemoen [Tue, 26 Sep 2006 06:32:17 +0000 (23:32 -0700)]
[PATCH] AVR32 MTD: AT49BV6416 platform device for ATSTK1000
FRegister a platform device for the AT49BV6416 NOR flash chip on the ATSTK1000
development board for use by the physmap MTD driver.
The SMC timings are set up before the platform device is registered so that no
board-specific mapping driver is necessary.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>