17 Jul, 2007
14 commits
-
Make zonelist creation policy selectable from sysctl/boot option v6.
This patch makes NUMA's zonelist (of pgdat) order selectable.
Available order are Default(automatic)/ Node-based / Zone-based.[Default Order]
The kernel selects Node-based or Zone-based order automatically.[Node-based Order]
This policy treats the locality of memory as the most important parameter.
Zonelist order is created by each zone's locality. This means lower zones
(ex. ZONE_DMA) can be used before higher zone (ex. ZONE_NORMAL) exhausion.
IOW. ZONE_DMA will be in the middle of zonelist.
current 2.6.21 kernel uses this.Pros.
* A user can expect local memory as much as possible.
Cons.
* lower zone will be exhansted before higher zone. This may cause OOM_KILL.Maybe suitable if ZONE_DMA is relatively big and you never see OOM_KILL
because of ZONE_DMA exhaution and you need the best locality.(example)
assume 2 node NUMA. node(0) has ZONE_DMA/ZONE_NORMAL, node(1) has ZONE_NORMAL.*node(0)'s memory allocation order:
node(0)'s NORMAL -> node(0)'s DMA -> node(1)'s NORMAL.
*node(1)'s memory allocation order:
node(1)'s NORMAL -> node(0)'s NORMAL -> node(0)'s DMA.
[Zone-based order]
This policy treats the zone type as the most important parameter.
Zonelist order is created by zone-type order. This means lower zone
never be used bofere higher zone exhaustion.
IOW. ZONE_DMA will be always at the tail of zonelist.Pros.
* OOM_KILL(bacause of lower zone) occurs only if the whole zones are exhausted.
Cons.
* memory locality may not be best.(example)
assume 2 node NUMA. node(0) has ZONE_DMA/ZONE_NORMAL, node(1) has ZONE_NORMAL.*node(0)'s memory allocation order:
node(0)'s NORMAL -> node(1)'s NORMAL -> node(0)'s DMA.
*node(1)'s memory allocation order:
node(1)'s NORMAL -> node(0)'s NORMAL -> node(0)'s DMA.
bootoption "numa_zonelist_order=" and proc/sysctl is supporetd.
command:
%echo N > /proc/sys/vm/numa_zonelist_orderWill rebuild zonelist in Node-based order.
command:
%echo Z > /proc/sys/vm/numa_zonelist_orderWill rebuild zonelist in Zone-based order.
Thanks to Lee Schermerhorn, he gives me much help and codes.
[Lee.Schermerhorn@hp.com: add check_highest_zone to build_zonelists_in_zone_order]
[akpm@linux-foundation.org: build fix]
Signed-off-by: KAMEZAWA Hiroyuki
Cc: Lee Schermerhorn
Cc: Christoph Lameter
Cc: Andi Kleen
Cc: "jesse.barnes@intel.com"
Signed-off-by: Lee Schermerhorn
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Beacuse SERIAL_PORT_DFNS is removed from include/asm-i386/serial.h and
include/asm-x86_64/serial.h. the serial8250_ports need to be probed late in
serial initializing stage. the console_init=>serial8250_console_init=>
register_console=>serial8250_console_setup will return -ENDEV, and console
ttyS0 can not be enabled at that time. need to wait till uart_add_one_port in
drivers/serial/serial_core.c to call register_console to get console ttyS0.
that is too late.Make early_uart to use early_param, so uart console can be used earlier. Make
it to be bootconsole with CON_BOOT flag, so can use console handover feature.
and it will switch to corresponding normal serial console automatically.new command line will be:
console=uart8250,io,0x3f8,9600n8
console=uart8250,mmio,0xff5e0000,115200n8
or
earlycon=uart8250,io,0x3f8,9600n8
earlycon=uart8250,mmio,0xff5e0000,115200n8it will print in very early stage:
Early serial console at I/O port 0x3f8 (options '9600n8')
console [uart0] enabled
later for console it will print:
console handover: boot [uart0] -> real [ttyS0]Signed-off-by:
Cc: Andi Kleen
Cc: Bjorn Helgaas
Cc: Russell King
Cc: Gerd Hoffmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Needed to get fixed virtual address for USB debug and earlycon with mmio.
Signed-off-by: Eric W. Biderman
Signed-off-by: Yinghai Lu
Cc: Andi Kleen
Cc: Bjorn Helgaas
Cc: Russell King
Cc: Gerd Hoffmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
for earlyprintk=ttyS0,9600 console=tty0 console=ttyS0,9600n8
the handover will happen from earlyser0 to tty0. but what we want is to
hand over to ttyS0.Later with serial-convert-early_uart-to-earlycon-for-8250.patch,
console=tty0 console=uart8250,io,0x3f8,9600n8
will handover to ttyS0 instead of tty0.
Signed-off-by: Yinghai Lu
Cc: Andi Kleen
Cc: Bjorn Helgaas
Cc: Russell King
Cc: Gerd Hoffmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Change name to buf according to the usage as name + index
Signed-off-by: Yinghai Lu
Cc: Andi Kleen
Cc: Bjorn Helgaas
Cc: Russell King
Cc: Gerd Hoffmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Some RS-232 devices require DTR to be asserted before they can be used. DTR
is normally asserted in uart_startup() when the port is opened. But we don't
actually open serial console ports, so assert DTR when the port is added.BTW:
earlyprintk and early_uart are hard coded to set DTR/RTS.rmk says
The only issue I can think of is the possibility for an attached modem to
auto-answer or maybe even auto-dial before the system is ready for it to do
so. Might have an undesirable cost implication for some running with such a
setup.Apart from that, I can't think of any other side effect of this specific
patch.Signed-off-by: Yinghai Lu
Acked-by: Russell King
Cc: Andi Kleen
Cc: Bjorn Helgaas
Cc: Gerd Hoffmann
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Remove all ids from the given idr tree. idr_destroy() only frees up
unused, cached idp_layers, but this function will remove all id mappings
and leave all idp_layers unused.A typical clean-up sequence for objects stored in an idr tree, will use
idr_for_each() to free all objects, if necessay, then idr_remove_all() to
remove all ids, and idr_destroy() to free up the cached idr_layers.Signed-off-by: Kristian Hoegsberg
Cc: Tejun Heo
Cc: Dave Airlie
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds an iterator function for the idr data structure. Compared
to just iterating through the idr with an integer and idr_find, this
iterator is (almost, but not quite) linear in the number of elements, as
opposed to the number of integers in the range covered by the idr. This
makes a difference for sparse idrs, but more importantly, it's a nicer way
to iterate through the elements.The drm subsystem is moving to idr for tracking contexts and drawables, and
with this change, we can use the idr exclusively for tracking these
resources.[akpm@linux-foundation.org: fix comment]
Signed-off-by: Kristian Hoegsberg
Cc: Tejun Heo
Cc: Dave Airlie
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This version brings a number of new checks, fixes for flase
positives, plus a clarification of the output to better guide use. Of
note:- checks for documentation for new __setup calls
- clearer reporting where braces and parenthesis are involved
- reports for closing brace and semi-colon spacing
- reports on unwanted externsThis patch includes an update to the documentation on checkpatch.pl
itself to clarify when it should be used and to indicate that it
is not intended as the final arbitor of style.Full changelog:
Andy Whitcroft (19):
Version: 0.07
ensure we do not apply control brace checks to preprocesor directives
add {u,s}{8,16,32,64} to the type matcher
accept lack of spacing after the semicolons in for (;;)
report new externs in .c files
fix up typedef exclusion for function prototypes
else trailing statements check need to account for \ at end of line
add enums to the type matcher
add missing check descriptions
suppress double reporting of ** spacing
report on do{ spacing issues
include an example of the brace/parenthesis in output
check for spacing after closing braces
prevent double reports on pointer spacing issues
handle blank continuation lines on macros
classify all reports error, warning, or check
revamp hanging { checks and apply in context
no spaces after the last ; in a for is ok
check __setup has a corresponding addition to documentationDavid Woodhouse (1):
limit character set used in patches and descriptions to UTF-8Signed-off-by: Andy Whitcroft
Cc: David Woodhouse
Cc: "Randy.Dunlap"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This is a correction for a macro which gives worst case compressed data
size by LZO1X.This patch was provided by the LZO author (Markus Oberhumer).
Signed-off-by: Nitin Gupta
Cc: "Markus F.X.J. Oberhumer"
Cc: "Richard Purdie"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Add entries to MAINTAINERS for I/OAT and DMAENGINE
Signed-off-by: Shannon Nelson
Cc: Chris Leech
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We have to check that also the second checkpoint list is non-empty before
dropping the transaction.Signed-off-by: Jan Kara
Cc: Chuck Ebbert
Cc: Kirill Korotaev
Cc:
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We have to check that also the second checkpoint list is non-empty before
dropping the transaction.Signed-off-by: Jan Kara
Cc: Chuck Ebbert
Cc: Kirill Korotaev
Cc:
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Recent breakage..
net/sunrpc/auth_gss/auth_gss.c:1002: warning: implicit declaration of function 'lock_kernel'
net/sunrpc/auth_gss/auth_gss.c:1004: warning: implicit declaration of function 'unlock_kernel'Cc: Trond Myklebust
Cc: "J. Bruce Fields"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Jul, 2007
24 commits
-
* git://git.infradead.org/battery-2.6:
git-battery vs git-acpi
Power supply class and drivers: remove non obligatory return statements
pda_power: clean up irq, timer
MAINTAINERS: Add maintainers for power supply subsystem and driversFixed up trivial conflict in drivers/w1/slaves/w1_ds2760.c manually
-
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (166 commits)
[SCSI] ibmvscsi: convert to use the data buffer accessors
[SCSI] dc395x: convert to use the data buffer accessors
[SCSI] ncr53c8xx: convert to use the data buffer accessors
[SCSI] sym53c8xx: convert to use the data buffer accessors
[SCSI] ppa: coding police and printk levels
[SCSI] aic7xxx_old: remove redundant GFP_ATOMIC from kmalloc
[SCSI] i2o: remove redundant GFP_ATOMIC from kmalloc from device.c
[SCSI] remove the dead CYBERSTORMIII_SCSI option
[SCSI] don't build scsi_dma_{map,unmap} for !HAS_DMA
[SCSI] Clean up scsi_add_lun a bit
[SCSI] 53c700: Remove printk, which triggers because of low scsi clock on SNI RMs
[SCSI] sni_53c710: Cleanup
[SCSI] qla4xxx: Fix underrun/overrun conditions
[SCSI] megaraid_mbox: use mutex instead of semaphore
[SCSI] aacraid: add 51245, 51645 and 52245 adapters to documentation.
[SCSI] qla2xxx: update version to 8.02.00-k1.
[SCSI] qla2xxx: add support for NPIV
[SCSI] stex: use resid for xfer len information
[SCSI] Add Brownie 1200U3P to blacklist
[SCSI] scsi.c: convert to use the data buffer accessors
... -
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (53 commits)
[TCP]: Verify the presence of RETRANS bit when leaving FRTO
[IPV6]: Call inet6addr_chain notifiers on link down
[NET_SCHED]: Kill CONFIG_NET_CLS_POLICE
[NET_SCHED]: act_api: qdisc internal reclassify support
[NET_SCHED]: sch_dsmark: act_api support
[NET_SCHED]: sch_atm: act_api support
[NET_SCHED]: sch_atm: Lindent
[IPV6]: MSG_ERRQUEUE messages do not pass to connected raw sockets
[IPV4]: Cleanup call to __neigh_lookup()
[NET_SCHED]: Revert "avoid transmit softirq on watchdog wakeup" optimization
[NETFILTER]: nf_conntrack: UDPLITE support
[NETFILTER]: nf_conntrack: mark protocols __read_mostly
[NETFILTER]: x_tables: add connlimit match
[NETFILTER]: Lower *tables printk severity
[NETFILTER]: nf_conntrack: Don't track locally generated special ICMP error
[NETFILTER]: nf_conntrack: Introduces nf_ct_get_tuplepr and uses it
[NETFILTER]: nf_conntrack: make l3proto->prepare() generic and renames it
[NETFILTER]: nf_conntrack: Increment error count on parsing IPv4 header
[NET]: Add ethtool support for NETIF_F_IPV6_CSUM devices.
[AF_IUCV]: Add lock when updating accept_q
... -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
9p: fix a race condition bug in umount which caused a segfault
9p: re-enable mount time debug option
9p: cache meta-data when cache=loose
net/9p: set error to EREMOTEIO if trans->write returns zero
net/9p: change net/9p module name to 9pnet
9p: Reorganization of 9p file system code -
* 'for-linus' of git://oss.sgi.com:8090/xfs/xfs-2.6: (37 commits)
[XFS] Fix lockdep annotations for xfs_lock_inodes
[LIB]: export radix_tree_preload()
[XFS] Fix XFS_IOC_FSBULKSTAT{,_SINGLE} & XFS_IOC_FSINUMBERS in compat mode
[XFS] Compat ioctl handler for handle operations
[XFS] Compat ioctl handler for XFS_IOC_FSGEOMETRY_V1.
[XFS] Clean up function name handling in tracing code
[XFS] Quota inode has no parent.
[XFS] Concurrent Multi-File Data Streams
[XFS] Use uninitialized_var macro to stop warning about rtx
[XFS] XFS should not be looking at filp reference counts
[XFS] Use is_power_of_2 instead of open coding checks
[XFS] Reduce shouting by removing unnecessary macros from dir2 code.
[XFS] Simplify XFS min/max macros.
[XFS] Kill off xfs_count_bits
[XFS] Cancel transactions on xfs_itruncate_start error.
[XFS] Use do_div() on 64 bit types.
[XFS] Fix remount,readonly path to flush everything correctly.
[XFS] Cleanup inode extent size hint extraction
[XFS] Prevent ENOSPC from aborting transactions that need to succeed
[XFS] Prevent deadlock when flushing inodes on unmount
... -
It depends on tristate I2C and it's trivial to make modular. The
current Kconfig allows I2C=m, I2C_ACORN=y, which doesn't work at
all; alternatives are dependency on I2C=y and making I2C_ACORN
itself a tristate. The latter is the right thing to do...Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
Acked-by: Russell King -
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds
Acked-by: Russell King -
Fallout from commit 91a6902958f052358899f58683d44e36228d85c2 ('sysfs:
add parameter "struct bin_attribute *" ...')Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Acked-by: Jeff Garzik
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Acked-by: Jeff Garzik
Signed-off-by: Linus Torvalds -
s390 is the only 32bit with unsigned long for size_t (usual for those
is unsigned int). Tell sparse...Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
It returns __sum16, not unsigned int
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
... so all proud owners of s390-based PDAs will have to live without that one
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
Going through the string and waiting for _pointer_ to become '\0'
is not what the authors meant...Signed-off-by: Al Viro
Acked-by: Ben Collins
Signed-off-by: Linus Torvalds -
Signed-off-by: Al Viro
Acked-by: Benjamin Herrenschmidt
Signed-off-by: Linus Torvalds -
Shows how many people are testing coda - the bug had been there for 5 years
and results of stepping on it are not subtle.Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
still looks racy (and definitely leaks)
Signed-off-by: Al Viro
Signed-off-by: Linus Torvalds -
drivers/w1/slaves/w1_ds2760.c:85: warning: initialization from incompatible pointer type
The ACPI guys changed the bin_attr APIs
(commit 91a6902958f052358899f58683d44e36228d85c2)Cc: Anton Vorontsov
Cc: Len Brown
Signed-off-by: Andrew Morton -
Per Jeff Garzik request.
Signed-off-by: Jeff Garzik
Signed-off-by: Anton Vorontsov -
Clean up pda_power interrupt handling:
Prior to this patch, the driver would pass information it needed
to the interrupt handler dev_id pointer, and then prompt forget it
ever did so, recreating that same information after a couple passes
through the timer-based state machine.This patch removes the redundant checks by passing the
pda_power_supply[] pointer through the state machine. The current
code passed 'irq' through the state machine, as an index to recreate
the pointer, when we could more simply pass around the pointer itself.This patch makes it easier to remove the 'irq' argument in the future,
in addition to cleaning up the driver today.Signed-off-by: Jeff Garzik
-
Signed-off-by: Anton Vorontsov
Acked-by: David Woodhouse
15 Jul, 2007
2 commits
-
- remove the unnecessary map_single path.
- convert to use the new accessors for the sg lists and the
parameters.Signed-off-by: FUJITA Tomonori
Cc: Santiago Leon
Signed-off-by: James Bottomley -
- remove the unnecessary map_single path.
- convert to use the new accessors for the sg lists and the
parameters.Jens Axboe did the for_each_sg cleanup.
Signed-off-by: FUJITA Tomonori
Cc: Jamie Lenehan
Signed-off-by: James Bottomley
