Jan Beulich [Thu, 15 Sep 2011 07:52:40 +0000 (08:52 +0100)]
xen/i386: follow-up to "replace order-based range checking of M2P table by linear one"
The numbers obtained from the hypervisor really can't ever lead to an
overflow here, only the original calculation going through the order
of the range could have. This avoids the (as Jeremy points outs)
somewhat ugly NULL-based calculation here.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Wed, 14 Sep 2011 09:10:00 +0000 (05:10 -0400)]
xen/irq: Alter the locking to use a mutex instead of a spinlock.
When we allocate/change the IRQ informations, we do not
need to use spinlocks. We can use a mutex (which is
what the generic IRQ code does for allocations/changes).
Fixes a slew of:
BUG: sleeping function called from invalid context at /linux/kernel/mutex.c:271
in_atomic(): 1, irqs_disabled(): 0, pid: 3216, name: xenstored
2 locks held by xenstored/3216:
#0: (&u->bind_mutex){......}, at: [<
ffffffffa02e0920>] evtchn_ioctl+0x30/0x3a0 [xen_evtchn]
#1: (irq_mapping_update_lock){......}, at: [<
ffffffff8138b274>] bind_evtchn_to_irq+0x24/0x90
Pid: 3216, comm: xenstored Not tainted
3.1.0-rc6-00021-g437a3d1 #2
Call Trace:
[<
ffffffff81088d10>] __might_sleep+0x100/0x130
[<
ffffffff81645c2f>] mutex_lock_nested+0x2f/0x50
[<
ffffffff81627529>] __irq_alloc_descs+0x49/0x200
[<
ffffffffa02e0920>] ? evtchn_ioctl+0x30/0x3a0 [xen_evtchn]
[<
ffffffff8138b214>] xen_allocate_irq_dynamic+0x34/0x70
[<
ffffffff8138b2ad>] bind_evtchn_to_irq+0x5d/0x90
[<
ffffffffa02e03c0>] ? evtchn_bind_to_user+0x60/0x60 [xen_evtchn]
[<
ffffffff8138c282>] bind_evtchn_to_irqhandler+0x32/0x80
[<
ffffffffa02e03a9>] evtchn_bind_to_user+0x49/0x60 [xen_evtchn]
[<
ffffffffa02e0a34>] evtchn_ioctl+0x144/0x3a0 [xen_evtchn]
[<
ffffffff811b4070>] ? vfsmount_lock_local_unlock+0x50/0x80
[<
ffffffff811a6a1a>] do_vfs_ioctl+0x9a/0x5e0
[<
ffffffff811b476f>] ? mntput+0x1f/0x30
[<
ffffffff81196259>] ? fput+0x199/0x240
[<
ffffffff811a7001>] sys_ioctl+0xa1/0xb0
[<
ffffffff8164ea82>] system_call_fastpath+0x16/0x1b
Reported-by: Jim Burns <jim_burn@bellsouth.net>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
David Vrabel [Tue, 13 Sep 2011 14:17:32 +0000 (10:17 -0400)]
xen/e820: if there is no dom0_mem=, don't tweak extra_pages.
The patch "xen: use maximum reservation to limit amount of usable RAM"
(
d312ae878b6aed3912e1acaaf5d0b2a9d08a4f11) breaks machines that
do not use 'dom0_mem=' argument with:
reserve RAM buffer:
000000133f2e2000 -
000000133fffffff
(XEN) mm.c:4976:d0 Global bit is set to kernel page
fffff8117e
(XEN) domain_crash_sync called from entry.S
(XEN) Domain 0 (vcpu#0) crashed on cpu#0:
...
The reason being that the last E820 entry is created using the
'extra_pages' (which is based on how many pages have been freed).
The mentioned git commit sets the initial value of 'extra_pages'
using a hypercall which returns the number of pages (if dom0_mem
has been used) or -1 otherwise. If the later we return with
MAX_DOMAIN_PAGES as basis for calculation:
return min(max_pages, MAX_DOMAIN_PAGES);
and use it:
extra_limit = xen_get_max_pages();
if (extra_limit >= max_pfn)
extra_pages = extra_limit - max_pfn;
else
extra_pages = 0;
which means we end up with extra_pages = 128GB in PFNs (
33554432)
- 8GB in PFNs (
2097152, on this specific box, can be larger or smaller),
and then we add that value to the E820 making it:
Xen:
00000000ff000000 -
0000000100000000 (reserved)
Xen:
0000000100000000 -
000000133f2e2000 (usable)
which is clearly wrong. It should look as so:
Xen:
00000000ff000000 -
0000000100000000 (reserved)
Xen:
0000000100000000 -
000000027fbda000 (usable)
Naturally this problem does not present itself if dom0_mem=max:X
is used.
CC: stable@kernel.org
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Stefano Stabellini [Tue, 6 Sep 2011 16:41:47 +0000 (17:41 +0100)]
xen: disable PV spinlocks on HVM
PV spinlocks cannot possibly work with the current code because they are
enabled after pvops patching has already been done, and because PV
spinlocks use a different data structure than native spinlocks so we
cannot switch between them dynamically. A spinlock that has been taken
once by the native code (__ticket_spin_lock) cannot be taken by
__xen_spin_lock even after it has been released.
Reported-and-Tested-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Thu, 1 Sep 2011 13:48:27 +0000 (09:48 -0400)]
xen/smp: Warn user why they keel over - nosmp or noapic and what to use instead.
We have hit a couple of customer bugs where they would like to
use those parameters to run an UP kernel - but both of those
options turn of important sources of interrupt information so
we end up not being able to boot. The correct way is to
pass in 'dom0_max_vcpus=1' on the Xen hypervisor line and
the kernel will patch itself to be a UP kernel.
Fixes bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=637308
CC: stable@kernel.org
Acked-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Igor Mammedov [Thu, 1 Sep 2011 11:46:55 +0000 (13:46 +0200)]
xen: x86_32: do not enable iterrupts when returning from exception in interrupt context
If vmalloc page_fault happens inside of interrupt handler with interrupts
disabled then on exit path from exception handler when there is no pending
interrupts, the following code (arch/x86/xen/xen-asm_32.S:112):
cmpw $0x0001, XEN_vcpu_info_pending(%eax)
sete XEN_vcpu_info_mask(%eax)
will enable interrupts even if they has been previously disabled according to
eflags from the bounce frame (arch/x86/xen/xen-asm_32.S:99)
testb $X86_EFLAGS_IF>>8, 8+1+ESP_OFFSET(%esp)
setz XEN_vcpu_info_mask(%eax)
Solution is in setting XEN_vcpu_info_mask only when it should be set
according to
cmpw $0x0001, XEN_vcpu_info_pending(%eax)
but not clearing it if there isn't any pending events.
Reproducer for bug is attached to RHBZ 707552
CC: stable@kernel.org
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
David Vrabel [Fri, 19 Aug 2011 14:57:16 +0000 (15:57 +0100)]
xen: use maximum reservation to limit amount of usable RAM
Use the domain's maximum reservation to limit the amount of extra RAM
for the memory balloon. This reduces the size of the pages tables and
the amount of reserved low memory (which defaults to about 1/32 of the
total RAM).
On a system with 8 GiB of RAM with the domain limited to 1 GiB the
kernel reports:
Before:
Memory: 627792k/4472000k available
After:
Memory: 549740k/11132224k available
A increase of about 76 MiB (~1.5% of the unused 7 GiB). The reserved
low memory is also reduced from 253 MiB to 32 MiB. The total
additional usable RAM is 329 MiB.
For dom0, this requires at patch to Xen ('x86: use 'dom0_mem' to limit
the number of pages for dom0') (c/s 23790)
CC: stable@kernel.org
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Jeremy Fitzhardinge [Thu, 11 Aug 2011 20:17:20 +0000 (13:17 -0700)]
xen/tracing: Fix tracing config option properly
Steven Rostedt says we should use CONFIG_EVENT_TRACING.
Cc:Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Stefano Stabellini [Wed, 17 Aug 2011 13:15:00 +0000 (15:15 +0200)]
xen: Do not enable PV IPIs when vector callback not present
Fix regression for HVM case on older (<4.1.1) hypervisors caused by
commit
99bbb3a84a99cd04ab16b998b20f01a72cfa9f4f
Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Date: Thu Dec 2 17:55:10 2010 +0000
xen: PV on HVM: support PV spinlocks and IPIs
This change replaced the SMP operations with event based handlers without
taking into account that this only works when the hypervisor supports
callback vectors. This causes unexplainable hangs early on boot for
HVM guests with more than one CPU.
BugLink: http://bugs.launchpad.net/bugs/791850
CC: stable@kernel.org
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-and-Reported-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Jan Beulich [Tue, 16 Aug 2011 14:07:41 +0000 (15:07 +0100)]
xen/x86: replace order-based range checking of M2P table by linear one
The order-based approach is not only less efficient (requiring a shift
and a compare, typical generated code looking like this
mov eax, [machine_to_phys_order]
mov ecx, eax
shr ebx, cl
test ebx, ebx
jnz ...
whereas a direct check requires just a compare, like in
cmp ebx, [machine_to_phys_nr]
jae ...
), but also slightly dangerous in the 32-on-64 case - the element
address calculation can wrap if the next power of two boundary is
sufficiently far away from the actual upper limit of the table, and
hence can result in user space addresses being accessed (with it being
unknown what may actually be mapped there).
Additionally, the elimination of the mistaken use of fls() here (should
have been __fls()) fixes a latent issue on x86-64 that would trigger
if the code was run on a system with memory extending beyond the 44-bit
boundary.
CC: stable@kernel.org
Signed-off-by: Jan Beulich <jbeulich@novell.com>
[v1: Based on Jeremy's feedback]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Randy Dunlap [Wed, 10 Aug 2011 18:22:42 +0000 (11:22 -0700)]
xen: xen-selfballoon.c needs more header files
Fix build errors (found when CONFIG_SYSFS is not enabled):
drivers/xen/xen-selfballoon.c:446: warning: data definition has no type or storage class
drivers/xen/xen-selfballoon.c:446: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL'
drivers/xen/xen-selfballoon.c:446: warning: parameter names (without types) in function declaration
drivers/xen/xen-selfballoon.c:485: error: expected declaration specifiers or '...' before string constant
drivers/xen/xen-selfballoon.c:485: warning: data definition has no type or storage class
drivers/xen/xen-selfballoon.c:485: warning: type defaults to 'int' in declaration of 'MODULE_LICENSE'
drivers/xen/xen-selfballoon.c:485: warning: function declaration isn't a prototype
Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Thu, 4 Aug 2011 22:42:10 +0000 (18:42 -0400)]
xen/trace: Fix compile error when CONFIG_XEN_PRIVILEGED_GUEST is not set
with CONFIG_XEN and CONFIG_FTRACE set we get this:
arch/x86/xen/trace.c:22: error: ‘__HYPERVISOR_console_io’ undeclared here (not in a function)
arch/x86/xen/trace.c:22: error: array index in initializer not of integer type
arch/x86/xen/trace.c:22: error: (near initialization for ‘xen_hypercall_names’)
arch/x86/xen/trace.c:23: error: ‘__HYPERVISOR_physdev_op_compat’ undeclared here (not in a function)
Issue was that the definitions of __HYPERVISOR were not pulled
if CONFIG_XEN_PRIVILEGED_GUEST was not set.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Igor Mammedov [Tue, 2 Aug 2011 09:45:25 +0000 (11:45 +0200)]
xen: Fix misleading WARN message at xen_release_chunk
WARN message should not complain
"Failed to release memory %lx-%lx err=%d\n"
^^^^^^^
about range when it fails to release just one page,
instead it should say what pfn is not freed.
In addition line:
printk(KERN_INFO "xen_release_chunk: looking at area pfn %lx-%lx: "
...
printk(KERN_CONT "%lu pages freed\n", len);
will be broken if WARN in between this line is fired. So fix it
by using a single printk for this.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Igor Mammedov [Tue, 2 Aug 2011 09:45:24 +0000 (11:45 +0200)]
xen: Fix printk() format in xen/setup.c
Use correct format specifier for unsigned long.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Jeremy Fitzhardinge [Wed, 3 Aug 2011 16:43:44 +0000 (09:43 -0700)]
xen/tracing: it looks like we wanted CONFIG_FTRACE
Apparently we wanted CONFIG_FTRACE rather the CONFIG_FUNCTION_TRACER.
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Tested-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Sat, 30 Jul 2011 15:21:09 +0000 (11:21 -0400)]
xen/self-balloon: Add dependency on tmem.
Without enabling CONFIG_XEN_TMEM we get this:
drivers/xen/xen-selfballoon.c:461: undefined reference to `tmem_enabled'
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Fri, 22 Jul 2011 18:01:16 +0000 (14:01 -0400)]
xen/balloon: Fix compile errors - missing header files.
With a specific enough .config file compile errors show
for missing workqueue declarations.
Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Konrad Rzeszutek Wilk [Fri, 22 Jul 2011 18:00:06 +0000 (14:00 -0400)]
xen/grant: Fix compile warning.
drivers/xen/grant-table.c:85: warning: ‘rc’ may be used uninitialized in this function
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Huang Weiyi [Sat, 23 Jul 2011 08:21:57 +0000 (16:21 +0800)]
xen/pciback: remove duplicated #include
Remove duplicated #include('s) in
drivers/xen/xen-pciback/xenbus.c
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Linus Torvalds [Sat, 30 Jul 2011 06:33:40 +0000 (23:33 -0700)]
Merge branch 'upstream/xen-tracing2' of git://git./linux/kernel/git/jeremy/xen
* 'upstream/xen-tracing2' of git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen:
xen/tracing: fix compile errors when tracing is disabled.
Linus Torvalds [Sat, 30 Jul 2011 06:32:53 +0000 (23:32 -0700)]
Merge branch 'at91/cleanup' of git://git./linux/kernel/git/arm/linux-arm-soc
* 'at91/cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
at91: add arch specific ioremap support
at91: factorize sram init
at91: move register clocks to soc generic init
at91: move clock subsystem init to soc generic init
at91: use structure to store the current soc
at91: remove AT91_DBGU offset from dbgu register macro
at91: factorize at91 interrupts init to soc
at91: introduce commom AT91_BASE_SYS
Linus Torvalds [Sat, 30 Jul 2011 06:32:02 +0000 (23:32 -0700)]
Merge branch 'next/dt' of git://git./linux/kernel/git/arm/linux-arm-soc
* 'next/dt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc: (21 commits)
arm/dt: tegra devicetree support
arm/versatile: Add device tree support
dt/irq: add irq_domain_generate_simple() helper
irq: add irq_domain translation infrastructure
dmaengine: imx-sdma: add device tree probe support
dmaengine: imx-sdma: sdma_get_firmware does not need to copy fw_name
dmaengine: imx-sdma: use platform_device_id to identify sdma version
mmc: sdhci-esdhc-imx: add device tree probe support
mmc: sdhci-pltfm: dt device does not pass parent to sdhci_alloc_host
mmc: sdhci-esdhc-imx: get rid of the uses of cpu_is_mx()
mmc: sdhci-esdhc-imx: do not reference platform data after probe
mmc: sdhci-esdhc-imx: extend card_detect and write_protect support for mx5
net/fec: add device tree probe support
net: ibm_newemac: convert it to use of_get_phy_mode
dt/net: add helper function of_get_phy_mode
net/fec: gasket needs to be enabled for some i.mx
serial/imx: add device tree probe support
serial/imx: get rid of the uses of cpu_is_mx1()
arm/dt: Add dtb make rule
arm/dt: Add skeleton dtsi file
...
Linus Torvalds [Sat, 30 Jul 2011 06:31:22 +0000 (23:31 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/arm/linux-arm-soc
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-arm-soc:
ARM: zynq: remove incorrectly deleted file
ARM: tegra: only select MACH_HAS_SND_SOC_TEGRA_WM8903 if SND_SOC
Linus Torvalds [Sat, 30 Jul 2011 06:28:47 +0000 (23:28 -0700)]
Merge git://git./linux/kernel/git/wim/linux-watchdog
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-watchdog: (25 commits)
watchdog: WatchDog Timer Driver Core - Add minimum and max timeout
watchdog: WatchDog Timer Driver Core - Add ioctl call
watchdog: WatchDog Timer Driver Core - Add nowayout feature
watchdog: WatchDog Timer Driver Core - Add Magic Close feature
watchdog: WatchDog Timer Driver Core - Add WDIOC_SETTIMEOUT and WDIOC_GETTIMEOUT ioctl
watchdog: WatchDog Timer Driver Core - Add WDIOC_SETOPTIONS ioctl
watchdog: WatchDog Timer Driver Core - Add WDIOC_KEEPALIVE ioctl
watchdog: WatchDog Timer Driver Core - Add basic ioctl functionality
watchdog: WatchDog Timer Driver Core - Add basic framework
watchdog: hpwdt: add next gen HP servers
watchdog: it8712f_wdt.c: improve includes
watchdog: at91sam9/wdt: move register header to drivers
watchdog: Add Xilinx watchdog timer driver
watchdog: remove empty pm-functions
watchdog: sp805: Flush posted writes in enable/disable.
watchdog: sp805: Don't write 0 to the load value register.
watchdog: imx2_wdt: add device tree probe support
watchdog: s3c2410: Add support for device tree based probe
watchdog: mpcore_wdt: Add suspend/resume support.
watchdog: mtx1-wdt: use dev_{err,info} instead of printk()
...
Linus Torvalds [Sat, 30 Jul 2011 06:21:50 +0000 (23:21 -0700)]
ext2: remove duplicate 'ext2_get_acl()' define
When commit
4e34e719e457 ("fs: take the ACL checks to common code")
changed the xyz_check_acl() functions into the more natural
xyz_get_acl() interface, we grew two copies of the
#define ext2_get_acl NULL
define for the non-acl case.
Remove the extra one.
Reported-by: Marco Stornelli <marco.stornelli@gmail.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Arnd Bergmann [Thu, 28 Jul 2011 14:33:40 +0000 (14:33 +0000)]
ARM: zynq: remove incorrectly deleted file
My previous commit left the file empty and present in the
Makefile, which is a bit dirty and caused problems with
'make distclean', as pointed out by David Howells.
This hopefully cleans it up the right way.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: John Linn <john.linn@xilinx.com>
Arnd Bergmann [Thu, 28 Jul 2011 15:25:46 +0000 (15:25 +0000)]
Merge branch 'imx/dt' into next/dt
Jean-Christophe PLAGNIOL-VILLARD [Sat, 7 May 2011 03:16:00 +0000 (11:16 +0800)]
at91: add arch specific ioremap support
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Jean-Christophe PLAGNIOL-VILLARD [Mon, 9 May 2011 19:20:09 +0000 (03:20 +0800)]
at91: factorize sram init
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Jean-Christophe PLAGNIOL-VILLARD [Sun, 24 Apr 2011 10:15:34 +0000 (18:15 +0800)]
at91: move register clocks to soc generic init
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Jean-Christophe PLAGNIOL-VILLARD [Sun, 24 Apr 2011 10:20:28 +0000 (18:20 +0800)]
at91: move clock subsystem init to soc generic init
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Jean-Christophe PLAGNIOL-VILLARD [Sat, 23 Apr 2011 14:12:57 +0000 (22:12 +0800)]
at91: use structure to store the current soc
instead of reading the registers everytime
the current implementation respect the following constrain:
- allow 1 to n soc to be enabled
- allow to have a virtual cpu type and subtype
- always detect the cpu type and subtype and report it
- detect if the soc support is enabled
- prepare for sysfs export support
- drop soc specific code via compiler when the soc not enabled
(via cpu_is_xxx)
Today if we read the exid we will have the same value for 9g35 and 9m11
and we will need to check the cidr too
with the new implementation we just need to check the soc subtype
this will also allow to have specific virtual subtype for rm9200 which the
board will have to specify via at91rm9200_set_type(int) as we have no way to
detect it.
this implementation is inspired by the SH cpu detection support
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Jean-Christophe PLAGNIOL-VILLARD [Mon, 2 May 2011 17:11:25 +0000 (01:11 +0800)]
at91: remove AT91_DBGU offset from dbgu register macro
to make the soc base specified at runtime instead of compiled time
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Jean-Christophe PLAGNIOL-VILLARD [Sat, 23 Apr 2011 07:28:34 +0000 (15:28 +0800)]
at91: factorize at91 interrupts init to soc
they are the same except the default priority
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Jean-Christophe PLAGNIOL-VILLARD [Sat, 23 Apr 2011 07:28:34 +0000 (15:28 +0800)]
at91: introduce commom AT91_BASE_SYS
On all at91 except rm9200 and x40 have the System Controller starts
at address 0xffffc000 and has a size of 16KiB.
On rm9200 it's start at 0xfffe4000 of 111KiB with non reserved data starting
at 0xfffff000
This patch removes the individual definitions of AT91_BASE_SYS and
replaces them with a common version at base 0xfffffc000 and size 16KiB
and map the same memory space
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: Patrice Vilchez <patrice.vilchez@atmel.com>
Linus Torvalds [Thu, 28 Jul 2011 12:59:19 +0000 (05:59 -0700)]
Merge git://git./linux/kernel/git/davem/sparc
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
n2_crypto: Attach on Niagara-T3.
n2rng: Attach on Niagara-T3.
sparc: Detect and handle UltraSPARC-T3 cpu types.
sparc: Don't do expensive hypervisor PCR write unless necessary.
sparc: Add T3 sun4v cpu type and hypervisor group defines.
sparc: Don't leave sparc_pmu_type NULL on sun4v.
Linus Torvalds [Thu, 28 Jul 2011 12:58:19 +0000 (05:58 -0700)]
Merge git://git./linux/kernel/git/davem/net
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (32 commits)
tg3: Remove 5719 jumbo frames and TSO blocks
tg3: Break larger frags into 4k chunks for 5719
tg3: Add tx BD budgeting code
tg3: Consolidate code that calls tg3_tx_set_bd()
tg3: Add partial fragment unmapping code
tg3: Generalize tg3_skb_error_unmap()
tg3: Remove short DMA check for 1st fragment
tg3: Simplify tx bd assignments
tg3: Reintroduce tg3_tx_ring_info
ASIX: Use only 11 bits of header for data size
ASIX: Simplify condition in rx_fixup()
Fix cdc-phonet build
bonding: reduce noise during init
bonding: fix string comparison errors
net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared
net: add IFF_SKB_TX_SHARED flag to priv_flags
net: sock_sendmsg_nosec() is static
forcedeth: fix vlans
gianfar: fix bug caused by
87c288c6e9aa31720b72e2bc2d665e24e1653c3e
gro: Only reset frag0 when skb can be pulled
...
Linus Torvalds [Thu, 28 Jul 2011 12:50:27 +0000 (05:50 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md: (75 commits)
md/raid10: handle further errors during fix_read_error better.
md/raid10: Handle read errors during recovery better.
md/raid10: simplify read error handling during recovery.
md/raid10: record bad blocks due to write errors during resync/recovery.
md/raid10: attempt to fix read errors during resync/check
md/raid10: Handle write errors by updating badblock log.
md/raid10: clear bad-block record when write succeeds.
md/raid10: avoid writing to known bad blocks on known bad drives.
md/raid10 record bad blocks as needed during recovery.
md/raid10: avoid reading known bad blocks during resync/recovery.
md/raid10 - avoid reading from known bad blocks - part 3
md/raid10: avoid reading from known bad blocks - part 2
md/raid10: avoid reading from known bad blocks - part 1
md/raid10: Split handle_read_error out from raid10d.
md/raid10: simplify/reindent some loops.
md/raid5: Clear bad blocks on successful write.
md/raid5. Don't write to known bad block on doubtful devices.
md/raid5: write errors should be recorded as bad blocks if possible.
md/raid5: use bad-block log to improve handling of uncorrectable read errors.
md/raid5: avoid reading from known bad blocks.
...
Linus Torvalds [Thu, 28 Jul 2011 12:49:31 +0000 (05:49 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
sound: oss: rename local change_bits to avoid powerpc bitsops.h definition
ALSA: hda - Fix duplicated DAC assignments for Realtek
ALSA: asihpi - off by one in asihpi_hpi_ioctl()
ALSA: hda - Fix Oops with Realtek quirks with NULL adc_nids
ALSA: asihpi - bug fix pa use before init.
ALSA: hda - Add support for vref-out based mute LED control on IDT codecs
David S. Miller [Thu, 28 Jul 2011 08:30:07 +0000 (01:30 -0700)]
n2_crypto: Attach on Niagara-T3.
A small modification was necessary since in the machine description
for 'n2cp' and 'ncp' nodes, there no longer is an 'intr' property.
That's OK because this property was always nothing more than an
array of integers '1' ... 'nr_inos + 1' so we can just compute it
in-place.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 06:33:03 +0000 (23:33 -0700)]
n2rng: Attach on Niagara-T3.
And stop referring to Victoria Falls, as the attribute we're
talking about is whether the rng is multi-unit capable which
applies to several chip variants now.
Signed-off-by: David S. Miller <davem@davemloft.net>
Wim Van Sebroeck [Fri, 22 Jul 2011 19:00:16 +0000 (19:00 +0000)]
watchdog: WatchDog Timer Driver Core - Add minimum and max timeout
Add min_timeout (minimum timeout) and max_timeout
values so that the framework can check if the new
timeout value is between the minimum and maximum
timeout values. If both values are 0, then the
framework will leave the check for the watchdog
device driver itself.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:59:49 +0000 (18:59 +0000)]
watchdog: WatchDog Timer Driver Core - Add ioctl call
Add support for extra ioctl calls by adding a
ioctl watchdog operation. This operation will be
called before we do our own handling of ioctl
commands. This way we can override the internal
ioctl command handling and we can also add
extra ioctl commands. The ioctl watchdog operation
should return the appropriate error codes or
-ENOIOCTLCMD if the ioctl command should be handled
through the internal ioctl handling of the framework.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:59:17 +0000 (18:59 +0000)]
watchdog: WatchDog Timer Driver Core - Add nowayout feature
Add support for the nowayout feature to the
WatchDog Timer Driver Core framework.
This feature prevents the watchdog timer from being
stopped.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:58:54 +0000 (18:58 +0000)]
watchdog: WatchDog Timer Driver Core - Add Magic Close feature
Add support for the Magic Close feature to the
WatchDog Timer Driver Core framework.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:58:21 +0000 (18:58 +0000)]
watchdog: WatchDog Timer Driver Core - Add WDIOC_SETTIMEOUT and WDIOC_GETTIMEOUT ioctl
This part add's the WDIOC_SETTIMEOUT and WDIOC_GETTIMEOUT ioctl
functionality to the WatchDog Timer Driver Core framework.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:57:55 +0000 (18:57 +0000)]
watchdog: WatchDog Timer Driver Core - Add WDIOC_SETOPTIONS ioctl
This part add's the WDIOC_SETOPTIONS ioctl functionality
to the WatchDog Timer Driver Core framework.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:57:23 +0000 (18:57 +0000)]
watchdog: WatchDog Timer Driver Core - Add WDIOC_KEEPALIVE ioctl
This part add's the WDIOC_KEEPALIVE ioctl functionality to the
WatchDog Timer Driver Core framework. Please note that the
WDIOF_KEEPALIVEPING bit has to be set in the watchdog_info
options field.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:56:38 +0000 (18:56 +0000)]
watchdog: WatchDog Timer Driver Core - Add basic ioctl functionality
This part add's the basic ioctl functionality to the
WatchDog Timer Driver Core framework. The supported
ioctl call's are:
WDIOC_GETSUPPORT
WDIOC_GETSTATUS
WDIOC_GETBOOTSTATUS
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Wim Van Sebroeck [Fri, 22 Jul 2011 18:55:18 +0000 (18:55 +0000)]
watchdog: WatchDog Timer Driver Core - Add basic framework
The WatchDog Timer Driver Core is a framework
that contains the common code for all watchdog-driver's.
It also introduces a watchdog device structure and the
operations that go with it.
This is the introduction of this framework. This part
supports the minimal watchdog userspace API (or with
other words: the functionality to use /dev/watchdog's
open, release and write functionality as defined in
the simplest watchdog API). Extra functionality will
follow in the next set of patches.
Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Thomas Mingarelli [Tue, 26 Jul 2011 13:05:53 +0000 (14:05 +0100)]
watchdog: hpwdt: add next gen HP servers
This patch is required to enable hpwdt to work on next generation HP servers
with iLO.
Signed-off-by: Thomas Mingarelli <thomas.mingarelli@hp.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Grant Likely [Tue, 19 Jul 2011 23:26:54 +0000 (17:26 -0600)]
arm/dt: tegra devicetree support
Everything required to populate NVIDIA Tegra devices from the device
tree. This patch adds a new DT_MACHINE_DESC() which matches against
a tegra20 device tree. So far it only registers the on-chip devices,
but it will be refined in follow on patches to configure clocks and
pin IO from the device tree also.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Grant Likely [Tue, 26 Jul 2011 09:19:06 +0000 (03:19 -0600)]
arm/versatile: Add device tree support
For testing the dt work, define a dt-enabled versatile platform.
This patch adds a new versatile platform for when using the device
tree. Add platform and amba devices are discovered and registered by
parsing the device tree. Clocks and initial io mappings are still
configured statically.
This patch still depends on some static platform_data for a few devices
which is passed via the auxdata structure to of_platform_populate(),
but it is a viable starting point until the drivers can get all
configuration data out of the device tree.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Grant Likely [Tue, 26 Jul 2011 09:19:06 +0000 (03:19 -0600)]
dt/irq: add irq_domain_generate_simple() helper
irq_domain_generate_simple() is an easy way to generate an irq translation
domain for simple irq controllers. It assumes a flat 1:1 mapping from
hardware irq number to an offset of the first linux irq number assigned
to the controller
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Grant Likely [Tue, 26 Jul 2011 09:19:06 +0000 (03:19 -0600)]
irq: add irq_domain translation infrastructure
This patch adds irq_domain infrastructure for translating from
hardware irq numbers to linux irqs. This is particularly important
for architectures adding device tree support because the current
implementation (excluding PowerPC and SPARC) cannot handle
translation for more than a single interrupt controller. irq_domain
supports device tree translation for any number of interrupt
controllers.
This patch converts x86, Microblaze, ARM and MIPS to use irq_domain
for device tree irq translation. x86 is untested beyond compiling it,
irq_domain is enabled for MIPS and Microblaze, but the old behaviour is
preserved until the core code is modified to actually register an
irq_domain yet. On ARM it works and is required for much of the new
ARM device tree board support.
PowerPC has /not/ been converted to use this new infrastructure. It
is still missing some features before it can replace the virq
infrastructure already in powerpc (see documentation on
irq_domain_map/unmap for details). Followup patches will add the
missing pieces and migrate PowerPC to use irq_domain.
SPARC has its own method of managing interrupts from the device tree
and is unaffected by this change.
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Matt Carlson [Wed, 27 Jul 2011 14:20:54 +0000 (14:20 +0000)]
tg3: Remove 5719 jumbo frames and TSO blocks
The A0 revision of this chip is the only device that requires these
features to be disabled.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:53 +0000 (14:20 +0000)]
tg3: Break larger frags into 4k chunks for 5719
The 5719 has bug where RDMAs larger than 4k can cause problems. This
patch works around the problem by dividing larger DMA requests into
something the hardware can handle.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:52 +0000 (14:20 +0000)]
tg3: Add tx BD budgeting code
As the driver breaks large skb fragments into smaller submissions to the
hardware, there is a new danger that BDs might get exhausted before all
fragments have been mapped. This patch adds code to make sure tx BDs
aren't oversubscribed and flag the condition if it happens.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:51 +0000 (14:20 +0000)]
tg3: Consolidate code that calls tg3_tx_set_bd()
This patch consolidates all code that populates tx BDs into a single
routine. Setting tx BDs needs to be more carefully controlled to see if
workarounds need to be applied.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:50 +0000 (14:20 +0000)]
tg3: Add partial fragment unmapping code
The following patches are going to break skb fragments into smaller
sizes. This patch attempts to make the change easier to digest by only
addressing the skb teardown portion.
The patch modifies the driver to skip over any BDs that have a flag set
that indicates the BD isn't the beginning of an skb fragment. Such BDs
were a result of segmentation and do not need a pci_unmap_page() call.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:49 +0000 (14:20 +0000)]
tg3: Generalize tg3_skb_error_unmap()
In the following patches, unmapping skb fragments will get just as
complicated as mapping them. This patch generalizes
tg3_skb_error_unmap() and makes it the one-stop-shop for skb unmapping.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:48 +0000 (14:20 +0000)]
tg3: Remove short DMA check for 1st fragment
The first fragment of an skb should always be greater than 8 bytes.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:47 +0000 (14:20 +0000)]
tg3: Simplify tx bd assignments
In the following patches, the process the driver will use to assign skb
fragments to transmit BDs will get more complicated. To prepare for
that new code, this patch seeks to simplify how transmit BDs are
populated. It does this by separating the code that assigns the BD
members from the logic that controls how the fields are set.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matt Carlson [Wed, 27 Jul 2011 14:20:46 +0000 (14:20 +0000)]
tg3: Reintroduce tg3_tx_ring_info
The following patches will require the use of an additional flag in the
ring_info structure. The use of this flag is tx path specific, so this
patch defines a specialized ring_info structure.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Vasut [Tue, 26 Jul 2011 16:44:47 +0000 (16:44 +0000)]
ASIX: Use only 11 bits of header for data size
The AX88772B uses only 11 bits of the header for the actual size. The other bits
are used for something else. This causes dmesg full of messages:
asix_rx_fixup() Bad Header Length
This patch trims the check to only 11 bits. I believe on older chips, the
remaining 5 top bits are unused.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Vasut [Tue, 26 Jul 2011 16:44:46 +0000 (16:44 +0000)]
ASIX: Simplify condition in rx_fixup()
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chris Clayton [Tue, 26 Jul 2011 12:20:22 +0000 (12:20 +0000)]
Fix cdc-phonet build
Try to send to correct address this time!
---------- Forwarded Message ----------
Subject: [PATCH] Fix cdc-phonet build
Date: Saturday 23 Jul 2011
From: Chris Clayton <chris2553@googlemail.com>
To: linux-net@vger.kernel.org
cdc-phonet does not presently build on linux-3.0 because there is no entry for it in
drivers/net/Makefile. This patch adds that entry.
Signed-off-by: Chris Clayton <chris2553@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Gospodarek [Wed, 27 Jul 2011 10:09:26 +0000 (10:09 +0000)]
bonding: reduce noise during init
On Tue, Jul 26, 2011 at 05:40:27PM -0700, Joe Perches wrote:
> On Tue, 2011-07-26 at 17:37 -0700, Jay Vosburgh wrote:
> > Joe Perches <joe@perches.com> wrote:
> > >I'd prefer you don't separate the format string
> > >into multiple pieces.
> > Why not? To me, it looks easier to read split into sections
> > that don't wrap lines.
>
> Harder to grep for a dmesg and the
> defect rate of these split formats is
> typically higher than single strings
> because of bad spacing between string
> segments.
>
I noticed that you took some time back in late 2009 to 'consolidate' the
split format-strings present in the bonding driver at the time and I've
decided I'm fine to leave them the way they are. The main point of my
patch was to change the output and I would like to get that included.
Here is my updated patch...
Subject: [PATCH net-next-2.6 v2] bonding: reduce noise during init
Many are using sysfs to configure bonding rather than module options, so
there is no need for bonding to throw this warning in normal cases.
Keep the message around when debugging is enabled as it might be useful
for someone desperate enough to enable debugging, but eliminate it
otherwise.
Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andy Gospodarek [Tue, 26 Jul 2011 11:12:27 +0000 (11:12 +0000)]
bonding: fix string comparison errors
When a bond contains a device where one name is the subset of another
(eth1 and eth10, for example), one cannot properly set the primary
device or the currently active device.
This was reported and based on work by Takuma Umeya. I also verified
the problem and tested that this fix resolves it.
V2: A few did not like the the current code or my changes, so I
refactored bonding_store_primary and bonding_store_active_slave to be a
bit cleaner, dropped the use of strnicmp since we did not really need
the comparison to be case insensitive, and formatted the input string
from sysfs so a comparison to IFNAMSIZ could be used.
I also discovered an error in bonding_store_active_slave that would
modify bond->primary_slave rather than bond->curr_active_slave before
forcing the bonding driver to choose a new active slave.
V3: Actually sending the proper patch....
Signed-off-by: Andy Gospodarek <andy@greyhouse.net>
Reported-by: Takuma Umeya <tumeya@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Tue, 26 Jul 2011 06:05:38 +0000 (06:05 +0000)]
net: Audit drivers to identify those needing IFF_TX_SKB_SHARING cleared
After the last patch, We are left in a state in which only drivers calling
ether_setup have IFF_TX_SKB_SHARING set (we assume that drivers touching real
hardware call ether_setup for their net_devices and don't hold any state in
their skbs. There are a handful of drivers that violate this assumption of
course, and need to be fixed up. This patch identifies those drivers, and marks
them as not being able to support the safe transmission of skbs by clearning the
IFF_TX_SKB_SHARING flag in priv_flags
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
CC: Karsten Keil <isdn@linux-pingi.de>
CC: "David S. Miller" <davem@davemloft.net>
CC: Jay Vosburgh <fubar@us.ibm.com>
CC: Andy Gospodarek <andy@greyhouse.net>
CC: Patrick McHardy <kaber@trash.net>
CC: Krzysztof Halasa <khc@pm.waw.pl>
CC: "John W. Linville" <linville@tuxdriver.com>
CC: Greg Kroah-Hartman <gregkh@suse.de>
CC: Marcel Holtmann <marcel@holtmann.org>
CC: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neil Horman [Tue, 26 Jul 2011 06:05:37 +0000 (06:05 +0000)]
net: add IFF_SKB_TX_SHARED flag to priv_flags
Pktgen attempts to transmit shared skbs to net devices, which can't be used by
some drivers as they keep state information in skbs. This patch adds a flag
marking drivers as being able to handle shared skbs in their tx path. Drivers
are defaulted to being unable to do so, but calling ether_setup enables this
flag, as 90% of the drivers calling ether_setup touch real hardware and can
handle shared skbs. A subsequent patch will audit drivers to ensure that the
flag is set properly
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Jiri Pirko <jpirko@redhat.com>
CC: Robert Olsson <robert.olsson@its.uu.se>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Alexey Dobriyan <adobriyan@gmail.com>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Tue, 26 Jul 2011 02:39:41 +0000 (02:39 +0000)]
net: sock_sendmsg_nosec() is static
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Anton Blanchard <anton@samba.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jiri Pirko [Tue, 26 Jul 2011 10:19:28 +0000 (10:19 +0000)]
forcedeth: fix vlans
For some reason, when rxaccel is disabled, NV_RX3_VLAN_TAG_PRESENT is
still set and some pseudorandom vids appear. So check for
NETIF_F_HW_VLAN_RX as well. Also set correctly hw_features and set vlan
mode on probe.
Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sebastian Pöhn [Tue, 26 Jul 2011 00:03:13 +0000 (00:03 +0000)]
gianfar: fix bug caused by
87c288c6e9aa31720b72e2bc2d665e24e1653c3e
commit
87c288c6e9aa31720b72e2bc2d665e24e1653c3e "gianfar: do vlan cleanup" has two issues:
# permutation of rx and tx flags
# enabling vlan tag insertion by default (this leads to unusable connections on some configurations)
If VLAN insertion is requested (via ethtool) it will be set at an other point ...
Signed-off-by: Sebastian Poehn <sebastian.poehn@belden.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 05:18:47 +0000 (22:18 -0700)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless-next-2.6
David S. Miller [Thu, 28 Jul 2011 04:06:16 +0000 (21:06 -0700)]
sparc: Detect and handle UltraSPARC-T3 cpu types.
The cpu compatible string we look for is "SPARC-T3".
As far as memset/memcpy optimizations go, we treat this chip the same
as Niagara-T2/T2+. Use cache initializing stores for memset, and use
perfetch, FPU block loads, cache initializing stores, and block stores
for copies.
We use the Niagara-T2 perf support, since T3 is a close relative in
this regard. Later we'll add support for the new events T3 can
report, plus enable T3's new "sample" mode.
For now I haven't added any new ELF hwcap flags. We probably need
to add a couple, for example:
T2 and T3 both support the population count instruction in hardware.
T3 supports VIS3 instructions, including support (finally) for
partitioned shift. One can also now move directly between float
and integer registers.
T3 supports instructions meant to help with Galois Field and other HPC
calculations, such as XOR multiply. Also there are "OP and negate"
instructions, for example "fnmul" which is multiply-and-negate.
T3 recognizes the transactional memory opcodes, however since
transactional memory isn't supported: 1) 'commit' behaves as a NOP and
2) 'chkpt' always branches 3) 'rdcps' returns all zeros and 4) 'wrcps'
behaves as a NOP.
So we'll need about 3 new elf capability flags in the end to represent
all of these things.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 03:46:25 +0000 (20:46 -0700)]
sparc: Don't do expensive hypervisor PCR write unless necessary.
The hypervisor call is only necessary if hypervisor events are
being requested.
So if we're not tracking hypervisor events, simply do a direct
register write.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 03:42:51 +0000 (20:42 -0700)]
sparc: Add T3 sun4v cpu type and hypervisor group defines.
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 28 Jul 2011 03:25:57 +0000 (20:25 -0700)]
sparc: Don't leave sparc_pmu_type NULL on sun4v.
Otherwise we'll crash in the sparc perf init code.
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 28 Jul 2011 02:26:38 +0000 (19:26 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6: (54 commits)
tpm_nsc: Fix bug when loading multiple TPM drivers
tpm: Move tpm_tis_reenable_interrupts out of CONFIG_PNP block
tpm: Fix compilation warning when CONFIG_PNP is not defined
TOMOYO: Update kernel-doc.
tpm: Fix a typo
tpm_tis: Probing function for Intel iTPM bug
tpm_tis: Fix the probing for interrupts
tpm_tis: Delay ACPI S3 suspend while the TPM is busy
tpm_tis: Re-enable interrupts upon (S3) resume
tpm: Fix display of data in pubek sysfs entry
tpm_tis: Add timeouts sysfs entry
tpm: Adjust interface timeouts if they are too small
tpm: Use interface timeouts returned from the TPM
tpm_tis: Introduce durations sysfs entry
tpm: Adjust the durations if they are too small
tpm: Use durations returned from TPM
TOMOYO: Enable conditional ACL.
TOMOYO: Allow using argv[]/envp[] of execve() as conditions.
TOMOYO: Allow using executable's realpath and symlink's target as conditions.
TOMOYO: Allow using owner/group etc. of file objects as conditions.
...
Fix up trivial conflict in security/tomoyo/realpath.c
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: handle further errors during fix_read_error better.
If we find more read/write errors we should record a bad block before
failing the device.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: Handle read errors during recovery better.
Currently when we get a read error during recovery, we simply abort
the recovery.
Instead, repeat the read in page-sized blocks.
On successful reads, write to the target.
On read errors, record a bad block on the destination,
and only if that fails do we abort the recovery.
As we now retry reads we need to know where we read from. This was in
bi_sector but that can be changed during a read attempt.
So store the correct from_addr and to_addr in the r10_bio for later
access.
Signed-off-by: NeilBrown<neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: simplify read error handling during recovery.
If a read error is detected during recovery the code currently
fails the read device.
This isn't really necessary. recovery_request_write will signal
a write error to end_sync_write and it will record a write
error on the destination device which will record a bad block
there or kick it from the array.
So just remove this call to do md_error.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: record bad blocks due to write errors during resync/recovery.
If we get a write error during resync/recovery don't fail the device
but instead record a bad block. If that fails we can then fail the
device.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:25 +0000 (11:39 +1000)]
md/raid10: attempt to fix read errors during resync/check
We already attempt to fix read errors found during normal IO
and a 'repair' process.
It is best to try to repair them at any time they are found,
so move a test so that during sync and check a read error will
be corrected by over-writing with good data.
If both (all) devices have known bad blocks in the sync section we
won't try to fix even though the bad blocks might not overlap. That
should be considered later.
Also if we hit a read error during recovery we don't try to fix it.
It would only be possible to fix if there were at least three copies
of data, which is not very common with RAID10. But it should still
be considered later.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: Handle write errors by updating badblock log.
When we get a write error (in the data area, not in metadata),
update the badblock log rather than failing the whole device.
As the write may well be many blocks, we trying writing each
block individually and only log the ones which fail.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: clear bad-block record when write succeeds.
If we succeed in writing to a block that was recorded as
being bad, we clear the bad-block record.
This requires some delayed handling as the bad-block-list update has
to happen in process-context.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: avoid writing to known bad blocks on known bad drives.
Writing to known bad blocks on drives that have seen a write error
is asking for trouble. So try to avoid these blocks.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10 record bad blocks as needed during recovery.
When recovering one or more devices, if all the good devices have
bad blocks we should record a bad block on the device being rebuilt.
If this fails, we need to abort the recovery.
To ensure we don't think that we aborted later than we actually did,
we need to move the check for MD_RECOVERY_INTR earlier in md_do_sync,
in particular before mddev->curr_resync is updated.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10: avoid reading known bad blocks during resync/recovery.
During resync/recovery limit the size of the request to avoid
reading into a bad block that does not start at-or-before the current
read address.
Similarly if there is a bad block at this address, don't allow the
current request to extend beyond the end of that bad block.
Now that we don't ever read from known bad blocks, it is safe to allow
devices with those blocks into the array.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:24 +0000 (11:39 +1000)]
md/raid10 - avoid reading from known bad blocks - part 3
When attempting to repair a read error, don't read from
devices with a known bad block.
As we are only reading PAGE_SIZE blocks, we don't try to
narrow down to smaller regions in the hope that only part of this
page is bad - it isn't worth the effort.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: avoid reading from known bad blocks - part 2
When redirecting a read error to a different device, we must
again avoid bad blocks and possibly split the request.
Spin_lock typo fixed thanks to Dan Carpenter <error27@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: avoid reading from known bad blocks - part 1
This patch just covers the basic read path:
1/ read_balance needs to check for badblocks, and return not only
the chosen slot, but also how many good blocks are available
there.
2/ read submission must be ready to issue multiple reads to
different devices as different bad blocks on different devices
could mean that a single large read cannot be served by any one
device, but can still be served by the array.
This requires keeping count of the number of outstanding requests
per bio. This count is stored in 'bi_phys_segments'
On read error we currently just fail the request if another target
cannot handle the whole request. Next patch refines that a bit.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: Split handle_read_error out from raid10d.
raid10d() is too big and is about to get bigger, so split
handle_read_error() out as a separate function.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid10: simplify/reindent some loops.
When a loop ends with a large if, it can be neater to change the
if to invert the condition and just 'continue'.
Then the body of the if can be indented to a lower level.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:23 +0000 (11:39 +1000)]
md/raid5: Clear bad blocks on successful write.
On a successful write to a known bad block, flag the sh
so that raid5d can remove the known bad block from the list.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5. Don't write to known bad block on doubtful devices.
If a device has seen write errors, don't write to any known
bad blocks on that device.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5: write errors should be recorded as bad blocks if possible.
When a write error is detected, don't mark the device as failed
immediately but rather record the fact for handle_stripe to deal with.
Handle_stripe then attempts to record a bad block. Only if that fails
does the device get marked as faulty.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5: use bad-block log to improve handling of uncorrectable read errors.
If we get an uncorrectable read error - record a bad block rather than
failing the device.
And if these errors (which may be due to known bad blocks) cause
recovery to be impossible, record a bad block on the recovering
devices, or abort the recovery.
As we might abort a recovery without failing a device we need to teach
RAID5 about recovery_disabled handling.
Signed-off-by: NeilBrown <neilb@suse.de>
NeilBrown [Thu, 28 Jul 2011 01:39:22 +0000 (11:39 +1000)]
md/raid5: avoid reading from known bad blocks.
There are two times that we might read in raid5:
1/ when a read request fits within a chunk on a single
working device.
In this case, if there is any bad block in the range of
the read, we simply fail the cache-bypass read and
perform the read though the stripe cache.
2/ when reading into the stripe cache. In this case we
mark as failed any device which has a bad block in that
strip (1 page wide).
Note that we will both avoid reading and avoid writing.
This is correct (as we will never read from the block, there
is no point writing), but not optimal (as writing could 'fix'
the error) - that will be addressed later.
If we have not seen any write errors on the device yet, we treat a bad
block like a recent read error. This will encourage an attempt to fix
the read error which will either generate a write error, or will
ensure good data is stored there. We don't yet forget the bad block
in that case. That comes later.
Now that we honour bad blocks when reading we can allow devices with
bad blocks into the array.
Signed-off-by: NeilBrown <neilb@suse.de>