| Commit message (Collapse) | Author | Age |
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PAL_CACHE_READ and PAL_CACHE_WRITE need to be called in physical
mode with stacked registers.
Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
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When entering the kernel due to an MCA or INIT, ar.fpsr (ar40)
was not getting set to the kernel default value (remaining
at the user value). The effect depends on the user setting
of ar.fpsr. In the test case, the effect was addresses
printing with strange hex values.
Setting ar.fpsr in ia64_set_kernel_registers sets it for both
the MCA and INIT paths. The user value of ar.fpsr is correctly
saved (in ia64_state_save) and restored (in ia64_state_restore).
Below is an example of output with very strange hex values.
Anyone know the value of hex 'g'? :-)
Processes interrupted by INIT - 0 (cpu 14 task 0xdfffg55g7a4c6gA)
Signed-off-by: Russ Anderson (rja@sgi.com)
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Printing message to console from MCA/INIT handler is useful,
however doing oops_in_progress = 1 in them exactly makes
something in kernel wrong. Especially it sounds ugly if
system goes wrong after returning from recoverable MCA.
This patch adds ia64_mca_printk() function that collects
messages into temporary-not-so-large message buffer during
in MCA/INIT environment and print them out later, after
returning to normal context or when handlers determine to
down the system.
Also this print function is exported for use in extensional
MCA handler. It would be useful to describe detail about
recovery.
NOTE:
I don't think it is sane thing if temporary message buffer
is enlarged enough to hold whole stack dumps from INIT, so
buffering is disabled during stack dump from INIT-monarch
(= default_monarch_init_process). please fix it in future.
Signed-off-by: Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>
Acked-by: Russ Anderson <rja@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Cut the number of lines of memory info output per node from five
to one line.
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Use the default sysrq printk level for printing show_mem() output both
for disconfig and contig versions. This is consistent with the printk
level used on other architectures (well ia32 at least).
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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MCA dispatch code take physical address of GP passed from SAL, then call
DATA_PA_TO_VA twice on GP before call into C code. The first time is
in ia64_set_kernel_register, the second time is in VIRTUAL_MODE_ENTER.
The gp is changed to a virtual address in region 7 because DATA_PA_TO_VA
is implemented by dep instruction.
However when notify blocks were called from MCA handler code, because
notify blocks are supported by callback function pointers, gp value
value was switched to region 5 again.
The patch set gp register to kernel gp of region 5 at entry of MCA
dispatch.
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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This reverts commit 2636255488484e04d6d54303d2b0ec30f7ef7e02.
Jakub Jelinek provided the missing futex_atomic_cmpxchg_inatomic()
function, so now it should be safe to re-enable these syscalls.
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Implement futex_atomic_op_inuser() and futex_atomic_cmpxchg_inatomic()
on IA64 in order to fully support all futex functionality.
Signed-off-by: Jakub Jelinek <jakub@redhat.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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The GFP_DMA option usually does nothing on SN2 since all of memory is in thei
DMA zone and the BTE has always been capable of addressing all of memory.
So there is no need to get memory from a restricted range of memory (which
is what GFP_DMA is for).
Remove useless __GFP_DMA option.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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This patch renders thread_struct->pmcs[] and thread_struct->pmds[]
OBSOLETE. The actual table is moved to pfm_context structure which
saves space in thread_struct (in turn saving space in task_struct
which frees up more space for kernel stacks).
Signed-off-by: Stephane Eranian <eranian@hpl.hp.com>
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Add is_multithreading_enabled() to check whether multi-threading
is enabled independently of which cpu is currently online
Signed-off-by: stephane eranian <eranian@hpl.hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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If the user-specified kprobe handler causes the page fault when accessing
user space address, fixup this fault since do_page_fault() should not
continue as the kprobe handler are run with preemption disabled.
Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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On IA64 instruction opcode must be 16 bytes alignment, in kprobe structure
there is one element to save original instruction, currently saved opcode
is not statically allocated in kprobe structure, that can not assure
16 bytes alignment. This patch dynamically allocated kprobe instruction
opcode to assure 16 bytes alignment.
Signed-off-by: bibo mao <bibo.mao@intel.com>
Acked-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Add support for making ESI calls [1]. ESI stands for "Extensible SAL
specification" and is basically a way for invoking firmware
subroutines which are identified by a GUID. I don't know whether ESI
is used by vendors other than HP (if you do, please let me know) but
as firmware "backdoors" go, this seems one of the cleaner methods, so
it seems reasonable to support it, even though I'm not aware of any
publicly documented ESI calls. I'd have liked to make the ESI module
completely stand-alone, but unfortunately that is not easily (or not
at all) possible because in order to make ESI calls in physical mode,
a small stub similar to the EFI stub is needed in the kernel proper.
I did try to create a stub that would work in user-level, but it
quickly got ugly beyond recognition (e.g., the stub had to make
assumptions about how the module-loader generated call-stubs work) and
I didn't even get it to work (that's probably fixable, but I didn't
bother because I concluded it was too ugly anyhow). While it's not
terribly elegant to have kernel code which isn't actively used in the
kernel proper, I think it might be worth making an exception here for
two reasons: the code is trivially small (all that's really needed is
esi_stub.S) and by including it in the normal kernel distro, it might
encourage other OEMs to also use ESI, which I think would be far
better than each inventing their own firmware "backdoor".
The code was originally written by Alex. I just massaged and packaged
it a bit (and perhaps messed up some things along the way...).
Changes since first version of patch that was posted to mailing list:
* Export ia64_esi_call and ia64_esi_call_phys() as GPL symbols.
* Disallow building esi.c as a module for now. Building as a module
would currently lead to an unresolved reference to "sal_lock" on SMP kernels
because that symbol doesn't get exported.
* Export esi_call_phys() only if ESI is enabled.
* Remove internal stuff from esi.h and add a "proc_type" argument to
ia64_esi_call() such that serialization-requirements can be expressed (ESI
follows SAL here, where procedure calls may have to be serialized, are
MP-safe, or MP-safe andr reentrant).
[1] h21007.www2.hp.com/dspp/tech/tech_TechDocumentDetailPage_IDX/1,1701,919,00.html
Signed-off-by: David Mosberger <David.Mosberger@acm.org>
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Linux ia64 port tried to decode the processor family number
to something human-readable, but Intel brandnames don't change
synchronously with updates to the family number. Adopt a more
i386-like approach and just print the family number in decimal.
Add a new field "model name" that uses PAL_BRAND_INFO to find
the official name for the cpu, or on older systems, falls back
to using the well-known codenames (Merced, McKinley, Madison).
Signed-off-by: Tony Luck <tony.luck@intel.com>
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Ahoy, all land-lubbers, test me out right smartly!
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[IPV4] fib_trie: missing ntohl() when calling fib_semantic_match()
[NETFILTER]: xt_quota: add missing module aliases
[ATM]: [he] don't hold the device lock when upcalling
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fib_trie.c::check_leaf() passes host-endian where fib_semantic_match()
expects (and stores into) net-endian.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add missing aliases for ipt_quota and ip6t_quota to make autoload
work.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This can create a deadlock/lock ordering problem with other layers
that want to use the transmit (or other) path of the card at that
time.
Signed-off-by: Chas Williams <chas@cmf.nrl.navy.mil>
Signed-off-by: David S. Miller <davem@davemloft.net>
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* 'fixes' of git://git.linux-nfs.org/pub/linux/nfs-2.6:
NFS: Fix nfs_page use after free issues in fs/nfs/write.c
NFSv4: Fix incorrect semaphore release in _nfs4_do_open()
NFS: Fix Oopsable condition in nfs_readpage_sync()
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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This reverts commits 11012d419cfc0e0f78ca356aca03674217910124 and
40dd2d20f220eda1cd0da8ea3f0f9db8971ba237, which allowed us to use the
MMIO accesses for PCI config cycles even without the area being marked
reserved in the e820 memory tables.
Those changes were needed for EFI-environment Intel macs, but broke some
newer Intel 965 boards, so for now it's better to revert to our old
2.6.17 behaviour and at least avoid introducing any new breakage.
Andi Kleen has a set of patches that work with both EFI and the broken
Intel 965 boards, which will be applied once they get wider testing.
Cc: Arjan van de Ven <arjan@infradead.org>
Cc: Edgar Hucek <hostmaster@ed-soft.at>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* git://git.infradead.org/mtd-2.6:
[MTD] Use SEEK_{SET,CUR,END} instead of hardcoded values in mtdchar lseek()
MTD: Fix bug in fixup_convert_atmel_pri
[JFFS2][SUMMARY] Fix a summary collecting bug.
[PATCH] [MTD] DEVICES: Fill more device IDs in the structure of m25p80
MTD: Add lock/unlock operations for Atmel AT49BV6416
MTD: Convert Atmel PRI information to AMD format
fs/jffs2/xattr.c: remove dead code
[PATCH] [MTD] Maps: Add dependency on alternate probe methods to physmap
[PATCH] MTD: Add Macronix MX29F040 to JEDEC
[MTD] Fixes of performance and stability issues in CFI driver.
block2mtd.c: Make kernel boot command line arguments work (try 4)
[MTD NAND] Fix lookup error in nand_get_flash_type()
remove #error on !PCI from pmc551.c
MTD: [NAND] Fix the sharpsl driver after breakage from a core conversion
[MTD] NAND: OOB buffer offset fixups
make fs/jffs2/nodelist.c:jffs2_obsolete_node_frag() static
[PATCH] [MTD] NAND: fix dead URL in Kconfig
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Signed-off-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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The memset() in fixup_convert_atmel_pri is supposed to zero out
everything except the first 5 bytes in *extp, but it ends up zeroing
out something way outside the struct instead. Fix this potentially
dangerous code by casting the pointer to char * before doing
arithmetic.
Signed-off-by: Håvard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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In some special case (padding because of sync
or umount) it can be possible that summary
information is not fit to the end of the erase
block. In these cases the collecting of summary
is disabled for this erase block.
The problem was that this was not respected
by jffs2_sum_add_kvec(). This patch fix this
bug.
From: Zoltan Sogor <weth@inf.u-szeged.hu>
Signed-off-by: Ferenc Havasi <havasi@inf.u-szeged.hu>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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The flash_info structure has a bunch of missing fields which causes problems
when actually tryin to use some ST parts as it gets detected incorrectly.
Signed-off-by: Aubrey L1 <aubreylee@gmail.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
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The AT49BV6416 is locked by default, so we really need to provide
at least the unlock() operation for write and erase to work. This
patch implements both ->lock() and ->unlock() and provides a fixup
to install them when an AT49BV6416 chip is detected.
These functions are probably valid on more Atmel chips, but I believe
it's mostly obsolete ones. The AT49BV6416 is in fact obsolete, but
it's used on all current AT32STK1000 development boards.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
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Atmel flash chips don't have PRI information in the same format as
AMD flash chips. This patch installs a fixup for all Atmel chips that
converts the relevant PRI fields into AMD format.
Only the fields that are actually used by the command set is actually
converted. The rest are initialized to zero (which should be safe)
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
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This patch removes some obvious dead code spotted by the Coverity
checker.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
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map/physmap.c tries to probe "cfi_probe", "jedec_probe" and "map_rom", but
map/Kconfig says it depends on MTD_CFI only.
This patch adds MTD_JEDECPROBE and MTD_ROM to the dependency condition.
Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
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Signed-off-by: Takashi YOSHII <takasi-y@ops.dti.ne.jp>
Signed-off-by: Josh Boyer <jwboyer@gmail.com>
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Fix of performance and stability issues on Intel NOR chips. It fixes:
1. Very low write performance on Sibley (perf tests demonstrated write
performance less than 100Kb/sec when it should be over 400Kb/sec).
2. Low erase performance. (perf tests on Sibleuy demonstrated erase
performance 246Kb/sec when it should be over 300Kb/sec).
3. Error on JFFS2 tests with CPU loading application when MTD returns
"block erase error: (status timeout)" To fix the issue it does the
following:
1. Removes the timeout tuning from inval_cache_and_wait_for_operation.
2. Waiting conditions in inval_cache_and_wait_for_operation now is
based on timer resolution
If timeout is lower than timer resolution then we do in cycle
"Checking the status"
udelay(1);
cond_resched();
If timeout is greater than timer resolution (probably erase
operation) We do the following
sleep for half of operation timeout and do in cycle the following
"Checking the status"
sleep for timer resolution
Signed-off-by: Nicolas Pitre <nico@cam.org>
Signed-off-by: Alexey Korolev <akorolev@infradead.org>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Trying to pass kernel command line arguments to block2mtd at boot-time does
not work currently. block2mtd_setup() is called so early that kmalloc()
fails nevermind being able to do open_bdev_excl() (which requires rootfs to
be mounted. This patch only saves the option string at the early boot stage,
and parses them later when block2mtd_init() is called. If open_bdev_excl()
fails, open_by_devnum(name_to_dev_t()) is tried instead, which makes it
possible to initialize the driver before rootfs has been mounted. Also gets
rid of the superfluous parse_name() that only checks if name is longer than
80 chars and copies it to a string that is not kfreed.
With this patch, I can boot statically compiled block2mtd, and mount jffs2
as rootfs (without modules or initrd), with lilo config like this:
root=/dev/mtdblock0
append="rootfstype=jffs2 block2mtd.block2mtd=/dev/hdc2,65536"
(Note that rootfstype=jffs2 is required, since the kernel only tries
filesystems without "nodev" attribute by default, and jffs is "nodev").
Compared to first version of this patch, this one does not copy the
parameters to the global buffer if init has already been called, and the
global array is marked as __initdata.
Compared to the second version of this patch, module build is fixed.
Compared to the third version of this patch, statically compiled block2mtd
driver with no boot-time parameter no longer gives spurious error 'cannot
open device ""'
Signed-off-by: Ville Herva <vherva@vianova.fi>
Acked-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Spotted by liyu <liyu@ccoss.com.cn>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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PMC551 depends on PCI in Kconfig so there is no need to #error in code if PCI
is not set.
Signed-off-by: Rolf Eike Beer <eike-kernel@sf-tec.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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The CNE bits are inverted on the device and writeb function is missing a
NOT operation.
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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In the case of data-pad-ecc-pad-data... layout the oob start position
has to be sizeof(data) in nand_write_oob_syndrom().
In nand_fill_oob() we need to copy to buf + buffer offset instead of
buf + write offset.
From: Vitaly Wool <vwool@ru.mvista.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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This patch makes the needlessly global jffs2_obsolete_node_frag()
static.
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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Signed-off-by: Artem B. Bityutskiy <dedekind@infradead.org>
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Fix a performance degradation introduced in 2.6.17. (30% degradation
running dbench with 16 threads)
Commit 21730eed11de42f22afcbd43f450a1872a0b5ea1, which claims to make
EXT2_DEBUG work again, moves the taking of the kernel lock out of
debug-only code in ext2_count_free_inodes and ext2_count_free_blocks and
into ext2_statfs.
The same problem was fixed in ext3 by removing the lock completely (commit
5b11687924e40790deb0d5f959247ade82196665)
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Remove definitions of PAGE_* from the user view
Delete unnecessary comments referring to the size of pages
Only include <asm-generic> if we're in __KERNEL__
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Fix 'make headers_check' on m68k
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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