- 23 Aug, 2007 15 commits
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Andy Whitcroft authored
As pointed out by Mel when reclaim is applied at higher orders a significant amount of IO may be started. As this takes finite time to drain reclaim will consider more areas than ultimatly needed to satisfy the request. This leads to more reclaim than strictly required and reduced success rates. I was able to confirm Mel's test results on systems locally. These show that even under light load the success rates drop off far more than expected. Testing with a modified version of his patch (which follows) I was able to allocate almost all of ZONE_MOVABLE with a near idle system. I ran 5 test passes sequentially following system boot (the system has 29 hugepages in ZONE_MOVABLE): 2.6.23-rc1 11 8 6 7 7 sync_lumpy 28 28 29 29 26 These show that although hugely better than the near 0% success normally expected we can only allocate about a 1/4 of the zone. Using synchronous reclaim for these allocations we get close to 100% as expected. I have also run our standard high order tests and these show no regressions in allocation success rates at rest, and some significant improvements under load. This patch: We are transitioning pages from active to inactive in clear_active_flags, those need counting as PGDEACTIVATE vm events. Signed-off-by:
Andy Whitcroft <apw@shadowen.org> Acked-by:
Mel Gorman <mel@csn.ul.ie> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Yoshinori Sato authored
Build error fix. Signed-off-by:
Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by:
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Michael Neuling authored
Commit b663a79c ("taskstats: add context-switch counters") incorrectly removed a comma from a printf statement. This causes corruption in the output printing or a seg fault. Signed-off-by:
Michael Neuling <mikey@neuling.org> Acked-by:
Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by:
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Andrew Morton authored
If we're going to run the handler from free_irq() then we must do it with local irq's disabled. Otherwise lockdep complains that the handler is taking irq-safe spinlocks in a non-irq-safe fashion. Cc: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by:
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Christian Schmidt authored
The serial_pci driver tries to guess serial ports on unknown devices based on the PCI class (modem or serial). On certain softmodems (AC'97 modems) this can lead to the recognition of non-existing serial ports. This patch adds a blacklist of PCI IDs that are to be ignored by the driver. [akpm@linux-foundation.org: cleanups] Signed-off-by:
Christian Schmidt <schmidt@digadd.de> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Russell King <rmk+lkml@arm.linux.org.uk> Cc: Yinghai Lu <yinghai.lu@sun.com> Acked-by:
Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Corey Minyard authored
Reading the LSR clears the break, parity, frame error, and overrun bits in the 8250 chip, but these are not being saved in all places that read the LSR. Same goes for the MSR delta bits. Save the LSR bits off whenever the lsr is read so they can be handled later in the receive routine. Save the MSR bits to be handled in the modem status routine. Also, clear the stored bits and clear the interrupt registers before enabling interrupts, to avoid handling old values of the stored bits in the interrupt routines. [akpm@linux-foundation.org: clean up pre-existing code] Signed-off-by:
Corey Minyard <minyard@acm.org> Cc: Russell King <rmk+lkml@arm.linux.org.uk> Cc: Yinghai Lu <yinghai.lu@sun.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Acked-by:
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Atsushi Nemoto authored
This chip does not have modem control lines. Return TIOCM_CAR and TIOCM_DSR always on get_mctrl() and ajust some bits in termios cflag. Signed-off-by:
Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Acked-by:
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Niels de Vos authored
Add support for the it887x-chips (PCI) manufactured by ITE. Signed-off-by:
Niels de Vos <niels.devos@wincor-nixdorf.com> Cc: Russell King <rmk@arm.linux.org.uk> Acked-by:
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David Woodhouse authored
The uart_set_termios() function will bail out early without bothering to touch the hardware, if it decides that nothing "relevant" has changed. Unfortunately, its idea of "relevant" doesn't include c_[io]speed. So if the baud rate bits are BOTHER and you just change the speed, the change gets optimised away. This patch makes it ignore the old Bfoo bits in c_cflag and just check whether c_ispeed and c_ospeed have changed. Those integers are always set appropriately for us by set_termios(). Signed-off-by:
David Woodhouse <dwmw2@infradead.org> Acked-by:
Alan Cox <alan@redhat.com> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by:
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john stultz authored
Avoid futex_unlock_pi returning -EFAULT (which results in deadlock), by clearing uval before jumping to retry_locked. Signed-off-by:
John Stultz <johnstul@us.ibm.com> Acked-by:
Steven Rostedt <rostedt@goodmis.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Lee Schermerhorn authored
I couldn't find any memory policy documentation in the Documentation directory, so here is my attempt to document it. There's lots more that could be written about the internal design--including data structures, functions, etc. However, if you agree that this is better that the nothing that exists now, perhaps it could be merged. This will provide a baseline for updates to document the many policy patches that are currently being worked. Signed-off-by:
Lee Schermerhorn <lee.schermerhorn@hp.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Acked-by:
Rob Landley <rob@landley.net> Acked-by:
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Adrian Bunk authored
This patch fixes an off-by-one in a BUG_ON() spotted by the Coverity checker. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Cc: Amy Griffis <amy.griffis@hp.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Kent Yoder authored
Fix up the maintainers info in the tpm drivers. Kylene will be out for some time, so copying the sourceforge list is the best way to get some attention. Cc: Marcel Selhorst <tpm@selhorst.net> Cc: Kylene Jo Hall <kjhall@us.ibm.com> Signed-off-by:
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Andy Whitcroft authored
Booting SPARSEMEM on NUMA systems trips a BUG in page_alloc.c: Initializing HighMem for node 0 (00038000:00100000) Initializing HighMem for node 1 (00100000:001ffe00) ------------[ cut here ]------------ kernel BUG at /home/apw/git/linux-2.6/mm/page_alloc.c:456! [...] This occurs because the section to node id mapping is not being setup correctly during init under SPARSEMEM_STATIC, leading to an attempt to free pages from all nodes into the zones on node 0. When the zone_table[] was removed in the following commit, a new section to node mapping table was introduced: commit 89689ae7 [PATCH] Get rid of zone_table[] That conversion inadvertantly only initialised the node mapping in SPARSEMEM_EXTREME. Ensure we initialise the node mapping in SPARSEMEM_STATIC. [akpm@linux-foundation.org: make the stubs static inline] Signed-off-by: -
Ryusuke Konishi authored
When ecryptfs_lookup() is called against special files, eCryptfs generates the following errors because it tries to treat them like regular eCryptfs files. Error opening lower file for lower_dentry [0xffff810233a6f150], lower_mnt [0xffff810235bb4c80], and flags [0x8000] Error opening lower_file to read header region Error attempting to read the [user.ecryptfs] xattr from the lower file; return value = [-95] Valid metadata not found in header region or xattr region; treating file as unencrypted For instance, the problem can be reproduced by the steps below. # mkdir /root/crypt /mnt/crypt # mount -t ecryptfs /root/crypt /mnt/crypt # mknod /mnt/crypt/c0 c 0 0 # umount /mnt/crypt # mount -t ecryptfs /root/crypt /mnt/crypt # ls -l /mnt/crypt This patch fixes it by adding a check similar to directories and symlinks. Signed-off-by:
Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Acked-by:
Michael Halcrow <mhalcrow@us.ibm.com> Signed-off-by:
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- 22 Aug, 2007 23 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdogLinus Torvalds authored
* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog: [WATCHDOG] Add support for 1533 bridge to alim1535_wdt [WATCHDOG] Add a 00-INDEX file to Documentation/watchdog/ [WATCHDOG] Eurotechwdt.c - clean-up comments
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Linus Torvalds authored
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC32]: Revert f642b263. [SPARC64]: Need to clobber global reg vars in switch_to().
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Linus Torvalds authored
* 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [IRDA] irda_nl_get_mode: always results in failure [PPP]: Fix output buffer size in ppp_decompress_frame(). [IRDA]: Avoid a label defined but not used warning in irda_init() [IPV6]: Fix kernel panic while send SCTP data with IP fragments [SNAP]: Check packet length before reading [DCCP]: Allocation in atomic context
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git://git390.osdl.marist.edu/pub/scm/linux-2.6Linus Torvalds authored
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Change atomic_read/set to inline functions with barrier semantics. [S390] kprobes: fix instruction length calculation [S390] hypfs: inode corruption due to missing locking [S390] disassembler: fix b2 opcodes like srst, bsg, and others [S390] vmur: fix reference counting for vmur device structure [S390] vmur: fix diag14 exceptions with addresses > 2GB. [S390] qdio: Refresh buffer states for IQDIO Asynchronous output queue [S390] qdio: fix EQBS handling on CCQ96 [S390] cio: change confusing message in cmf. [S390] cio: dont forget to set last slot to NULL in ccw_uevent().
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Zachary Amsden authored
Touching vmalloc memory in the middle of a lazy mode update can generate a kernel PDE update, which must be flushed immediately. The fix is to leave lazy mode when doing a vmalloc sync. Signed-off-by:
Zachary Amsden <zach@vmware.com> Acked-by:
Jeremy Fitzhardinge <jeremy@goop.org> Signed-off-by:
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Heiko Carstens authored
After doing some tests this seems to be the best variant for s390 and should be correct as well. With gcc 4.2.1 we get the following kernel image sizes using the default configuration: atomic_t type volatile, atomic_read/set defines 5311824 bytes atomic_t type int, atomic_read/set defines 5270864 bytes atomic_t type int, atomic_read/set inline asm 5279056 bytes atomic_t type int, atomic_read/set inline barrier 5270864 bytes Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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David Wilder authored
Placing a kprobe on "bc" instruction (s390/s390x) can cause an oops. The instruction length is encoded into the first two bits of the s390 instruction. Kprobe is incorrectly computing the instruction length. The instruction length is used for determining what type of "fix-up" is needed for conditional branch instruction. The problem can bee seen by placing a kprobe on a "bc" instruction that will not branch. The results is that Kprobe incorrectly computes the new instruction pointer (psw.addr) after single stepping the instruction. The problem is corrected with this patch. Signed-off-by:
David Wilder <dwilder@us.ibm.com> Signed-off-by:
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Michael Holzheu authored
hypfs removes the whole hypfs directory tree and creates a new one, when a process triggers an update by writing to the "update" attribute. When removing and creating files, it is necessary to lock the inode of the parent directory where the files live. Currently hypfs does not lock the parent inode, which can lead to inode corruption. This patch: * Introduces correct locking * Fixes i_nlink reference counting for inodes, when creating directories * Adds info printk, when hypfs filesystem has been mounted Signed-off-by:
Michael Holzheu <holzheu@de.ibm.com> Signed-off-by:
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Christian Borntraeger authored
The instruction table for b2 opcodes was missing an opfrag value for the cpya instruction. All instructions specified after cpya were not considered by the disassembler. The fix is simple and obvious - add the opfrag field to the cpya instruction. Signed-off-by:
Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by:
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Michael Holzheu authored
When a vmur device is removed due to a detach of the device, currently the ur device structure is freed. Unfortunately it can happen, that there is still a user of the device structure, when the character device is open during the detach process. To fix this, reference counting for the vmur structure is introduced. In addition to that, the online, offline, probe and remove functions are serialized now using a global mutex. Signed-off-by:
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Michael Holzheu authored
There are several s390 diagnose calls, which must be executed below the 2GB memory boundary. In order to enforce this, those diagnoses must be compiled into the kernel. Currently diag 14 can be called within the vmur kernel module from addresses above 2GB. This leads to specification exceptions. This patch moves diag10, diag14 and diag210 into the new diag.c file. Signed-off-by:
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Klaus D. Wacker authored
Hipersocket Multicast queue works asynchronously. When sending buffers, the buffer state change may happen delayed. The tasklet for checking changes in the outbound queue excluded IQDIO async queues from this process. This created either a hang situation when the queue ran full, or presented a hang situation a interface close time. The tasklet processing is changed to include IQDIO async queues when requesting buffer state refresh. Signed-off-by:
Klaus D. Wacker <kdwacker@de.ibm.com> Signed-off-by:
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Klaus D. Wacker authored
QDIO returned from EQBS instruction in any case after return code CCQ=96 was issued regardless whether buffer states for at least one buffer were extracted or not. This caused FCP devices to hang when running under z/VM and having QIOASSASIST=ON and having high I/O rates. In order to fix this qdio return code processing of EQBS instruction after CCQ=96 is changed that buffers are returned and if no buffers where extracted the instruction is repeated at once. Signed-off-by:
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Cornelia Huck authored
cmf currently prints a message that more than 4096 channels are not allowed in basic mode - however, this can only be enforced if cmf was a module (which is no longer possible). It makes much more sense to not check the specified number of channels and just print a message if the block for basic mode could not be allocated (which may happen for any number of specified channels). Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
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Cornelia Huck authored
Signed-off-by:
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Andy Whitcroft authored
It seems an extraneous trailing ';' has slipped in to the error handling for a name registration failure causing the error path to trigger unconditionally. Signed-off-by:
Samuel Ortiz <samuel@sortiz.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Konstantin Sharlaimov authored
This patch addresses the issue with "osize too small" errors in mppe encryption. The patch fixes the issue with wrong output buffer size being passed to ppp decompression routine. -------------------- As pointed out by Suresh Mahalingam, the issue addressed by ppp-fix-osize-too-small-errors-when-decoding patch is not fully resolved yet. The size of allocated output buffer is correct, however it size passed to ppp->rcomp->decompress in ppp_generic.c if wrong. The patch fixes that. -------------------- Signed-off-by:
Konstantin Sharlaimov <konstantin.sharlaimov@gmail.com> Signed-off-by:
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Jesper Juhl authored
Easily avoidable compiler warnings bug me. Building irmod without CONFIG_SYSCTL currently results in : net/irda/irmod.c:132: warning: label 'out_err_2' defined but not used But that can easily be avoided by simply moving the label inside the existing "#ifdef CONFIG_SYSCTL" one line above it. This patch moves the label and buys us one less warning with no ill effects. Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
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Wei Yongjun authored
If ICMP6 message with "Packet Too Big" is received after send SCTP DATA, kernel panic will occur when SCTP DATA is send again. This is because of a bad dest address when call to skb_copy_bits(). The messages sequence is like this: Endpoint A Endpoint B <------- SCTP DATA (size=1432) ICMP6 message -------> (Packet Too Big pmtu=1280) <------- Resend SCTP DATA (size=1432) ------------kernel panic--------------- printing eip: c05be62a *pde = 00000000 Oops: 0002 [#1] SMP Modules linked in: scomm l2cap bluetooth ipv6 dm_mirror dm_mod video output sbs battery lp floppy sg i2c_piix4 i2c_core pcnet32 mii button ac parport_pc parport ide_cd cdrom serio_raw mptspi mptscsih mptbase scsi_transport_spi sd_mod scsi_mod ext3 jbd ehci_hcd ohci_hcd uhci_hcd CPU: 0 EIP: 0060:[<c05be62a>] Not tainted VLI EFLAGS: 00010282 (2.6.23-rc2 #1) EIP is at skb_copy_bits+0x4f/0x1ef eax: 000004d0 ebx: ce12a980 ecx: 00000134 edx: cfd5a880 esi: c8246858 edi: 00000000 ebp: c0759b14 esp: c0759adc ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 Process swapper (pid: 0, ti=c0759000 task=c06d0340 task.ti=c0713000) Stack: c0759b88 c0405867 ce12a980 c8bff838 c789c084 00000000 00000028 cfd5a880 d09f1890 000005dc 0000007b ce12a980 cfd5a880 c8bff838 c0759b88 d09bc521 000004d0 fffff96c 00000200 00000100 c0759b50 cfd5a880 00000246 c0759bd4 Call Trace: [<c0405e1d>] show_trace_log_lvl+0x1a/0x2f [<c0405ecd>] show_stack_log_lvl+0x9b/0xa3 [<c040608d>] show_registers+0x1b8/0x289 [<c0406271>] die+0x113/0x246 [<c0625dbc>] do_page_fault+0x4ad/0x57e [<c0624642>] error_code+0x72/0x78 [<d09bc521>] ip6_output+0x8e5/0xab2 [ipv6] [<d09bcec1>] ip6_xmit+0x2ea/0x3a3 [ipv6] [<d0a3f2ca>] sctp_v6_xmit+0x248/0x253 [sctp] [<d0a3c934>] sctp_packet_transmit+0x53f/0x5ae [sctp] [<d0a34bf8>] sctp_outq_flush+0x555/0x587 [sctp] [<d0a34d3c>] sctp_retransmit+0xf8/0x10f [sctp] [<d0a3d183>] sctp_icmp_frag_needed+0x57/0x5b [sctp] [<d0a3ece2>] sctp_v6_err+0xcd/0x148 [sctp] [<d09cf1ce>] icmpv6_notify+0xe6/0x167 [ipv6] [<d09d009a>] icmpv6_rcv+0x7d7/0x849 [ipv6] [<d09be240>] ip6_input+0x1dc/0x310 [ipv6] [<d09be965>] ipv6_rcv+0x294/0x2df [ipv6] [<c05c3789>] netif_receive_skb+0x2d2/0x335 [<c05c5733>] process_backlog+0x7f/0xd0 [<c05c58f6>] net_rx_action+0x96/0x17e [<c042e722>] __do_softirq+0x64/0xcd [<c0406f37>] do_softirq+0x5c/0xac ======================= Code: 00 00 29 ca 89 d0 2b 45 e0 89 55 ec 85 c0 7e 35 39 45 08 8b 55 e4 0f 4e 45 08 8b 75 e0 8b 7d dc 89 c1 c1 e9 02 03 b2 a0 00 00 00 <f3> a5 89 c1 83 e1 03 74 02 f3 a4 29 45 08 0f 84 7b 01 00 00 01 EIP: [<c05be62a>] skb_copy_bits+0x4f/0x1ef SS:ESP 0068:c0759adc Kernel panic - not syncing: Fatal exception in interrupt Arnaldo says: ==================== Thanks! I'm to blame for this one, problem was introduced in: b0e380b1 @@ -761,7 +762,7 @@ slow_path: /* * Copy a block of the IP datagram. */ - if (skb_copy_bits(skb, ptr, frag->h.raw, len)) + if (skb_copy_bits(skb, ptr, skb_transport_header(skb), len)) BUG(); left -= len; ==================== Signed-off-by:Wei Yongjun <yjwei@cn.fujitsu.com> Acked-by:
YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:
Arnaldo Carvalho de Melo <acme@ghostprotocols.net> Signed-off-by:
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Herbert Xu authored
The snap_rcv code reads 5 bytes so we should make sure that we have 5 bytes in the head before proceeding. Based on diagnosis and fix by Evgeniy Polyakov, reported by Alan J. Wylie. Patch also kills the skb->sk assignment before kfree_skb since it's redundant. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Gerrit Renker authored
This fixes the following bug reported in syslog: [ 4039.051658] BUG: sleeping function called from invalid context at /usr/src/davem-2.6/mm/slab.c:3032 [ 4039.051668] in_atomic():1, irqs_disabled():0 [ 4039.051670] INFO: lockdep is turned off. [ 4039.051674] [<c0104c0f>] show_trace_log_lvl+0x1a/0x30 [ 4039.051687] [<c0104d4d>] show_trace+0x12/0x14 [ 4039.051691] [<c0104d65>] dump_stack+0x16/0x18 [ 4039.051695] [<c011371e>] __might_sleep+0xaf/0xbe [ 4039.051700] [<c0157b66>] __kmalloc+0xb1/0xd0 [ 4039.051706] [<f090416f>] ccid2_hc_tx_alloc_seq+0x35/0xc3 [dccp_ccid2] [ 4039.051717] [<f09048d6>] ccid2_hc_tx_packet_sent+0x27f/0x2d9 [dccp_ccid2] [ 4039.051723] [<f085486b>] dccp_write_xmit+0x1eb/0x338 [dccp] [ 4039.051741] [<f085603d>] dccp_sendmsg+0x113/0x18f [dccp] [ 4039.051750] [<c03907fc>] inet_sendmsg+0x2e/0x4c [ 4039.051758] [<c033a47d>] sock_aio_write+0xd5/0x107 [ 4039.051766] [<c015abc1>] do_sync_write+0xcd/0x11c [ 4039.051772] [<c015b296>] vfs_write+0x118/0x11f [ 4039.051840] [<c015b932>] sys_write+0x3d/0x64 [ 4039.051845] [<c0103e7c>] syscall_call+0x7/0xb [ 4039.051848] ======================= The problem was that GFP_KERNEL was used; fixed by using gfp_any(). Signed-off-by:
Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by:
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Robin Getz authored
Gerd Hoffmann pointed out that my patch from yesterday can lead to a null pointer dereference if the kernel is booted with no console, and no earlyprintk defined. This fixes that issue. Signed-off-by:
Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by:
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Kumar Gala authored
The initial user manuals for MPC8544/8533 had some issues with properly documenting the device IDs for MPC8544/8533. These processors are almost identical and both show up on the reference boards. Fix up the quirks for PCIe support to handle MPC8533/E. Signed-off-by:Kumar Gala <galak@kernel.crashing.org>
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- 21 Aug, 2007 2 commits
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Stephen Hemminger authored
There are special PHY settings available on Yukon EC-U chip that should not get cleared. This should solve mysterious errors on some motherboards (like Gigabyte DS-3). Signed-off-by:
Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by:
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Martin Bachem authored
This fixes handling of USB ISO completion error -EXDEV and includes several other changes to current CVS version at isdn4linux.de (changes in debug flags, style of code remarks, etc) Signed-off-by:
Martin Bachem <info@colognechip.com> Acked-by:
Karsten Keil <kkeil@suse.de> Signed-off-by:
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