- 03 Aug, 2004 1 commit
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Vojtech Pavlik authored
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- 02 Aug, 2004 39 commits
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Benjamin Herrenschmidt authored
On old powermacs, it's possible that we get a stale edge interrupt when doing request_irq(), that typically happens with the DBDMA controller interrupts when the device was used by the firmware for booting. I just tracked down a nasty memory corruption problem where that was causing the bmac driver to try to process packets before the driver internal data structures were properly initialized. While I agree that the driver should (and will) be made more robust to such things, Paulus and I decided that it makes little sense to keep track of an "old" edge interrupt that happens before a driver does request_irq. (On those powermacs, those are only the DBDMA interrupts anyway, and none of the DBDMA users will care). This patch implements a "startup" handler for the old Apple PIC that will "ack" pending edge interrupts before unmasking, thus preventing those stale interrupts to be delivered. It also "fixes" the ppc32 irq core to call the startup() callback when available instead of just calling enable(). Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Jens Axboe authored
blk_rq_map_user() is a bit of a hack currently, since it drops back to kmalloc() if bio_map_user() fails. This is unfortunate since it means we do no real segment or size checking (and the request segment counts contain crap, already found one bug in a scsi lld). It's also pretty nasty for > PAGE_SIZE requests, as we attempt to do higher order page allocations. Even worse still, ide-cd will drop back to PIO for non-sg/bio requests. All in all, very suboptimal. This patch adds bio_copy_user() which simply sets up a bio with kernel pages and copies data as needed for reads and writes. It also changes bio_map_user() to return an error pointer like bio_copy_user(), so we can return something sane to the user instead of always -ENOMEM. Signed-off-by:
Jens Axboe <axboe@suse.de> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Vojtech Pavlik authored
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bk://kernel.bkbits.net/davem/net-2.6Linus Torvalds authored
into ppc970.osdl.org:/home/torvalds/v2.6/linux
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Kumar Gala authored
Fix the fact that we were not the signal processing engine status and control register (SPEFSCR) on giveup_spe. Causes problems when the kernel tries to read or modify the SPEFSCR. Signed-off-by:
Kumar Gala <kumar.gala@freescale.com> Signed-off-by:
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Vojtech Pavlik authored
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Stephen Hemminger authored
Small change to bictcp based on the BIC 1.1 patches for web100. Keep track of last time congestion was computed, and recompute if cwnd changes or every 1/32 of a second. Also changes the initialization location for the parameters. Signed-off-by:
Stephen Hemminger <shemminger@osdl.org> Signed-off-by:
David S. Miller <davem@redhat.com>
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Herbert Xu authored
This patch moves xfrm[46]_tunnel_check_size() into xfrm[46]_output.c where it can be made static since it's only used there. While moving the icmp.h inclusions over I also discovered that the tunnel files are missing an inclusion of net/protocol.h. So I've added them as well. Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Herbert Xu authored
This is a couple of clean-ups stemming from the xfrm_output change. I should've removed the inet_ecn.h inclusions in that change as the ECN code has been moved to xfrm[46]_output.c. This patch does exactly that. Signed-off-by:
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Ralph Loader authored
ipv6_addr_hash doesn't do what it's comment says. The comment was probably what was intended, not that it'll make much difference in practice. Signed-off-by:
Ralph Loader <suckfish@ihug.co.nz> Signed-off-by:
Yoshifuji Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by:
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Andrew Morton authored
gcc-2.95.c does not support anonymous unions. Signed-off-by:
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David S. Miller authored
into nuts.davemloft.net:/disk1/BK/net-2.6
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Hirofumi Ogawa authored
Previously, fatfs was using NLS_DEFAULT if users didn't specify the codepage or iocharset option. This became cause of trouble (filename access). This patch removes the complicated default config in kernel. Instead of it, by default, fatfs uses builtin nls ("default"), also reports it and mounts as read-only. This default will limit the access more or less. Note: If peoples want to write on this default, it still can switch by remount. Therefore, basically users will need to specify mount options always. ("codepage" for msdos, and "codepage" and "iocharset" for vfat) However, it can be done simply by script or shell alias or something else in userland. Thanks to Andries Brouwer for your many advice. Signed-off-by:OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by:
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Michael Kerrisk authored
There is a lonstanding off-by-one error that results from an incorrect comparison when checking whether a process has consumed CPU time in excess of its RLIMIT_CPU limits. This means, for example, that if we use setrlimit() to set the soft CPU limit (rlim_cur) to 5 seconds and the hard limit (rlim_max) to 10 seconds, then the process only receives a SIGXCPU signal after consuming 6 seconds of CPU time, and, if it continues consuming CPU after handling that signal, only receives SIGKILL after consuming 11 seconds of CPU time. The fix is trivial. Signed-off-by: -
Armin Schindler authored
Author: Armin Schindler, Nishanth Aravamudan Use kernel provided msleep() instead of own sleep implementation. Signed-off-by: -
Jens Axboe authored
There's a stupid error in the fall back logic, it fails to increment the user pointer so the wave file is corrupt. We should also clear last_sense just to be sure. Signed-off-by:
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Steve Dickson authored
Here are some oops I found in error paths in the mounting pathes while debugging something else... I sent it out a while ago, but it didn't seem to get any traction.... The nfs_fill_super() fix is obvious and in nfs4_fill_super(), the server->client ptr needs to be set before the cl_idmap check, since rpc_shutdown_client() needs it when the check fails. Signed-off-by:
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Brian Gerst authored
Remove the unused symbol_is() macro. Signed-off-by:
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Adrian Bunk authored
Below is a patch by Hans Ulrich Niedermann <linux-kernel@n-dimensional.de> to change all references in comments to files in Documentation/ to start with Documentation/ Signed-off-by:
Adrian Bunk <bunk@fs.tum.de> Signed-off-by:
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Adrian Bunk authored
This file does not exist in 2.6. Signed-off-by:
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Bjorn Helgaas authored
This patch - adds copyright and license info - changes sense of mmap config option (setting option enables mmap instead of disabling it, to avoid the double negative) - removes an #ifdef CONFIG_IA64 now that acpi_register_gsi() is generic. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
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Andi Kleen authored
Sync nmi_watchdog.txt with reality on x86-64. Signed-off-by:
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Arnd Bergmann authored
Actually, the problem has its origin in my removal of all in-kernel syscalls (except execve, which is non-trivial) earlier this year. This change was blindly reverted by the maintainer, while at the same time the local errno variable was removed. See also http://linux.bkbits.net:8080/linux-2.5/hist/drivers/media/dvb/frontends/tda= 1004x.c This patch is the one that was already merged earlier. I'm now also removing the definitions for the kernel syscalls on i386 to make it harder to reintroduce them again. This was already done for ppc64, the others should probably follow. Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Paul Mackerras authored
Tom is looking after PPC8xx and the PPC boot code. Signed-off-by:
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Christoph Hellwig authored
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Christoph Hellwig authored
ACKed by the pmac folks a while ago. Also moves the Kconfig entry to where it belongs. Signed-off-by:
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Alan Cox authored
Revert the recent fdomain_cs config dependency "fix" and fix the linkage error with ifdeffery instead. Signed-off-by:
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Maciej W. Rozycki authored
Maciej has moved. Signed-off-by:
Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by:
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Bjorn Helgaas authored
The "vector" terminology is architecture-dependent. The PCI MSI interface actually deals with Linux IRQ numbers (i.e., things you can pass to request_irq()), and we shouldn't confuse things by calling them "vectors" just because we're using MSI rather than an IOSAPIC. Signed-off-by:
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Roland Dreier authored
Second half of MSI rewrite: fix the API and update documentation. Split enabling MSI and MSI-X to separate pci_enable_msi()/pci_disable_msi() and pci_enable_msix()/pci_disable_msix() functions. free_irq() no longer has the side effect of freeing interrupt vectors (so a device driver can do multiple request_irq()/free_irq() cycles on the same MSI/MSI_X vector). From: Tom L. Nguyen <tom.l.nguyen@intel.com> Signed-off-by:
Roland Dreier <roland@topspin.com> Signed-off-by:
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Roland Dreier authored
First half of the MSI rewrite: pure cleanup. Use proper pci_read_config_xxx() and pci_write_config_xxx() functions instead of accessing raw dev->bus->ops. Signed-off-by:
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Jesse Barnes authored
On a system with a lot of nodes, 4 lines of output per node is a lot to have to sit through as the system comes up, especially if you're on the other end of a slow serial link. The information is valuable though, so keep it around for the system logger. This patch makes the printks for the memory stats use KERN_DEBUG instead of the default loglevel. Signed-off-by:
Jesse Barnes <jbarnes@sgi.com> Signed-off-by:
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Alexey Dobriyan authored
Fix menuconfig inability to show help texts when there is menu item with letter "H" highlighted on the screen. Signed-off-by:
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Andrew Morton authored
Change the oom-killer so that it spits a sysrq-m output into the logs, and shows the gfp_mask of the failing allocation attempt. Signed-off-by:
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Kumar Gala authored
The following patch adds completes the CPU support for the MPC8555 PowerPC. Additionally, it adds support for the MPC8555 CDS reference board. This is another PowerPC in the Freescale MPC85xx family. * Add support for MPC8555 CPU and reference board Signed-off-by:
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Kumar Gala authored
The following patch adds completes the CPU support for the MPC8560 PowerPC. Additionally, it adds support for the MPC8560 ADS reference board and fixes up some build issues with the SBC8560 board. Signed-off-by:
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David Gibson authored
This patch removes a redundant #include of processor.h from arch/ppc64/boot/div64.S. I came across this because, at least with the binutils versions I have currently installed, the 32-bit assembler used for the bootstrap code objects to the // comments that recently went into processor.h. Signed-off-by:
David Gibson <dwg@au.ibm.com> Signed-off-by:
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Paul Mackerras authored
Rewrite/cleanup of the SLB management code. This removes nearly all the SLB related code from arch/ppc64/kernel/stab.c and puts a rewritten version in arch/ppc64/mm, where it better belongs. The main SLB miss path is in assembler and the other routines have been cleaned up and streamlined. Notable changes: - Ugly bitfields no longer used for generating SLB entries. - slb_allocate() (the main SLB miss routine) is now in assembler, and all the data it uses is stored in the PACA. - The mm context is now copied into the PACA at context switch time, to avoid looking up the thread struct on SLB miss. - An SLB miss will now never (directly) result in a call to do_page_fault. If we get a miss on a totally bogus address the handler will now put in an SLB referencing VSID 0. This will never have any pages, so we'll get the (fatal) page fault shortly afterwards. This simplifies the SLB entry and exit paths. - The round-robin pointer in the PACA now references the last-used instead of next-to-use SLB slot, which simplifies the asm for updating it slightly. - Unify do_slb_bolted with the general SLB miss path. There is now one SLB miss handler, in assembler, and called with only the low-level exception prolog (EXCEPTION_PROLOG_[PI]SERIES rather than EXCEPTION_PROLOG_COMMON) and minimal extra save/restore logic. - Streamlines the exception entry/exit path of the SLB miss handler to shave a few cycles off. The most significant change is that the RI bit is left off throughout the whole handler, which avoids an extra mtmsrd to turn it back off on the exit path. Signed-off-by:
David Gibson <david@gibson.dropbear.id.au> Signed-off-by:
Paul Mackerras <paulus@samba.org> Signed-off-by:
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Srivatsa Vaddagiri authored
Patch below fixes a cpu_up race in PPC64. Signed-off-by:
Srivatsa Vaddagiri <vatsa@in.ibm.com> Signed-off-by:
Anton Blanchard <anton@samba.org> Signed-off-by:
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