- 30 Dec, 2003 40 commits
-
-
David S. Miller authored
into nuts.ninka.net:/disk1/davem/BK/sparc-2.6
-
Andrew Morton authored
The reworked firmware loader in the DVB patches needs the fix to the call_usermodehelper() return value. From: Rusty Russell <rusty@rustcorp.com.au> MODULE_ALIAS_BLOCK() and MODULE_ALIAS_CHAR() define aliases of form "XXX-<major>-<minor>", so we should probe for modules using this form. Unfortunately in 2.4, block aliases were "XXX-<major>" and char aliases were of both forms. Ideally, all modules would now be using MODULE_ALIAS() macros to define their aliases, and the old configuration files wouldn't matter as much. Unfortunately, this hasn't happened, so we make request_module() return the exit status of modprobe, and then do fallback when probing for char and block devices. (Kudos to Chris Wright, I stole his kernel_thread flags).
-
Andrew Morton authored
From: David Hinds <dhinds@sonic.net> This removes dead PCI-related code from the i82365 driver.
-
Andrew Morton authored
From: David Hinds <dhinds@sonic.net> This changes the PCMCIA CIS parsing code to use kmalloc() rather than allocating some data structures on the kernel stack.
-
Andrew Morton authored
From: David Hinds <dhinds@sonic.net> This fixes interrupt allocation for 16-bit PCMCIA cards, so that on systems supporting ISA bus interrupts, if all ISA interrupts are unavailable, we'll fall back on sharing the bridge PCI interrupt.
-
Andrew Morton authored
From: David Hinds <dhinds@sonic.net> This fixes half/full duplex selection for certain NE2000 compatible PCMCIA cards.
-
Andrew Morton authored
From: David Hinds <dhinds@sonic.net> This just sets missing logging levels for printk's in yenta_socket.
-
Andrew Morton authored
From: David Hinds <dhinds@sonic.net> I have not been actively maintaining PCMCIA for 2.6; I tried asking the more active developers to see if someone would step into the job but they were not willing to do so at this time. I'll still submit patches from time to time. (David has a ./CREDITS entry, of course). We should really put in Russell King here, but I'll let him do that himself.
-
Andrew Morton authored
From: Tom Rini <trini@kernel.crashing.org> Peter Wahl <PeterWahl@web.de> PPC32: Fix the mkprep util to work correctly on Solaris 8. - There is a very odd problem with the alignment of dword_t values which causes this program to not work correctly when compiled on Solaris 8. The workaround is not use a pointer and to memcpy the values instead.
-
Andrew Morton authored
From: Tom Rini <trini@kernel.crashing.org> Fix compilation of arch/ppc/kernel/ppc_ksyms.c on !CONFIG_PPC_STD_MMU 'mol_trampoline' is only defined on CONFIG_PPC_STD_MMU. Therefore this file will not compile on !CONFIG_PPC_STD_MMU without this change.
-
Andrew Morton authored
From: Tom Rini <trini@kernel.crashing.org> The following patch fixes the 'znetboot' and 'znetbootrd' targets so that they work again. - Update the comments to reflect how things work with the correct usages now. - Fix the znetboot / znetbootrd targets. We now always set end-y, and use this to figure out what image will be tftpboot'ed.
-
Andrew Morton authored
From: Tom Rini <trini@kernel.crashing.org> Currently a number of Motorola PPC32 machine will not boot, as the final zImage isn't built correctly for them.
-
bk://firebox.phunnypharm.org:4040Linus Torvalds authored
into home.osdl.org:/home/torvalds/v2.5/linux
-
bk://kernel.bkbits.net/davem/net-2.6Linus Torvalds authored
into home.osdl.org:/home/torvalds/v2.5/linux
-
-
Linus Torvalds authored
into home.osdl.org:/home/torvalds/v2.5/akpm
-
Andrew Morton authored
From: James Bottomley <James.Bottomley@SteelEye.com> The compiler justly complains in this: unsigned int regnr = *(loff_t *) v, i; if (regnr == 0) { seq_puts(p, " "); #ifdef CONFIG_SMP for (i = 0; i < NR_CPUS; i++) #endif seq_printf(p, " CPU%02d ", i); That i is uninitialised if CONFIG_SMP is not set.
-
Andrew Morton authored
From: Ram Pai <linuxram@us.ibm.com> I have enclosed a patch that fixes a bunch of performance bugs in the readahead code. Below is a brief summary of the problems noticed and the proposed fixes with some results: Problem 1: Readahead code closes the readahead window and goes into slowread path, if a file is accessed the first time at an offset notequal to zero. In the case of databases(especially in db2), a file may not be accessed at offset 0 the first time though the i/o's are sequential. Fix to Problem 1: min = get_min_readahead(ra); orig_next_size = ra-next_size; - if (ra-next_size == 0 && offset == 0) { + if (ra-next_size == 0) { ------------------------------------------------------------------------ ------------------------------------------------------------------------ Problem 2: After fixing Problem, the readahead window still does not open up the first time, if all the pages requested are already in the page cache. This time the window closes because of pagecache hits instead of misses. To fix this we put in these changes. - check_ra_success(ra, ra-size, actual, orig_next_size); + if(!first_access) { + check_ra_success(ra, ra-size, actual, orig_next_size); + } ------------------------------------------------------------------------ ------------------------------------------------------------------------ Problem 3: In the case of large random reads, the readahead window is read in, the moment there is a hit in the active window. And it turns out that in most of the cases the readahead window gets scrapped, because the next large random read does not even touch any of the pages in that readahead window. We fixed this by introducing lazy readahead. Basically we wait till the last page in the active window gets a hit. And once the last page is hit, the readahead window is then read in. This fix gave a tremendous boost in the performance. To fix this the changes we put in were: /* * This read request is within the current window. It is time * to submit I/O for the ahead window while the application is * crunching through the current window. */ - if (ra-ahead_start == 0) { + if (ra-ahead_start == 0 && offset == (ra-start + ra-size -1)) { ------------------------------------------------------------------------ ------------------------------------------------------------------------ Problem 4: If the request page does not fall in the active window and is not the first page of the read ahead window, we scrap both the active window and the readahaed window and read in the active window. But it turns out that we read in a lot of pages in the active window based on the size of the 'projected readahead window size' (the next_size variable). And we end up using part of the active window and waste the remaining. We put in a fix where we read in just as many pages in the active window based on the number of pages used in the recent past. Again this gave us another big boost in performance and ended up beating the performance of aio patch on a DSS workload. The fix to this is: * ahead window and get some I/O underway for the new * current window. */ + if (!first_access && preoffset = ra-start && + preoffset < (ra-start + ra-size)) { + ra-size = preoffset - ra-start + 2; + } else { + ra-size = ra-next_size; ------------------------------------------------------------------------ ------------------------------------------------------------------------ Problem 5: With all the above fixes there is very low chance that the readahead window shall close. But however if it does, we found that the slow read path is really slow. Any loss of sequentiality in the slow read path is penalized heavily by closing the window back to zero. So we fixed this by decreasing the window size by one anytime we loose sequentiality and increasing in by 1 if we didn't. if (offset != ra-prev_page + 1) { - ra-size = 0; /* Not sequential */ + ra-size = ra-size?ra-size-1:0; /*Notsequential */ ------------------------------------------------------------------------ With the above set of fixes we got about 28% improvement in DSS workload which is about 5% more than what we got with the suparna's aio patch. This patch compared equivalent to suparna's aio patch with aio-stress run. It fared better than aio patch for large random io. We are yet to run a bunch of other benchmarks to evaluate this patch. We would like to get your inputs on this patch and any suggestions you may have to improve it. I have enclosed a patch with all these changes along with some changes to the comments that reflect the new behaviour. NOTE: the above patch reverts suparna's aio patch.
-
Andrew Morton authored
From: Hans Ulrich Niedermann <linux-kernel@n-dimensional.de> I've noted that 2.6.0 contains broken references to documentation. I got sufficiently annoyed chasing doc files in the wrong place that I wrote a script to check the references to documentation files. Some documentation files have moved (e.g. Documentation/modules.txt to Documentation/kbuild/modules.txt). I adapted the references with a script.
-
Andrew Morton authored
From: Nikita Danilov <Nikita@Namesys.COM> This patches reiserfs_rename. It adds ctime update of renamed object. It also fixes calculation of maximal possible transaction size during rename. Thanks to Alex Adriaanse <alex_a@caltech.edu> for finding this.
-
Andrew Morton authored
From: Nikita Danilov <Nikita@Namesys.COM> Add "commit" reiserfs mount option to override maximal transaction age. Usage: mount -treiserfs -ocommit=<time-in-seconds> /device /mountpoint Submitted by Hugang <hugang@soulinfo.com>.
-
Andrew Morton authored
From: Nikita Danilov <Nikita@Namesys.COM> Patch to teach fs/reiserfs/super.c:reiserfs_fill_super() to respect @silent parameter and to not issue any output if @silent is set. Also remove some trailing white spaces, while we are here.
-
Andrew Morton authored
From: Muli Ben-Yehuda <mulix@mulix.org> It's messy, and needs describing.
-
Andrew Morton authored
From: BlaisorBlade <blaisorblade_spam@yahoo.it> This fixes a "typo" for Kconfig-language docs.
-
Andrew Morton authored
wli points out that shrink_slab inverts the sense of shrinker->seeks: those caches which require more seeks to reestablish an object are shrunk harder. That's wrong - they should be shrunk less. So fix that up, but scaling the result so that the patch is actually a no-op at this time, because all caches use DEFAULT_SEEKS (2).
-
Andrew Morton authored
log_buf_len_setup() is called on the start_kernel->parse_args() path. It must not enable interrupts.
-
Andrew Morton authored
From: Harald Welte <laforge@gnumonks.org> [disclaimer: This was posted on the linuxppc list before, BenH asked me=20 to re-post it to lkml] The prism54 (http://prism54.org) driver for my cardbus adapter works with 2.4.x, but not 2.6.x on a Titanium G4 Powerbook IV. On 2.6.x the error message was PCI:0001:02:00.0 Resource 0 [00000000-00001fff] is unassigned After investigating differences in the PCI code of 2.4.x and 2.6.x, i noticed that 2.4.x/arc/ppc/kernel/pci.c:pcibios_update_resource() contained a couple of lines that unset the IORESOURCE_UNSET bitflag. In 2.6.x, this is handled by the generic PCI core in drivers/pci/setup-res.c:pci_update_resource() code. However, the code is missing the 'res->flags &=3D ~IORESOURCE_UNSET' part. The below fix re-adds that section from 2.4.x.=20 I'm not sure wether this belongs into the arch-independent PCI api. Anyway, on PPC it seems to be needed for certain cardbus devices. Any comments welcome.
-
Andrew Morton authored
qlogic's 16k maximum I/O size bites again. Neil says: The problems we fixed were all to do with normal IO. This one is resync IO. The problem here is that raid1 always does resync in RESYNC_BLOCK_SIZE (=64k) IOs and if the device doesn't cope - tough. The simple fix is to #define RESYNC_BLOCK_SIZE to PAGE_SIZE in md/raid1.c The better fix is to rewrite the raid1 resync code to use bio_add_page. This means we have to build the read request and the write requests at the same time, and then when a bio_add_page fails, we back-out the last page from the bios that have one too many, and then do the read followed by the writes. I have some code the nearly does this, but I haven't got it actually working yet and I am on leave until mid January. I would recommend doing fs/drivers/md/raid1.c: -#define RESYNC_BLOCK_SIZE (64*1024) +#define RESYNC_BLOCK_SIZE PAGE_SIZE for now.
-
Andrew Morton authored
From: Jon Burgess <mplayer@jburgess.uklinux.net> The iso9660 filesystem code checks that the "sbsector" option is positioned within the first 660Mb of the disk. Today the iso9660 filesystem is used on DVD's which are much bigger than 660Mb and this check prevents the sbsector option being used to specify the location of the superblock of multisession DVD's. With this check removed I can mount the second session on a DVD-R by specifying the sbsector, even though the firmware on that drive returns bogus data for the TOC. If an invalid large sector number is entered then a "request beyond end of device" error is reported elsewhere in the block code, but appears to do no damage.
-
Andrew Morton authored
From: Alan Cox <alan@redhat.com> Change by Clear Zhang of ALI
-
Andrew Morton authored
From: Bernardo Innocenti <bernie@develer.com> It needs init.h
-
Andrew Morton authored
From: Steven Cole <elenstev@mesatop.com>
-
Andrew Morton authored
From: "Seth, Rohit" <rohit.seth@intel.com> We recently covered a bug in mm/mmap.c on IA-64. While unmapping a address space, unmap_region calls free_pgtables to possibly free the pages that are used for page tables. Currently no distinction is made between freeing a region that is mapped by normal pages vs the pages that are mapped by hugepages. Architecture specific code needs to handle cases where PTEs corresponding to a region that is mapped by hugepages is properly getting unmapped. Attached please find a patch that makes the required changes in generic part of kernel. We will need to send a separate IA-64 patch to use this new semantics. Currently, so not to disturb the PPC (as that is the only arch that had ARCH_HAS_HUGEPAGE_ONLY_RANGE defined) we are mapping back the definition of new function hugetlb_free_pgtables to free_pgtables.
-
Andrew Morton authored
From: Joe Korty <joe.korty@ccur.com> We need to check whether preemption is needed after reenabling preemption in kunmap_atomic().
-
Andrew Morton authored
From: Mark Haverkamp <markh@osdl.org> This fixes a problem similar to the patch I submitted on 11/20 http://marc.theaimsgroup.com/?l=linux-kernel&m=106936439707962&w=2 In this case, though, the result is an: "Incorrect number of segments after building list" message. The macro __BVEC_START assumes a bi_idx of zero when the dm code can submit a bio with a non-zero bi_idx. The code has been tested on an 8 way / 8gb OSDL STP machine with a 197G lvm volume running dbt2 test.
-
Andrew Morton authored
From: Juergen Quade <quade@hsnr.de> I just hit a copy-paste typo in floppy.c.
-
Andrew Morton authored
From: Jim Radford <radford@indigita.com> I finally took the time to figure our why my parallel port wasn't working... here's the patch.
-
Andrew Morton authored
From: Michael Hunold <hunold@convergence.de> the Linux-on-a-CD system Knoppix has nearly all framebuffer drivers for 2.4.23 compiled in. Additionally, it surpresses most kernel messages by lowering the kernel log level. Two framebuffer drivers (clgenfb.c and hgafb.c), however, use KERN_ERR to say that their particular card has *not* been found which is very annoying. Especially the clgenfb.c driver simply says on bootup: > Couldn't find PCI device which can really confuse newbie users. I've already send a patch that fixes this for 2.4 -- Marcelo and Geert Uytterhoeven have already ack'ed it. The same change should be done for 2.6, too IMHO. The appended patch replaces two KERN_ERR with KERN_INFO and additionally makes the cirrusfb.c message more descriptive.
-
Andrew Morton authored
From: "Randy.Dunlap" <rddunlap@osdl.org> Add Intel SpeedStep zero-page memory usage doc.
-
Andrew Morton authored
From: Yoshinori Sato <ysato@users.sourceforge.jp> * using generic_ffs * optimized code
-