1. 01 Sep, 2003 3 commits
  2. 31 Aug, 2003 37 commits
    • Andrew Morton's avatar
      [PATCH] Add documentation for /proc/stat · 94dffce6
      Andrew Morton authored
      From: "Bryan O'Sullivan" <bos@serpentine.com>
      
      This patch adds documentation for the contents of the /proc/stat file.
      94dffce6
    • Andrew Morton's avatar
      [PATCH] ext3_setxattr() oops fix · 7ff78fd1
      Andrew Morton authored
      If journal_start() fails it returns an ERR_PTR.  Best not pass that into
      journal_stop().
      7ff78fd1
    • Andrew Morton's avatar
      [PATCH] tty oops fix · 2b7220f9
      Andrew Morton authored
      Ancient bug, reported by Hiroshi Inoue <inoueh@uranus.dti.ne.jp>:
      
       1. login to tty2 (not tty1)
       2. start kon (Kanji cONsole emulator, console which support
          Japanese characters)
       3. exit kon
       4. logout
      
      It oopses in the debugging function check_tty_count(), walking a list_head
      which has been list_del()'d.   Call trace is:
      
      #0  check_tty_count (tty=0x10d42000, routine=0xc817b00 ".paths") at include/asm/processor.h:583
      #1  0x022c6c00 in do_tty_hangup (data=0x10d42000) at drivers/char/tty_io.c:426
      #2  0x022c6f60 in tty_vhangup (tty=0xc817b00) at drivers/char/tty_io.c:536
      #3  0x022c6fcc in disassociate_ctty (on_exit=1) at drivers/char/tty_io.c:574
      #4  0x02127aee in do_exit (code=0) at kernel/exit.c:718
      #5  0x02127caa in do_group_exit (exit_code=0) at kernel/exit.c:796
      #6  0x02127cbc in sys_exit_group (error_code=0) at kernel/exit.c:807
      
      The tty refcount is zero, so everything seems consistent and sensible.  The
      fix just uses list_del_init() on that list_head.
      
      
      Heaven knows what the locking for tty->count is though.  Some bizarre mixture
      of BKL, tty_sem and nothing at all.
      2b7220f9
    • Andrew Morton's avatar
      [PATCH] scsi_unregister() oops fix · bfcc593b
      Andrew Morton authored
      Some drivers such as aha1542 and aic7xxx_old will call scsi_register() and
      then, if some succeeding operations fails they will call scsi_unregister(),
      without an intervening scsi_set_host().
      
      This causes an oops in scsi_put_device(), because kobj->parent is NULL.
      
      In other words, scsi_register() immediately followed by scsi_unregister()
      is guaranteed to oops.
      
      The patch makes scsi_host_dev_release() more robust against this usage
      pattern.
      bfcc593b
    • Andrew Morton's avatar
      [PATCH] handle setup_swap_extents() error in swapon. · e56ac609
      Andrew Morton authored
      From: Hugh Dickins <hugh@veritas.com>
      
      It's good that swapon fails on a tmpfs file ("swapfile has holes"), but not
      good that it then hangs up: note error from setup_swap_extents.
      e56ac609
    • Andrew Morton's avatar
      [PATCH] fix advansys.c if !CONFIG_PROC_FS · 908f8449
      Andrew Morton authored
      From: Adrian Bunk <bunk@fs.tum.de>
      
      The patch below fixes a compile error in drivers/scsi/advansys.c if
      !CONFIG_PROC_FS.
      908f8449
    • Andrew Morton's avatar
      [PATCH] HPET 2/6: boot parsing · f0265492
      Andrew Morton authored
      From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
      
      acpi boot time parsing changes to look for HPET
      f0265492
    • Andrew Morton's avatar
      [PATCH] HPET 6/6: rtc emulation · 90233e4e
      Andrew Morton authored
      From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
      
      This can be a standalone patch.  With this patch we basically try to emulate
      RTC interrupt functions in software using HPET counter 1.
      90233e4e
    • Andrew Morton's avatar
      [PATCH] HPET 5/6: timer services · 7d236b47
      Andrew Morton authored
      From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
      
      All changes required to support timer services (gettimeofday) with HPET.
      7d236b47
    • Andrew Morton's avatar
      [PATCH] HPET 4/6: Core · 1b168acb
      Andrew Morton authored
      From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
      
      All the changes required to use HPET in place of PIT as the kernel base-timer
      at IRQ 0.
      1b168acb
    • Andrew Morton's avatar
      [PATCH] HPET 3/6: makefile and config changes · 669692e4
      Andrew Morton authored
      From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
      
      Miscallaneous makefile and config changes
      669692e4
    • Andrew Morton's avatar
      [PATCH] HPET 1/6: Support for HPET based timer · 3c732c3b
      Andrew Morton authored
      From: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com>
      
      High Precision Event Timer (HPET) is next generation timer
      hardware and has various advantages over legacy 8254
      (PIT) timer, like:
      - Associated registers are mapped to memory space. So, we no
        longer require in and out on legacy ioports
      - Memory map address is reported by ACPI (and are not
        hard-coded)
      - Each timer can be configured to generate separate interrupts,
        even sharing lines with PCI devices
      - HPET has a minimum period of 100 nanosecs and is not fixed.
        Giving a flexibility of increasing the resolution in future.
      - Most current implementations has 3 counters, but in future,
        we can have as many as 32 timers per block, and 8
        HPET timer blocks (total 256 timers)
      - Can support 32bit and 64bit counting
      
      (Refer to http://www.intel.com/labs/platcomp/hpet/hpetspec.htm
       for complete specs)
      
      The patchset that follow adds support for High Precision Event
      Timer (HPET) based timer in kernel. This uses the HPET in
      LegacyReplacement mode (so that counter 0 will be tied to IRQ0,
      and counter 1 will be tied to IRQ 8). In this mode, HPET overrides
      PIT and RTC interrupt lines. The patch will enable HPET by default,
      on systems where ACPI tables reports this feature. The patch will
      have no impact on systems that do not support this feature.
      
      
      
      
      A major change from previous version is elimination of fixmap for HPET. 
      Based on Andrew Morton's suggestion, we have a new hook in init/main.c for
      late_time_init(), at which time we can use ioremap, in place of fixmap. 
      Impact on other archs: Calibrate_delay() (and hence loops_per_jiffy
      calculation) has moved down in main.c, from after time_init() to after
      kmem_cache_init().
      
      1/6 - hpet1.patch - main.c change to introduce late_time_init()
      3c732c3b
    • Andrew Morton's avatar
      [PATCH] Remove SSE2 bugs.h check · b94a6563
      Andrew Morton authored
      From: Andi Kleen <ak@muc.de>
      
      Remove some dead code.
      
      CONFIG_SSE2 hasn't been defined for some time, because everything
      SSE related is handled at runtime based on cpuid.
      b94a6563
    • Andrew Morton's avatar
      [PATCH] vmscan: zone pressure simplification and fix · d867ca5c
      Andrew Morton authored
      The zone->pressure field is supposed to record the amount of reclaim pressure
      which this zone is under.  We need this info so we know whether to unmap
      pages from pagetables right from the outset of a balance_pgdat() or
      try_to_free_pages() invokation.
      
      The problem with the current code is that the exponential average gets tugged
      around too much: as we perform the increasing-priority scan, the pressure
      metric is made artificially low by the early part of the scan.
      
      So instead what we do here is to record within the zone the scanning priority
      from the zone's previous scan.  It is defined as the priority at which the
      zone achieved the "enough pages free" state.  This prev_priority is used on
      the next scan for the do-we-need-to-be-unmapping-pages decision.
      d867ca5c
    • Andrew Morton's avatar
      [PATCH] vmscan: zone pressure calculation fix · b25bb608
      Andrew Morton authored
      Off-by-one in balance_pgdat(): `priority' can never go negative.  It causes
      the scanning priority thresholds to be quite wrong and kswapd tends to go
      berzerk when there is a lot of mapped memory around.
      b25bb608
    • Andrew Morton's avatar
      [PATCH] ipc_init() uses vmalloc too early · 322bb616
      Andrew Morton authored
      From: Andrea Arcangeli <andrea@suse.de>
      
      aka: "vmalloc allocations in ipc needs smp initialized (and vm must be
      allowed to schedule in 2.6)"
      
      In short if you change SEMMNI to 8192 the kernel will crash at boot, beause
      it tries to call vmalloc before the smp is initialized.  The reason is that
      vmalloc calls into the pte alloc code, and the fast pte alloc is tried
      first, but that reads into the pte_quicklist, that requires the cpu_data to
      be initialized (and that happens in smp_init()).
      
      the patch is obviously safe, since no piece of kernel (especially the code
      in the check_bugs and smp_init paths ;) calls into the ipc subsystem.
      
      The reason this started to trigger wasn't really that we increased SEMMNI,
      but what happend is that some IPC data structure grown, and for some reason
      the corruption due the uninitalized pte_quicklist triggers only for smp
      boxes with less than 1G (not very common anymore ;).  So it wasn't
      immediatly reproducible on all setups.
      
      2.6 doesn't suffer from the same problem, simply because 2.6 isn't using
      the quicklist anymore, but I think it would be much more correct to make
      the same change in 2.6 too, since whatever cond_resched() in the vm paths
      (and they're definitely allowed to call it), will lead to a crash since the
      init task isn't initialized and the scheduler can't be invoked yet.  (and
      2.6 already has the bigger data structures that should trigger the vmalloc
      all the time on all setups)
      322bb616
    • Andrew Morton's avatar
      [PATCH] raw driver oops fix · ab05d4ab
      Andrew Morton authored
      From: Dave Olien <dmo@osdl.org>
      
      The raw.c character device Oopses dereferencing a NULL pointer in
      bd_claim() This problem occurred after bd_claim() in block_dev.c was
      modified to "claim the whole device when a partition is claimed".
      
      raw_open() made the mistake of calling bd_claim BEFORE calling blkdev_get().
      At that time, the bdev->bd_contains field has not yet been initialized. 
      Switching the order allows blkdev_get() to initialize those fields before
      calling bd_claim().
      
      Also fixed up some error return paths:
      
      igrab() should never fail under these circumstances since the caller
      already has a reference to that inode through the bdev at that time.
      
      In the event of blkdev_get() failure or set_blocksize() failure, not all
      the work to unwind from the error was done.
      ab05d4ab
    • Andrew Morton's avatar
      [PATCH] compat ioctl_table fix · 1022068b
      Andrew Morton authored
      The arch ioctl tables are doing this:
      
      	struct foo ioctl_start[] = {
      		...
      	};
      	struct foo ioctl_end[0];
      
      and fs/compat.c expects that the table lies between &ioctl_end and
      &ioctl_start.
      
      Problem is, gcc-3.3 puts ioctl_end into bss, even if it is initialised.  It
      doesn't work.
      
      So we do away with the ioctl_end thing and add
      
      	int ioctl_table_length = ARRAY_SIZE(ioctl_start);
      
      to each architecture.
      1022068b
    • Andrew Morton's avatar
      [PATCH] mtrr cleanups · 8604173d
      Andrew Morton authored
      - Remove duplicated implementation of attrib_to_str()
      
      - Make mtrr_strings[] static to if.c
      8604173d
    • Andrew Morton's avatar
      [PATCH] make voyager work again after the cpumask_t changes · 00bd8e91
      Andrew Morton authored
      From: James Bottomley <James.Bottomley@SteelEye.com>
      
      Most is just simple fixes; however, the needless change from atomic to
      non-atomic operations in smp_invalidate_interrupt() caused me a lot of
      pain to track down since it introduced some very subtle bugs.
      
      I've also taken phys_cpu_present_map out of smp.h.  Since it
      physid_mask_t is defined in mpspec.h anyway, and contains a duplicate
      definition, I don't believe it can hurt anything.
      00bd8e91
    • Andrew Morton's avatar
      [PATCH] Fix a few declarations · 1097ca0a
      Andrew Morton authored
      extern decls in .c files are evil.  Put the send_sigio(), fcntl_setlease()
      and fcntl_getlease() into fs.h.
      1097ca0a
    • Andrew Morton's avatar
      [PATCH] Use tgid rather than pid in dnotify · 02488b12
      Andrew Morton authored
      From: Ulrich Drepper <drepper@redhat.com>
      
      I'm not entirely sure about this change.  But it seems to be necessary. 
      The dnotify code stores the PID in the file structure.  The entire process
      shares the file and any signal (is it used for that?) should be sent to the
      process (thread group), not the individual thread.  Also keep in mind that
      threads can go away while the process (and therefore file descriptor)
      remain.  And the ID of the thread can be reused.
      
      Somebody who knows this code should take a good look.
      
      (Looks right to me...)
      02488b12
    • Andrew Morton's avatar
      [PATCH] floppy driver cleanup · a19a4921
      Andrew Morton authored
      From: "Randy.Dunlap" <rddunlap@osdl.org>
      
      - use kernel.h min() and max();
      
      - C99 initializers;
      
      - Tidy up the scheule_work() callbacks (none of them take an arg)
      a19a4921
    • Andrew Morton's avatar
      [PATCH] fix arcnet printk parameter types · 77aae21d
      Andrew Morton authored
      From: "Randy.Dunlap" <rddunlap@osdl.org>
      
      fix arcnet printk parameter types
      77aae21d
    • Andrew Morton's avatar
      [PATCH] kbuild: warn if the user has old modutils · 9fff2998
      Andrew Morton authored
      From: Valdis.Kletnieks@vt.edu, Sam Ravnborg <sam@ravnborg.org>
      
      Adds an explicit check for the new modutils in the build system.
      
      Generally we should avoid these sorts of hardwired checks for the right
      versions of things, but we are still getting a significant number of problem
      reports due to people not having the new tools.  Let's help them out.
      9fff2998
    • Andrew Morton's avatar
      [PATCH] Cyclades ISA serial driver fix · 0040b222
      Andrew Morton authored
      From: "John Stoffel" <stoffel@lucent.com>
      
      Quick patch to get my 8 port Cyclades Cyclom-Y ISA card to work.
      
      (It doesn't look to be very SMP-robust, but then the 2.4 dirver probably
      isn't either).
      0040b222
    • Andrew Morton's avatar
      [PATCH] hch has moved · 6a94c0e5
      Andrew Morton authored
      From: Christoph Hellwig <hch@lst.de>
      
      I moved a while ago and I'm also not at SGI anymore.
      6a94c0e5
    • Andrew Morton's avatar
      [PATCH] AS: don't anticipate against a task's initial I/O · 66958511
      Andrew Morton authored
      From: Nick Piggin <piggin@cyberone.com.au>
      
      In the anticipatory scheduler, don't anticipate against the very first IO
      request which a process issues.
      
      This solves a very specific problem wherein a process starts, submits a
      single IO then exits.
      66958511
    • Andrew Morton's avatar
      [PATCH] evdev_ioctl does not report EV_MSC capabilities · b6117830
      Andrew Morton authored
      From: Dmitry Torokhov <dtor_core@ameritech.net>
      
      While working on my GPM patches found out that EV_MSC was forgotten...
      b6117830
    • Andrew Morton's avatar
      [PATCH] large dev_t 12/12 oops fix · 2181ea2e
      Andrew Morton authored
      From: viro@parcelfarce.linux.theplanet.co.uk
      
      On Wed, Aug 27, 2003 at 01:46:37AM -0700, Andrew Morton wrote:
      >
      > LILO seems to be oopsing in HDIO_GETGEO ioctl for some reason, in
      > generic_ide_ioctl().
      >
      > I'm not sure quite why though.  Could one of your patches affected this
      > area?
      
      The last one (fix for hd_struct handling).  The fix follows:
      2181ea2e
    • Andrew Morton's avatar
      [PATCH] remove size_t-based printk warnings · 605102e5
      Andrew Morton authored
      From: "Randy.Dunlap" <rddunlap@osdl.org>
      
      This patch removes warnings on non-matching parameter types to printk
      and incorrect function types (n_hdlc).
      605102e5
    • Andrew Morton's avatar
      [PATCH] add context switch counters · a776ac8d
      Andrew Morton authored
      From: Peter Chubb <peterc@gelato.unsw.edu.au>
      
      Currently, the context switch counters reported by getrusage() are
      always zero.  The appended patch adds fields to struct task_struct to
      count context switches, and adds code to do the counting.
      
      The patch adds 4 longs to struct task struct, and a single addition to
      the fast path in schedule().
      a776ac8d
    • Andrew Morton's avatar
      [PATCH] acpi pci_link fix · 88907397
      Andrew Morton authored
      From: Christophe Saout <christophe@saout.de>
      
      - acpi_pci_link_get_irq() returns 0 on error, not -ENODEV.
      
      - Fix mpparse.c tpyo.
      88907397
    • Andrew Morton's avatar
      [PATCH] jbd: remove uninformative printk · 5e8ab613
      Andrew Morton authored
      This printk doesn't impart any information.
      5e8ab613
    • Andrew Morton's avatar
      [PATCH] do_no_page() rss accounting fix · e0f0d9ef
      Andrew Morton authored
      From: Jaroslav Kysela <perex@suse.cz>
      
      The do_no_page() function in mm/memory.c does accounting for reserved pages
      (++mm->rss), but in zap_pte_range() we don't decrement rss if the page was
      reserved.
      
      So don't account for PageReserved pages in the rss.  (Maybe it would be
      better to fix zap_pte_range in the opposite direction..)
      e0f0d9ef
    • Andrew Morton's avatar
      [PATCH] Fix bluetooth compile warnings · 23d77265
      Andrew Morton authored
      23d77265
    • Andrew Morton's avatar
      [PATCH] knfsd nfs4 warning fixes · 371781cb
      Andrew Morton authored
      371781cb