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* UBIFS: fix ubifs_compress commentaryGeert Uytterhoeven2008-10-191-2/+0
| | | | | | | | Update the comment for ubifs_compress(), which incorrectly states that it returnsa success/failure indicator. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: amend printkArtem Bityutskiy2008-10-191-1/+1
| | | | | | | | It is better to print "Reserved for root" than "Reserved pool size", because it is more obvious for users what this means. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: do not read unnecessary bytes when unpacking bitsAdrian Hunter2008-10-191-7/+38
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes the following Oops: BUG: unable to handle kernel paging request at f8d24000 IP: [<f8ff0657>] :ubifs:ubifs_unpack_bits+0xcd/0x231 *pde = 34333067 *pte = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: deflate zlib_deflate lzo lzo_decompress lzo_compress ubifs ubi nandsim nand nand_ids nand_ecc mtd nfsd lockd sunrpc exportfs [last unloaded: nand_ecc] Pid: 7450, comm: sync Not tainted (2.6.27-rc8-ubifs-2.6 #27) EIP: 0060:[<f8ff0657>] EFLAGS: 00010206 CPU: 0 EIP is at ubifs_unpack_bits+0xcd/0x231 [ubifs] EAX: 00000000 EBX: 00000000 ECX: d7e43dc0 EDX: 0000ff00 ESI: 00000004 EDI: f8d23ffe EBP: d7e43db4 ESP: d7e43d8c DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process sync (pid: 7450, ti=d7e42000 task=eb6f9530 task.ti=d7e42000) Stack: 00000400 c0103db4 dc5e8090 d7e43dc0 d7e43dc0 d7e43dc4 0000001c 00000004 f496d1e0 f8d23ffc d7e43dd4 f8ffac7e f8d23ffe 00000000 f8d23ffe f2b7af68 f496d1e0 f8d23ffc d7e43e2c f8ffadc5 00000000 0001f000 00000000 c03b10a7 Call Trace: [<c0103db4>] ? restore_nocheck_notrace+0x0/0xe [<f8ffac7e>] ? is_a_node+0x43/0x92 [ubifs] [<f8ffadc5>] ? dbg_check_ltab+0xf8/0x5c9 [ubifs] [<c03b10a7>] ? mutex_lock_nested+0x1b2/0x2a0 [<f8ffc86e>] ? ubifs_lpt_start_commit+0x49/0xecb [ubifs] [<c03b0ef3>] ? mutex_unlock+0xd/0xf [<f8fef017>] ? ubifs_tnc_start_commit+0x1cf/0xef8 [ubifs] [<f8fe65d8>] ? do_commit+0x18f/0x52d [ubifs] [<f8fe69f6>] ? ubifs_run_commit+0x80/0xca [ubifs] [<f8fd8d35>] ? ubifs_sync_fs+0xdb/0xf6 [ubifs] [<c0181a07>] ? sync_filesystems+0xc6/0x10c [<c019f279>] ? do_sync+0x3b/0x6a [<c019f2ba>] ? sys_sync+0x12/0x18 [<c0103ced>] ? sysenter_do_call+0x12/0x35 ======================= Code: 4d ec 89 01 8b 45 e8 89 10 89 d8 89 f1 d3 e8 85 c0 74 07 29 d6 83 fe 20 75 2a 89 d8 83 c4 1c 5b 5e 5f 5d c3 0f b6 57 01 c1 e2 08 <0f> b6 47 02 c1 e0 10 09 c2 0f b6 07 09 c2 0f b EIP: [<f8ff0657>] ubifs_unpack_bits+0xcd/0x231 [ubifs] SS:ESP 0068:d7e43d8c ---[ end trace 1bbb4c407a6dd816 ]--- Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: check buffer length when scanning for LPT nodesAdrian Hunter2008-09-301-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 'is_a_node()' function was reading from a buffer before checking the buffer length, resulting in an OOPS as follows: BUG: unable to handle kernel paging request at f8f74002 IP: [<f8f9783f>] :ubifs:ubifs_unpack_bits+0xca/0x233 *pde = 19e95067 *pte = 00000000 Oops: 0000 [#1] PREEMPT SMP Modules linked in: ubifs ubi mtdchar bio2mtd mtd brd video output [last unloaded: mtd] Pid: 6414, comm: integck Not tainted (2.6.27-rc6ubifs34 #23) EIP: 0060:[<f8f9783f>] EFLAGS: 00010246 CPU: 0 EIP is at ubifs_unpack_bits+0xca/0x233 [ubifs] EAX: 00000000 EBX: f6090630 ECX: d9badcfc EDX: 00000000 ESI: 00000004 EDI: f8f74002 EBP: d9badcec ESP: d9badcc0 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 Process integck (pid: 6414, ti=d9bac000 task=f727dae0 task.ti=d9bac000) Stack: 00000006 f7306240 00000002 00000000 d9badcfc d9badd00 0000001c 00000000 f6090630 f6090630 f8f74000 d9badd10 f8fa1cc9 00000000 f8f74002 00000000 f8f74002 f60fe128 f6090630 f8f74000 d9badd68 f8fa1e46 00000000 0001e000 Call Trace: [<f8fa1cc9>] ? is_a_node+0x30/0x90 [ubifs] [<f8fa1e46>] ? dbg_check_ltab+0x11d/0x5bd [ubifs] [<f8fa388f>] ? ubifs_lpt_start_commit+0x42/0xed3 [ubifs] [<c038e76a>] ? mutex_unlock+0x8/0xa [<f8f9625d>] ? ubifs_tnc_start_commit+0x1c8/0xedb [ubifs] [<f8f8d90b>] ? do_commit+0x187/0x523 [ubifs] [<c038e76a>] ? mutex_unlock+0x8/0xa [<f8f7ca17>] ? bud_wbuf_callback+0x22/0x28 [ubifs] [<f8f8dd1d>] ? ubifs_run_commit+0x76/0xc0 [ubifs] [<f8f8032c>] ? ubifs_sync_fs+0xd2/0xe6 [ubifs] [<c01a2e97>] ? vfs_quota_sync+0x0/0x17e [<c01a5ba6>] ? quota_sync_sb+0x26/0xbb [<c01a2e97>] ? vfs_quota_sync+0x0/0x17e [<c01a5c5d>] ? sync_dquots+0x22/0x12c [<c0173d1b>] ? __fsync_super+0x19/0x68 [<c0173d75>] ? fsync_super+0xb/0x19 [<c0174065>] ? generic_shutdown_super+0x22/0xe7 [<c01a31fc>] ? vfs_quota_off+0x0/0x5fd [<f8f7cf4d>] ? ubifs_kill_sb+0x31/0x35 [ubifs] [<c01741f9>] ? deactivate_super+0x5e/0x71 [<c0187610>] ? mntput_no_expire+0x82/0xe4 [<c0187905>] ? sys_umount+0x4c/0x2f6 [<c0187bc8>] ? sys_oldumount+0x19/0x1b [<c0103b71>] ? sysenter_do_call+0x12/0x25 ======================= Code: c1 f8 03 8d 04 07 8b 4d e8 89 01 8b 45 e4 89 10 89 d8 89 f1 d3 e8 85 c0 74 07 29 d6 83 fe 20 75 2a 89 d8 83 c4 20 5b 5e 5f 5d EIP: [<f8f9783f>] ubifs_unpack_bits+0xca/0x233 [ubifs] SS:ESP 0068:d9badcc0 ---[ end trace 1f02572436518c13 ]--- Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: correct condition to eliminate unecessary assignmentAdrian Hunter2008-09-301-1/+1
| | | | Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: add more debugging messages for LPTAdrian Hunter2008-09-305-13/+228
| | | | | | | Also add debugging checks for LPT size and separate out c->check_lpt_free from unrelated bitfields. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: fix bulk-read handling uptodate pagesAdrian Hunter2008-09-301-5/+11
| | | | | | | | Bulk-read skips uptodate pages but this was putting its array index out and causing it to treat subsequent pages as holes. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: improve garbage collectionAdrian Hunter2008-09-301-10/+72
| | | | | | | | | Make garbage collection try to keep data nodes from the same inode together and in ascending order. This improves performance when reading those nodes especially when bulk-read is used. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: allow for sync_fs when read-onlyAdrian Hunter2008-09-301-9/+10
| | | | | | | | sync_fs can be called even if the file system is mounted read-only. Ensure the commit is not run in that case. Reported-by: Zoltan Sogor <weth@inf.u-szeged.hu> Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: commit on sync_fsArtem Bityutskiy2008-09-301-0/+12
| | | | | | | | | Commit the journal when the FS is sync'ed. This will make statfs provide better free space report. And we anyway advice our users to sync the FS if they want better statfs report. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: correct comment for commit_on_unmountArtem Bityutskiy2008-09-301-6/+3
| | | | Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: update dbg_dump_inodeArtem Bityutskiy2008-09-301-17/+25
| | | | | | | 'dbg_dump_inode()' is quite outdated and does not print all the fileds. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: fix commentaryArtem Bityutskiy2008-09-301-2/+2
| | | | | | Znode may refer both data nodes and indexing nodes Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: fix races in bit-fieldsArtem Bityutskiy2008-09-301-8/+9
| | | | | | | | | | We cannot store bit-fields together if the processes which change them may race, unless we serialize them. Thus, move the nospc and nospc_rp bit-fields eway from the mount option/constant bit-fields, to avoid races. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: ensure data read beyond i_size is zeroed out correctlyAdrian Hunter2008-09-302-3/+8
| | | | Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: correct key comparisonAdrian Hunter2008-09-301-2/+2
| | | | | | The comparison was working, but more by accident than design. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: use bit-fields when possibleArtem Bityutskiy2008-09-301-13/+11
| | | | | | | | | The "bulk_read" and "no_chk_data_crc" have only 2 values - 0 and 1. We already have bit-fields in corresponding data structers, so make "bulk_read" and "no_chk_data_crc" bit-fields as well. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: check data CRC when in error stateArtem Bityutskiy2008-09-301-0/+1
| | | | | | | When UBIFS switches to R/O mode because of an error, it is reasonable to enable data CRC checking. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: improve znode splitting rulesAdrian Hunter2008-09-301-21/+33
| | | | | | | | | When inserting into a full znode it is split into two znodes. Because data node keys are usually consecutive, it is better to try to keep them together. This patch does a better job of that. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: add no_chk_data_crc mount optionAdrian Hunter2008-09-306-9/+61
| | | | | | | | | | | | UBIFS read performance can be improved by skipping the CRC check when data nodes are read. This option can be used if the underlying media is considered to be highly reliable. Note that CRCs are always checked for metadata. Read speed on Arm platform with OneNAND goes from 19 MiB/s to 27 MiB/s with data CRC checking disabled. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: add bulk-read facilityAdrian Hunter2008-09-306-3/+629
| | | | | | | | | | | | Some flash media are capable of reading sequentially at faster rates. UBIFS bulk-read facility is designed to take advantage of that, by reading in one go consecutive data nodes that are also located consecutively in the same LEB. Read speed on Arm platform with OneNAND goes from 17 MiB/s to 19 MiB/s. Signed-off-by: Adrian Hunter <ext-adrian.hunter@nokia.com>
* UBIFS: use an IS_ERR test rather than a NULL testJulien Brunel2008-09-301-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | In case of error, the function kthread_create returns an ERR pointer, but never returns a NULL pointer. So a NULL test that comes before an IS_ERR test should be deleted. The semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @match_bad_null_test@ expression x, E; statement S1,S2; @@ x = kthread_create(...) ... when != x = E * if (x == NULL) S1 else S2 // </smpl> Signed-off-by: Julien Brunel <brunel@diku.dk> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: inline one-line functionsArtem Bityutskiy2008-09-303-30/+27
| | | | | | | | | | | 'ubifs_get_lprops()' and 'ubifs_release_lprops()' basically wrap mutex lock and unlock. We have them because we want lprops subsystem be separate and as independent as possible. And we planned better locking rules for lprops. Anyway, because they are short, it is better to inline them. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: remove unneeded unlikely()Hirofumi Nakagawa2008-09-304-9/+9
| | | | | | | | IS_ERR() macro already has unlikely(), so do not use constructions like 'if (unlikely(IS_ERR())'. Signed-off-by: Hirofumi Nakagawa <hnakagawa@miraclelinux.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* UBIFS: add a print, fix comments and more minor stuffArtem Bityutskiy2008-09-303-24/+24
| | | | | | | | | | | | | | This commit adds a reserved pool size print and tweaks the prints to make them look nicer. It also fixes and cleans-up some comments. Additionally, it deletes some blank lines to make the code look a little nicer. In other words, nothing essential. Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
* Linux 2.6.27-rc8v2.6.27-rc8Linus Torvalds2008-09-291-1/+1
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* mm owner: fix race between swapoff and exitBalbir Singh2008-09-294-5/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's a race between mm->owner assignment and swapoff, more easily seen when task slab poisoning is turned on. The condition occurs when try_to_unuse() runs in parallel with an exiting task. A similar race can occur with callers of get_task_mm(), such as /proc/<pid>/<mmstats> or ptrace or page migration. CPU0 CPU1 try_to_unuse looks at mm = task0->mm increments mm->mm_users task 0 exits mm->owner needs to be updated, but no new owner is found (mm_users > 1, but no other task has task->mm = task0->mm) mm_update_next_owner() leaves mmput(mm) decrements mm->mm_users task0 freed dereferencing mm->owner fails The fix is to notify the subsystem via mm_owner_changed callback(), if no new owner is found, by specifying the new task as NULL. Jiri Slaby: mm->owner was set to NULL prior to calling cgroup_mm_owner_callbacks(), but must be set after that, so as not to pass NULL as old owner causing oops. Daisuke Nishimura: mm_update_next_owner() may set mm->owner to NULL, but mem_cgroup_from_task() and its callers need to take account of this situation to avoid oops. Hugh Dickins: Lockdep warning and hang below exec_mmap() when testing these patches. exit_mm() up_reads mmap_sem before calling mm_update_next_owner(), so exec_mmap() now needs to do the same. And with that repositioning, there's now no point in mm_need_new_owner() allowing for NULL mm. Reported-by: Hugh Dickins <hugh@veritas.com> Signed-off-by: Balbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Signed-off-by: Hugh Dickins <hugh@veritas.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Paul Menage <menage@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2008-09-291-1/+2
|\ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: disable apm on the olpc
| * x86: disable apm on the olpcJeremy Katz2008-09-241-1/+2
| | | | | | | | | | | | | | | | The OLPC doesn't support APM but also doesn't have DMI, so we can't detect and disable it based on DMI data. So, just disable based on machine_is_olpc() Signed-off-by: Jeremy Katz <katzj@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6Linus Torvalds2008-09-294-7/+22
|\ \ | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: cdrom: update ioctl documentation ide: note that IDE generic may prevent other drivers from attaching ide-tape: fix vendor strings Swarm: Fix crash due to missing initialization
| * | cdrom: update ioctl documentationMárton Németh2008-09-271-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Correct copy-paste problem: CDROMCLOSETRAY is about closing the tray, not opening it. Signed-off-by: Márton Németh <nm127@freemail.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide: note that IDE generic may prevent other drivers from attachingTejun Heo2008-09-271-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enabling IDE generic may prevent ATA controllers located on legacy ports from being attached to more proper driver or can prevent other controllers which share the IRQ from working. Note it in the help message. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: xerces8 <xerces8@butn.net> Cc: Jeff Garzik <jgarzik@pobox.com> Cc: stein@hermes.si [bart: s/will grab/may grab/ since Borislav has fixed PCI-case for .28] Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | ide-tape: fix vendor stringsBorislav Petkov2008-09-271-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove superfluous two bytes from each string buffer and add proper length format specifiers. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Tested-by: Mark de Wever <koraq@xs4all.nl> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| * | Swarm: Fix crash due to missing initializationRalf Baechle2008-09-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | If things are just right this will result in the hws[0]->parent being passed to ide_host_add() being non-zero and an ooops a little later. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2008-09-295-11/+95
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [SSB] Initialise dma_mask for SSB_BUSTYPE_SSB devices [MIPS] BCM47xx: Fix build error due to missing PCI functions [MIPS] IP27: Switch to dynamic interrupt routing avoding panic on error. [MIPS] au1000: Make sure GPIO value is zero or one
| * | | [SSB] Initialise dma_mask for SSB_BUSTYPE_SSB devicesAurelien Jarno2008-09-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For SSB_BUSTYPE_SSB type devices, we need to initialize dma_mask using coherent_dma_mask so that calls to dma_set_mask() succeed. It fixes the regression on the b44 driver introduced by commit f225763a7d6c92c4932dbd528437997078496fcc Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | [MIPS] BCM47xx: Fix build error due to missing PCI functionsAurelien Jarno2008-09-272-0/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch defines pcibios_map_irq() and pcibios_plat_dev_init() for the BCM47xx platform. It fixes the regression introduced by commit aab547ce0d1493d400b6468c521a0137cd8c1edf. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | [MIPS] IP27: Switch to dynamic interrupt routing avoding panic on error.Ralf Baechle2008-09-271-9/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | pcibios_map_irq is no way of returning an error but on IP27 an interrupt is possibly not routable when running out of resources. So do the interrupt routing at pcibios_enable_device time. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | | [MIPS] au1000: Make sure GPIO value is zero or oneBruno Randolf2008-09-271-2/+2
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | David Brownell <david-b@pacbell.net> wrote: > The problem is that "value" is zero-or-nonzero. > This code wrongly assumes it's zero-or-one. > Possible fix: "((!!value) << gpio)". Signed-off-by: Bruno Randolf <br1@einfach.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | | Merge branch 'linux-m32r' of git://www.linux-m32r.org/git/takata/linux-2.6_devLinus Torvalds2008-09-2910-54/+16
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'linux-m32r' of git://www.linux-m32r.org/git/takata/linux-2.6_dev: m32r/kernel/: cleanups m32r: export __ndelay m32r: export empty_zero_page m32r: don't offer CONFIG_ISA m32r: remove the unused NOHIGHMEM option
| * | | m32r/kernel/: cleanupsAdrian Bunk2008-09-277-45/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains the following cleanups: - make the following needlessly global code static: - entry.S: resume_userspace - process.c: pm_idle - process.c: default_idle() - smp.c: send_IPI_allbutself() - time.c: timer_interrupt() - time.c: struct irq0 - traps.c: set_eit_vector_entries() - traps.c: kstack_depth_to_print - traps.c: show_trace() - traps.c: die_lock - remove the following unused code: - head.S: startup_32 - process.c: hlt_counter - process.c: disable_hlt() - process.c: enable_hlt() - process.c: dump_task_regs() - remove the following variables and their usages since they were always 0: - irq.c: irq_err_count - irq.c: irq_mis_count Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
| * | | m32r: export __ndelayAdrian Bunk2008-09-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ERROR: "__ndelay" [drivers/spi/spi_bitbang.ko] undefined! Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
| * | | m32r: export empty_zero_pageAdrian Bunk2008-09-271-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ERROR: "empty_zero_page" [fs/ext4/ext4dev.ko] undefined! Reported-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
| * | | m32r: don't offer CONFIG_ISAAdrian Bunk2008-09-271-5/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As far as I know no M32R hardware actually has ISA slots. And ISA drivers don't compile on M32R. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
| * | | m32r: remove the unused NOHIGHMEM optionAdrian Bunk2008-09-271-4/+0
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | Remove the unused NOHIGHMEM option. Reviewed-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Hirokazu Takata <takata@linux-m32r.org>
* | | Merge branch 'for_linus' of ↵Linus Torvalds2008-09-297-38/+63
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/linux-2.6-kgdb: kgdboc,tty: Fix tty polling search to use name correctly kgdb, x86_64: fix PS CS SS registers in gdb serial kgdb, x86_64: gdb serial has BX and DX reversed kgdb, x86, arm, mips, powerpc: ignore user space single stepping kgdb: could not write to the last of valid memory with kgdb
| * | | kgdboc,tty: Fix tty polling search to use name correctlyJason Wessel2008-09-261-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The tty_find_polling_driver() routine did not correctly check the base part of the tty name. This can lead to kgdboc selecting an incorrect driver, as well as accepting a completely invalid tty such as "echo ffff0 > /sys/module/kgdboc/parameters/kgdboc". Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
| * | | kgdb, x86_64: fix PS CS SS registers in gdb serialJason Wessel2008-09-262-15/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On x86_64 the gdb serial register structure defines the PS (also known as eflags), CS and SS registers as 4 bytes entities. This patch splits the x86_64 regnames enum into a 32 and 64 version to account for the 32 bit entities in the gdb serial packets. Also the program counter is properly filled in for the sleeping threads. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
| * | | kgdb, x86_64: gdb serial has BX and DX reversedJason Wessel2008-09-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The BX and DX registers in the gdb serial register packet need to be flipped for gdb to receive the correct data. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
| * | | kgdb, x86, arm, mips, powerpc: ignore user space single steppingJason Wessel2008-09-265-18/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On the x86 arch, user space single step exceptions should be ignored if they occur in the kernel space, such as ptrace stepping through a system call. First check if it is kgdb that is executing a single step, then ensure it is not an accidental traversal into the user space, while in kgdb, any other time the TIF_SINGLESTEP is set, kgdb should ignore the exception. On x86, arm, mips and powerpc, the kgdb_contthread usage was inconsistent with the way single stepping is implemented in the kgdb core. The arch specific stub should always set the kgdb_cpu_doing_single_step correctly if it is single stepping. This allows kgdb to correctly process an instruction steps if ptrace happens to be requesting an instruction step over a system call. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
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