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* cpu masks: optimize and clean up cpumask_of_cpu()Linus Torvalds2008-07-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clean up and optimize cpumask_of_cpu(), by sharing all the zero words. Instead of stupidly generating all possible i=0...NR_CPUS 2^i patterns creating a huge array of constant bitmasks, realize that the zero words can be shared. In other words, on a 64-bit architecture, we only ever need 64 of these arrays - with a different bit set in one single world (with enough zero words around it so that we can create any bitmask by just offsetting in that big array). And then we just put enough zeroes around it that we can point every single cpumask to be one of those things. So when we have 4k CPU's, instead of having 4k arrays (of 4k bits each, with one bit set in each array - 2MB memory total), we have exactly 64 arrays instead, each 8k bits in size (64kB total). And then we just point cpumask(n) to the right position (which we can calculate dynamically). Once we have the right arrays, getting "cpumask(n)" ends up being: static inline const cpumask_t *get_cpu_mask(unsigned int cpu) { const unsigned long *p = cpu_bit_bitmap[1 + cpu % BITS_PER_LONG]; p -= cpu / BITS_PER_LONG; return (const cpumask_t *)p; } This brings other advantages and simplifications as well: - we are not wasting memory that is just filled with a single bit in various different places - we don't need all those games to re-create the arrays in some dense format, because they're already going to be dense enough. if we compile a kernel for up to 4k CPU's, "wasting" that 64kB of memory is a non-issue (especially since by doing this "overlapping" trick we probably get better cache behaviour anyway). [ mingo@elte.hu: Converted Linus's mails into a commit. See: http://lkml.org/lkml/2008/7/27/156 http://lkml.org/lkml/2008/7/28/320 Also applied a family filter - which also has the side-effect of leaving out the bits where Linus calls me an idio... Oh, never mind ;-) ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Al Viro <viro@ZenIV.linux.org.uk> Cc: Mike Travis <travis@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* Merge branch 'linus' into cpus4096Ingo Molnar2008-07-28
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| * Merge branch 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds2008-07-27
| |\ | | | | | | | | | | | | | | | * 'hotfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: NFS: Ensure we call nfs_sb_deactive() after releasing the directory inode nfs_remount oops when rebooting + possible fix
| | * NFS: Ensure we call nfs_sb_deactive() after releasing the directory inodeTrond Myklebust2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | In order to avoid the "Busy inodes after unmount" error message, we need to ensure that nfs_async_unlink_release() releases the super block after the call to nfs_free_unlinkdata(). Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| | * nfs_remount oops when rebooting + possible fixMarc Zyngier2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Jeff, Trond, The commit 48b605f83c920d8daa50e43fc2c7f718e04c7bfa (NFS: implement option checking when remounting NFS filesystems (resend)) generate an Oops on my platform when rebooting while its root FS on an NFS share (NFSv3, TCP) : Unmounting local filesystems...done. Unable to handle kernel NULL pointer dereference at virtual address 00000000 pgd = c3d00000 [00000000] *pgd=a3d72031, *pte=00000000, *ppte=00000000 Internal error: Oops: 17 [#1] Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core CPU: 0 Not tainted (2.6.26-03414-g33af79d-dirty #15) PC is at nfs_remount+0x40/0x264 LR is at do_remount_sb+0x158/0x194 pc : [<c00bbf54>] lr : [<c0076c40>] psr: 60000013 sp : c2dd1e70 ip : c2dd1e98 fp : c2dd1e94 r10: 00000040 r9 : c3d17000 r8 : c3c3fc40 r7 : 00000000 r6 : 00000000 r5 : c3d2b200 r4 : 00000000 r3 : 00000003 r2 : 00000000 r1 : c2dd1e9c r0 : c3c3fc00 Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user Control: 0000397f Table: a3d00000 DAC: 00000015 Process mount (pid: 1462, stack limit = 0xc2dd0270) Stack: (0xc2dd1e70 to 0xc2dd2000) 1e60: 00000000 c3c3fc00 00000000 00000000 1e80: c3c3fc40 c3d17000 c2dd1ebc c2dd1e98 c0076c40 c00bbf20 c01c61e4 00000001 1ea0: c2dd1ebc 00000001 c3c3fc00 c2dd1ef0 c2dd1ee4 c2dd1ec0 c008c6d8 c0076af4 1ec0: 00000021 00000040 c2dd1ef0 c3d77000 c3eaa000 00000000 c2dd1f6c c2dd1ee8 1ee0: c008d1bc c008c5f8 00000000 c2dd0000 c3c0c320 c3805b38 c002064c 0001f820 1f00: 0001f810 00000001 00000001 00000000 c2dd0000 00000000 c2dd1f34 c2dd1f28 1f20: c005ead8 c005e6f8 c2dd1f44 c2dd1f38 c005eaf8 c005ead0 c2dd1f6c c2dd1f48 1f40: c008ae3c 00000000 c3d77000 0001f810 c0ed0021 c0020ca8 c2dd0000 00000000 1f60: c2dd1fa4 c2dd1f70 c008d2d4 c008d0bc 00000000 0001f810 c2dd1f9c c3eaa000 1f80: c3d17000 00000000 00000000 be8b6aa8 be8b6ad0 00000015 00000000 c2dd1fa8 1fa0: c0020b00 c008d254 00000000 be8b6aa8 0001f810 0001f820 0001f830 c0ed0021 1fc0: 00000000 be8b6aa8 be8b6ad0 00000015 00000000 be8b6ad0 0001f810 be8b6aa8 1fe0: 0001f810 be8b6964 0000aab8 40125124 60000010 0001f810 00000000 00000000 Backtrace: [<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194) r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00 r4:00000000 [<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118) r6:c2dd1ef0 r5:c3c3fc00 r4:00000001 [<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198) [<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4) [<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c) r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000 Code: 0a000086 ea000006 e3530003 8a000004 (e5923000) ---[ end trace 55e1b689cf8c8a6a ]--- ------------[ cut here ]------------ WARNING: at kernel/exit.c:966 do_exit+0x3c/0x628() Modules linked in: cpufreq_powersave cpufreq_ondemand cpufreq_userspace cpufreq_conservative ext3 jbd sd_mod pata_pcmcia libata scsi_mod pcmcia loop firmware_class pxafb cfbcopyarea cfbimgblt cfbfillrect pxa2xx_cs pxa2xx_core pcmcia_core snd_pxa2xx_ac97 snd_ac97_codec ac97_bus snd_pxa2xx_pcm snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd isp116x_hcd soundcore rtc_sa1100 snd_page_alloc pxa25x_udc usbcore rtc_ds1307 rtc_core [<c0025168>] (dump_stack+0x0/0x14) from [<c0032154>] (warn_on_slowpath+0x4c/0x68) [<c0032108>] (warn_on_slowpath+0x0/0x68) from [<c003531c>] (do_exit+0x3c/0x628) r6:0000000b r5:c3c3dc80 r4:c2dd0000 [<c00352e0>] (do_exit+0x0/0x628) from [<c0025004>] (die+0x2b0/0x30c) [<c0024d54>] (die+0x0/0x30c) from [<c00270bc>] (__do_kernel_fault+0x6c/0x80) [<c0027050>] (__do_kernel_fault+0x0/0x80) from [<c00272e0>] (do_page_fault+0x210/0x230) r7:c3fa7118 r6:c3c3dc80 r5:c3d166a8 r4:00010000 [<c00270d0>] (do_page_fault+0x0/0x230) from [<c00201ec>] (do_DataAbort+0x3c/0xa0) [<c00201b0>] (do_DataAbort+0x0/0xa0) from [<c002064c>] (__dabt_svc+0x4c/0x60) Exception stack(0xc2dd1e28 to 0xc2dd1e70) 1e20: c3c3fc00 c2dd1e9c 00000000 00000003 00000000 c3d2b200 1e40: 00000000 00000000 c3c3fc40 c3d17000 00000040 c2dd1e94 c2dd1e98 c2dd1e70 1e60: c0076c40 c00bbf54 60000013 ffffffff r8:c3c3fc40 r7:00000000 r6:00000000 r5:c2dd1e5c r4:ffffffff [<c00bbf14>] (nfs_remount+0x0/0x264) from [<c0076c40>] (do_remount_sb+0x158/0x194) r9:c3d17000 r8:c3c3fc40 r7:00000000 r6:00000000 r5:c3c3fc00 r4:00000000 [<c0076ae8>] (do_remount_sb+0x0/0x194) from [<c008c6d8>] (do_remount+0xec/0x118) r6:c2dd1ef0 r5:c3c3fc00 r4:00000001 [<c008c5ec>] (do_remount+0x0/0x118) from [<c008d1bc>] (do_mount+0x10c/0x198) [<c008d0b0>] (do_mount+0x0/0x198) from [<c008d2d4>] (sys_mount+0x8c/0xd4) [<c008d248>] (sys_mount+0x0/0xd4) from [<c0020b00>] (ret_fast_syscall+0x0/0x2c) r7:00000015 r6:be8b6ad0 r5:be8b6aa8 r4:00000000 ---[ end trace 55e1b689cf8c8a6a ]--- /etc/rc6.d/S60umountroot: line 17: 1462 Segmentation fault mount $MOUNT_FORCE_OPT -n -o remount,ro -t dummytype dummydev / 2> /dev/null The new super.c:nfs_remount function doesn't check the validity of the options/options4 pointers. Unfortunately, this seems to happend. The obvious patch seems to check the pointers, and not to do anything if the happend to be NULL. Tested on an XScale PXA255 system, latest git. Regards, M. Signed-off-by: Marc Zyngier <marc.zyngier@altran.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
| * | Merge branch 'x86/urgent' of ↵Linus Torvalds2008-07-27
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip * 'x86/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-tip: x86: fix cpu hotplug on 32bit
| | * | x86: fix cpu hotplug on 32bitThomas Gleixner2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 3e9704739daf46a8ba6593d749c67b5f7cd633d2 ("x86: boot secondary cpus through initial_code") causes the kernel to crash when a CPU is brought online after the read only sections have been write protected. The write to initial_code in do_boot_cpu() fails. Move inital_code to .cpuinit.data section. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: H. Peter Anvin <hpa@zytor.com>
| * | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2008-07-27
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] Fix shared mmap when more than two maps of the same file exist [ARM] fix VIPT/VIVT macro optimisations, add comments [ARM] 5179/1: Replace obsolete IRQT_* and __IRQT_* values with IRQ_TYPE_* [ARM] update defconfig for eseries. [ARM] PXA: squash warning in pxafb [ARM] pxa: PXA25x UDC - Fix warning during build [ARM] fix nwflash.c: 6ee8928d94841aa764aeaf645ad16daff811dc26 [ARM] fix IOP32x, IOP33x, MXC and Samsung builds [ARM] pci: provide dummy pci_get_legacy_ide_irq() [ARM] fix fls() for 64-bit arguments [ARM] fix mode for board-yl-9200.c [ARM] 5176/1: arm/Makefile: fix: ARM946T -> ARM946E
| | * | | [ARM] Fix shared mmap when more than two maps of the same file existRussell King2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The shared mmap code works fine for the test case, which only checked for two shared maps of the same file. However, three shared maps result in one mapping remaining cached, resulting in stale data being visible via that mapping. Fix this. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | [ARM] fix VIPT/VIVT macro optimisations, add commentsRussell King2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cacheflush.h was doing: ... VIVT only stuff ... VIPT only stuff ... VIVT or VIPT stuff which is clearly bogus - we would only ever use the "VIVT or VIPT" case when both VIVT and VIPT are not selected. Fix this. Add comments to each case, including noting the impossibility of correctly detecting the cache type of ARM926 and ARMv6 cores from the cache type register in the "VIVT or VIPT" case. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | [ARM] 5179/1: Replace obsolete IRQT_* and __IRQT_* values with IRQ_TYPE_*Dmitry Baryshkov2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IRQT_* and __IRQT_* were obsoleted long ago by patch [3692/1]. Remove them completely. Sed script for the reference: s/__IRQT_RISEDGE/IRQ_TYPE_EDGE_RISING/g s/__IRQT_FALEDGE/IRQ_TYPE_EDGE_FALLING/g s/__IRQT_LOWLVL/IRQ_TYPE_LEVEL_LOW/g s/__IRQT_HIGHLVL/IRQ_TYPE_LEVEL_HIGH/g s/IRQT_RISING/IRQ_TYPE_EDGE_RISING/g s/IRQT_FALLING/IRQ_TYPE_EDGE_FALLING/g s/IRQT_BOTHEDGE/IRQ_TYPE_EDGE_BOTH/g s/IRQT_LOW/IRQ_TYPE_LEVEL_LOW/g s/IRQT_HIGH/IRQ_TYPE_LEVEL_HIGH/g s/IRQT_PROBE/IRQ_TYPE_PROBE/g s/IRQT_NOEDGE/IRQ_TYPE_NONE/g Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | Merge branch 'for_rmk_13' of git://git.mnementh.co.uk/linux-2.6-imRussell King2008-07-26
| | |\ \ \
| | | * | | [ARM] update defconfig for eseries.Ian Molton2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Ian Molton <spyro@f2s.com>
| | | * | | [ARM] PXA: squash warning in pxafbIan Molton2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes a warning about using the wrong type in pxafb.c Signed-off-by: Ian Molton <spyro@f2s.com>
| | | * | | [ARM] pxa: PXA25x UDC - Fix warning during buildIan Molton2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes an unterminated ' warning building PXA25X UDC. Signed-off-by: Ian Molton <spyro@f2s.com>
| | * | | | [ARM] fix nwflash.c: 6ee8928d94841aa764aeaf645ad16daff811dc26Russell King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/char/nwflash.c: In function 'flash_read': drivers/char/nwflash.c:129: error: 'p' undeclared (first use in this function) drivers/char/nwflash.c:129: error: (Each undeclared identifier is reported only once drivers/char/nwflash.c:129: error: for each function it appears in.) drivers/char/nwflash.c:129: error: 'count' undeclared (first use in this function) drivers/char/nwflash.c:136: warning: passing argument 4 of 'simple_read_from_buffer' discards qualifiers from pointer target type Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | [ARM] fix IOP32x, IOP33x, MXC and Samsung buildsRussell King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 7444a72effa632fcd8edc566f880d96fe213c73b caused these platforms to lose their GPIOLIB configuration. Convert the missed Kconfig symbols using: sed -i s/HAVE_GPIO_LIB/ARCH_REQUIRE_GPIOLIB/ arch/arm/Kconfig arch/arm/plat-s3c24xx/Kconfig Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | [ARM] pci: provide dummy pci_get_legacy_ide_irq()Russell King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This fixes footbridge_defconfig: drivers/pnp/resource.c: In function 'pci_dev_uses_irq': drivers/pnp/resource.c:317: error: implicit declaration of function 'pci_get_legacy_ide_irq' Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | [ARM] fix fls() for 64-bit argumentsAndrew Morton2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arm's fls() is implemented as a macro, causing it to misbehave when passed 64-bit arguments. Fix. Cc: Nickolay Vinogradov <nickolay@protei.ru> Tested-by: Krzysztof Halasa <khc@pm.waw.pl> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | [ARM] fix mode for board-yl-9200.cRussell King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Xose Vazquez Perez points out that this file should not be marked executable. Reported-by: Xose Vazquez Perez <xose.vazquez@gmail.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | | | [ARM] 5176/1: arm/Makefile: fix: ARM946T -> ARM946EAdrian Bunk2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a typo introduced by commit f37f46eb1c0bd0b11c34ef06c7365658be989d80 ([ARM] nommu: add ARM946E-S core support). Reported-by: Robert P. J. Day <rpjday@crashcourse.ca> Signed-off-by: Adrian Bunk <bunk@kernel.org> Acked-by: Hyok S. Choi <hyok.choi@samsung.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | | | task IO accounting: move all IO statistics in struct task_io_accountingAndrea Righi2008-07-27
| | |_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Simplify the code of include/linux/task_io_accounting.h. It is also more reasonable to have all the task i/o-related statistics in a single struct (task_io_accounting). Signed-off-by: Andrea Righi <righi.andrea@gmail.com> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | Merge branch 'for-linus' of ↵Linus Torvalds2008-07-27
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: state userland requirements in Kconfig help firewire: avoid memleak after phy config transmit failure firewire: fw-ohci: TSB43AB22/A dualbuffer workaround firewire: queue the right number of data firewire: warn on unfinished transactions during card removal firewire: small fw_fill_request cleanup firewire: fully initialize fw_transaction before marking it pending firewire: fix race of bus reset with request transmission
| | * | | | firewire: state userland requirements in Kconfig helpStefan Richter2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| | * | | | firewire: avoid memleak after phy config transmit failureStefan Richter2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use only statically allocated data for PHY config packet transmission. With the previous incarnation, some data wouldn't be freed if the packet transmit callback was never called. A theoretical drawback now is that, in PCs with more than one card, card A may complete() for a waiter on card B. But this is highly unlikely and its impact not serious. Bus manager B may reset bus B before the PHY config went out, but the next phy config on B should be fine. However, with a timeout of 100ms, this situation is close to impossible. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| | * | | | firewire: fw-ohci: TSB43AB22/A dualbuffer workaroundStefan Richter2008-07-25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Isochronous reception in dualbuffer mode is reportedly broken with TI TSB43AB22A on x86-64. Descriptor addresses above 2G have been determined as the trigger: https://bugzilla.redhat.com/show_bug.cgi?id=435550 Two fixes are possible: - pci_set_consistent_dma_mask(pdev, DMA_31BIT_MASK); at least when IR descriptors are allocated, or - simply don't use dualbuffer. This fix implements the latter workaround. But we keep using dualbuffer on x86-32 which won't give us highmen (and thus physical addresses outside the 31bit range) in coherent DMA memory allocations. Right now we could for example also whitelist PPC32, but DMA mapping implementation details are expected to change there. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Signed-off-by: Jarod Wilson <jwilson@redhat.com>
| | * | | | firewire: queue the right number of dataJiSheng Zhang2008-07-20
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There will be 4 padding bytes in struct fw_cdev_event_response on some platforms The member:__u32 data will point to these padding bytes. While queue the response and data in complete_transaction in fw-cdev.c, it will queue like this: |response(excluding padding bytes)|4 padding bytes|4 padding bytes|data. It queue 4 extra bytes. That is to say it use "&response + sizeof(response)" while other place of kernel and userspace library use "&response + offsetof (typeof(response), data)". So it will lost the last 4 bytes of data. This patch can fix it while not changing the struct definition. Signed-off-by: JiSheng Zhang <jszhang3@mail.ustc.edu.cn> This fixes responses to outbound block read requests on 64bit architectures. Tested on i686, x86-64, and x86-64 with i686 userland, using firecontrol and gscanbus. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| | * | | | firewire: warn on unfinished transactions during card removalStefan Richter2008-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After card->done and card->work are completed, any remaining pending request would be a bug. We cannot safely complete a transaction at that point anymore. IOW card users must not drop their last fw_card reference (usually indirect references through fw_device references) before their last outbound transaction through that card was finished. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| | * | | | firewire: small fw_fill_request cleanupStefan Richter2008-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - better name for a function argument - removal of a local variable which became unnecessary after "fully initialize fw_transaction before marking it pending" Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| | * | | | firewire: fully initialize fw_transaction before marking it pendingStefan Richter2008-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In theory, card->flush_timer could already access a transaction between fw_send_request()'s spin_unlock_irqrestore and the rest of what happens in fw_send_request(). This would happen if the process which sends the request is preempted and put to sleep right after spin_unlock_irqrestore for longer than 100ms. Therefore we fill in everything in struct fw_transaction at which the flush_timer might look at before we lift the lock. To do: Ensure that the timer does not pick up the transaction before the time of the AT request event plus split transaction timeout. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| | * | | | firewire: fix race of bus reset with request transmissionStefan Richter2008-07-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reported by Jay Fenlason: A bus reset tasklet may call fw_flush_transactions and touch transactions (call their callback which will free them) while the context which submitted the transaction is still inserting it into the transmission queue. A simple solution to this problem is to _not_ "flush" the transactions because of a bus reset (complete the transcations as 'cancelled'). They will now simply time out (completed as 'cancelled' by the split-timeout timer). Jay Fenlason thought of this fix too but I was quicker to type it out. :-) Background: Contexts which access an instance of struct fw_transaction are: 1. the submitter, until it inserted the packet which is embedded in the transaction into the AT req DMA, 2. the AsReqTrContext tasklet when the request packet was acked by the responder node or transmission to the responder failed, 3. the AsRspRcvContext tasklet when it found a request which matched an incoming response, 4. the card->flush_timer when it picks up timed-out transactions to cancel them, 5. the bus reset tasklet when it cancels transactions (this access is eliminated by this patch), 6. a process which shuts down an fw_card (unregisters it from fw-core when the controller is unbound from fw-ohci) --- although in this case there shouldn't really be any transactions anymore because we wait until all card users finished their business with the card. All of these contexts run concurrently (except for the 6th, presumably). The 1st is safe against the 2nd and 3rd because of the way how a request packet is carefully submitted to the hardware. A race between 2nd and 3rd has been fixed a while ago (bug 9617). The 4th is almost safe against 1st, 2nd, 3rd; there are issues with it if huge scheduling latencies occur, to be fixed separately. The 5th looks safe against 2nd, 3rd, and 4th but is unsafe against 1st. Maybe this could be fixed with an explicit state variable in struct fw_transaction. But this would require fw_transaction to be rewritten as only dynamically allocatable object with reference counting --- not a good solution if we also can simply kill this 5th accessing context (replace it by the 4th). Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2008-07-27
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (59 commits) [SCSI] replace __FUNCTION__ with __func__ [SCSI] extend the last_sector_bug flag to cover more sectors [SCSI] qla2xxx: Update version number to 8.02.01-k6. [SCSI] qla2xxx: Additional NPIV corrections. [SCSI] qla2xxx: suppress uninitialized-var warning [SCSI] qla2xxx: use memory_read_from_buffer() [SCSI] qla2xxx: Issue proper ISP callbacks during stop-firmware. [SCSI] ch: fix ch_remove oops [SCSI] 3w-9xxx: add MSI support and misc fixes [SCSI] scsi_lib: use blk_rq_tagged in scsi_request_fn [SCSI] ibmvfc: Update driver version to 1.0.1 [SCSI] ibmvfc: Add ADISC support [SCSI] ibmvfc: Miscellaneous fixes [SCSI] ibmvfc: Fix hang on module removal [SCSI] ibmvfc: Target refcounting fixes [SCSI] ibmvfc: Reduce unnecessary log noise [SCSI] sym53c8xx: free luntbl in sym_hcb_free [SCSI] scsi_scan.c: Release mutex in error handling code [SCSI] scsi_eh_prep_cmnd should save scmd->underflow [SCSI] sd: Support for SCSI disk (SBC) Data Integrity Field ...
| | * | | | | [SCSI] replace __FUNCTION__ with __func__Harvey Harrison2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | [jejb: fixed up a ton of missed conversions. All of you are on notice this has happened, driver trees will now need to be rebased] Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Cc: SCSI List <linux-scsi@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] extend the last_sector_bug flag to cover more sectorsAlan Jenkins2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The last_sector_bug flag was added to work around a bug in certain usb cardreaders, where they would crash if a multiple sector read included the last sector. The original implementation avoids this by e.g. splitting an 8 sector read which includes the last sector into a 7 sector read, and a single sector read for the last sector. The flag is enabled for all USB devices. This revealed a second bug in other usb cardreaders, which crash when they get a multiple sector read which stops 1 sector short of the last sector. Affected hardware includes the Kingston "MobileLite" external USB cardreader and the internal USB cardreader on the Asus EeePC. Extend the last_sector_bug workaround to ensure that any access which touches the last 8 hardware sectors of the device is a single sector long. Requests are shrunk as necessary to meet this constraint. This gives us a safety margin against potential unknown or future bugs affecting multi-sector access to the end of the device. The two known bugs only affect the last 2 sectors. However, they suggest that these devices are prone to fencepost errors and that multi-sector access to the end of the device is not well tested. Popular OS's use multi-sector accesses, but they rarely read the last few sectors. Linux (with udev & vol_id) automatically reads sectors from the end of the device on insertion. It is assumed that single sector accesses are more thoroughly tested during development. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] qla2xxx: Update version number to 8.02.01-k6.Andrew Vasquez2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] qla2xxx: Additional NPIV corrections.Andrew Vasquez2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Minor fixes addressing: - rport managements during vport deletion. - acquire proper physical-ha during qla24xx_abort_command() and qla24xx_queuecommand() - do not needlessly acquire the pha for non-NPIV capable ISPs. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] qla2xxx: suppress uninitialized-var warningAndrew Morton2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/scsi/qla2xxx/qla_os.c: In function 'qla2x00_post_work': drivers/scsi/qla2xxx/qla_os.c:2158: warning: 'flags' may be used uninitialized in this function Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] qla2xxx: use memory_read_from_buffer()Akinobu Mita2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] qla2xxx: Issue proper ISP callbacks during stop-firmware.Andrew Vasquez2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As the original code would incorrectly call the non-ISP24xx/25xx callbacks during recovery, a stop-firmware failure could result in improper bit-banging of the RISC and in some cases manifest in a NMI-watchdog trigger due to the RISC not coming out of its reset state. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] ch: fix ch_remove oopsFUJITA Tomonori2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following commit causes ch_remove oops: commit 24b42566c3fcbb5a9011d1446783d0f5844ccd45 Author: Greg Kroah-Hartman <gregkh@suse.de> Date: Fri May 16 17:55:12 2008 -0700 SCSI: fix race in device_create There is a race from when a device is created with device_create() and then the drvdata is set with a call to dev_set_drvdata() in which a sysfs file could be open, yet the drvdata will be NULL, causing all sorts of bad things to happen. This patch fixes the problem by using the new function, device_create_drvdata(). It fixes the problem in all of the scsi drivers that need it. Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Doug Gilbert <dgilbert@interlog.com> Cc: James E.J. Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de> The problem is ch_probe stores ch's private data at a wrong place. We need to store it at scsi_device->sdev_gendev but the above patch stores it at device struct that device_create_drvdata returns. So we hit an oops when ch_remove accesses scsi_device->sdev_gendev->driver_data, which is NULL. Actually, there wasn't a race because ch doesn't create sysfs files with device struct that device_create returns. This patch puts back dev_set_drvdata() to set ch's private data properly. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] 3w-9xxx: add MSI support and misc fixesadam radford2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch for the 3w-9xxx scsi driver applies on top of the BKL-pushdown changes in -git9. This patch does the following: - Increase max AENs drained to 256. - Add MSI support and "use_msi" module parameter. - Fix bug in twa_get_param() on 4GB+. - Use pci_resource_len() for ioremap(). Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] scsi_lib: use blk_rq_tagged in scsi_request_fnMike Christie2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I goofed and did not see the macro for checking if a request is tagged. This patch has us use blk_rq_tagged instead of digging into the req->tag. Patch was made over scsi-misc. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] ibmvfc: Update driver version to 1.0.1Brian King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Update driver version to 1.0.1. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] ibmvfc: Add ADISC supportBrian King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add an ADISC to the target discovery job in order to sanity check whether or not we need to re-login to the target. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] ibmvfc: Miscellaneous fixesBrian King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Properly setup the size of the async event queue. This fixes a bug where async events were not getting processed by the driver. Setup target_id field in the driver's target struct so that target sysfs attributes work for multiple targets. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] ibmvfc: Fix hang on module removalBrian King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If certain ELS events are received during module removal, after the kthread is stopped, the rmmod can hang. This fixes the ibmvfc driver so that ELS events during rmmod are ignored by stopping all device activity prior to killing the kthread and also changes reinitialization to not attempt a reinit if the adapter has been taken offline. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] ibmvfc: Target refcounting fixesBrian King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix up some refcounting on the ibmvfc drivers internal target struct when accessed through some sysfs attributes. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] ibmvfc: Reduce unnecessary log noiseBrian King2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reduces some unnecessary log noise by removing a printk during host port state query and increasing the log level required to log received async events. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] sym53c8xx: free luntbl in sym_hcb_freeMike Anderson2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch frees the luntbl dma area in sym_hcb_free if allocated. Since the luntbl is part of a larger dma coherent area not freeing the luntbl kept a 64k dma coherent area previous allocated through dma_alloc_coherent allocated. This prevented a DLPAR remove IO operation from completing successfully. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Cc: Matthew Wilcox <matthew@wil.cx> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| | * | | | | [SCSI] scsi_scan.c: Release mutex in error handling codeJulia Lawall2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mutex is released on a successful return, so it would seem that it should be released on an error return as well. The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @@ expression l; @@ mutex_lock(l); ... when != mutex_unlock(l) when any when strict ( if (...) { ... when != mutex_unlock(l) + mutex_unlock(l); return ...; } | mutex_unlock(l); ) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-26 13:40:47 -0500