- 15 Aug, 2008 1 commit
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Peter Zijlstra authored
David reported that his Niagra spend a little too much time in tg_shares_up(), which considering he has a large cpu count makes sense. So scale the ratelimit value with the number of cpus like we do for other controls as well. Reported-by: David Miller <davem@davemloft.net> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 14 Aug, 2008 2 commits
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Peter Zijlstra authored
When we hot-unplug a cpu and rebuild the sched-domain, all cpus will be detatched. Alex observed the case where a runqueue was stealing bandwidth from an already disabled runqueue to satisfy its own needs. Stop this by skipping over already disabled runqueues. Reported-by: Alex Nixon <alex.nixon@citrix.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Tested-by: Alex Nixon <alex.nixon@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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Zhang, Yanmin authored
With 2.6.27-rc3, I hit a kernel panic when running volanoMark on my new x86_64 machine. I also hit it with other 2.6.27-rc kernels. See below log. Basically, function walk_tg_tree and sched_create_group have a race between accessing and initiating tg->children. Below patch fixes it by moving tg->children initiation to the front of linking tg->siblings to parent->children. {----------------panic log------------} BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 IP: [<ffffffff802292ab>] walk_tg_tree+0x45/0x7f PGD 1be1c4067 PUD 1bdd8d067 PMD 0 Oops: 0000 [1] SMP CPU 11 Modules linked in: igb Pid: 22979, comm: java Not tainted 2.6.27-rc3 #1 RIP: 0010:[<ffffffff802292ab>] [<ffffffff802292ab>] walk_tg_tree+0x45/0x7f RSP: 0018:ffff8801bfbbbd18 EFLAGS: 00010083 RAX: 0000000000000000 RBX: ffff8800be0dce40 RCX: ffffffffffffffc0 RDX: ffff880102c43740 RSI: 0000000000000000 RDI: ffff8800be0dce40 RBP: ffff8801bfbbbd48 R08: ffff8800ba437bc8 R09: 0000000000001f40 R10: ffff8801be812100 R11: ffffffff805fdf44 R12: ffff880102c43740 R13: 0000000000000000 R14: ffffffff8022cf0f R15: ffffffff8022749f FS: 00000000568ac950(0063) GS:ffff8801bfa26d00(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 0000000000000000 CR3: 00000001bd848000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process java (pid: 22979, threadinfo ffff8801b145a000, task ffff8801bf18e450) Stack: 0000000000000001 ffff8800ba5c8d60 0000000000000001 0000000000000001 ffff8800bad1ccb8 0000000000000000 ffff8801bfbbbd98 ffffffff8022ed37 0000000000000001 0000000000000286 ffff8801bd5ee180 ffff8800ba437bc8 Call Trace: <IRQ> [<ffffffff8022ed37>] try_to_wake_up+0x71/0x24c [<ffffffff80247177>] autoremove_wake_function+0x9/0x2e [<ffffffff80228039>] ? __wake_up_common+0x46/0x76 [<ffffffff802296d5>] __wake_up+0x38/0x4f [<ffffffff806169cc>] tcp_v4_rcv+0x380/0x62e Signed-off-by: Zhang Yanmin <yanmin_zhang@linux.intel.com> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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- 13 Aug, 2008 1 commit
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Linus Torvalds authored
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- 12 Aug, 2008 36 commits
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
* 'for-2.6.27' of git://linux-nfs.org/~bfields/linux: fs/nfsd/export.c: Adjust error handling code involving auth_domain_put MAINTAINERS: mention lockd and sunrpc in nfs entries lockd: trivial sparse endian annotations
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git://git.kernel.org/pub/scm/linux/kernel/git/roland/infinibandLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: IB/ehca: Discard double CQE for one WR IB/ehca: Check idr_find() return value IB/ehca: Repoll CQ on invalid opcode IB/ehca: Rename goto label in ehca_poll_cq_one() IB/ehca: Update qp_state on cached modify_qp() IPoIB/cm: Use vmalloc() to allocate rx_rings
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git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds authored
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] use bcd2bin/bin2bcd [IA64] Ensure cpu0 can access per-cpu variables in early boot code
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Bernhard Walle authored
Various cleanup the drivers/firmware/memmap (after review by AKPM): - fix kdoc to conform to the standard - move kdoc from header to implementation files - remove superfluous WARN_ON() after kmalloc() - WARN_ON(x); if (!x) -> if(!WARN_ON(x)) - improve some comments Signed-off-by: Bernhard Walle <bwalle@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alexander Clouter authored
My Sun Netra T1 AC200 has one of these... bit harsh not letting me use it and all :) ========== alex@woodchuck:~$ lspci -nn 00:01.0 PCI bridge [0604]: Sun Microsystems Computer Corp. Simba Advanced PCI Bridge [108e:5000] (rev 13) 00:01.1 PCI bridge [0604]: Sun Microsystems Computer Corp. Simba Advanced PCI Bridge [108e:5000] (rev 13) 01:03.0 Non-VGA unclassified device [0000]: ALi Corporation M7101 Power Management Controller [PMU] [10b9:7101] 01:05.1 Ethernet controller [0200]: Sun Microsystems Computer Corp. RIO GEM [108e:1101] (rev 01) 01:05.3 USB Controller [0c03]: Sun Microsystems Computer Corp. RIO USB [108e:1103] (rev 01) 01:07.0 ISA bridge [0601]: ALi Corporation M1533/M1535 PCI to ISA Bridge [Aladdin IV/V/V+] [10b9:1533] 01:0c.0 Bridge [0680]: Sun Microsystems Computer Corp. RIO EBUS [108e:1100] (rev 01) 01:0c.1 Ethernet controller [0200]: Sun Microsystems Computer Corp. RIO GEM [108e:1101] (rev 01) 01:0c.3 USB Controller [0c03]: Sun Microsystems Computer Corp. RIO USB [108e:1103] (rev 01) 01:0d.0 IDE interface [0101]: ALi Corporation M5229 IDE [10b9:5229] (rev c3) 02:08.0 SCSI storage controller [0100]: LSI Logic / Symbios Logic 53C896/897 [1000:000b] (rev 07) 02:08.1 SCSI storage controller [0100]: LSI Logic / Symbios Logic 53C896/897 [1000:000b] (rev 07) ========== Signed-off-by: Alexander Clouter <alex@digriz.org.uk> Cc: Wim Van Sebroeck <wim@iguana.be> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Michael Abbott authored
The attached patch seems to already exist in a number of branches -- it keeps popping up on Google for me, and is certainly already in Debian -- but is strangely absent from mainstream. The problem appears to be that the patched file ends up as part of the target toolchain, but unfortunately the gcc constant folding doesn't appear to eliminate the __invalid_size_argument_for_IOC value early enough. Certainly compiling C++ programs which use _IO... macros as constants fails without this patch. Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix printf format type warnings (seen on alpha & ia64): Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 6 has type '__u64' Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 7 has type '__u64' Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 8 has type '__u64' Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 9 has type '__u64' Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 12 has type '__u64' Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 13 has type '__u64' Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 16 has type '__u64' Documentation/accounting/getdelays.c:206: warning: format '%15llu' expects type 'long long unsigned int', but argument 17 has type '__u64' Documentation/accounting/getdelays.c:214: warning: format '%15llu' expects type 'long long unsigned int', but argument 4 has type '__u64' Documentation/accounting/getdelays.c:214: warning: format '%15llu' expects type 'long long unsigned int', but argument 5 has type '__u64' Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 2 has type '__u64' Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 3 has type '__u64' Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 4 has type '__u64' Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 5 has type '__u64' Documentation/accounting/getdelays.c:221: warning: format '%llu' expects type 'long long unsigned int', but argument 6 has type '__u64' Documentation/accounting/getdelays.c:236: warning: 'cmd_type' may be used uninitialized in this function Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix differing signedness warning: Documentation/pcmcia/crc32hash.c:29: warning: pointer targets in passing argument 1 of 'crc32' differ in signedness Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Documentation/networking/ifenslave.c:1084: warning: pointer targets in assignment differ in signedness >From include/linux/socket.h: * 1003.1g requires sa_family_t and that sa_data is char. and from SUSv3: (http://www.opengroup.org/onlinepubs/009695399/basedefs/sys/socket.h.html) The <sys/socket.h> header shall define the sockaddr structure that includes at least the following members: sa_family_t sa_family Address family. char sa_data[] Socket address (variable-length data). <end SUSv3> Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Add MODULE_LICENSE() to DocBook/procfs_example.c since modpost complained about a missing license there. Remove tty procfs removal since the creation was deleted long ago (http://git.kernel.org/?p=linux/kernel/git/tglx/history.git;a=commitdiff;h=5ad9cb65e9b15e5b83e2dd1c10a4bcaccc4ec644). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: <J.A.K.Mouw@its.tudelft.nl> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Currently source files in the Documentation/ sub-dir can easily bit-rot since they are not generally buildable, either because they are hidden in text files or because there are no Makefile rules for them. This needs to be fixed so that the source files remain usable and good examples of code instead of bad examples. Add the ability to build source files that are in the Documentation/ dir. Add to Kconfig as "BUILD_DOCSRC" config symbol. Use "CONFIG_BUILD_DOCSRC=1 make ..." to build objects from the Documentation/ sources. Or enable BUILD_DOCSRC in the *config system. However, this symbol depends on HEADERS_CHECK since the header files need to be installed (for userspace builds). Built (using cross-tools) for x86-64, i386, alpha, ia64, sparc32, sparc64, powerpc, sh, m68k, & mips. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Harvey Harrison authored
Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Harvey Harrison authored
Collect the implementations from include/linux/byteorder/swab.h, swabb.h in swab.h The functionality provided covers: u16 swab16(u16 val) - return a byteswapped 16 bit value u32 swab32(u32 val) - return a byteswapped 32 bit value u64 swab64(u64 val) - return a byteswapped 64 bit value u32 swahw32(u32 val) - return a wordswapped 32 bit value u32 swahb32(u32 val) - return a high/low byteswapped 32 bit value Similar to above, but return swapped value from a naturally-aligned pointer u16 swab16p(u16 *p) u32 swab32p(u32 *p) u64 swab64p(u64 *p) u32 swahw32p(u32 *p) u32 swahb32p(u32 *p) Similar to above, but swap the value in-place (in-situ) void swab16s(u16 *p) void swab32s(u32 *p) void swab64s(u64 *p) void swahw32s(u32 *p) void swahb32s(u32 *p) Arches can override any of these with an optimized version by defining an inline in their asm/byteorder.h (example given for swab16()): u16 __arch_swab16() {} #define __arch_swab16 __arch_swab16 Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alexey Dobriyan authored
Switch /proc/irq/*/smp_affinity , /proc/irq/default_smp_affinity to seq_files. cat(1) reads with 1024 chunks by default, with high enough NR_CPUS, there will be -EINVAL. As side effect, there are now two less users of the ->read_proc interface. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Cc: Paul Jackson <pj@sgi.com> Cc: Mike Travis <travis@sgi.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alexey Dobriyan authored
Short enough reads from /proc/irq/*/smp_affinity return -EINVAL for no good reason. This became noticed with NR_CPUS=4096 patches, when length of printed representation of cpumask becase 1152, but cat(1) continued to read with 1024-byte chunks. bitmap_scnprintf() in good faith fills buffer, returns 1023, check returns -EINVAL. Fix it by switching to seq_file, so handler will just fill buffer and doesn't care about offsets, length, filling EOF and all this crap. For that add seq_bitmap(), and wrappers around it -- seq_cpumask() and seq_nodemask(). Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Reviewed-by: Paul Jackson <pj@sgi.com> Cc: Mike Travis <travis@sgi.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Huang Weiyi authored
Removed duplicated #include <linux/quotaops.h> in fs/reiserfs/super.c. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andrew Morton authored
The `size' argument was removed. Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Davide Libenzi <davidel@xmailserver.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Huang Weiyi authored
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Huang Weiyi authored
Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Uwe Kleine-König authored
Signed-off-by: Uwe Kleine-König <Uwe.Kleine-Koenig@digi.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Yi Yang authored
Fix wrong conversion function used by strict_strtou* Signed-off-by: Yi Yang <yi.y.yang@intel.com> Reported-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Krzysztof Helt authored
Adjust and honor the vc_scrl_erase_char for 256 and 512 character fonts. It fixes the issue with disappearing cursor during scrolling (http://bugzilla.kernel.org/show_bug.cgi?id=11258). The issue was reported and tracked by Peter Hanzel. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Reported-by: Peter Hanzel <hanzelpeter@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Haavard Skinnemoen authored
Specify how much physically continuous, DMA capable memory will be allocated at driver initialization time. This allow to create framebuffer device with larger virtual resolution. Combine with y-panning this can be used to implement double buffering acceleration method. Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Acked-by: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Haavard Skinnemoen authored
Panning in the y-direction can be done by simply changing the DMA base address. This code is already in place, but FBIOPAN_DISPLAY will currently fail because ypanstep is 0. Set ypanstep to 1 to indicate that we do support y-panning and also set the necessary acceleration flags on AT91 (AVR32 already have them.) Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jean Delvare authored
The legacy i2c model is going away soon, so switch to the new model. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jean Delvare authored
Clean up the use of structure templates in i2c-matroxfb. In this case it's more efficient to initialize the few fields we need individually. This makes i2c-matroxfb.ko 16% smaller on my system. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jean Delvare authored
I broke an error path with d03c21ec, sorry about that. The machine will crash if the i2c_attach_client() or maven_init_client() calls fail, although nobody has yet reported this happening. Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl> Cc: Petr Vandrovec <VANDROVE@vc.cvut.cz> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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MinChan Kim authored
Signed-off-by: MinChan Kim <minchan.kim@gmail.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Randy Dunlap authored
Fix preprocessor symbol so that sparse sees it and does not generate errors: drivers/misc/sgi-gru/grutables.h:286:2: error: "Unsupported architecture" drivers/misc/sgi-gru/grutables.h:286:2: error: "Unsupported architecture" drivers/misc/sgi-gru/grutables.h:286:2: error: "Unsupported architecture" drivers/misc/sgi-gru/grutables.h:286:2: error: "Unsupported architecture" drivers/misc/sgi-gru/grutlbpurge.c:185:11: error: undefined identifier 'GRUREGION' drivers/misc/sgi-gru/grutables.h:286:2: error: "Unsupported architecture" drivers/misc/sgi-gru/grutables.h:286:2: error: "Unsupported architecture" Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Jack Steiner <steiner@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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David Miller authored
Some chips appear to have the 2D engine hang during screen redraw, typically in a sequence of copyarea operations. This appear to be solved by adding a flush of the engine destination pixel cache and waiting for the engine to be idle before issuing the accel operation. The performance impact seems to be fairly small. Here is a trace on an RV370 (PCI device ID 0x5b64), it records the RBBM_STATUS register, then the source x/y, destination x/y, and width/height used for the copy: ---------------------------------------- radeonfb_prim_copyarea: STATUS[00000140] src[210:70] dst[210:60] wh[a0:10] radeonfb_prim_copyarea: STATUS[00000140] src[2b8:70] dst[2b8:60] wh[88:10] radeonfb_prim_copyarea: STATUS[00000140] src[348:70] dst[348:60] wh[40:10] radeonfb_prim_copyarea: STATUS[80020140] src[390:70] dst[390:60] wh[88:10] radeonfb_prim_copyarea: STATUS[8002613f] src[40:80] dst[40:70] wh[28:10] radeonfb_prim_copyarea: STATUS[80026139] src[a8:80] dst[a8:70] wh[38:10] radeonfb_prim_copyarea: STATUS[80026133] src[e8:80] dst[e8:70] wh[80:10] radeonfb_prim_copyarea: STATUS[8002612d] src[170:80] dst[170:70] wh[30:10] radeonfb_prim_copyarea: STATUS[80026127] src[1a8:80] dst[1a8:70] wh[8:10] radeonfb_prim_copyarea: STATUS[80026121] src[1b8:80] dst[1b8:70] wh[88:10] radeonfb_prim_copyarea: STATUS[8002611b] src[248:80] dst[248:70] wh[68:10] ---------------------------------------- When things are going fine the copies complete before the next ROP is even issued, but all of a sudden the 2D unit becomes active (bit 17 in RBBM_STATUS) and the FIFO retry (bit 13) and FIFO pipeline busy (bit 14) are set as well. The FIFO begins to backup until it becomes full. What happens next is the radeon_fifo_wait() times out, and we access the chip illegally leading to a bus error which usually wedges the box. None of this makes it to the console screen, of course :-) radeon_fifo_wait() should be modified to reset the accelerator when this timeout happens instead of programming the chip anyways. ---------------------------------------- radeonfb: FIFO Timeout ! ERROR(0): Cheetah error trap taken afsr[0010080005000000] afar[000007f900800e40] TL1(0) ERROR(0): TPC[595114] TNPC[595118] O7[459788] TSTATE[11009601] ERROR(0): TPC<radeonfb_copyarea+0xfc/0x248> ERROR(0): M_SYND(0), E_SYND(0), Privileged ERROR(0): Highest priority error (0000080000000000) "Bus error response from system bus" ERROR(0): D-cache idx[0] tag[0000000000000000] utag[0000000000000000] stag[0000000000000000] ERROR(0): D-cache data0[0000000000000000] data1[0000000000000000] data2[0000000000000000] data3[0000000000000000] ERROR(0): I-cache idx[0] tag[0000000000000000] utag[0000000000000000] stag[0000000000000000] u[0000000000000000] l[00\ ERROR(0): I-cache INSN0[0000000000000000] INSN1[0000000000000000] INSN2[0000000000000000] INSN3[0000000000000000] ERROR(0): I-cache INSN4[0000000000000000] INSN5[0000000000000000] INSN6[0000000000000000] INSN7[0000000000000000] ERROR(0): E-cache idx[800e40] tag[000000000e049f4c] ERROR(0): E-cache data0[fffff8127d300180] data1[00000000004b5384] data2[0000000000000000] data3[0000000000000000] Ker:xnel panic - not syncing: Irrecoverable deferred error trap. ---------------------------------------- Another quirk is that these copyarea calls will not happen until the first drivers/char/vt.c:redraw_screen() occurs. This will only happen if you 1) VC switch or 2) run "consolechars" or 3) unblank the screen. This seems to happen because until a redraw_screen() the screen scrolling method used by fbcon is not finalized yet. I've seen this with other fb drivers too. So if all you do is boot straight into X you will never see this bug on the relevant chips. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andy Whitcroft authored
[Andrew this should replace the previous version which did not check the returns from the region prepare for errors. This has been tested by us and Gerald and it looks good. Bah, while reviewing the locking based on your previous email I spotted that we need to check the return from the vma_needs_reservation call for allocation errors. Here is an updated patch to correct this. This passes testing here.] Signed-off-by: Andy Whitcroft <apw@shadowen.org> Tested-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Andy Whitcroft authored
In the normal case, hugetlbfs reserves hugepages at map time so that the pages exist for future faults. A struct file_region is used to track when reservations have been consumed and where. These file_regions are allocated as necessary with kmalloc() which can sleep with the mm->page_table_lock held. This is wrong and triggers may-sleep warning when PREEMPT is enabled. Updates to the underlying file_region are done in two phases. The first phase prepares the region for the change, allocating any necessary memory, without actually making the change. The second phase actually commits the change. This patch makes use of this by checking the reservations before the page_table_lock is taken; triggering any necessary allocations. This may then be safely repeated within the locks without any allocations being required. Credit to Mel Gorman for diagnosing this failure and initial versions of the patch. Signed-off-by: Andy Whitcroft <apw@shadowen.org> Tested-by: Gerald Schaefer <gerald.schaefer@de.ibm.com> Cc: Mel Gorman <mel@csn.ul.ie> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Parag Warudkar authored
Signed-off-by: Parag Warudkar <parag.warudkar@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Rabin Vincent authored
These attributes are really sysdev class attributes. The incorrect definition leads to an oops because of recent changes which make sysdev attributes use a different prototype. Based on Andi's f718cd4a ("sched: make scheduler sysfs attributes sysdev class devices") Reported-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Rabin Vincent <rabin@rab.in> Acked-by: Andi Kleen <ak@linux.intel.com> Cc: "Li, Shaohua" <shaohua.li@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Alessandro Zummo authored
Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Herbert Valerio Riedel <hvr@gnu.org> Cc: Hartley Sweeten <hartleys@visionengravers.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Yoshinori Sato authored
WARNING: vmlinux.o(.text+0x2fdf): Section mismatch in reference from the variable .LM3 to the variable .init.text:___alloc_bootmem The function .LM3() references the variable __init ___alloc_bootmem. This is often because .LM3 lacks a __init annotation or the annotation of ___alloc_bootmem is wrong. WARNING: vmlinux.o(.text+0x2ff5): Section mismatch in reference from the variable .LM4 to the variable .init.text:___alloc_bootmem The function .LM4() references the variable __init ___alloc_bootmem. This is often because .LM4 lacks a __init annotation or the annotation of ___alloc_bootmem is wrong. WARNING: vmlinux.o(.text+0x300b): Section mismatch in reference from the variable .LM5 to the variable .init.text:___alloc_bootmem The function .LM5() references the variable __init ___alloc_bootmem. This is often because .LM5 lacks a __init annotation or the annotation of ___alloc_bootmem is wrong. WARNING: vmlinux.o(.text+0x304b): Section mismatch in reference from the variable .LM10 to the variable .init.text:_free_area_init The function .LM10() references the variable __init _free_area_init. This is often because .LM10 lacks a __init annotation or the annotation of _free_area_init is wrong. WARNING: vmlinux.o(.text+0x30a3): Section mismatch in reference from the variable .LM17 to the variable .init.text:_free_all_bootmem The function .LM17() references the variable __init _free_all_bootmem. This is often because .LM17 lacks a __init annotation or the annotation of _free_all_bootmem is wrong. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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