1. 05 1月, 2011 3 次提交
  2. 25 10月, 2010 1 次提交
  3. 18 8月, 2010 1 次提交
    • D
      Make do_execve() take a const filename pointer · d7627467
      David Howells 提交于
      Make do_execve() take a const filename pointer so that kernel_execve() compiles
      correctly on ARM:
      
      arch/arm/kernel/sys_arm.c:88: warning: passing argument 1 of 'do_execve' discards qualifiers from pointer target type
      
      This also requires the argv and envp arguments to be consted twice, once for
      the pointer array and once for the strings the array points to.  This is
      because do_execve() passes a pointer to the filename (now const) to
      copy_strings_kernel().  A simpler alternative would be to cast the filename
      pointer in do_execve() when it's passed to copy_strings_kernel().
      
      do_execve() may not change any of the strings it is passed as part of the argv
      or envp lists as they are some of them in .rodata, so marking these strings as
      const should be fine.
      
      Further kernel_execve() and sys_execve() need to be changed to match.
      
      This has been test built on x86_64, frv, arm and mips.
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      Tested-by: NRalf Baechle <ralf@linux-mips.org>
      Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d7627467
  4. 14 8月, 2010 1 次提交
  5. 30 3月, 2010 1 次提交
    • T
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking... · 5a0e3ad6
      Tejun Heo 提交于
      include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
      
      percpu.h is included by sched.h and module.h and thus ends up being
      included when building most .c files.  percpu.h includes slab.h which
      in turn includes gfp.h making everything defined by the two files
      universally available and complicating inclusion dependencies.
      
      percpu.h -> slab.h dependency is about to be removed.  Prepare for
      this change by updating users of gfp and slab facilities include those
      headers directly instead of assuming availability.  As this conversion
      needs to touch large number of source files, the following script is
      used as the basis of conversion.
      
        http://userweb.kernel.org/~tj/misc/slabh-sweep.py
      
      The script does the followings.
      
      * Scan files for gfp and slab usages and update includes such that
        only the necessary includes are there.  ie. if only gfp is used,
        gfp.h, if slab is used, slab.h.
      
      * When the script inserts a new include, it looks at the include
        blocks and try to put the new include such that its order conforms
        to its surrounding.  It's put in the include block which contains
        core kernel includes, in the same order that the rest are ordered -
        alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
        doesn't seem to be any matching order.
      
      * If the script can't find a place to put a new include (mostly
        because the file doesn't have fitting include block), it prints out
        an error message indicating which .h file needs to be added to the
        file.
      
      The conversion was done in the following steps.
      
      1. The initial automatic conversion of all .c files updated slightly
         over 4000 files, deleting around 700 includes and adding ~480 gfp.h
         and ~3000 slab.h inclusions.  The script emitted errors for ~400
         files.
      
      2. Each error was manually checked.  Some didn't need the inclusion,
         some needed manual addition while adding it to implementation .h or
         embedding .c file was more appropriate for others.  This step added
         inclusions to around 150 files.
      
      3. The script was run again and the output was compared to the edits
         from #2 to make sure no file was left behind.
      
      4. Several build tests were done and a couple of problems were fixed.
         e.g. lib/decompress_*.c used malloc/free() wrappers around slab
         APIs requiring slab.h to be added manually.
      
      5. The script was run on all .h files but without automatically
         editing them as sprinkling gfp.h and slab.h inclusions around .h
         files could easily lead to inclusion dependency hell.  Most gfp.h
         inclusion directives were ignored as stuff from gfp.h was usually
         wildly available and often used in preprocessor macros.  Each
         slab.h inclusion directive was examined and added manually as
         necessary.
      
      6. percpu.h was updated not to include slab.h.
      
      7. Build test were done on the following configurations and failures
         were fixed.  CONFIG_GCOV_KERNEL was turned off for all tests (as my
         distributed build env didn't work with gcov compiles) and a few
         more options had to be turned off depending on archs to make things
         build (like ipr on powerpc/64 which failed due to missing writeq).
      
         * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
         * powerpc and powerpc64 SMP allmodconfig
         * sparc and sparc64 SMP allmodconfig
         * ia64 SMP allmodconfig
         * s390 SMP allmodconfig
         * alpha SMP allmodconfig
         * um on x86_64 SMP allmodconfig
      
      8. percpu.h modifications were reverted so that it could be applied as
         a separate patch and serve as bisection point.
      
      Given the fact that I had only a couple of failures from tests on step
      6, I'm fairly confident about the coverage of this conversion patch.
      If there is a breakage, it's likely to be something in one of the arch
      headers which should be easily discoverable easily on most builds of
      the specific arch.
      Signed-off-by: NTejun Heo <tj@kernel.org>
      Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org>
      Cc: Ingo Molnar <mingo@redhat.com>
      Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
      5a0e3ad6
  6. 14 1月, 2010 2 次提交
  7. 24 9月, 2009 1 次提交
  8. 23 9月, 2009 2 次提交
  9. 19 6月, 2009 1 次提交
  10. 12 6月, 2009 1 次提交
  11. 03 4月, 2009 1 次提交
  12. 26 3月, 2009 4 次提交
  13. 14 1月, 2009 1 次提交
  14. 31 12月, 2008 2 次提交
  15. 15 11月, 2008 1 次提交
  16. 22 8月, 2008 1 次提交
    • J
      [S390] Fix uninitialized spinlock use · 3e972394
      Josef 'Jeff' Sipek 提交于
      Ever since commit 43ca5c3a ([S390] Convert
      monitor calls to function calls.), the kernel refused to IPL with spinlock
      debugging enabled.
      
      BUG: spinlock bad magic on CPU#0, swapper/0
       lock: 00000000003a4668, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0
      CPU: 0 Not tainted 2.6.25 #1
      Process swapper (pid: 0, task: 000000000034f958, ksp: 0000000000377d60)
      0000000000377ab8 0000000000352628 0000000000377d60 0000000000377d60
             0000000000016af4 00000000fffff7b5 0000000000377d60 0000000000000000
             0000000000000000 0000000000377a18 0000000000000009 0000000000377a18
             0000000000377a78 000000000023c920 0000000000016af4 0000000000377a18
             0000000000000005 0000000000000000 0000000000377b58 0000000000377ab8
      Call Trace:
      ([<0000000000016a60>] show_trace+0xdc/0x108)
       [<0000000000016b4e>] show_stack+0xc2/0xfc
       [<0000000000016c9a>] dump_stack+0xb2/0xc0
       [<0000000000172dd4>]
      Signed-off-by: NJosef 'Jeff' Sipek <jeffpc@josefsipek.net>
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      3e972394
  17. 19 7月, 2008 1 次提交
  18. 14 7月, 2008 1 次提交
  19. 30 4月, 2008 1 次提交
  20. 17 4月, 2008 4 次提交
    • C
      [S390] kernel: show last breaking-event-address on oops · 9e74a6b8
      Christian Borntraeger 提交于
      Newer s390 models have a breaking-event-address-recording register.
      Each time an instruction causes a break in the sequential instruction
      execution, the address is saved in that hardware register. On a program
      interrupt the address is copied to the lowcore address 272-279, which
      makes it software accessible.
      
      This patch changes the program check handler and the stack overflow
      checker to copy the value into the pt_regs argument.
      The oops output is enhanced to show the last known breaking address.
      It might give additional information if the stack trace is corrupted.
      
      The feature is only available on 64 bit.
      
      The new oops output looks like:
      
      [---------snip----------]
      Modules linked in: vmcp sunrpc qeth_l2 dm_mod qeth ccwgroup
      CPU: 2 Not tainted 2.6.24zlive-host #8
      Process modprobe (pid: 4788, task: 00000000bf3d8718, ksp: 00000000b2b0b8e0)
      Krnl PSW : 0704200180000000 000003e000020028 (vmcp_init+0x28/0xe4 [vmcp])
                 R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:2 PM:0 EA:3
      Krnl GPRS: 0000000004000002 000003e000020000 0000000000000000 0000000000000001
                 000000000015734c ffffffffffffffff 000003e0000b3b00 0000000000000000
                 000003e00007ca30 00000000b5bb5d40 00000000b5bb5800 000003e0000b3b00
                 000003e0000a2000 00000000003ecf50 00000000b2b0bd50 00000000b2b0bcb0
      Krnl Code: 000003e000020018: c0c000040ff4       larl    %r12,3e0000a2000
                 000003e00002001e: e3e0f0000024       stg     %r14,0(%r15)
                 000003e000020024: a7f40001           brc     15,3e000020026
                >000003e000020028: e310c0100004       lg      %r1,16(%r12)
                 000003e00002002e: c020000413dc       larl    %r2,3e0000a27e6
                 000003e000020034: c0a00004aee6       larl    %r10,3e0000b5e00
                 000003e00002003a: a7490001           lghi    %r4,1
                 000003e00002003e: a75900f0           lghi    %r5,240
      Call Trace:
      ([<000000000014b300>] blocking_notifier_call_chain+0x2c/0x40)
       [<000000000015735c>] sys_init_module+0x19d8/0x1b08
       [<0000000000110afc>] sysc_noemu+0x10/0x16
       [<000002000011cda2>] 0x2000011cda2
      Last Breaking-Event-Address:
       [<000003e000020024>] vmcp_init+0x24/0xe4 [vmcp]
      [---------snip----------]
      Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
      Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      9e74a6b8
    • H
      [S390] Fix a lot of sparse warnings. · a806170e
      Heiko Carstens 提交于
      Most noteable part of this commit is the new local header file entry.h
      which contains all the function declarations of functions that get only
      called from asm code or are arch internal. That way we can avoid extern
      declarations in C files.
      This is more or less the same that was done for sparc64.
      Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      a806170e
    • H
      [S390] Convert s390 to GENERIC_CLOCKEVENTS. · 5a62b192
      Heiko Carstens 提交于
      This way we get rid of s390's NO_IDLE_HZ and use the generic dynticks
      variant instead. In addition we get high resolution timers for free.
      Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      5a62b192
    • H
      [S390] Convert monitor calls to function calls. · 43ca5c3a
      Heiko Carstens 提交于
      Remove the program check generating monitor calls and use function
      calls instead. Theres is no real advantage in using monitor calls,
      but they do make debugging harder, because of all the program checks
      it generates.
      Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      43ca5c3a
  21. 05 3月, 2008 1 次提交
  22. 19 2月, 2008 1 次提交
  23. 10 2月, 2008 1 次提交
  24. 26 1月, 2008 1 次提交
  25. 05 11月, 2007 1 次提交
    • H
      [S390] Fix compile on !CONFIG_SMP. · 0d2be088
      Heiko Carstens 提交于
      Commit fae8b22d
      "[S390] Add per-cpu idle time / idle count sysfs attributes" causes
      a link error on !CONFIG_SMP.
      Fix this by adding some #ifdef's. Real fix would be to cleanup the
      code since we don't register a cpu on !CONFIG_SMP. But that would
      be quite a big patch. For the time being this is good enough.
      
      arch/s390/kernel/built-in.o: In function `do_monitor_call':
      (.text+0x50d4): undefined reference to `per_cpu__s390_idle'
      arch/s390/kernel/built-in.o: In function `cpu_idle':
      (.text+0x518c): undefined reference to `per_cpu__s390_idle'
      make: *** [.tmp_vmlinux1] Error 1
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
      0d2be088
  26. 22 10月, 2007 2 次提交
  27. 20 10月, 2007 1 次提交
  28. 30 7月, 2007 1 次提交
    • A
      Remove fs.h from mm.h · 4e950f6f
      Alexey Dobriyan 提交于
      Remove fs.h from mm.h. For this,
       1) Uninline vma_wants_writenotify(). It's pretty huge anyway.
       2) Add back fs.h or less bloated headers (err.h) to files that need it.
      
      As result, on x86_64 allyesconfig, fs.h dependencies cut down from 3929 files
      rebuilt down to 3444 (-12.3%).
      
      Cross-compile tested without regressions on my two usual configs and (sigh):
      
      alpha              arm-mx1ads        mips-bigsur          powerpc-ebony
      alpha-allnoconfig  arm-neponset      mips-capcella        powerpc-g5
      alpha-defconfig    arm-netwinder     mips-cobalt          powerpc-holly
      alpha-up           arm-netx          mips-db1000          powerpc-iseries
      arm                arm-ns9xxx        mips-db1100          powerpc-linkstation
      arm-assabet        arm-omap_h2_1610  mips-db1200          powerpc-lite5200
      arm-at91rm9200dk   arm-onearm        mips-db1500          powerpc-maple
      arm-at91rm9200ek   arm-picotux200    mips-db1550          powerpc-mpc7448_hpc2
      arm-at91sam9260ek  arm-pleb          mips-ddb5477         powerpc-mpc8272_ads
      arm-at91sam9261ek  arm-pnx4008       mips-decstation      powerpc-mpc8313_rdb
      arm-at91sam9263ek  arm-pxa255-idp    mips-e55             powerpc-mpc832x_mds
      arm-at91sam9rlek   arm-realview      mips-emma2rh         powerpc-mpc832x_rdb
      arm-ateb9200       arm-realview-smp  mips-excite          powerpc-mpc834x_itx
      arm-badge4         arm-rpc           mips-fulong          powerpc-mpc834x_itxgp
      arm-carmeva        arm-s3c2410       mips-ip22            powerpc-mpc834x_mds
      arm-cerfcube       arm-shannon       mips-ip27            powerpc-mpc836x_mds
      arm-clps7500       arm-shark         mips-ip32            powerpc-mpc8540_ads
      arm-collie         arm-simpad        mips-jazz            powerpc-mpc8544_ds
      arm-corgi          arm-spitz         mips-jmr3927         powerpc-mpc8560_ads
      arm-csb337         arm-trizeps4      mips-malta           powerpc-mpc8568mds
      arm-csb637         arm-versatile     mips-mipssim         powerpc-mpc85xx_cds
      arm-ebsa110        i386              mips-mpc30x          powerpc-mpc8641_hpcn
      arm-edb7211        i386-allnoconfig  mips-msp71xx         powerpc-mpc866_ads
      arm-em_x270        i386-defconfig    mips-ocelot          powerpc-mpc885_ads
      arm-ep93xx         i386-up           mips-pb1100          powerpc-pasemi
      arm-footbridge     ia64              mips-pb1500          powerpc-pmac32
      arm-fortunet       ia64-allnoconfig  mips-pb1550          powerpc-ppc64
      arm-h3600          ia64-bigsur       mips-pnx8550-jbs     powerpc-prpmc2800
      arm-h7201          ia64-defconfig    mips-pnx8550-stb810  powerpc-ps3
      arm-h7202          ia64-gensparse    mips-qemu            powerpc-pseries
      arm-hackkit        ia64-sim          mips-rbhma4200       powerpc-up
      arm-integrator     ia64-sn2          mips-rbhma4500       s390
      arm-iop13xx        ia64-tiger        mips-rm200           s390-allnoconfig
      arm-iop32x         ia64-up           mips-sb1250-swarm    s390-defconfig
      arm-iop33x         ia64-zx1          mips-sead            s390-up
      arm-ixp2000        m68k              mips-tb0219          sparc
      arm-ixp23xx        m68k-amiga        mips-tb0226          sparc-allnoconfig
      arm-ixp4xx         m68k-apollo       mips-tb0287          sparc-defconfig
      arm-jornada720     m68k-atari        mips-workpad         sparc-up
      arm-kafa           m68k-bvme6000     mips-wrppmc          sparc64
      arm-kb9202         m68k-hp300        mips-yosemite        sparc64-allnoconfig
      arm-ks8695         m68k-mac          parisc               sparc64-defconfig
      arm-lart           m68k-mvme147      parisc-allnoconfig   sparc64-up
      arm-lpd270         m68k-mvme16x      parisc-defconfig     um-x86_64
      arm-lpd7a400       m68k-q40          parisc-up            x86_64
      arm-lpd7a404       m68k-sun3         powerpc              x86_64-allnoconfig
      arm-lubbock        m68k-sun3x        powerpc-cell         x86_64-defconfig
      arm-lusl7200       mips              powerpc-celleb       x86_64-up
      arm-mainstone      mips-atlas        powerpc-chrp32
      Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      4e950f6f