1. 30 Jul, 2012 1 commit
  2. 01 Nov, 2011 1 commit
  3. 28 May, 2011 1 commit
    • Eric W. Biederman's avatar
      ns: Wire up the setns system call · 7b21fddd
      Eric W. Biederman authored
      32bit and 64bit on x86 are tested and working.  The rest I have looked
      at closely and I can't find any problems.
      
      setns is an easy system call to wire up.  It just takes two ints so I
      don't expect any weird architecture porting problems.
      
      While doing this I have noticed that we have some architectures that are
      very slow to get new system calls.  cris seems to be the slowest where
      the last system calls wired up were preadv and pwritev.  avr32 is weird
      in that recvmmsg was wired up but never declared in unistd.h.  frv is
      behind with perf_event_open being the last syscall wired up.  On h8300
      the last system call wired up was epoll_wait.  On m32r the last system
      call wired up was fallocate.  mn10300 has recvmmsg as the last system
      call wired up.  The rest seem to at least have syncfs wired up which was
      new in the 2.6.39.
      
      v2: Most of the architecture support added by Daniel Lezcano <dlezcano@fr.ibm.com>
      v3: ported to v2.6.36-rc4 by: Eric W. Biederman <ebiederm@xmission.com>
      v4: Moved wiring up of the system call to another patch
      v5: ported to v2.6.39-rc6
      v6: rebased onto parisc-next and net-next to avoid syscall  conflicts.
      v7: ported to Linus's latest post 2.6.39 tree.
      
      >  arch/blackfin/include/asm/unistd.h     |    3 ++-
      >  arch/blackfin/mach-common/entry.S      |    1 +
      Acked-by: default avatarMike Frysinger <vapier@gentoo.org>
      
      Oh - ia64 wiring looks good.
      Acked-by: default avatarTony Luck <tony.luck@intel.com>
      Signed-off-by: default avatarEric W. Biederman <ebiederm@xmission.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      7b21fddd
  4. 05 May, 2011 1 commit
    • Anton Blanchard's avatar
      net: Add sendmmsg socket system call · 228e548e
      Anton Blanchard authored
      This patch adds a multiple message send syscall and is the send
      version of the existing recvmmsg syscall. This is heavily
      based on the patch by Arnaldo that added recvmmsg.
      
      I wrote a microbenchmark to test the performance gains of using
      this new syscall:
      
      http://ozlabs.org/~anton/junkcode/sendmmsg_test.c
      
      The test was run on a ppc64 box with a 10 Gbit network card. The
      benchmark can send both UDP and RAW ethernet packets.
      
      64B UDP
      
      batch   pkts/sec
      1       804570
      2       872800 (+ 8 %)
      4       916556 (+14 %)
      8       939712 (+17 %)
      16      952688 (+18 %)
      32      956448 (+19 %)
      64      964800 (+20 %)
      
      64B raw socket
      
      batch   pkts/sec
      1       1201449
      2       1350028 (+12 %)
      4       1461416 (+22 %)
      8       1513080 (+26 %)
      16      1541216 (+28 %)
      32      1553440 (+29 %)
      64      1557888 (+30 %)
      
      We see a 20% improvement in throughput on UDP send and 30%
      on raw socket send.
      
      [ Add sparc syscall entries. -DaveM ]
      Signed-off-by: default avatarAnton Blanchard <anton@samba.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      228e548e
  5. 30 Mar, 2011 1 commit
  6. 18 Mar, 2011 1 commit
  7. 16 Aug, 2010 1 commit
  8. 12 Mar, 2010 1 commit
    • Christoph Hellwig's avatar
      Add generic sys_ipc wrapper · baed7fc9
      Christoph Hellwig authored
      Add a generic implementation of the ipc demultiplexer syscall.  Except for
      s390 and sparc64 all implementations of the sys_ipc are nearly identical.
      
      There are slight differences in the types of the parameters, where mips
      and powerpc as the only 64-bit architectures with sys_ipc use unsigned
      long for the "third" argument as it gets casted to a pointer later, while
      it traditionally is an "int" like most other paramters.  frv goes even
      further and uses unsigned long for all parameters execept for "ptr" which
      is a pointer type everywhere.  The change from int to unsigned long for
      "third" and back to "int" for the others on frv should be fine due to the
      in-register calling conventions for syscalls (we already had a similar
      issue with the generic sys_ptrace), but I'd prefer to have the arch
      maintainers looks over this in details.
      
      Except for that h8300, m68k and m68knommu lack an impplementation of the
      semtimedop sub call which this patch adds, and various architectures have
      gets used - at least on i386 it seems superflous as the compat code on
      x86-64 and ia64 doesn't even bother to implement it.
      
      [akpm@linux-foundation.org: add sys_ipc to sys_ni.c]
      Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: Ingo Molnar <mingo@elte.hu>
      Reviewed-by: default avatarH. Peter Anvin <hpa@zytor.com>
      Cc: Al Viro <viro@zeniv.linux.org.uk>
      Cc: Arnd Bergmann <arnd@arndb.de>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: James Morris <jmorris@namei.org>
      Cc: Andreas Schwab <schwab@linux-m68k.org>
      Acked-by: default avatarJesper Nilsson <jesper.nilsson@axis.com>
      Acked-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      Acked-by: default avatarDavid Howells <dhowells@redhat.com>
      Acked-by: default avatarKyle McMartin <kyle@mcmartin.ca>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      baed7fc9
  9. 11 Dec, 2009 1 commit
  10. 14 Oct, 2009 1 commit
  11. 21 Sep, 2009 1 commit
    • Ingo Molnar's avatar
      perf: Do the big rename: Performance Counters -> Performance Events · cdd6c482
      Ingo Molnar authored
      Bye-bye Performance Counters, welcome Performance Events!
      
      In the past few months the perfcounters subsystem has grown out its
      initial role of counting hardware events, and has become (and is
      becoming) a much broader generic event enumeration, reporting, logging,
      monitoring, analysis facility.
      
      Naming its core object 'perf_counter' and naming the subsystem
      'perfcounters' has become more and more of a misnomer. With pending
      code like hw-breakpoints support the 'counter' name is less and
      less appropriate.
      
      All in one, we've decided to rename the subsystem to 'performance
      events' and to propagate this rename through all fields, variables
      and API names. (in an ABI compatible fashion)
      
      The word 'event' is also a bit shorter than 'counter' - which makes
      it slightly more convenient to write/handle as well.
      
      Thanks goes to Stephane Eranian who first observed this misnomer and
      suggested a rename.
      
      User-space tooling and ABI compatibility is not affected - this patch
      should be function-invariant. (Also, defconfigs were not touched to
      keep the size down.)
      
      This patch has been generated via the following script:
      
        FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')
      
        sed -i \
          -e 's/PERF_EVENT_/PERF_RECORD_/g' \
          -e 's/PERF_COUNTER/PERF_EVENT/g' \
          -e 's/perf_counter/perf_event/g' \
          -e 's/nb_counters/nb_events/g' \
          -e 's/swcounter/swevent/g' \
          -e 's/tpcounter_event/tp_event/g' \
          $FILES
      
        for N in $(find . -name perf_counter.[ch]); do
          M=$(echo $N | sed 's/perf_counter/perf_event/g')
          mv $N $M
        done
      
        FILES=$(find . -name perf_event.*)
      
        sed -i \
          -e 's/COUNTER_MASK/REG_MASK/g' \
          -e 's/COUNTER/EVENT/g' \
          -e 's/\<event\>/event_id/g' \
          -e 's/counter/event/g' \
          -e 's/Counter/Event/g' \
          $FILES
      
      ... to keep it as correct as possible. This script can also be
      used by anyone who has pending perfcounters patches - it converts
      a Linux kernel tree over to the new naming. We tried to time this
      change to the point in time where the amount of pending patches
      is the smallest: the end of the merge window.
      
      Namespace clashes were fixed up in a preparatory patch - and some
      stylistic fallout will be fixed up in a subsequent patch.
      
      ( NOTE: 'counters' are still the proper terminology when we deal
        with hardware registers - and these sed scripts are a bit
        over-eager in renaming them. I've undone some of that, but
        in case there's something left where 'counter' would be
        better than 'event' we can undo that on an individual basis
        instead of touching an otherwise nicely automated patch. )
      Suggested-by: default avatarStephane Eranian <eranian@google.com>
      Acked-by: default avatarPeter Zijlstra <a.p.zijlstra@chello.nl>
      Acked-by: default avatarPaul Mackerras <paulus@samba.org>
      Reviewed-by: default avatarArjan van de Ven <arjan@linux.intel.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Kyle McMartin <kyle@mcmartin.ca>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: "H. Peter Anvin" <hpa@zytor.com>
      Cc: <linux-arch@vger.kernel.org>
      LKML-Reference: <new-submission>
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      cdd6c482
  12. 04 Sep, 2009 1 commit
  13. 16 Jun, 2009 1 commit
  14. 08 Apr, 2009 1 commit
  15. 04 Dec, 2008 1 commit
  16. 27 Jul, 2008 1 commit
    • Sam Ravnborg's avatar
      sparc, sparc64: use arch/sparc/include · a439fe51
      Sam Ravnborg authored
      The majority of this patch was created by the following script:
      
      ***
      ASM=arch/sparc/include/asm
      mkdir -p $ASM
      git mv include/asm-sparc64/ftrace.h $ASM
      git rm include/asm-sparc64/*
      git mv include/asm-sparc/* $ASM
      sed -ie 's/asm-sparc64/asm/g' $ASM/*
      sed -ie 's/asm-sparc/asm/g' $ASM/*
      ***
      
      The rest was an update of the top-level Makefile to use sparc
      for header files when sparc64 is being build.
      And a small fixlet to pick up the correct unistd.h from
      sparc64 code.
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      a439fe51
  17. 17 Jul, 2008 1 commit
    • Sam Ravnborg's avatar
      sparc: join the remaining header files · f5e706ad
      Sam Ravnborg authored
      With this commit all sparc64 header files are moved to asm-sparc.
      The remaining files (71 files) were too different to be trivially
      merged so divide them up in a _32.h and a _64.h file which
      are both included from the file with no bit size.
      
      The following script were used:
      cd include
      FILES=`wc -l asm-sparc64/*h | grep -v '^     1' | cut -b 20-`
      
      for FILE in ${FILES}; do
        echo $FILE:
        BASE=`echo $FILE | cut -d '.' -f 1`
        FN32=${BASE}_32.h
        FN64=${BASE}_64.h
        GUARD=___ASM_SPARC_`echo $BASE | tr '-' '_' | tr [:lower:] [:upper:]`_H
        git mv asm-sparc/$FILE asm-sparc/$FN32
        git mv asm-sparc64/$FILE asm-sparc/$FN64
        echo git mv done
        printf "#ifndef %s\n" $GUARD                             >   asm-sparc/$FILE
        printf "#define %s\n" $GUARD                             >>  asm-sparc/$FILE
        printf "#if defined(__sparc__) && defined(__arch64__)\n" >>  asm-sparc/$FILE
        printf "#include <asm-sparc/%s>\n" $FN64                 >>  asm-sparc/$FILE
        printf "#else\n"                                         >>  asm-sparc/$FILE
        printf "#include <asm-sparc/%s>\n" $FN32                 >>  asm-sparc/$FILE
        printf "#endif\n"                                        >>  asm-sparc/$FILE
        printf "#endif\n"                                        >>  asm-sparc/$FILE
        git add asm-sparc/$FILE
        echo new file done
        printf "#include <asm-sparc/%s>\n" $FILE                 >  asm-sparc64/$FILE
        git add asm-sparc64/$FILE
        echo sparc64 file done
      done
      
      The guard contains three '_' to avoid conflict with existing guards.
      In additing the two Kbuild files are emptied to avoid breaking
      headers_* targets.
      We will reintroduce the exported header files when the necessary
      kbuild changes are merged.
      Signed-off-by: default avatarSam Ravnborg <sam@ravnborg.org>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      f5e706ad
  18. 06 Feb, 2008 1 commit
  19. 14 Dec, 2007 1 commit
  20. 19 Jul, 2007 1 commit
  21. 11 May, 2007 1 commit
  22. 08 May, 2007 1 commit
  23. 12 Mar, 2007 1 commit
  24. 10 Mar, 2007 1 commit
  25. 07 Dec, 2006 1 commit
  26. 05 Nov, 2006 1 commit
    • David S. Miller's avatar
      [SPARC]: Fix robust futex syscalls and wire up migrate_pages. · 59359ff8
      David S. Miller authored
      When I added the entries for the robust futex syscall entries, I
      forgot to bump NR_SYSCALLS.  The current situation is error-prone
      because NR_SYSCALLS lives in entry.S where the system call limit
      checks are enforced.  Move the definition to asm/unistd.h in order to
      make this mistake much more difficult to make.
      
      And wire up sys_migrate_pages since the powerpc folks implemented the
      compat wrapper for us.
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      59359ff8
  27. 02 Oct, 2006 1 commit
    • Arnd Bergmann's avatar
      [PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references · 135ab6ec
      Arnd Bergmann authored
      The last in-kernel user of errno is gone, so we should remove the definition
      and everything referring to it.  This also removes the now-unused lib/execve.c
      file that was introduced earlier.
      
      Also remove every trace of __KERNEL_SYSCALLS__ that still remained in the
      kernel.
      Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
      Cc: Andi Kleen <ak@muc.de>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
      Cc: Richard Henderson <rth@twiddle.net>
      Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Cc: Ian Molton <spyro@f2s.com>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Cc: Hirokazu Takata <takata.hirokazu@renesas.com>
      Cc: Ralf Baechle <ralf@linux-mips.org>
      Cc: Kyle McMartin <kyle@mcmartin.ca>
      Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
      Cc: Richard Curnow <rc@rc0.org.uk>
      Cc: William Lee Irwin III <wli@holomorphy.com>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
      Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp>
      Cc: Chris Zankel <chris@zankel.net>
      Cc: "Luck, Tony" <tony.luck@intel.com>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Roman Zippel <zippel@linux-m68k.org>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      135ab6ec
  28. 21 May, 2006 1 commit
  29. 03 May, 2006 1 commit
  30. 28 Apr, 2006 1 commit
  31. 24 Apr, 2006 1 commit
  32. 19 Apr, 2006 1 commit
  33. 14 Apr, 2006 1 commit
  34. 01 Apr, 2006 2 commits
  35. 13 Feb, 2006 1 commit
  36. 07 Feb, 2006 1 commit
  37. 19 Jan, 2006 1 commit
  38. 27 Jul, 2005 1 commit
  39. 10 Jul, 2005 1 commit