1. 30 Jul, 2012 1 commit
  2. 20 Jul, 2011 1 commit
  3. 27 Mar, 2011 1 commit
  4. 23 Mar, 2011 1 commit
  5. 25 May, 2010 1 commit
  6. 23 Sep, 2009 1 commit
  7. 07 Apr, 2009 1 commit
  8. 04 Jan, 2009 2 commits
  9. 19 Nov, 2008 1 commit
  10. 13 Nov, 2008 1 commit
  11. 25 Jul, 2008 2 commits
  12. 29 Apr, 2008 8 commits
  13. 08 Feb, 2008 3 commits
    • Pierre Peiffer's avatar
      IPC: make struct ipc_ids static in ipc_namespace · ed2ddbf8
      Pierre Peiffer authored
      Each ipc_namespace contains a table of 3 pointers to struct ipc_ids (3 for
      msg, sem and shm, structure used to store all ipcs) These 'struct ipc_ids'
      are dynamically allocated for each icp_namespace as the ipc_namespace
      itself (for the init namespace, they are initialized with pointers to
      static variables instead)
      
      It is so for historical reason: in fact, before the use of idr to store the
      ipcs, the ipcs were stored in tables of variable length, depending of the
      maximum number of ipc allowed.  Now, these 'struct ipc_ids' have a fixed
      size.  As they are allocated in any cases for each new ipc_namespace, there
      is no gain of memory in having them allocated separately of the struct
      ipc_namespace.
      
      This patch proposes to make this table static in the struct ipc_namespace.
      Thus, we can allocate all in once and get rid of all the code needed to
      allocate and free these ipc_ids separately.
      Signed-off-by: default avatarPierre Peiffer <pierre.peiffer@bull.net>
      Acked-by: default avatarCedric Le Goater <clg@fr.ibm.com>
      Cc: Pavel Emelyanov <xemul@openvz.org>
      Cc: Nadia Derbey <Nadia.Derbey@bull.net>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ed2ddbf8
    • Pavel Emelyanov's avatar
      ipc: uninline some code from util.h · b2d75cdd
      Pavel Emelyanov authored
      ipc_lock_check_down(), ipc_lock_check() and ipcget() seem too large to be
      inline.  Besides, they give no optimization being inline as they perform
      calls inside in any case.
      
      Moving them into ipc/util.c saves 500 bytes of vmlinux and shortens IPC
      internal API.
      
      $ ./scripts/bloat-o-meter vmlinux-orig vmlinux
      add/remove: 3/2 grow/shrink: 0/10 up/down: 490/-989 (-499)
      function                                     old     new   delta
      ipcget                                         -     392    +392
      ipc_lock_check_down                            -      49     +49
      ipc_lock_check                                 -      49     +49
      sys_semget                                   119     105     -14
      sys_shmget                                   108      86     -22
      sys_msgget                                   100      78     -22
      do_msgsnd                                    665     631     -34
      do_msgrcv                                    680     644     -36
      do_shmat                                     771     733     -38
      sys_msgctl                                  1302    1229     -73
      ipcget_new                                    80       -     -80
      sys_semtimedop                              1534    1452     -82
      sys_semctl                                  2034    1922    -112
      sys_shmctl                                  1919    1765    -154
      ipcget_public                                322       -    -322
      
      The ipcget() growth is the result of gcc inlining of currently static
      ipcget_new/_public.
      Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
      Cc: Nadia Derbey <Nadia.Derbey@bull.net>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      b2d75cdd
    • Pavel Emelyanov's avatar
      namespaces: move the IPC namespace under IPC_NS option · ae5e1b22
      Pavel Emelyanov authored
      Currently the IPC namespace management code is spread over the ipc/*.c files.
      I moved this code into ipc/namespace.c file which is compiled out when needed.
      
      The linux/ipc_namespace.h file is used to store the prototypes of the
      functions in namespace.c and the stubs for NAMESPACES=n case.  This is done
      so, because the stub for copy_ipc_namespace requires the knowledge of the
      CLONE_NEWIPC flag, which is in sched.h.  But the linux/ipc.h file itself in
      included into many many .c files via the sys.h->sem.h sequence so adding the
      sched.h into it will make all these .c depend on sched.h which is not that
      good.  On the other hand the knowledge about the namespaces stuff is required
      in 4 .c files only.
      
      Besides, this patch compiles out some auxiliary functions from ipc/sem.c,
      msg.c and shm.c files.  It turned out that moving these functions into
      namespaces.c is not that easy because they use many other calls and macros
      from the original file.  Moving them would make this patch complicated.  On
      the other hand all these functions can be consolidated, so I will send a
      separate patch doing this a bit later.
      Signed-off-by: default avatarPavel Emelyanov <xemul@openvz.org>
      Acked-by: default avatarSerge Hallyn <serue@us.ibm.com>
      Cc: Cedric Le Goater <clg@fr.ibm.com>
      Cc: "Eric W. Biederman" <ebiederm@xmission.com>
      Cc: Herbert Poetzl <herbert@13thfloor.at>
      Cc: Kirill Korotaev <dev@sw.ru>
      Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      ae5e1b22
  14. 06 Feb, 2008 1 commit
  15. 19 Oct, 2007 9 commits
  16. 16 Jul, 2007 1 commit
  17. 08 May, 2007 2 commits
  18. 27 Mar, 2007 1 commit
  19. 12 Feb, 2007 2 commits