“eff505fa1511b753b7cfb397a754b8ff4367cd55”上不存在“README.md”
  1. 13 8月, 2008 2 次提交
  2. 08 8月, 2008 1 次提交
  3. 07 8月, 2008 1 次提交
  4. 01 8月, 2008 1 次提交
  5. 31 7月, 2008 3 次提交
  6. 30 7月, 2008 2 次提交
  7. 28 7月, 2008 10 次提交
  8. 26 7月, 2008 2 次提交
  9. 25 7月, 2008 2 次提交
    • U
      flag parameters: pipe · ed8cae8b
      Ulrich Drepper 提交于
      This patch introduces the new syscall pipe2 which is like pipe but it also
      takes an additional parameter which takes a flag value.  This patch implements
      the handling of O_CLOEXEC for the flag.  I did not add support for the new
      syscall for the architectures which have a special sys_pipe implementation.  I
      think the maintainers of those archs have the chance to go with the unified
      implementation but that's up to them.
      
      The implementation introduces do_pipe_flags.  I did that instead of changing
      all callers of do_pipe because some of the callers are written in assembler.
      I would probably screw up changing the assembly code.  To avoid breaking code
      do_pipe is now a small wrapper around do_pipe_flags.  Once all callers are
      changed over to do_pipe_flags the old do_pipe function can be removed.
      
      The following test must be adjusted for architectures other than x86 and
      x86-64 and in case the syscall numbers changed.
      
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      #include <fcntl.h>
      #include <stdio.h>
      #include <unistd.h>
      #include <sys/syscall.h>
      
      #ifndef __NR_pipe2
      # ifdef __x86_64__
      #  define __NR_pipe2 293
      # elif defined __i386__
      #  define __NR_pipe2 331
      # else
      #  error "need __NR_pipe2"
      # endif
      #endif
      
      int
      main (void)
      {
        int fd[2];
        if (syscall (__NR_pipe2, fd, 0) != 0)
          {
            puts ("pipe2(0) failed");
            return 1;
          }
        for (int i = 0; i < 2; ++i)
          {
            int coe = fcntl (fd[i], F_GETFD);
            if (coe == -1)
              {
                puts ("fcntl failed");
                return 1;
              }
            if (coe & FD_CLOEXEC)
              {
                printf ("pipe2(0) set close-on-exit for fd[%d]\n", i);
                return 1;
              }
          }
        close (fd[0]);
        close (fd[1]);
      
        if (syscall (__NR_pipe2, fd, O_CLOEXEC) != 0)
          {
            puts ("pipe2(O_CLOEXEC) failed");
            return 1;
          }
        for (int i = 0; i < 2; ++i)
          {
            int coe = fcntl (fd[i], F_GETFD);
            if (coe == -1)
              {
                puts ("fcntl failed");
                return 1;
              }
            if ((coe & FD_CLOEXEC) == 0)
              {
                printf ("pipe2(O_CLOEXEC) does not set close-on-exit for fd[%d]\n", i);
                return 1;
              }
          }
        close (fd[0]);
        close (fd[1]);
      
        puts ("OK");
      
        return 0;
      }
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      Signed-off-by: NUlrich Drepper <drepper@redhat.com>
      Acked-by: NDavide Libenzi <davidel@xmailserver.org>
      Cc: Michael Kerrisk <mtk.manpages@googlemail.com>
      Cc: <linux-arch@vger.kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      ed8cae8b
    • J
      mm: drop unneeded pgdat argument from free_area_init_node() · 9109fb7b
      Johannes Weiner 提交于
      free_area_init_node() gets passed in the node id as well as the node
      descriptor.  This is redundant as the function can trivially get the node
      descriptor itself by means of NODE_DATA() and the node's id.
      
      I checked all the users and NODE_DATA() seems to be usable everywhere
      from where this function is called.
      Signed-off-by: NJohannes Weiner <hannes@saeurebad.de>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      9109fb7b
  10. 23 7月, 2008 1 次提交
  11. 19 7月, 2008 1 次提交
  12. 18 7月, 2008 6 次提交
    • D
    • R
      sparc32: fix init.c allnoconfig build error · f538f3df
      Robert Reif 提交于
      Fix allnoconfig build error.
      Signed-off-by: NRobert Reif <reif@earthlink.net>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      f538f3df
    • S
      sparc: arch/sparc/kernel/apc.c to unlocked_ioctl · ab772027
      Stoyan Gaydarov 提交于
      This changes arch/sparc/kernel/apc.c to use unlocked_ioctl
      Signed-off-by: NStoyan Gaydarov <stoyboyker@gmail.com>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      ab772027
    • S
      sparc: export openprom.h to userspace · b1a8bf92
      Sam Ravnborg 提交于
      sparc64 exports openprom.h to userspace so let sparc follow
      the example.
      As openprom.h pulled in another not-for-export vaddrs.h header
      file it required a few changes to fix the build.
      
      The definition af VMALLOC_* were moved to pgtable as this is
      where sparc64 has them.
      Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
      b1a8bf92
    • A
      sparc/mm/: possible cleanups · 50215d65
      Adrian Bunk 提交于
      This patch contains the following possible cleanups:
      - make the following needlessly global code static:
        - fault.c: force_user_fault()
        - init.c: calc_max_low_pfn()
        - init.c: pgt_cache_water[]
        - init.c: map_high_region()
        - srmmu.c: hwbug_bitmask
        - srmmu.c: srmmu_swapper_pg_dir
        - srmmu.c: srmmu_context_table
        - srmmu.c: is_hypersparc
        - srmmu.c: srmmu_cache_pagetables
        - srmmu.c: srmmu_nocache_size
        - srmmu.c: srmmu_nocache_end
        - srmmu.c: srmmu_get_nocache()
        - srmmu.c: srmmu_free_nocache()
        - srmmu.c: srmmu_early_allocate_ptable_skeleton()
        - srmmu.c: srmmu_nocache_calcsize()
        - srmmu.c: srmmu_nocache_init()
        - srmmu.c: srmmu_alloc_thread_info()
        - srmmu.c: early_pgtable_allocfail()
        - srmmu.c: srmmu_early_allocate_ptable_skeleton()
        - srmmu.c: srmmu_allocate_ptable_skeleton()
        - srmmu.c: srmmu_inherit_prom_mappings()
        - sunami.S: tsunami_copy_1page
      - remove the following unused code:
        - init.c: struct sparc_aliases
      Signed-off-by: NAdrian Bunk <bunk@kernel.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      50215d65
    • A
      sparc/kernel/: possible cleanups · c61c65cd
      Adrian Bunk 提交于
      This patch contains the following possible cleanups:
      - make the following needlessly global code static:
        - apc.c: apc_swift_idle()
        - ebus.c: ebus_blacklist_irq()
        - ebus.c: fill_ebus_child()
        - ebus.c: fill_ebus_device()
        - entry.S: syscall_is_too_hard
        - etra: tsetup_sun4c_stackchk
        - head.S: cputyp
        - head.S: prom_vector_p
        - idprom.c: Sun_Machines[]
        - ioport.c: _sparc_find_resource()
        - ioport.c: create_proc_read_entry()
        - irq.c: struct sparc_irq[]
        - rtrap.S: sun4c_rett_stackchk
        - setup.c: prom_sync_me()
        - setup.c: boot_flags
        - sun4c_irq.c: sun4c_sbint_to_irq()
        - sun4d_irq.c: sbus_tid[]
        - sun4d_irq.c: struct sbus_actions
        - sun4d_irq.c: sun4d_sbint_to_irq()
        - sun4m_irq.c: sun4m_sbint_to_irq()
        - sun4m_irq.c: sun4m_get_irqmask()
        - sun4m_irq.c: sun4m_timers
        - sun4m_smp.c: smp4m_cross_call()
        - sun4m_smp.c: smp4m_blackbox_id()
        - sun4m_smp.c: smp4m_blackbox_current()
        - time.c: sp_clock_typ
        - time.c: sbus_time_init()
        - traps.c: instruction_dump()
        - wof.S: spwin_sun4c_stackchk
        - wuf.S: sun4c_fwin_stackchk
      - #if 0 the following unused code:
        - process.c: sparc_backtrace_lock
        - process.c: __show_backtrace()
        - process.c: show_backtrace()
        - process.c: smp_show_backtrace_all_cpus()
      - remove the following unused code:
        - entry.S: __handle_exception
        - smp.c: smp_num_cpus
        - smp.c: smp_activated
        - smp.c: __cpu_number_map[]
        - smp.c: __cpu_logical_map[]
        - smp.c: bitops_spinlock
        - traps.c: trap_curbuf
        - traps.c: trapbuf[]
        - traps.c: linux_smp_still_initting
        - traps.c: thiscpus_tbr
        - traps.c: thiscpus_mid
      Signed-off-by: NAdrian Bunk <bunk@kernel.org>
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      c61c65cd
  13. 03 7月, 2008 1 次提交
  14. 04 6月, 2008 1 次提交
  15. 20 5月, 2008 1 次提交
  16. 17 5月, 2008 1 次提交
  17. 13 5月, 2008 1 次提交
  18. 12 5月, 2008 1 次提交
  19. 11 5月, 2008 2 次提交
    • D
      sparc: Fix debugger syscall restart interactions. · 28e61036
      David S. Miller 提交于
      So, forever, we've had this ptrace_signal_deliver implementation
      which tries to handle all of the nasties that can occur when the
      debugger looks at a process about to take a signal.  It's meant
      to address all of these issues inside of the kernel so that the
      debugger need not be mindful of such things.
      
      Problem is, this doesn't work.
      
      The idea was that we should do the syscall restart business first, so
      that the debugger captures that state.  Otherwise, if the debugger for
      example saves the child's state, makes the child execute something
      else, then restores the saved state, we won't handle the syscall
      restart properly because we lose the "we're in a syscall" state.
      
      The code here worked for most cases, but if the debugger actually
      passes the signal through to the child unaltered, it's possible that
      we would do a syscall restart when we shouldn't have.
      
      In particular this breaks the case of debugging a process under a gdb
      which is being debugged by yet another gdb.  gdb uses sigsuspend
      to wait for SIGCHLD of the inferior, but if gdb itself is being
      debugged by a top-level gdb we get a ptrace_stop().  The top-level gdb
      does a PTRACE_CONT with SIGCHLD to let the inferior gdb see the
      signal.  But ptrace_signal_deliver() assumed the debugger would cancel
      out the signal and therefore did a syscall restart, because the return
      error was ERESTARTNOHAND.
      
      Fix this by simply making ptrace_signal_deliver() a nop, and providing
      a way for the debugger to control system call restarting properly:
      
      1) Report a "in syscall" software bit in regs->{tstate,psr}.
         It is set early on in trap entry to a system call and is fully
         visible to the debugger via ptrace() and regsets.
      
      2) Test this bit right before doing a syscall restart.  We have
         to do a final recheck right after get_signal_to_deliver() in
         case the debugger cleared the bit during ptrace_stop().
      
      3) Clear the bit in trap return so we don't accidently try to set
         that bit in the real register.
      
      As a result we also get a ptrace_{is,clear}_syscall() for sparc32 just
      like sparc64 has.
      
      M68K has this same exact bug, and is now the only other user of the
      ptrace_signal_deliver hook.  It needs to be fixed in the same exact
      way as sparc.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      28e61036
    • D
      sparc: Fix ptrace() detach. · 986bef85
      David S. Miller 提交于
      Forever we had a PTRACE_SUNOS_DETACH which was unconditionally
      recognized, regardless of the personality of the process.
      
      Unfortunately, this value is what ended up in the GLIBC sys/ptrace.h
      header file on sparc as PTRACE_DETACH and PT_DETACH.
      
      So continue to recognize this old value.  Luckily, it doesn't conflict
      with anything we actually care about.
      Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      986bef85
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