1. 07 12月, 2007 6 次提交
  2. 20 10月, 2007 1 次提交
    • S
      pid namespaces: define is_global_init() and is_container_init() · b460cbc5
      Serge E. Hallyn 提交于
      is_init() is an ambiguous name for the pid==1 check.  Split it into
      is_global_init() and is_container_init().
      
      A cgroup init has it's tsk->pid == 1.
      
      A global init also has it's tsk->pid == 1 and it's active pid namespace
      is the init_pid_ns.  But rather than check the active pid namespace,
      compare the task structure with 'init_pid_ns.child_reaper', which is
      initialized during boot to the /sbin/init process and never changes.
      
      Changelog:
      
      	2.6.22-rc4-mm2-pidns1:
      	- Use 'init_pid_ns.child_reaper' to determine if a given task is the
      	  global init (/sbin/init) process. This would improve performance
      	  and remove dependence on the task_pid().
      
      	2.6.21-mm2-pidns2:
      
      	- [Sukadev Bhattiprolu] Changed is_container_init() calls in {powerpc,
      	  ppc,avr32}/traps.c for the _exception() call to is_global_init().
      	  This way, we kill only the cgroup if the cgroup's init has a
      	  bug rather than force a kernel panic.
      
      [akpm@linux-foundation.org: fix comment]
      [sukadev@us.ibm.com: Use is_global_init() in arch/m32r/mm/fault.c]
      [bunk@stusta.de: kernel/pid.c: remove unused exports]
      [sukadev@us.ibm.com: Fix capability.c to work with threaded init]
      Signed-off-by: NSerge E. Hallyn <serue@us.ibm.com>
      Signed-off-by: NSukadev Bhattiprolu <sukadev@us.ibm.com>
      Acked-by: NPavel Emelianov <xemul@openvz.org>
      Cc: Eric W. Biederman <ebiederm@xmission.com>
      Cc: Cedric Le Goater <clg@fr.ibm.com>
      Cc: Dave Hansen <haveblue@us.ibm.com>
      Cc: Herbert Poetzel <herbert@13thfloor.at>
      Cc: Kirill Korotaev <dev@sw.ru>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      b460cbc5
  3. 17 10月, 2007 2 次提交
  4. 11 10月, 2007 5 次提交
  5. 19 7月, 2007 2 次提交
  6. 18 7月, 2007 3 次提交
  7. 17 7月, 2007 1 次提交
    • H
      generic bug: use show_regs() instead of dump_stack() · 608e2619
      Heiko Carstens 提交于
      The current generic bug implementation has a call to dump_stack() in case a
      WARN_ON(whatever) gets hit.  Since report_bug(), which calls dump_stack(),
      gets called from an exception handler we can do better: just pass the
      pt_regs structure to report_bug() and pass it to show_regs() in case of a
      warning.  This will give more debug informations like register contents,
      etc...  In addition this avoids some pointless lines that dump_stack()
      emits, since it includes a stack backtrace of the exception handler which
      is of no interest in case of a warning.  E.g.  on s390 the following lines
      are currently always present in a stack backtrace if dump_stack() gets
      called from report_bug():
      
       [<000000000001517a>] show_trace+0x92/0xe8)
       [<0000000000015270>] show_stack+0xa0/0xd0
       [<00000000000152ce>] dump_stack+0x2e/0x3c
       [<0000000000195450>] report_bug+0x98/0xf8
       [<0000000000016cc8>] illegal_op+0x1fc/0x21c
       [<00000000000227d6>] sysc_return+0x0/0x10
      Acked-by: NJeremy Fitzhardinge <jeremy@goop.org>
      Acked-by: NHaavard Skinnemoen <hskinnemoen@atmel.com>
      Cc: Andi Kleen <ak@suse.de>
      Cc: Kyle McMartin <kyle@parisc-linux.org>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      608e2619
  8. 19 5月, 2007 2 次提交
  9. 13 5月, 2007 3 次提交
  10. 10 5月, 2007 1 次提交
  11. 09 5月, 2007 5 次提交
  12. 27 4月, 2007 9 次提交