1. 18 8月, 2011 4 次提交
    • J
      perf tools: Fix build against newer glibc · 195bcbf5
      Josh Boyer 提交于
      Upstream glibc commit 295e904 added a definition for __attribute_const__
      to cdefs.h.  This causes the following error when building perf:
      
      util/include/linux/compiler.h:8:0: error: "__attribute_const__"
      redefined [-Werror] /usr/include/sys/cdefs.h:226:0: note: this is the
      location of the previous definition
      
      Wrap __attribute_const__ in #ifndef as we do for __always_inline.
      
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Link: http://lkml.kernel.org/r/20110818113720.GL2227@zod.bos.redhat.comSigned-off-by: NJosh Boyer <jwboyer@redhat.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      195bcbf5
    • S
      perf tools: Fix error handling of unknown events · 777d1d71
      Stephane Eranian 提交于
      There was a problem with the parse_events() code not printing the
      correct event name when an event was unknown and starting with an 'r'.
      The source of the problem was the way raw notation was parsed.
      
      Without the patch:
      	$ perf stat -e retired_foo
      	invalid event modifier: 'tired_foo'
      
      With the patch:
      	$ perf stat -e retired_foo
      	invalid or unsupported event: 'retired_foo'
      
      This also covers the case where the name of the event was not printed at
      all when perf was linked with libpfm4.
      
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/20110723021043.GA20178@quadSigned-off-by: NStephane Eranian <eranian@google.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      777d1d71
    • S
      perf evlist: Fix missing event name init for default event · cc2d86b0
      Stephane Eranian 提交于
      When no event is given to perf record, perf top, a default event is
      initialized (cycles). However, perf_evlist__add_default() was not
      setting the symbolic name for the event. Perf top worked simply because
      it was reconstructing the name from the event code. But it should not
      have to do this. This patch initializes the evsel->name field properly.
      
      This second version improves the code flow on the non error path.
      
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/20110607161936.GA8163@quadSigned-off-by: NStephane Eranian <eranian@google.com>
      [committer note: Use perf_evsel__delete() instead of plain free()]
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      cc2d86b0
    • S
      perf list: Fix exit value · 77e57297
      Stephane Eranian 提交于
      This patch fixes an issue with the exit value of perf list:
      
      $ perf list; echo $?
      129
      
      perf list returns an error exit code even though there is no error.
      
      There was a stray exit(129) in print_events(). This patch removes this
      exit().
      
      $ perf list; echo $?
      0
      
      $ perf list hw sw
        cpu-cycles OR cycles                               [Hardware event]
        stalled-cycles-frontend OR idle-cycles-frontend    [Hardware event]
        stalled-cycles-backend OR idle-cycles-backend      [Hardware event]
        instructions                                       [Hardware event]
        cache-references                                   [Hardware event]
        cache-misses                                       [Hardware event]
        branch-instructions OR branches                    [Hardware event]
        branch-misses                                      [Hardware event]
        bus-cycles                                         [Hardware event]
      
        cpu-clock                                          [Software event]
        task-clock                                         [Software event]
        page-faults OR faults                              [Software event]
        minor-faults                                       [Software event]
        major-faults                                       [Software event]
        context-switches OR cs                             [Software event]
        cpu-migrations OR migrations                       [Software event]
        alignment-faults                                   [Software event]
        emulation-faults                                   [Software event]
      $ echo $?
      0
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/20110523123917.GA31060@quadSigned-off-by: NStephane Eranian <eranian@google.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      77e57297
  2. 14 8月, 2011 1 次提交
  3. 12 8月, 2011 18 次提交
    • M
      perf probe: Filter out redundant inline-instances · 3f4460a2
      Masami Hiramatsu 提交于
      With gcc4.6, some instances of concrete inlined function looks redundant
      and broken, because it appears inside of a concrete instance and its
      call_file and call_line are same as the original abstruct's decl_file
      and decl_line respectively.
      
      e.g.
       [  d1aa]    subprogram
                   external             (flag) Yes
                   name                 (strp) "add_timer"
                   decl_file            (data1) 2		;here is original
                   decl_line            (data2) 847		;line and file
                   prototyped           (flag) Yes
                   inline               (data1) inlined (1)
                   sibling              (ref4) [  d1c6]
      ...
       [ 11d84]    subprogram
                   abstract_origin      (ref4) [  d1aa]	; concrete instance
                   low_pc               (addr) .text+0x000000000000246f <add_timer>
                   high_pc              (addr) .text+0x000000000000248b <mod_timer_pending>
                   frame_base           (block1)               [   0] call_frame_cfa
                   sibling              (ref4) [ 11dd9]
       [ 11d9f]      formal_parameter
                     abstract_origin      (ref4) [  d1b9]
                     location             (data4) location list [  701b]
       [ 11da8]      inlined_subroutine
                     abstract_origin      (ref4) [  d1aa]	; redundant instance
                     low_pc               (addr) .text+0x000000000000247e <add_timer+0xf>
                     high_pc              (addr) .text+0x0000000000002480 <add_timer+0x11>
                     call_file            (data1) 2		; call line and file
                     call_line            (data2) 847		; are same as above
      
      Those redundant instances leads unwilling results;
      
      e.g. find probe points inside of functions even if we specify
      a function entry as below;
      
      $ perf probe -V add_timer
      Available variables at add_timer
              @<add_timer+0>
                      struct timer_list*      timer
              @<add_timer+15>
                      (No matched variables)
      
      So, this filters out those redundant instances based on call-site and
      decl-site information.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110317.19900.59525.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      3f4460a2
    • M
      perf probe: Search concrete out-of-line instances · db0d2c64
      Masami Hiramatsu 提交于
      gcc 4.6 generates a concrete out-of-line instance when there is a
      function which is implicitly inlined somewhere but also has its own
      instance. The concrete out-of-line instance means that it has an
      abstract origin of the function which is referred by not only
      inlined-subroutines but also a concrete subprogram.
      
      Since current dwarf_func_inline_instances() can find only instances of
      inlined-subroutines, this introduces new die_walk_instances() to find
      both of subprogram and inlined-subroutines.
      
      e.g. without this,
      Available variables at sched_group_rt_period
              @<cpu_rt_period_read_uint+9>
                      struct task_group*      tg
      
      perf probe failed to find actual subprogram instance of
      sched_group_rt_period().
      
      With this,
      
      Available variables at sched_group_rt_period
              @<cpu_rt_period_read_uint+9>
                      struct task_group*      tg
              @<sched_group_rt_period+0>
                      struct task_group*      tg
      
      Now it found the sched_group_rt_period() itself.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110311.19900.63997.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      db0d2c64
    • M
      perf probe: Avoid searching variables in intermediate scopes · f182e3e1
      Masami Hiramatsu 提交于
      Fix variable searching logic to search one in inner than local scope or
      global(CU) scope. In the other words, skip searching in intermediate
      scopes.
      
      e.g., in the following code,
      
      int var1;
      
      void inline infunc(int i)
      {
          i++;   <--- [A]
      }
      
      void func(void)
      {
         int var1, var2;
         infunc(var2);
      }
      
      At [A], "var1" should point the global variable "var1", however, if user
      mis-typed as "var2", variable search should be failed. However, current
      logic searches variable infunc() scope, global scope, and then func()
      scope. Thus, it can find "var2" variable in func() scope. This may not
      be what user expects.
      
      So, it would better not search outer scopes except outermost (compile
      unit) scope which contains only global variables, when it failed to find
      given variable in local scope.
      
      E.g.
      
      Without this:
      $ perf probe -V pre_schedule --externs > without.vars
      
      With this:
      $ perf probe -V pre_schedule --externs > with.vars
      
      Check the diff:
      $ diff without.vars with.vars
      88d87
      <               int     cpu
      133d131
      <               long unsigned int*      switch_count
      
      These vars are actually in the scope of schedule(), the caller of
      pre_schedule().
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110305.19900.94374.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      f182e3e1
    • M
      perf probe: Fix to search local variables in appropriate scope · 221d0611
      Masami Hiramatsu 提交于
      Fix perf probe to search local variables in appropriate local inlined
      function scope. For example, pre_schedule() has only 2 local variables,
      as below;
      
      $ perf probe -L pre_schedule
      <pre_schedule@/home/mhiramat/ksrc/linux-2.6/kernel/sched.c:0>
            0  static inline void pre_schedule(struct rq *rq, struct task_struct *prev)
               {
            2         if (prev->sched_class->pre_schedule)
            3                 prev->sched_class->pre_schedule(rq, prev);
               }
      
      However, current perf probe shows 4 local variables on pre_schedule(),
      because it searches variables in the caller(schedule()) scope.
      
      $ perf probe -V pre_schedule
      Available variables at pre_schedule
              @<schedule+445>
                      int     cpu
                      long unsigned int*      switch_count
                      struct rq*      rq
                      struct task_struct*     prev
      
      This patch fixes this issue by searching variables in the local scope of
      the instance of inlined function. Here is the result.
      
      $ perf probe -V pre_schedule
      Available variables at pre_schedule
              @<schedule+445>
                      struct rq*      rq
                      struct task_struct*     prev
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110259.19900.85664.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      221d0611
    • M
      perf probe: Warn when more than one line are given · 13e27d76
      Masami Hiramatsu 提交于
      Check multiple --lines option and print warning informing that only the
      first specified --line option is valid.
      
      Changes from the 1st post:
      
      - Accept only the first option instead of the last.
      - Fix warning message according to David's comment.
      - Mark as a bugfix.
      
      Cc: David Ahern <dsahern@gmail.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110253.19900.96192.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      13e27d76
    • M
      perf probe: Fix to walk all inline instances · 36c0c588
      Masami Hiramatsu 提交于
      Fix line-range collector to walk all instances of inlined function,
      because some execution paths can be optimized out depending on the
      function argument of instances.
      
      E.g.)
      inline_func (arg) {
      	if (arg)
      		do_something;
      	else
      		do_another;
      }
      
      func_A() {
      	inline_func(1)
      }
      
      func_B() {
      	inline_func(0)
      }
      
      In this case, func_A may have only do_something code and func_B may have
      only do_another.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Masami Hiramatsu <masami.hiramatsu@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110247.19900.93702.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@gmail.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      36c0c588
    • M
      perf probe: Fix to search nested inlined functions in CU · b0e9cb28
      Masami Hiramatsu 提交于
      Fix perf probe to walk through the lines of all nested inlined function
      call sites and declared lines when a whole CU is passed to the line
      walker.
      
      The die_walk_lines() can have two different type of DIEs, subprogram (or
      inlined-subroutine) DIE and CU DIE.
      
      If a caller passes a subprogram DIE, this means that the walker walk on
      lines of given subprogram. In this case, it just needs to search on
      direct children of DIE tree for finding call-site information of inlined
      function which directly called from given subprogram.
      
      On the other hand, if a caller passes a CU DIE to the walker, this means
      that the walker have to walk on all lines in the source files included
      in given CU DIE. In this case, it has to search whole DIE trees of all
      subprograms to find the call-site information of all nested inlined
      functions.
      
      Without this patch:
      
      $ perf probe --line kernel/cpu.c:151-157
      </home/mhiramat/ksrc/linux-2.6/kernel/cpu.c:151>
      
               static int cpu_notify(unsigned long val, void *v)
               {
          154         return __cpu_notify(val, v, -1, NULL);
               }
      
      With this:
      $ perf probe --line kernel/cpu.c:151-157
      </home/mhiramat/ksrc/linux-2.6/kernel/cpu.c:151>
      
          152  static int cpu_notify(unsigned long val, void *v)
               {
          154         return __cpu_notify(val, v, -1, NULL);
               }
      
      As you can see, --line option with source line range shows the declared
      lines as probe-able.
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110241.19900.34994.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      b0e9cb28
    • M
      perf probe: Fix line walker to check CU correctly · a128405c
      Masami Hiramatsu 提交于
      Fix line walker to check whether a given DIE is CU or not.
      
      Actually this function accepts CU, subprogram and inlined_subroutine
      DIEs.
      
      Without this fix, perf probe always fails to analyze lines on inlined
      functions;
      
      $ perf probe -L pre_schedule
      Debuginfo analysis failed. (-2)
        Error: Failed to show lines. (-2)
      
      This fixes that bug, as below.
      
      $ perf probe -L pre_schedule
      <pre_schedule@/home/mhiramat/ksrc/linux-2.6/kernel/sched.c:0>
            0  static inline void pre_schedule(struct rq *rq, struct task_struct *prev
               {
            2         if (prev->sched_class->pre_schedule)
            3                 prev->sched_class->pre_schedule(rq, prev);
               }
      
               /* rq->lock is NOT held, but preemption is disabled */
      
      Changes from v1:
       - Update against current tip tree.(Fix dwarf-aux.c)
      
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Masami Hiramatsu <masami.hiramatsu@gmail.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110235.19900.20614.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@gmail.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      a128405c
    • M
      perf probe: Fix a memory leak for scopes array · 8afa2a70
      Masami Hiramatsu 提交于
      Fix a memory leak for scopes array when it finds a variable in the
      global scope.
      Reviewed-by: NPekka Enberg <penberg@kernel.org>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: yrl.pp-manager.tt@hitachi.com
      Link: http://lkml.kernel.org/r/20110811110229.19900.63019.stgit@fedora15Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      8afa2a70
    • V
      perf: fix temporary file ownership check · e9b52ef2
      Vasiliy Kulikov 提交于
      A file in /tmp/ might be a symlink, so lstat() should be used instead of
      stat().
      Acked-by: NPekka Enberg <penberg@kernel.org>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Pekka Enberg <penberg@kernel.org>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Link: http://lkml.kernel.org/r/20110811205537.GA22864@albatrosSigned-off-by: NVasiliy Kulikov <segoon@openwall.com>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      e9b52ef2
    • L
      Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc · eeca7360
      Linus Torvalds 提交于
      * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
        sparc: Don't do hypervisor calls on non-sun4v in DS driver.
      eeca7360
    • D
    • B
      pnfs: Automatically select blocks & objects layouts · 8cf1fb21
      Boaz Harrosh 提交于
      Just like files-layout, blocks & objects layouts are part of the
      NFS 4.1 protocol and should be automatically selected if NFS_4_1
      is selected. The small problem is that these depend on other
      Kernel support being present, while files only depends on NFS
      itself.
      
      This patch removes from the user choice the presence of objects
      and blocks layout. But makes sure these are selected only if
      the depended subsystems are present in the Kernel.
      Signed-off-by: NBoaz Harrosh <bharrosh@panasas.com>
      Acked-by: NPeng Tao <peng_tao@emc.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8cf1fb21
    • E
      ext4: Properly count journal credits for long symlinks · 8c208719
      Eric Sandeen 提交于
      Commit df5e6223 ("ext4: fix deadlock in ext4_symlink() in ENOSPC
      conditions") recalculated the number of credits needed for a long
      symlink, in the process of splitting it into two transactions.  However,
      the first credit calculation under-counted because if selinux is
      enabled, credits are needed to create the selinux xattr as well.
      
      Overrunning the reservation will result in an OOPS in
      jbd2_journal_dirty_metadata() due to this assert:
      
        J_ASSERT_JH(jh, handle->h_buffer_credits > 0);
      
      Fix this by increasing the reservation size.
      Signed-off-by: NEric Sandeen <sandeen@redhat.com>
      Reviewed-by: NJan Kara <jack@suse.cz>
      Acked-by: N"Theodore Ts'o" <tytso@mit.edu>
      Cc: stable@kernel.org
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      8c208719
    • E
      ext3: Properly count journal credits for long symlinks · d2db60df
      Eric Sandeen 提交于
      Commit ae54870a ("ext3: Fix lock inversion in ext3_symlink()")
      recalculated the number of credits needed for a long symlink, in the
      process of splitting it into two transactions.  However, the first
      credit calculation under-counted because if selinux is enabled, credits
      are needed to create the selinux xattr as well.
      
      Overrunning the reservation will result in an OOPS in
      journal_dirty_metadata() due to this assert:
      
        J_ASSERT_JH(jh, handle->h_buffer_credits > 0);
      
      Fix this by increasing the reservation size.
      Signed-off-by: NEric Sandeen <sandeen@redhat.com>
      Reviewed-by: NJan Kara <jack@suse.cz>
      Acked-by: N"Theodore Ts'o" <tytso@mit.edu>
      Cc: stable@kernel.org
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d2db60df
    • V
      move RLIMIT_NPROC check from set_user() to do_execve_common() · 72fa5997
      Vasiliy Kulikov 提交于
      The patch http://lkml.org/lkml/2003/7/13/226 introduced an RLIMIT_NPROC
      check in set_user() to check for NPROC exceeding via setuid() and
      similar functions.
      
      Before the check there was a possibility to greatly exceed the allowed
      number of processes by an unprivileged user if the program relied on
      rlimit only.  But the check created new security threat: many poorly
      written programs simply don't check setuid() return code and believe it
      cannot fail if executed with root privileges.  So, the check is removed
      in this patch because of too often privilege escalations related to
      buggy programs.
      
      The NPROC can still be enforced in the common code flow of daemons
      spawning user processes.  Most of daemons do fork()+setuid()+execve().
      The check introduced in execve() (1) enforces the same limit as in
      setuid() and (2) doesn't create similar security issues.
      
      Neil Brown suggested to track what specific process has exceeded the
      limit by setting PF_NPROC_EXCEEDED process flag.  With the change only
      this process would fail on execve(), and other processes' execve()
      behaviour is not changed.
      
      Solar Designer suggested to re-check whether NPROC limit is still
      exceeded at the moment of execve().  If the process was sleeping for
      days between set*uid() and execve(), and the NPROC counter step down
      under the limit, the defered execve() failure because NPROC limit was
      exceeded days ago would be unexpected.  If the limit is not exceeded
      anymore, we clear the flag on successful calls to execve() and fork().
      
      The flag is also cleared on successful calls to set_user() as the limit
      was exceeded for the previous user, not the current one.
      
      Similar check was introduced in -ow patches (without the process flag).
      
      v3 - clear PF_NPROC_EXCEEDED on successful calls to set_user().
      Reviewed-by: NJames Morris <jmorris@namei.org>
      Signed-off-by: NVasiliy Kulikov <segoon@openwall.com>
      Acked-by: NNeilBrown <neilb@suse.de>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      72fa5997
    • L
      Merge branch 'perf-urgent-for-linus' of... · 1d229d54
      Linus Torvalds 提交于
      Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
      
      * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
        perf symbols: Check '/tmp/perf-' symbol file ownership
        perf sched: Usage leftover from trace -> script rename
        perf sched: Do not delete session object prematurely
        perf tools: Check $HOME/.perfconfig ownership
        perf, x86: Add model 45 SandyBridge support
        perf tools: Add support to install perf python extension
        perf tools: do not look at ./config for configuration
        perf tools: Make clean leaves some files
        perf lock: Dropping unsupported ':r' modifier
        perf probe: Fix coredump introduced by probe module option
        jump label: Reduce the cycle count by changing the link order
        perf report: Use ui__warning in some more places
        perf python: Add PERF_RECORD_{LOST,READ,SAMPLE} routine tables
        perf evlist: Introduce 'disable' method
        trace events: Update version number reference to new 3.x scheme for EVENT_POWER_TRACING_DEPRECATED
        perf buildid-cache: Zero out buffer of filenames when adding/removing buildid
      1d229d54
    • T
      MAINTAINERS: Update linus' git repository · d16adea3
      Tracey Dent 提交于
      Change to new git tree -
       (git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git).
      Signed-off-by: NTracey Dent <tdent48227@gmail.com>
      Acked-by: NWANG Cong <xiyou.wangcong@gmail.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      d16adea3
  4. 11 8月, 2011 7 次提交
  5. 10 8月, 2011 10 次提交