1. 01 Aug, 2010 12 commits
    • Marcin Slusarz's avatar
      x86,mmiotrace: Add support for tracing STOS instruction · cc05152a
      Marcin Slusarz authored
      Add support for stos access tracing with mmiotrace.
      Signed-off-by: default avatarMarcin Slusarz <marcin.slusarz@gmail.com>
      Acked-by: default avatarPekka Paalanen <pq@iki.fi>
      Cc: Nouveau <nouveau@lists.freedesktop.org>
      Cc: Thomas Gleixner <tglx@linutronix.de>
      Cc: H. Peter Anvin <hpa@zytor.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      LKML-Reference: <20100731205101.GA5860@joi.lan>
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      cc05152a
    • Frederic Weisbecker's avatar
      perf, sched migration: Librarize task states and event headers helpers · 1b0ff06e
      Frederic Weisbecker authored
      Librarize the task state and event headers helpers as they can
      be generally useful.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Nikhil Rao <ncrao@google.com>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      1b0ff06e
    • Frederic Weisbecker's avatar
      perf, sched migration: Librarize the GUI class · df92b408
      Frederic Weisbecker authored
      Export the GUI facility in the common library path. It is
      going to be useful for other scheduler views.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Nikhil Rao <ncrao@google.com>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      df92b408
    • Frederic Weisbecker's avatar
      perf, sched migration: Make the GUI class client agnostic · 699b6d92
      Frederic Weisbecker authored
      Make the perf migration GUI generic so that it can be reused for
      other kinds of trace painting. No more notion of CPUs or runqueue
      from the GUI class, it's now used as a library by the trace parser.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Nikhil Rao <ncrao@google.com>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      699b6d92
    • Frederic Weisbecker's avatar
      perf, sched migration: Make it vertically scrollable · 70d815a3
      Frederic Weisbecker authored
      With scheduler traces covering more than two cpus, rectangles
      of the CPUs 3 and more are not visibles.
      
      This makes the vertical navigation scrollable so that all of the
      CPUs rectangles are available.
      
      We also want to be able to zoom vertically, so that we can fit at
      best the screen with CPU rectangles, but that's for later.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Nikhil Rao <ncrao@google.com>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      70d815a3
    • Nikhil Rao's avatar
      perf, sched migration: Parameterize cpu height and spacing · 0cddf56a
      Nikhil Rao authored
      Without vertical zoom, it is not possible to see all CPUs in a trace
      taken on a larger machine. This patch parameterizes the height and
      spacing of CPUs so that you can fit more cpus into the screen.
      
      Ideally we should dynamically size/space the CPU rectangles with some
      minimum threshold. Until then, this patch is a stop-gap.
      Signed-off-by: default avatarNikhil Rao <ncrao@google.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      0cddf56a
    • Nikhil Rao's avatar
      perf, sched migration: Fix key bindings · be6d9476
      Nikhil Rao authored
      EVT_KEY_DOWN and EVT_LEFT_DOWN events are not bound to the RootFrame
      event handler. As a result, zoom/scroll via keyboard events do not
      work. This patch adds the missing bindings.
      Signed-off-by: default avatarNikhil Rao <ncrao@google.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      be6d9476
    • Frederic Weisbecker's avatar
      perf, sched migration: Ignore unhandled task states · 207f90fc
      Frederic Weisbecker authored
      Stop printing an error message when we don't have the letter
      for a given task state. All we need to know is if the task is
      in the TASK_RUNNING state.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Nikhil Rao <ncrao@google.com>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      207f90fc
    • Frederic Weisbecker's avatar
      perf, sched migration: Handle ignored migrate out events · 749e5074
      Frederic Weisbecker authored
      Migrate out events may happen on tasks that are not in the
      runqueue, for example this is the case for tasks that are
      sleeping. In this case, we don't want to log the migrate out
      event in the source runqueue because the task is not eventually
      in the runqueue and we have already logged its sleep event.
      
      This fixes timeslices that spuriously propagate a sleep event
      from the previous timeslice.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Nikhil Rao <ncrao@google.com>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      749e5074
    • Frederic Weisbecker's avatar
      perf: New migration tool overview · 880d22f2
      Frederic Weisbecker authored
      This brings a GUI tool that displays an overview of the load
      of tasks proportion in each CPUs.
      
      The CPUs forward progress is cut in timeslices. A new timeslice
      is created for every runqueue event: a task gets pushed out or
      pulled in the runqueue.
      
      For each timeslice, every CPUs rectangle is colored with a red
      power that describes the local load against the total load.
      This more red is the rectangle, the higher is the given CPU load.
      This load is the number of tasks running on the CPU, without
      any distinction against the scheduler policy of the tasks, for
      now.
      
      Also for each timeslice, the event origin is depicted on the
      CPUs that triggered it using a thin colored line on top of the
      rectangle timeslice.
      
      These events are:
      
      * sleep: a task went to sleep and has then been pulled out the
        runqueue. The origin color in the thin line is dark blue.
      
      * wake up: a task woke up and has then been pushed in the
        runqueue. The origin color is yellow.
      
      * wake up new: a new task woke up and has then been pushed in the
        runqueue. The origin color is green.
      
      * migrate in: a task migrated in the runqueue due to a load
        balancing operation. The origin color is violet.
      
      * migrate out: reverse of the previous one. Migrate in events
        usually have paired migrate out events in another runqueue.
        The origin color is light blue.
      
      Clicking on a timeslice provides the runqueue event details
      and the runqueue state.
      
      The CPU rectangles can be navigated using the usual arrow
      controls. Horizontal zooming in/out is possible with the
      "+" and "-" buttons.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Li Zefan <lizf@cn.fujitsu.com>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Tom Zanussi <tzanussi@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Venkatesh Pallipadi <venki@google.com>
      Cc: Pierre Tardy <tardyp@gmail.com>
      Cc: Nikhil Rao <ncrao@google.com>
      Cc: Li Zefan <lizf@cn.fujitsu.com>
      880d22f2
    • Frederic Weisbecker's avatar
      tracing: Drop cpparg() macro · 819ce45a
      Frederic Weisbecker authored
      Drop the cpparg() macro that wraps CPP parameters. We already have
      the PARAM() macro for that, no need to have several versions.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Li Zefan <lizf@cn.fujitsu.com>
      819ce45a
    • Frederic Weisbecker's avatar
      perf: Use tracepoint_synchronize_unregister() to flush any pending tracepoint call · 669336e4
      Frederic Weisbecker authored
      We use synchronize_sched() to ensure a tracepoint won't be called
      while/after we release the perf buffers it references.
      
      But the tracepoint API has its own API for that:
      tracepoint_synchronize_unregister(). Use it instead as it's
      self-explanatory and eases maintainance.
      Signed-off-by: default avatarFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
      Cc: Steven Rostedt <rostedt@goodmis.org>
      Cc: Li Zefan <lizf@cn.fujitsu.com>
      669336e4
  2. 23 Jul, 2010 1 commit
  3. 22 Jul, 2010 3 commits
    • Dan Carpenter's avatar
      trace: strlen() return doesn't account for the NULL · 24a461d5
      Dan Carpenter authored
      We need to add one to the strlen() return because of the NULL
      character.  The type->name here generally comes from the kernel and I
      don't think any of them come close to being MAX_TRACER_SIZE (100)
      characters long so this is basically a cleanup.
      Signed-off-by: default avatarDan Carpenter <error27@gmail.com>
      LKML-Reference: <20100710100644.GV19184@bicker>
      Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      24a461d5
    • David Daney's avatar
      tracing: Fix $mcount_regex for MIPS in recordmcount.pl · a484e54f
      David Daney authored
      I found this issue in a locally patched 2.6.32.x, current kernels have
      moved the offending code to an __init function which is skipped by
      recordmcount.pl, so the bug is not currently being exercised.
      However, I think the patch is still a good idea, to avoid future
      problems if _mcount were to ever have its address taken in normal
      code.
      
      This is what I originally saw:
      
          Although arch/mips/kernel/ftrace.c is built without -pg, and thus
          contains no calls to _mcount, it does use the address of _mcount
          in ftrace_make_nop().  This was causing relocations to be emitted
          for _mcount which recordmcount.pl erronously took to be _mcount
          call sites.  The result was that the text of ftrace_make_nop()
          would be patched with garbage leading to a system crash.
      
      In non-module code, all _mcount call sites will have R_MIPS_26
      relocations, so we restrict $mcount_regex to only match on these.
      Acked-by: default avatarRalf Baechle <ralf@linux-mips.org>
      Acked-by: default avatarWu Zhangjin <wuzhangjin@gmail.com>
      Signed-off-by: default avatarDavid Daney <ddaney@caviumnetworks.com>
      LKML-Reference: <1278712325-12050-1-git-send-email-ddaney@caviumnetworks.com>
      Cc: Li Hong <lihong.hi@gmail.com>
      Cc: Ingo Molnar <mingo@elte.hu>
      Cc: Matt Fleming <matt@console-pimps.org>
      Signed-off-by: default avatarSteven Rostedt <rostedt@goodmis.org>
      a484e54f
    • Thomas Renninger's avatar
      x86 cpufreq, perf: Make trace_power_frequency cpufreq driver independent · 4c21adf2
      Thomas Renninger authored
      and fix the broken case if a core's frequency depends on others.
      
      trace_power_frequency was only implemented in a rather ungeneric
      way in acpi-cpufreq driver's target() function only.
      
      -> Move the call to trace_power_frequency to
         cpufreq.c:cpufreq_notify_transition() where CPUFREQ_POSTCHANGE
         notifier is triggered.
         This will support power frequency tracing by all cpufreq
         drivers.
      
      trace_power_frequency did not trace frequency changes correctly
      when the userspace governor was used or when CPU cores'
      frequency depend on each other.
      
      -> Moving this into the CPUFREQ_POSTCHANGE notifier and pass the cpu
         which gets switched automatically fixes this.
      
      Robert Schoene provided some important fixes on top of my
      initial quick shot version which are integrated in this patch:
      - Forgot some changes in power_end trace (TP_printk/variable names)
      - Variable dummy in power_end must now be cpu_id
      - Use static 64 bit variable instead of unsigned int for cpu_id
      
      [akpm@linux-foundation.org: build fix]
      Signed-off-by: default avatarThomas Renninger <trenn@suse.de>
      Cc: davej@codemonkey.org.uk
      Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
      Cc: Dave Jones <davej@codemonkey.org.uk>
      Acked-by: default avatarArjan van de Ven <arjan@infradead.org>
      Cc: Robert Schoene <robert.schoene@tu-dresden.de>
      Tested-by: default avatarRobert Schoene <robert.schoene@tu-dresden.de>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      4c21adf2
  4. 21 Jul, 2010 17 commits
  5. 20 Jul, 2010 7 commits