Eric Lee / smarc-fsl-linux-kernel

25 Jul, 2011

1 commit

21 Apr, 2011

1 commit

  • d20ac2528   ftrace: Build without frame pointers on Microblaze ... Browse Code »

    Microblaze doesn't need/support FRAME_POINTERS in order to have a working
    function tracer.

    The patch remove Kconfig warning.

    Warning log:
    warning: (LOCKDEP && FAULT_INJECTION_STACKTRACE_FILTER && LATENCYTOP &&
    FUNCTION_TRACER && KMEMCHECK) selects FRAME_POINTER which has unmet direct
    dependencies (DEBUG_KERNEL && (CRIS || M68K || FRV || UML || AVR32 ||
    SUPERH || BLACKFIN || MN10300) || ARCH_WANT_FRAME_POINTERS)

    Signed-off-by: Michal Simek
    Link: http://lkml.kernel.org/r/1301908812-8119-2-git-send-email-monstr@monstr.eu
    CC: Frederic Weisbecker
    CC: Ingo Molnar
    Signed-off-by: Steven Rostedt

    Michal Simek
     

17 Mar, 2011

1 commit

04 Jan, 2011

1 commit

  • 25e41933b   perf: Clean up power events by introducing new, more generic ones ... Browse Code »

    Add these new power trace events:

    power:cpu_idle
    power:cpu_frequency
    power:machine_suspend

    The old C-state/idle accounting events:
    power:power_start
    power:power_end

    Have now a replacement (but we are still keeping the old
    tracepoints for compatibility):

    power:cpu_idle

    and
    power:power_frequency

    is replaced with:
    power:cpu_frequency

    power:machine_suspend is newly introduced.

    Jean Pihet has a patch integrated into the generic layer
    (kernel/power/suspend.c) which will make use of it.

    the type= field got removed from both, it was never
    used and the type is differed by the event type itself.

    perf timechart userspace tool gets adjusted in a separate patch.

    Signed-off-by: Thomas Renninger
    Signed-off-by: Ingo Molnar
    Acked-by: Arjan van de Ven
    Acked-by: Jean Pihet
    Cc: Arnaldo Carvalho de Melo
    Cc: Peter Zijlstra
    Cc: Linus Torvalds
    Cc: rjw@sisk.pl
    LKML-Reference:
    Signed-off-by: Ingo Molnar
    LKML-Reference:

    Thomas Renninger
     

10 Nov, 2010

1 commit

22 Oct, 2010

1 commit

  • b5153163e   Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm ... Browse Code »

    * 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm: (278 commits)
    arm: remove machine_desc.io_pg_offst and .phys_io
    arm: use addruart macro to establish debug mappings
    arm: return both physical and virtual addresses from addruart
    arm/debug: consolidate addruart macros for CONFIG_DEBUG_ICEDCC
    ARM: make struct machine_desc definition coherent with its comment
    eukrea_mbimxsd-baseboard: Pass the correct GPIO to gpio_free
    cpuimx27: fix compile when ULPI is selected
    mach-pcm037_eet: fix compile errors
    Fixing ethernet driver compilation error for i.MX31 ADS board
    cpuimx51: update board support
    mx5: add cpuimx51sd module and its baseboard
    iomux-mx51: fix GPIO_1_xx 's IOMUX configuration
    imx-esdhc: update devices registration
    mx51: add resources for SD/MMC on i.MX51
    iomux-mx51: fix SD1 and SD2's iomux configuration
    clock-mx51: rename CLOCK1 to CLOCK_CCGR for better readability
    clock-mx51: factorize clk_set_parent and clk_get_rate
    eukrea_mbimxsd: add support for DVI displays
    cpuimx25 & cpuimx35: fix OTG port registration in host mode
    i.MX31 and i.MX35 : fix errate TLSbo65953 and ENGcm09472
    ...

    Linus Torvalds
     

15 Oct, 2010

2 commits

  • cf4db2597   ftrace: Rename config option HAVE_C_MCOUNT_RECORD to HAVE_C_RECORDMCOUNT ... Browse Code »

    The config option used by archs to let the build system know that
    the C version of the recordmcount works for said arch is currently
    called HAVE_C_MCOUNT_RECORD which enables BUILD_C_RECORDMCOUNT. To
    be more consistent with the name that all archs may use, it has been
    renamed to HAVE_C_RECORDMCOUNT. This will be less confusing since
    we are building a C recordmcount and not a mcount_record.

    Suggested-by: Ingo Molnar
    Cc:
    Cc: Michal Marek
    Cc: linux-kbuild@vger.kernel.org
    Cc: John Reiser
    Signed-off-by: Steven Rostedt

    Steven Rostedt
     
  • 72441cb1f   ftrace/x86: Add support for C version of recordmcount ... Browse Code »

    This patch adds the support for the C version of recordmcount and
    compile times show ~ 12% improvement.

    After verifying this works, other archs can add:

    HAVE_C_MCOUNT_RECORD

    in its Kconfig and it will use the C version of recordmcount
    instead of the perl version.

    Cc:
    Cc: Michal Marek
    Cc: linux-kbuild@vger.kernel.org
    Cc: John Reiser
    Signed-off-by: Steven Rostedt

    Steven Rostedt
     

02 Sep, 2010

1 commit

08 Aug, 2010

1 commit

  • 3b7433b8a   Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq ... Browse Code »

    * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq: (55 commits)
    workqueue: mark init_workqueues() as early_initcall()
    workqueue: explain for_each_*cwq_cpu() iterators
    fscache: fix build on !CONFIG_SYSCTL
    slow-work: kill it
    gfs2: use workqueue instead of slow-work
    drm: use workqueue instead of slow-work
    cifs: use workqueue instead of slow-work
    fscache: drop references to slow-work
    fscache: convert operation to use workqueue instead of slow-work
    fscache: convert object to use workqueue instead of slow-work
    workqueue: fix how cpu number is stored in work->data
    workqueue: fix mayday_mask handling on UP
    workqueue: fix build problem on !CONFIG_SMP
    workqueue: fix locking in retry path of maybe_create_worker()
    async: use workqueue for worker pool
    workqueue: remove WQ_SINGLE_CPU and use WQ_UNBOUND instead
    workqueue: implement unbound workqueue
    workqueue: prepare for WQ_UNBOUND implementation
    libata: take advantage of cmwq and remove concurrency limitations
    workqueue: fix worker management invocation without pending works
    ...

    Fixed up conflicts in fs/cifs/* as per Tejun. Other trivial conflicts in
    include/linux/workqueue.h, kernel/trace/Kconfig and kernel/workqueue.c

    Linus Torvalds
     

07 Aug, 2010

1 commit

  • b62ad9ab1   Merge branch 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linu… ... Browse Code »

    …x/kernel/git/tip/linux-2.6-tip

    * 'timers-timekeeping-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
    um: Fix read_persistent_clock fallout
    kgdb: Do not access xtime directly
    powerpc: Clean up obsolete code relating to decrementer and timebase
    powerpc: Rework VDSO gettimeofday to prevent time going backwards
    clocksource: Add __clocksource_updatefreq_hz/khz methods
    x86: Convert common clocksources to use clocksource_register_hz/khz
    timekeeping: Make xtime and wall_to_monotonic static
    hrtimer: Cleanup direct access to wall_to_monotonic
    um: Convert to use read_persistent_clock
    timkeeping: Fix update_vsyscall to provide wall_to_monotonic offset
    powerpc: Cleanup xtime usage
    powerpc: Simplify update_vsyscall
    time: Kill off CONFIG_GENERIC_TIME
    time: Implement timespec_add
    x86: Fix vtime/file timestamp inconsistencies

    Trivial conflicts in Documentation/feature-removal-schedule.txt

    Much less trivial conflicts in arch/powerpc/kernel/time.c resolved as
    per Thomas' earlier merge commit 47916be4e28c ("Merge branch
    'powerpc.cherry-picks' into timers/clocksource")

    Linus Torvalds
     

27 Jul, 2010

1 commit

  • 592913ecb   time: Kill off CONFIG_GENERIC_TIME ... Browse Code »

    Now that all arches have been converted over to use generic time via
    clocksources or arch_gettimeoffset(), we can remove the GENERIC_TIME
    config option and simplify the generic code.

    Signed-off-by: John Stultz
    LKML-Reference:
    Signed-off-by: Thomas Gleixner

    John Stultz
     

20 Jul, 2010

1 commit

  • f376bf5ff   tracing: Remove sysprof ftrace plugin ... Browse Code »

    The sysprof ftrace plugin doesn't seem to be seriously used
    somewhere. There is a branch in the sysprof tree that makes
    an interface to it, but the real sysprof tool uses either its
    own module or perf events.

    Drop the sysprof ftrace plugin then, as it's mostly useless.

    Signed-off-by: Frederic Weisbecker
    Acked-by: Soeren Sandmann
    Cc: Peter Zijlstra
    Cc: Ingo Molnar
    Cc: Steven Rostedt
    Cc: Li Zefan

    Frederic Weisbecker
     

16 Jul, 2010

1 commit

  • 5d550467b   tracing: Remove ksym tracer ... Browse Code »

    The ksym (breakpoint) ftrace plugin has been superseded by perf
    tools that are much more poweful to use the cpu breakpoints.
    This tracer doesn't bring more feature. It has been deprecated
    for a while now, lets remove it.

    Signed-off-by: Frederic Weisbecker
    Cc: Steven Rostedt
    Cc: Prasad
    Cc: Ingo Molnar

    Frederic Weisbecker
     

29 Jun, 2010

1 commit

09 Jun, 2010

2 commits

  • 039ca4e74   tracing: Remove kmemtrace ftrace plugin ... Browse Code »

    We have been resisting new ftrace plugins and removing existing
    ones, and kmemtrace has been superseded by kmem trace events
    and perf-kmem, so we remove it.

    Signed-off-by: Li Zefan
    Acked-by: Pekka Enberg
    Acked-by: Eduard - Gabriel Munteanu
    Cc: Ingo Molnar
    Cc: Steven Rostedt
    [ remove kmemtrace from the makefile, handle slob too ]
    Signed-off-by: Frederic Weisbecker

    Li Zefan
     
  • 30dbb20e6   tracing: Remove boot tracer ... Browse Code »

    The boot tracer is useless. It simply logs the initcalls
    but in fact these initcalls are also logged through printk
    while using the initcall_debug kernel parameter.

    Nobody seem to be using it so far. Then just remove it.

    Signed-off-by: WANG Cong
    Cc: Chase Douglas
    Cc: Steven Rostedt
    Cc: Ingo Molnar
    Cc: Peter Zijlstra
    Cc: Li Zefan
    LKML-Reference:
    [ remove the hooks in main.c, and the headers ]
    Signed-off-by: Frederic Weisbecker

    Américo Wang
     

26 Mar, 2010

1 commit

  • faa4602e4   x86, perf, bts, mm: Delete the never used BTS-ptrace code ... Browse Code »
    43

    Support for the PMU's BTS features has been upstreamed in
    v2.6.32, but we still have the old and disabled ptrace-BTS,
    as Linus noticed it not so long ago.

    It's buggy: TIF_DEBUGCTLMSR is trampling all over that MSR without
    regard for other uses (perf) and doesn't provide the flexibility
    needed for perf either.

    Its users are ptrace-block-step and ptrace-bts, since ptrace-bts
    was never used and ptrace-block-step can be implemented using a
    much simpler approach.

    So axe all 3000 lines of it. That includes the *locked_memory*()
    APIs in mm/mlock.c as well.

    Reported-by: Linus Torvalds
    Signed-off-by: Peter Zijlstra
    Cc: Roland McGrath
    Cc: Oleg Nesterov
    Cc: Markus Metzger
    Cc: Steven Rostedt
    Cc: Andrew Morton
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Peter Zijlstra
     

27 Feb, 2010

1 commit

26 Feb, 2010

1 commit

25 Feb, 2010

1 commit

17 Feb, 2010

1 commit

  • f850c30c8   tracing/kprobes: Make Kconfig dependencies generic ... Browse Code »

    KPROBES_EVENT actually depends on the regs and stack access API
    (b1cf540f) and not on x86.
    So introduce a new config option which architectures can select if
    they have the API implemented and switch x86.

    Signed-off-by: Heiko Carstens
    Acked-by: Masami Hiramatsu
    Cc: Ingo Molnar
    Cc: Martin Schwidefsky
    LKML-Reference:
    Signed-off-by: Frederic Weisbecker

    Heiko Carstens
     

27 Jan, 2010

1 commit

28 Dec, 2009

1 commit

  • 40892367b   tracing: Kconfig spelling fixes and cleanups ... Browse Code »

    Fix filename reference (ftrace-implementation.txt ->
    ftrace-design.txt).

    Fix spelling, punctuation, grammar.

    Fix help text indentation and line lengths to reduce need for
    horizontal scrolling or larger window sizes.

    Signed-off-by: Randy Dunlap
    Cc: Steven Rostedt
    Cc: Frederic Weisbecker
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Randy Dunlap
     

21 Nov, 2009

1 commit

04 Nov, 2009

1 commit

  • 77b44d1b7   tracing/kprobes: Rename Kprobe-tracer to kprobe-event ... Browse Code »

    Rename Kprobes-based event tracer to kprobes-based tracing event
    (kprobe-event), since it is not a tracer but an extensible
    tracing event interface.

    This also changes CONFIG_KPROBE_TRACER to CONFIG_KPROBE_EVENT
    and sets it y by default.

    Signed-off-by: Masami Hiramatsu
    Acked-by: Frederic Weisbecker
    Cc: Steven Rostedt
    Cc: Jim Keniston
    Cc: Ananth N Mavinakayanahalli
    Cc: Christoph Hellwig
    Cc: Frank Ch. Eigler
    Cc: Jason Baron
    Cc: K.Prasad
    Cc: Peter Zijlstra
    Cc: Srikar Dronamraju
    LKML-Reference:
    Signed-off-by: Ingo Molnar

    Masami Hiramatsu
     

18 Oct, 2009

1 commit

24 Sep, 2009

1 commit

21 Sep, 2009

1 commit

15 Sep, 2009

1 commit

  • 555f386c9   ftrace: document function and function graph implementation ... Browse Code »

    While implementing function tracer and function tracer graph support,
    I found the exact arch implementation details to be a bit lacking
    (and my x86 foo ain't great). So after pounding out support for
    the Blackfin arch, start documenting the requirements/details.

    Signed-off-by: Mike Frysinger
    LKML-Reference:
    Acked-by: Frederic Weisbecker
    Signed-off-by: Steven Rostedt

    Mike Frysinger
     

14 Sep, 2009

1 commit

  • 1f5a6b454   tracing: make testing syscall events a separate configuration ... Browse Code »

    Parag noticed that the number of event tests has increased tremendously:

    grep "Testing event" dmesg.31rc9 |wc -l
    100

    grep "Testing event" dmesg.31git |wc -l
    1172

    This is due to the testing of every syscall event when ftrace self
    test is enabled. This adds a bit more time to kernel boot up and can
    affect development by slowing down the time it takes between reboots.

    This option makes the testing of the syscall events into a separate
    config, to still be able to test most of ftrace internals at boot up
    but not have to wait for all the syscall events to be tested.

    The syscall event testing only tests the enabling and disabling of
    the trace point, since the syscalls are not executed. What really needs
    to be done is to somehow have a userspace tool test the syscall tracepoints
    as well.

    Reported-by: Parag Warudkar
    LKML-Reference:
    Signed-off-by: Steven Rostedt

    Steven Rostedt
     

11 Sep, 2009

1 commit

  • 8f8ffe248   Merge commit 'tracing/core' into tracing/kprobes ... Browse Code »

    Conflicts:
    kernel/trace/trace_export.c
    kernel/trace/trace_kprobe.c

    Merge reason: This topic branch lacks an important
    build fix in tracing/core:

    0dd7b74787eaf7858c6c573353a83c3e2766e674:
    tracing: Fix double CPP substitution in TRACE_EVENT_FN

    that prevents from multiple tracepoint headers inclusion crashes.

    Signed-off-by: Frederic Weisbecker

    Frederic Weisbecker
     

07 Sep, 2009

1 commit

05 Sep, 2009

1 commit

  • 85bac32c4   ring-buffer: only enable ring_buffer_swap_cpu when needed ... Browse Code »

    Since the ability to swap the cpu buffers adds a small overhead to
    the recording of a trace, we only want to add it when needed.

    Only the irqsoff and preemptoff tracers use this feature, and both are
    not recommended for production kernels. This patch disables its use
    when neither irqsoff nor preemptoff is configured.

    Signed-off-by: Steven Rostedt

    Steven Rostedt
     

28 Aug, 2009

1 commit

27 Aug, 2009

1 commit

  • 413d37d1e   tracing: Add kprobe-based event tracer ... Browse Code »

    Add kprobes-based event tracer on ftrace.

    This tracer is similar to the events tracer which is based on Tracepoint
    infrastructure. Instead of Tracepoint, this tracer is based on kprobes
    (kprobe and kretprobe). It probes anywhere where kprobes can probe(this
    means, all functions body except for __kprobes functions).

    Similar to the events tracer, this tracer doesn't need to be activated
    via current_tracer, instead of that, just set probe points via
    /sys/kernel/debug/tracing/kprobe_events. And you can set filters on each
    probe events via /sys/kernel/debug/tracing/events/kprobes//filter.

    This tracer supports following probe arguments for each probe.

    %REG : Fetch register REG
    sN : Fetch Nth entry of stack (N >= 0)
    sa : Fetch stack address.
    @ADDR : Fetch memory at ADDR (ADDR should be in kernel)
    @SYM[+|-offs] : Fetch memory at SYM +|- offs (SYM should be a data symbol)
    aN : Fetch function argument. (N >= 0)
    rv : Fetch return value.
    ra : Fetch return address.
    +|-offs(FETCHARG) : fetch memory at FETCHARG +|- offs address.

    See Documentation/trace/kprobetrace.txt in the next patch for details.

    Changes from v13:
    - Support 'sa' for stack address.
    - Use call->data instead of container_of() macro.

    [fweisbec@gmail.com: Fixed conflict against latest tracing/core]

    Signed-off-by: Masami Hiramatsu
    Acked-by: Ananth N Mavinakayanahalli
    Cc: Avi Kivity
    Cc: Andi Kleen
    Cc: Christoph Hellwig
    Cc: Frank Ch. Eigler
    Cc: H. Peter Anvin
    Cc: Ingo Molnar
    Cc: Jason Baron
    Cc: Jim Keniston
    Cc: K.Prasad
    Cc: Lai Jiangshan
    Cc: Li Zefan
    Cc: Przemysław Pawełczyk
    Cc: Roland McGrath
    Cc: Sam Ravnborg
    Cc: Srikar Dronamraju
    Cc: Steven Rostedt
    Cc: Tom Zanussi
    Cc: Vegard Nossum
    LKML-Reference:
    Signed-off-by: Frederic Weisbecker

    Masami Hiramatsu
     

26 Aug, 2009

1 commit

  • 667000011   tracing: Rename FTRACE_SYSCALLS for tracepoints ... Browse Code »

    s/HAVE_FTRACE_SYSCALLS/HAVE_SYSCALL_TRACEPOINTS/g
    s/TIF_SYSCALL_FTRACE/TIF_SYSCALL_TRACEPOINT/g

    The syscall enter/exit tracing is no longer specific to just ftrace, so
    they now have names that reflect their tie to tracepoints instead.

    Signed-off-by: Josh Stone
    Cc: Jason Baron
    Cc: Frederic Weisbecker
    Cc: Ingo Molnar
    Cc: Li Zefan
    Cc: Steven Rostedt
    Cc: Peter Zijlstra
    Cc: Mathieu Desnoyers
    Cc: Jiaying Zhang
    Cc: Martin Bligh
    Cc: Lai Jiangshan
    Cc: Paul Mundt
    Cc: Martin Schwidefsky
    Cc: Heiko Carstens
    LKML-Reference:
    Signed-off-by: Frederic Weisbecker

    Josh Stone
     

29 Jun, 2009

1 commit

21 Jun, 2009

1 commit

  • b0b7065b6   Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/ker… ... Browse Code »

    …nel/git/tip/linux-2.6-tip

    * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (24 commits)
    tracing/urgent: warn in case of ftrace_start_up inbalance
    tracing/urgent: fix unbalanced ftrace_start_up
    function-graph: add stack frame test
    function-graph: disable when both x86_32 and optimize for size are configured
    ring-buffer: have benchmark test print to trace buffer
    ring-buffer: do not grab locks in nmi
    ring-buffer: add locks around rb_per_cpu_empty
    ring-buffer: check for less than two in size allocation
    ring-buffer: remove useless compile check for buffer_page size
    ring-buffer: remove useless warn on check
    ring-buffer: use BUF_PAGE_HDR_SIZE in calculating index
    tracing: update sample event documentation
    tracing/filters: fix race between filter setting and module unload
    tracing/filters: free filter_string in destroy_preds()
    ring-buffer: use commit counters for commit pointer accounting
    ring-buffer: remove unused variable
    ring-buffer: have benchmark test handle discarded events
    ring-buffer: prevent adding write in discarded area
    tracing/filters: strloc should be unsigned short
    tracing/filters: operand can be negative
    ...

    Fix up kmemcheck-induced conflict in kernel/trace/ring_buffer.c manually

    Linus Torvalds
     

19 Jun, 2009

1 commit

  • 71e308a23   function-graph: add stack frame test ... Browse Code »

    In case gcc does something funny with the stack frames, or the return
    from function code, we would like to detect that.

    An arch may implement passing of a variable that is unique to the
    function and can be saved on entering a function and can be tested
    when exiting the function. Usually the frame pointer can be used for
    this purpose.

    This patch also implements this for x86. Where it passes in the stack
    frame of the parent function, and will test that frame on exit.

    There was a case in x86_32 with optimize for size (-Os) where, for a
    few functions, gcc would align the stack frame and place a copy of the
    return address into it. The function graph tracer modified the copy and
    not the actual return address. On return from the funtion, it did not go
    to the tracer hook, but returned to the parent. This broke the function
    graph tracer, because the return of the parent (where gcc did not do
    this funky manipulation) returned to the location that the child function
    was suppose to. This caused strange kernel crashes.

    This test detected the problem and pointed out where the issue was.

    This modifies the parameters of one of the functions that the arch
    specific code calls, so it includes changes to arch code to accommodate
    the new prototype.

    Note, I notice that the parsic arch implements its own push_return_trace.
    This is now a generic function and the ftrace_push_return_trace should be
    used instead. This patch does not touch that code.

    Cc: Benjamin Herrenschmidt
    Cc: Paul Mackerras
    Cc: Heiko Carstens
    Cc: Martin Schwidefsky
    Cc: Frederic Weisbecker
    Cc: Helge Deller
    Cc: Kyle McMartin
    Signed-off-by: Steven Rostedt

    Steven Rostedt