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The error cleanup paths aren't quite correct and will crash upon
deferred probe.
Cc: stable@vger.kernel.org # v4.3+
Reviewed-by: Ben Skeggs <bskeggs@redhat.com>
Reviewed-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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CONFIG_ARCH_SHMOBILE is not only enabled for Renesas ARM platforms
(which are DT based and multi-platform), but also on a select set of
Renesas SuperH platforms (SH7722/SH7723/SH7724/SH7343/SH7366). Hence
since commit 0ba58de231066e47 ("drivers: sh: Get rid of
CONFIG_ARCH_SHMOBILE_MULTI"), the legacy clock domain is no longer
installed on these SuperH platforms, and module clocks may not be
enabled when needed, leading to driver failures.
To fix this, add an additional check for CONFIG_OF.
Fixes: 0ba58de231066e47 ("drivers: sh: Get rid of CONFIG_ARCH_SHMOBILE_MULTI").
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Support hierarchy output for perf-top using --hierarchy option.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-19-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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In the hierarchy mode, hist entries should decay their children too.
Also update hists__delete_entry() to be able to free child entries.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-18-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The --hierarchy option is to show output in hierarchy mode. It extends
folding/unfolding in the TUI and GTK browsers to support sort items as
well as callchains. Users can toggle the items to see the performance
result at wanted level.
$ perf report --hierarchy --tui
Overhead Command / Shared Object / Symbol
--------------------------------------------------
+ 32.96% gnome-shell
- 15.11% swapper
- 14.97% [kernel.vmlinux]
6.82% [k] intel_idle
0.66% [k] menu_select
0.43% [k] __hrtimer_start_range_ns
...
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-17-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The hierarchy output mode is to group entries for each level so that
user can see higher level picture more easily.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-16-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Like in stdio, fit column header to hierarchy output. Merge column
headers with "/" as a separator.
Overhead Command / Shared Object / Symbol
...
+ 0.09% dwm
+ 0.06% emacs
- 0.05% perf
- 0.05% [kernel.vmlinux]
+ 0.03% [k] memcpy_orig
+ 0.01% [k] unmap_single_vma
+ 0.01% [k] smp_call_function_single
+ 0.00% [k] native_irq_return_iret
+ 0.00% [k] arch_trigger_all_cpu_backtrace_handler
+ 0.00% [k] native_write_msr_safe
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-15-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Implement hierarchy mode in TUI. The output is look like stdio but it
also supports to fold/unfold children dynamically.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-14-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The 'C' and 'E' keys are to collapse/expand all hist entries. Update
nr_hierarchy_entries properly in this case.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-13-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Add nr_hierarchy_entries field to keep current number of (unfolded) hist
entries. And the hist_entry->nr_rows carries number of direct children.
But in the hierarchy mode, entry can have grand children and callchains.
So update the number properly using hierarchy_count_rows() when toggling
the folded state (by pressing ENTER key).
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-12-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The hierarchy output mode is to group entries so the existing columns
won't fit to the new output. Treat all sort keys as a single column and
separate headers by "/".
# Overhead Command / Shared Object
# ........... ................................
#
15.11% swapper
14.97% [kernel.vmlinux]
0.09% [libahci]
0.05% [iwlwifi]
...
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-11-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The hierarchy output mode is to group entries for each level so that
user can see higher level picture more easily. It also helps to find
out which component is most costly. The output will look like below:
15.11% swapper
14.97% [kernel.vmlinux]
0.09% [libahci]
0.05% [iwlwifi]
10.29% irq/33-iwlwifi
6.45% [kernel.vmlinux]
1.41% [mac80211]
1.15% [iwldvm]
1.14% [iwlwifi]
0.14% [cfg80211]
4.81% firefox
3.92% libxul.so
0.34% [kernel.vmlinux]
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-10-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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It'll be used for hierarchy output mode to indent entries properly.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-9-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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In hierarchy mode, a filter can affect periods of entries in upper
hierarchy. So it needs to resort the hists after filter.
For example, let's look at following example:
Overhead Command / Shared Object / Symbol
------------ --------------------------------
30.00% perf
20.00% perf
10.00% main
5.00% pr_debug
5.00% memcpy
10.00% [kernel.vmlinux]
8.00% memset
2.00% cpu_idle
If we apply simbol filter for 'mem' it should look like this
13.00% perf
8.00% [kernel.vmlinux]
8.00% memset
5.00% perf
5.00% memcpy
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-8-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The hists__filter_hierarchy() function implements filtering in hierarchy
mode. Now we have hist_entry__filter() so use it for entries in the
hierarchy. It returns 3 kind of values.
A negative value means that it's not filtered by this type. It marks
current entry as filtered tentatively so if a lower level entry removes
the filter it also removes the all parent so that we can find the entry
in the output.
Zero means it's filtered out by this type. A positive value means it's
not filtered so it removes the filter and shows in the output. In these
cases, it moves to next entry since lower level entry won't match by
this type of filter anymore. Thus all children will be filtered or not
together.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-7-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The hist_entry__filter() function is to filter hist entries using sort
key related info. This is needed to support hierarchy mode since each
hist entry will be associated with a hpp fmt which has a sort key. So
each entry should compare to only matching type of filters.
To do that, add the ->se_filter callback field to struct sort_entry.
This callback takes 'type' argument which determines whether it's
matching sort key or not. It returns -1 for non-matching type, 0 for
filtered entry and 1 for not filtered entries.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-6-git-send-email-namhyung@kernel.org
[ 'socket' is reserved in sys/socket.h, so replace it with 'sk' ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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git://anongit.freedesktop.org/drm-intel into drm-fixes
This is a bit large, but it really helps Skylake bugs we are seeing
on a number of laptops.
Most of the commits are quite similar, ensuring the display power
doesn't vanish under us during hardware access. Also do note that it's
not just Skylake that's affected.
* tag 'drm-intel-fixes-2016-02-22' of git://anongit.freedesktop.org/drm-intel:
drm/i915/gen9: Verify and enforce dc6 state writes
drm/i915/gen9: Check for DC state mismatch
drm/i915/skl: Ensure HW is powered during DDB HW state readout
drm/i915/lvds: Ensure the HW is powered during HW state readout
drm/i915/hdmi: Ensure the HW is powered during HW state readout
drm/i915/dsi: Ensure the HW is powered during HW state readout
drm/i915/dp: Ensure the HW is powered during HW state readout
drm/i915: Ensure the HW is powered when accessing the CRC HW block
drm/i915/ddi: Ensure the HW is powered during HW state readout
drm/i915/crt: Ensure the HW is powered during HW state readout
drm/i915: Ensure the HW is powered during HW access in assert_pipe
drm/i915: Ensure the HW is powered when disabling VGA
drm/i915/ibx: Ensure the HW is powered during PLL HW readout
drm/i915: Ensure the HW is powered during display pipe HW readout
drm/i915: Add helper to get a display power ref if it was already enabled
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into drm-fixes
A few radeon and amdgpu fixes for 4.5. A few further fixes for the vblank
regressions in 4.4 and a couple of other minor fixes.
* 'drm-fixes-4.5' of git://people.freedesktop.org/~agd5f/linux:
drm/amdgpu: disable direct VM updates when vm_debug is set
amdgpu: fix NULL pointer dereference at tonga_check_states_equal
drm/radeon/pm: adjust display configuration after powerstate
drm/amdgpu/pm: adjust display configuration after powerstate
drm/amdgpu/pm: add some checks for PX
drm/amdgpu: fix locking in force performance level
drm/amdgpu/gfx8: fix priv reg interrupt enable
drm/amdgpu: Don't hang in amdgpu_flip_work_func on disabled crtc.
drm/radeon: Don't hang in radeon_flip_work_func on disabled crtc. (v2)
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
- Fix for csd deadlock due to missing self IPI
- Accompanying IPI cleanups / optimization
- Brown paper bag bug in one of the cleanups above
- Boot reporting updates for new hardware features
- Don't force DEVTMPFS if INITRAMFS
* tag 'arc-4.5-rc6-fixes-upd' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
arc: SMP: CONFIG_ARC_IPI_DBG cleanup
ARC: SMP: No need for CONFIG_ARC_IPI_DBG
ARCv2: Elide sending new cross core intr if receiver didn't ack prev
ARCv2: SMP: Push IPI_IRQ into IPI provider
ARC: [intc-compact] Remove IPI setup from ARCompact port
ARCv2: SMP: Emulate IPI to self using software triggered interrupt
arc: get rid of DEVTMPFS dependency on INITRAMFS_SOURCE
ARCv2: boot report CCMs (Closely Coupled Memories)
ARCv2: boot print Low Latency Memory
ARC: Assume multiplier is always present
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"Assorted fixes - xattr one from this cycle, the rest - stable fodder"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
fs/pnode.c: treat zero mnt_group_id-s as unequal
affs_do_readpage_ofs(): just use kmap_atomic() around memcpy()
xattr handlers: plug a lock leak in simple_xattr_list
fs: allow no_seek_end_llseek to actually seek
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The rb_hierarchy_{next,prev,last} functions are to traverse all hist
entries in a hierarchy. They will be used by various function which
supports hierarchy output.
As the rb_hierarchy_next() is used to traverse the whole hierarchy, it
sometime needs to visit entries regardless of current folding state. So
add enum hierarchy_move_dir and pass it to __rb_hierarchy_next() for
those cases.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-5-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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For hierarchical output, each entry must be sorted in their rbtree
(hroot) properly. Add hists__hierarchy_output_resort() to do the job.
Note that those hierarchy entries share the period counts, it'd be
important to update the hists->stats only once (for leaves).
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Commit d15f9d694b77 ("libceph: check data_len in ->alloc_msg()")
mistakenly bumped the log level on the "tid %llu unknown, skipping"
message. Turn it back into a dout() - stray replies are perfectly
normal when OSDs flap, crash, get killed for testing purposes, etc.
Cc: stable@vger.kernel.org # 4.3+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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ceph_msg_footer is 21 bytes long, while ceph_msg_footer_old is only 13.
Don't skip too much when CEPH_FEATURE_MSG_AUTH isn't negotiated.
Cc: stable@vger.kernel.org # 3.19+
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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The contract between try_read() and try_write() is that when called
each processes as much data as possible. When instructed by osd_client
to skip a message, try_read() is violating this contract by returning
after receiving and discarding a single message instead of checking for
more. try_write() then gets a chance to write out more requests,
generating more replies/skips for try_read() to handle, forcing the
messenger into a starvation loop.
Cc: stable@vger.kernel.org # 3.10+
Reported-by: Varada Kari <Varada.Kari@sandisk.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Tested-by: Varada Kari <Varada.Kari@sandisk.com>
Reviewed-by: Alex Elder <elder@linaro.org>
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Sebastian Ott and Gerald Schaefer reported random crashes on s390.
It was bisected to my THP refcounting patchset.
The problem is that pmdp_invalidated() called with wrong virtual
address. It got offset up by HPAGE_PMD_SIZE by loop over ptes.
The solution is to introduce new variable to be used in loop and don't
touch 'haddr'.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reported-and-tested-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Reported-and-tested-by Sebastian Ott <sebott@linux.vnet.ibm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Cc: Jerome Marchand <jmarchan@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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That should make user space bugs more obvious.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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The event_data passed from pem_fini was not cleared upon initialization.
This caused NULL checks to pass and cast_const_phw_tonga_power_state to
attempt to dereference an invalid pointer. Clear the event_data in
pem_init and pem_fini before calling pem_handle_event.
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Bradley Pankow <btpankow@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
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The GICv3 architecture spec says:
Writing to the active priority registers in any order other than
the following order will result in UNPREDICTABLE behavior:
- ICH_AP0R<n>_EL2.
- ICH_AP1R<n>_EL2.
So let's not pointlessly go against the rule...
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
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http://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.5-rc6
The most important fixes here are:
a) yet another fix to dwc3's EP transfer resource
assignment logic. This time around we will be
pre-allocating transfer resources to avoid any
future issues;
b) two DMA fixes for the old MUSB driver.
c) dwc2's data toggle fix for FS
Other than these, we have a few other minor fixes
elsewhere.
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git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Renesas ARM Based SoC Fixes for v4.5
* Avoid writing to .text
* tag 'renesas-soc-fixes-for-v4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: Remove shmobile_boot_arg
ARM: shmobile: Move shmobile_smp_{mpidr, fn, arg}[] from .text to .bss
ARM: shmobile: r8a7779: Remove remainings of removed SCU boot setup code
ARM: shmobile: Move shmobile_scu_base from .text to .bss
Signed-off-by: Olof Johansson <olof@lixom.net>
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In the hierarchical view, entries will be grouped and sorted on the
first key, and then on the second key, and so on. Add the
he->hroot_{in,out} fields to keep the lower level entries. Actually this
can share space, in a union, with callchain's 'sorted_root' since the
hroots are only used by non-leaf entries and callchain is only used by
leaf entries.
It also adds the 'parent_he' and 'depth' fields which can be used by browsers.
This patch only implements collapsing part which creates internal
entries for each sort key. These need to be sorted by output_sort stage
and to be displayed properly in the later patch(es).
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-3-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The 'trace', 'srcline' and 'srcfile' sort keys updates hist entry's
field later. With the hierarchy mode, those fields are passed to a
matching entry so it needs to identify the sort keys.
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1456326830-30456-2-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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This patch allows 'perf script' output messages from BPF program. For
example, use test_bpf_output_3.c at the end of this commit message,
# ./perf record -e bpf-output/no-inherit,name=evt/ \
-e ./test_bpf_output_3.c/map:channel.event=evt/ \
usleep 100000
# ./perf script
usleep 4882 21384.532523: evt: ffffffff810e97d1 sys_nanosleep ([kernel.kallsyms])
BPF output: 0000: 52 61 69 73 65 20 61 20 Raise a
0008: 42 50 46 20 65 76 65 6e BPF even
0010: 74 21 00 00 t!..
BPF string: "Raise a BPF event!"
usleep 4882 21384.632606: evt: ffffffff8105c609 kretprobe_trampoline_holder ([kernel.kallsyms
BPF output: 0000: 52 61 69 73 65 20 61 20 Raise a
0008: 42 50 46 20 65 76 65 6e BPF even
0010: 74 21 00 00 t!..
BPF string: "Raise a BPF event!"
Two samples from BPF output are printed by both binary and string
format.
If BPF program output something unprintable, string format is
suppressed.
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
#define SEC(NAME) __attribute__((section(NAME), used))
static u64 (*ktime_get_ns)(void) =
(void *)BPF_FUNC_ktime_get_ns;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
static int (*get_smp_processor_id)(void) =
(void *)BPF_FUNC_get_smp_processor_id;
static int (*perf_event_output)(void *, struct bpf_map_def *, int, void *, unsigned long) =
(void *)BPF_FUNC_perf_event_output;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(u32),
.max_entries = __NR_CPUS__,
};
static inline int __attribute__((always_inline))
func(void *ctx, int type)
{
char output_str[] = "Raise a BPF event!";
perf_event_output(ctx, &channel, get_smp_processor_id(),
&output_str, sizeof(output_str));
return 0;
}
SEC("func_begin=sys_nanosleep")
int func_begin(void *ctx) {return func(ctx, 1);}
SEC("func_end=sys_nanosleep%return")
int func_end(void *ctx) { return func(ctx, 2);}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456312845-111583-3-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Move code printing binray data from trace_event() to utils.c and allows
passing different printer. Further commits will use this logic to print
bpf output event.
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Li Zefan <lizefan@huawei.com>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1456312845-111583-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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The ftrace:function event is only displayed for parsing the function tracer
data. It is not used to enable function tracing, and does not include an
"enable" file in its event directory.
Originally, this event was kept separate from other events because it did
not have a ->reg parameter. But perf added a "reg" parameter for its use
which caused issues, because it made the event available to functions where
it was not compatible for.
Commit 9b63776fa3ca9 "tracing: Do not enable function event with enable"
added a TRACE_EVENT_FL_IGNORE_ENABLE flag that prevented the function event
from being enabled by normal trace events. But this commit missed keeping
the function event from being displayed by the "available_events" directory,
which is used to show what events can be enabled by set_event.
One documented way to enable all events is to:
cat available_events > set_event
But because the function event is displayed in the available_events, this
now causes an INVALID error:
cat: write error: Invalid argument
Reported-by: Chunyu Hu <chuhu@redhat.com>
Fixes: 9b63776fa3ca9 "tracing: Do not enable function event with enable"
Cc: stable@vger.kernel.org # 3.4+
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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In async_pf we try to allocate with NOWAIT to get an element quickly
or fail. This code also handle failures gracefully. Lets silence
potential page allocation failures under load.
qemu-system-s39: page allocation failure: order:0,mode:0x2200000
[...]
Call Trace:
([<00000000001146b8>] show_trace+0xf8/0x148)
[<000000000011476a>] show_stack+0x62/0xe8
[<00000000004a36b8>] dump_stack+0x70/0x98
[<0000000000272c3a>] warn_alloc_failed+0xd2/0x148
[<000000000027709e>] __alloc_pages_nodemask+0x94e/0xb38
[<00000000002cd36a>] new_slab+0x382/0x400
[<00000000002cf7ac>] ___slab_alloc.constprop.30+0x2dc/0x378
[<00000000002d03d0>] kmem_cache_alloc+0x160/0x1d0
[<0000000000133db4>] kvm_setup_async_pf+0x6c/0x198
[<000000000013dee8>] kvm_arch_vcpu_ioctl_run+0xd48/0xd58
[<000000000012fcaa>] kvm_vcpu_ioctl+0x372/0x690
[<00000000002f66f6>] do_vfs_ioctl+0x3be/0x510
[<00000000002f68ec>] SyS_ioctl+0xa4/0xb8
[<0000000000781c5e>] system_call+0xd6/0x264
[<000003ffa24fa06a>] 0x3ffa24fa06a
Cc: stable@vger.kernel.org
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Dominik Dingel <dingel@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Commit e8dd2d2d641c ("Silence compiler warning in arch/x86/kvm/emulate.c",
2015-09-06) broke boot of the Hurd. The bug is that the "default:"
case actually could modify "la", but after the patch this change is
not reflected in *linear.
The bug is visible whenever a non-zero segment base causes the linear
address to wrap around the 4GB mark.
Fixes: e8dd2d2d641cb2724ee10e76c0ad02e04289c017
Cc: stable@vger.kernel.org
Reported-by: Aurelien Jarno <aurelien@aurel32.net>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Sometimes when setting a breakpoint a process doesn't stop on it.
This is because the debug registers are not loaded correctly on
VCPU load.
The following simple reproducer from Oleg Nesterov tries using debug
registers in two threads. To see the bug, run a 2-VCPU guest with
"taskset -c 0" and run "./bp 0 1" inside the guest.
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/wait.h>
#include <sys/ptrace.h>
#include <sys/user.h>
#include <asm/debugreg.h>
#include <assert.h>
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
unsigned long encode_dr7(int drnum, int enable, unsigned int type, unsigned int len)
{
unsigned long dr7;
dr7 = ((len | type) & 0xf)
<< (DR_CONTROL_SHIFT + drnum * DR_CONTROL_SIZE);
if (enable)
dr7 |= (DR_GLOBAL_ENABLE << (drnum * DR_ENABLE_SIZE));
return dr7;
}
int write_dr(int pid, int dr, unsigned long val)
{
return ptrace(PTRACE_POKEUSER, pid,
offsetof (struct user, u_debugreg[dr]),
val);
}
void set_bp(pid_t pid, void *addr)
{
unsigned long dr7;
assert(write_dr(pid, 0, (long)addr) == 0);
dr7 = encode_dr7(0, 1, DR_RW_EXECUTE, DR_LEN_1);
assert(write_dr(pid, 7, dr7) == 0);
}
void *get_rip(int pid)
{
return (void*)ptrace(PTRACE_PEEKUSER, pid,
offsetof(struct user, regs.rip), 0);
}
void test(int nr)
{
void *bp_addr = &&label + nr, *bp_hit;
int pid;
printf("test bp %d\n", nr);
assert(nr < 16); // see 16 asm nops below
pid = fork();
if (!pid) {
assert(ptrace(PTRACE_TRACEME, 0,0,0) == 0);
kill(getpid(), SIGSTOP);
for (;;) {
label: asm (
"nop; nop; nop; nop;"
"nop; nop; nop; nop;"
"nop; nop; nop; nop;"
"nop; nop; nop; nop;"
);
}
}
assert(pid == wait(NULL));
set_bp(pid, bp_addr);
for (;;) {
assert(ptrace(PTRACE_CONT, pid, 0, 0) == 0);
assert(pid == wait(NULL));
bp_hit = get_rip(pid);
if (bp_hit != bp_addr)
fprintf(stderr, "ERR!! hit wrong bp %ld != %d\n",
bp_hit - &&label, nr);
}
}
int main(int argc, const char *argv[])
{
while (--argc) {
int nr = atoi(*++argv);
if (!fork())
test(nr);
}
while (wait(NULL) > 0)
;
return 0;
}
Cc: stable@vger.kernel.org
Suggested-by: Nadav Amit <namit@cs.technion.ac.il>
Reported-by: Andrey Wagin <avagin@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Adding support to display data_src values, for events with data_src data
in sample.
Example:
$ perf script
...
rcuos/3 32 [002] ... 68501042 Local RAM hit|SNP None or Hit|TLB L1 or L2 hit|LCK No ...
rcuos/3 32 [002] ... 68100142 L1 hit|SNP None|TLB L1 or L2 hit|LCK No ...
swapper 0 [002] ... 68100242 LFB hit|SNP None|TLB L1 or L2 hit|LCK No ...
swapper 0 [000] ... 68100142 L1 hit|SNP None|TLB L1 or L2 hit|LCK No ...
swapper 0 [000] ... 50100142 L1 hit|SNP None|TLB L2 miss|LCK No ...
rcuos/3 32 [002] ... 68100142 L1 hit|SNP None|TLB L1 or L2 hit|LCK No ...
plugin-containe 16538 [000] ... 6a100142 L1 hit|SNP None|TLB L1 or L2 hit|LCK Yes ...
gkrellm 1736 [000] ... 68100242 LFB hit|SNP None|TLB L1 or L2 hit|LCK No ...
gkrellm 1736 [000] ... 6a100142 L1 hit|SNP None|TLB L1 or L2 hit|LCK Yes ...
^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
data_src value data_src translation
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-14-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Moving strncat call into scnprintf to easily track number of displayed
bytes. It will be used in following patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-13-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Moving strncat/strcpy calls into scnprintf to easily track number of
displayed bytes. It will be used in following patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-12-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Moving strncat/strcpy calls into scnprintf to easily track number of
displayed bytes. It will be used in following patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-11-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Moving strncat/strcpy calls into scnprintf to easily track
number of displayed bytes. It will be used in following patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-10-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Move meminfo's lck display function into mem-events.c object, so it
could be reused later from script code.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-9-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Move meminfo's snp display function into mem-events.c object, so it
could be reused later from script code.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-8-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Move meminfo's lvl display function into mem-events.c object, so it
could be reused later from script code.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-7-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Move meminfo's tlb display function into mem-events.c object, so it
could be reused later from script code.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-6-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Wrap perf_mem_events[].name into perf_mem_events__name() so we could alter the
events name if needed.
This will be handy when changing latency settings for loads event in following
patch.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Check if current kernel support available memory events and display the
status within -e list option:
$ perf mem record -e list
ldlat-loads : available
ldlat-stores : available
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/r/1456303616-26926-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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