Each histogram entry has a callchain root that stores the
callchain samples. However we forgot to initialize the
tracking of children hits of these roots, which then got
random values on their creation.
The root children hits is multiplied by the minimum percentage
of hits provided by the user, and the result becomes the minimum
hits expected from children branches. If the random value due
to the uninitialization is big enough, then this minimum number
of hits can be huge and eventually filter every children branches.
The end result was invisible callchains. All we need to
fix this is to initialize the children hits of the root.
Reported-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Frederic 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: 2.6.32.x-2.6.35.y <stable@kernel.org>
Parts of the build process were generating files outside the specified
O= directory, causing the build to fail on systems where the sources are
in a read only file system.
Fix it by using $(OUTPUT) on these locations.
Also check that $(OUTPUT) actually exists, just like the top level
kernel Makefile does. Otherwise the failure message emitted is
completely misleading.
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <20100817140841.0859362C03A@msa106.auone-net.jp>
Signed-off-by: Kusanagi Kouichi <slash@ac.auone-net.jp>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
POSIX sh does not specify the brace expansion, so fix it by replacing the
global $(shell ...) lines quite at the top creating the output directories with
real rules.
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Kusanagi Kouichi <slash@ac.auone-net.jp>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1282046280.5822.4.camel@thorin>
Signed-off-by: Bernd Petrovitsch <bernd@sysprog.at>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
As part of ongoing effort to reduce the coupling with libnewt, browsers
are being changed to return the exit key.
The annotate browser is not returning it as expected by builtin-annotate
when annotating multiple symbols (when 'perf annotate' is called without
specifying a symbol name).
Fix it by returning the exit key and also adding the RIGHT key as a exit
key so that going to the next symbol in the TUI can work again.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit:
de5d9bf: Move list types from <linux/list.h> to <linux/types.h>.
Moved the list head data types out of list.h, breaking the build.
Add them to the perf types.h as well.
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
So that the common tasks of providing a helpline at __run entry and
destroying the window and releasing resourses at exit can be abstracted
away, reducing a bit more the coupling with libnewt.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
The annotate TUI now starts centered on the line with most samples, i.e.
the hottest line in the annotated function. Pressing TAB will center on
the second hottest function and so on. Shift+TAB goes in the other
direction.
This way one can more easily sift thru the function hotspots.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Right now it will just sort and position at the hottest line, i.e.
the one where more samples were taken.
It will be at the center of the screen and later TAB/shift-TAB will
cycle thru the hottest lines.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
ARM ELF files use symbols with special names $a, $t, $d to identify regions of
ARM code, Thumb code and data within code sections. This can cause confusing
output from the perf tools, especially for partially stripped binaries, or
binaries containing user-added zero-sized symbols (which may occur in
hand-written assembler which hasn't been fully annotated with .size
directives).
This patch filters out these symbols at load time.
LKML-Reference: <1281352878-8735-2-git-send-email-dave.martin@linaro.org>
Signed-off-by: Dave Martin <dave.martin@linaro.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (82 commits)
firewire: core: add forgotten dummy driver methods, remove unused ones
firewire: add isochronous multichannel reception
firewire: core: small clarifications in core-cdev
firewire: core: remove unused code
firewire: ohci: release channel in error path
firewire: ohci: use memory barriers to order descriptor updates
tools/firewire: nosy-dump: increment program version
tools/firewire: nosy-dump: remove unused code
tools/firewire: nosy-dump: use linux/firewire-constants.h
tools/firewire: nosy-dump: break up a deeply nested function
tools/firewire: nosy-dump: make some symbols static or const
tools/firewire: nosy-dump: change to kernel coding style
tools/firewire: nosy-dump: work around segfault in decode_fcp
tools/firewire: nosy-dump: fix it on x86-64
tools/firewire: add userspace front-end of nosy
firewire: nosy: note ioctls in ioctl-number.txt
firewire: nosy: use generic printk macros
firewire: nosy: endianess fixes and annotations
firewire: nosy: annotate __user pointers and __iomem pointers
firewire: nosy: fix device shutdown with active client
...
As new TUI features get added the newt.c file is growing a lot and its
name is growing misleading as an effort is being made to reduce the
coupling with libnewt.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
So that building other browser based on structures linked via a linked
list can be as easy as it is already for the ones linked via an rb_tree.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
