Arnaldo Carvalho de Melo
3d39ac5386
perf machine: No need to have two DSOs lists
...
We can, given a DSO, figure out if it is a kernel, a kernel module or
a userlevel DSO, so stop having to process two lists in several
functions.
If searching becomes an issue at some point, we can have them in a
rbtree, etc.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-s4yb0onpdywu6dj2xl9lxi4t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-29 12:43:43 -03:00
Arnaldo Carvalho de Melo
84c2cafa28
perf tools: Reference count struct map
...
We have pointers to struct map instances in several places, like in the
hist_entry instances, so we need a way to know when we can destroy them,
otherwise we may either keep leaking them or end up referencing deleted
instances.
Start fixing it by reference counting them.
This patch puts the reference count for struct map in place, replacing
direct map__delete() calls with map__put() ones and then grabbing a
reference count when adding it to the maps struct where maps for a
struct thread are kept.
Next we'll grab reference counts when setting pointers to struct map
instances, in places like in the hist_entry code.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-wi19xczk0t2a41r1i2chuio5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-27 20:27:30 -03:00
Arnaldo Carvalho de Melo
facf3f0621
perf tools: Check if a map is still in use when deleting it
...
I.e. match RB_CLEAR_NODE() with RB_EMPTY_NODE(), to check that it isn't
in a rb tree at the time of its deletion.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-vumvhird765id11zbx00d2r8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-27 20:27:16 -03:00
Arnaldo Carvalho de Melo
6a2ffcddad
perf tools: Protect accesses the map rbtrees with a rw lock
...
To allow concurrent access, next step: refcount struct map instances, so
that we can ditch maps->removed_maps and stop leaking threads, maps,
then struct DSO needs the same treatment.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-o45w2w5dzrza38nzqxnqzhyf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-27 20:25:16 -03:00
Arnaldo Carvalho de Melo
1eee78aea9
perf tools: Introduce struct maps
...
That for now has the maps rbtree and the list for the dead maps, that
may be still referenced from some hist_entry, etc.
This paves the way for protecting the rbtree with a lock, then refcount
the maps and finally remove the removed_maps list, as it'll not ne
anymore needed.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-fl0fa6142pj8khj97fow3uw0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-27 20:21:41 -03:00
Arnaldo Carvalho de Melo
4bb7123dcf
perf tools: Use maps__first()/map__next()
...
In a few more remaining places, for consistency.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-c2n7slwtto29wndfttdrhfrx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-27 12:21:45 -03:00
Arnaldo Carvalho de Melo
f7e365eb61
perf tools: Nuke unused map_groups__flush()
...
Since:
9fdbf671baadrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Luigi Semenzato <semenzato@chromium.org >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-hsac1t42ehtva8gut8qe6hih@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-27 12:21:44 -03:00
Arnaldo Carvalho de Melo
4d4dee9a96
perf tools: Rename maps__next
...
It really is a 'struct map' method, and since we're introducing a new
'struct maps' class, fix it to avoid confusion.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-xo9ifhk53cfl30wqcuhxpnvl@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-27 12:21:44 -03:00
Arnaldo Carvalho de Melo
848cbd2562
perf tools: Use atomic.h for the map_groups refcount
...
Now that we have atomic.h, we should convert all of the existing
refcounts to use it.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-onm5u3pioba1hqqhjs8on03e@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-15 15:20:44 -03:00
Naveen N. Rao
031b84c407
perf probe ppc: Enable matching against dot symbols automatically
...
Allow perf probe to work on ppc ABIv1 without the need to specify the
leading dot '.' for functions. 'perf probe do_fork' works with this
patch.
We do this by changing how symbol name comparison works on ppc ABIv1 -
we simply ignore and skip over the initial dot, if one exists, during
symbol name comparison.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com >
Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com >
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com >
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com >
Cc: Michael Ellerman <mpe@ellerman.id.au >
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com >
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/652a8f3bfa919bd02a1836a128370eaed59b4a34.1430217967.git.naveen.n.rao@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-05-04 12:43:44 -03:00
Wang Nan
ba92732e98
perf kmaps: Check kmaps to make code more robust
...
This patch add checks in places where map__kmap is used to get kmaps
from struct kmap.
Error messages are added at map__kmap to warn invalid accessing of kmap
(for the case of !map->dso->kernel, kmap(map) does not exists at all).
Also, introduces map__kmaps() to warn uninitialized kmaps.
Reviewed-by: Ingo Molnar <mingo@kernel.org >
Signed-off-by: Wang Nan <wangnan0@huawei.com >
Cc: pi3orama@163.com
Cc: Jiri Olsa <jolsa@kernel.org >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Zefan Li <lizefan@huawei.com >
Link: http://lkml.kernel.org/r/1428394966-131044-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2015-04-08 09:07:03 -03:00
Andi Kleen
85c116a6cb
perf callchain: Make get_srcline fall back to sym+offset
...
When the source line is not found fall back to sym + offset. This is
generally much more useful than a raw address.
For this we need to pass in the symbol from the caller.
For some callers it's awkward to compute, so we stay at the old
behaviour.
Signed-off-by: Andi Kleen <ak@linux.intel.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Link: http://lkml.kernel.org/r/1415844328-4884-10-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-11-24 18:03:47 -03:00
Arnaldo Carvalho de Melo
11246c708a
perf tools: Set thread->mg.machine in all places
...
We were setting this only in machine__init(), i.e. for the map_groups that
holds the kernel module maps, not for the one used for a thread's executable
mmaps.
Now we are sure that we can obtain the machine where a thread is by going
via thread->mg->machine, thus we can, in the following patch, make all
codepaths that receive machine _and_ thread, drop the machine one.
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Borislav Petkov <bp@suse.de >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jean Pihet <jean.pihet@linaro.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-y6zgaqsvhrf04v57u15e4ybm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-10-29 10:32:46 -02:00
Namhyung Kim
4955ea225d
perf tools: Fixup off-by-one comparision in maps__find
...
map->end is the first addr _outside_ the a map, following the convention
of vm_area_struct->vm_end.
Signed-off-by: Namhyung Kim <namhyung@kernel.org >
Acked-by: Stephane Eranian <eranian@google.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/8761fwh1nc.fsf@sejong.aot.lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-10-14 17:50:56 -03:00
Stephane Eranian
77faf4d060
perf tools: fix off-by-one error in maps
...
This patch fixes off-by-one errors in the management of maps.
A map is defined by start address and length as implemented by
map__new():
map__init(map, type, start, start + len, pgoff, dso);
map->start = addr;
map->end = end;
Consequently, the actual address range is [start; end[ map->end is the
first byte outside the range.
This patch fixes two bugs where upper bound checking was off-by-one.
In V2, we fix map_groups__fixup_overlappings() some more where
map->start was off-by-one as reported by Jiri.
Signed-off-by: Stephane Eranian <eranian@google.com >
Acked-by: Namhyung Kim <namhyung@kernel.org >
Cc: David Ahern <dsahern@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Link: http://lkml.kernel.org/r/20141006083532.GA4850@quad
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-10-14 17:50:55 -03:00
Don Zickus
700be56430
perf symbols: Don't try to find DSOs in SYSV maps
...
We are seeing a lot of the following with regards to SYSV memory
Failed to open /SYSV0000279c, continuing without symbols
We don't believe this memory will have DSO info, so treat it like the
heap and stack for now and skip it to prevent the warning.
Signed-off-by: Don Zickus <dzickus@redhat.com >
Signed-off-by: Joe Mario <jmario@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Joe Mario <jmario@redhat.com >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1408501874-244377-1-git-send-email-dzickus@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-08-20 08:26:09 -03:00
Adrian Hunter
5835eddab6
perf tools: Add thread parameter to vdso__dso_findnew()
...
The thread will be needed to determine the VDSO type.
Reviewed-by: Jiri Olsa <jolsa@redhat.com >
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1406035081-14301-52-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-07-23 17:37:26 -03:00
Adrian Hunter
2a03068c5c
perf tools: Pass machine to vdso__dso_findnew()
...
This is preparation for removing the global variables used in vdso.c and
thereby fixing the lifetime of the VDSO temporary file.
Reviewed-by: Jiri Olsa <jolsa@redhat.com >
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1406035081-14301-45-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-07-23 16:45:50 -03:00
Jiri Olsa
acebd408be
perf tools: Remove verbose from functions prototypes
...
And use verbose as an global object in following functions:
__map_groups__fprintf_maps
__map_groups__fprintf_removed_maps
map_groups__fprintf_maps
map_groups__fprintf
Also making map_groups__fprintf_maps static.
Signed-off-by: Jiri Olsa <jolsa@kernel.org >
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1405374411-29012-2-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-07-17 11:04:42 -03:00
Adrian Hunter
29ce36121e
perf machine: Fix map groups of threads with unknown pids
...
Events like sched_switch do not provide a pid (tgid) which can result in
threads with an unknown pid. If the pid is later discovered, join the
map groups.
Note the thread's map groups should be empty because they are populated
by MMAP events which do provide the pid and tid.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1405498033-23817-1-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-07-17 10:31:02 -03:00
Don Zickus
7ef807034e
perf tools: Update mmap2 interface with protection and flag bits
...
The kernel piece passes more info now. Update the perf tool to reflect
that and adjust the synthesized maps to play along.
Signed-off-by: Don Zickus <dzickus@redhat.com >
Link: http://lkml.kernel.org/r/1400526833-141779-4-git-send-email-dzickus@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org >
2014-06-09 13:34:45 +02:00
Michael Lentine
eca8183699
perf tools: Add automatic remapping of Android libraries
...
This patch automatically adjusts the path of MMAP records
associated with Android system libraries.
The Android system is organized with system libraries found in
/system/lib and user libraries in /data/app-lib. On the host system
(not running Android), system libraries can be found in the downloaded
NDK directory under ${NDK_ROOT}/platforms/${APP_PLATFORM}/arch-${ARCH}/usr/lib
and the user libraries are installed under libs/${APP_ABI} within
the apk build directory. This patch makes running the reporting
tools possible on the host system using the libraries from the NDK.
Signed-off-by: Michael Lentine <mlentine@google.com >
Reviewed-by: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1400579330-5043-3-git-send-email-eranian@google.com
[ fixed 'space required before the open parenthesis' checkpatch.pl errors ]
Signed-off-by: Jiri Olsa <jolsa@kernel.org >
2014-05-21 15:03:25 +02:00
Arnaldo Carvalho de Melo
a26ca6716a
perf tools: Reference count map_groups objects
...
We will share it among threads in the same process.
Adding map_groups__get/map_groups__put interface for that.
Signed-off-by: Arnaldo Carvalho de Melo <acme@kernel.org >
Acked-by: Namhyung Kim <namhyung@kernel.org >
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1397490723-1992-4-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org >
2014-04-28 13:43:26 +02:00
Arnaldo Carvalho de Melo
93d5731dcb
perf tools: Allocate thread map_groups's dynamically
...
Moving towards sharing map groups within a process threads.
Because of this we need the map groups to be dynamically allocated. No
other functional change is intended in here.
Based on a patch by Jiri Olsa, but this time _just_ making the
conversion from statically allocating thread->mg to turning it into a
pointer and instead of initializing it at thread's constructor,
introduce a constructor/destructor for the map_groups class and
call at thread creation time.
Later we will introduce the get/put methods when we move to sharing
those map_groups, when the get/put refcounting semantics will be needed.
Signed-off-by: Arnaldo Carvalho de Melo <acme@kernel.org >
Acked-by: Namhyung Kim <namhyung@kernel.org >
Cc: Adrian Hunter <adrian.hunter@intel.com >
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Don Zickus <dzickus@redhat.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1397490723-1992-3-git-send-email-jolsa@redhat.com
Signed-off-by: Jiri Olsa <jolsa@kernel.org >
2014-04-28 13:43:20 +02:00
Adrian Hunter
9176753d1e
perf symbols: Fix symbol annotation for relocated kernel
...
Kernel maps map memory addresses to file offsets.
For symbol annotation, objdump needs the object VMA addresses. For an
unrelocated kernel, that is the same as the memory address.
The addresses passed to objdump for symbol annotation did not take into
account kernel relocation.
This patch fixes that.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org >
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Tested-by: Jiri Olsa <jolsa@redhat.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1391004884-10334-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-01-31 17:21:47 -03:00
Masami Hiramatsu
4afc81cd1c
perf symbols: Load map before using map->map_ip()
...
In map_groups__find_symbol() map->map_ip is used without ensuring the
map is loaded. Then the address passed to map->map_ip isn't mapped at
the first time.
E.g. below code always fails to get a symbol at the first call;
addr = /* Somewhere in the kernel text */
symbol_conf.try_vmlinux_path = true;
symbol__init();
host_machine = machine__new_host();
sym = machine__find_kernel_function(host_machine,
addr, NULL, NULL);
/* Note that machine__find_kernel_function calls
map_groups__find_symbol */
This ensures it by calling map__load before using it in
map_groups__find_symbol().
Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com >
Cc: "David A. Long" <dave.long@linaro.org >
Cc: David Ahern <dsahern@gmail.com >
Cc: Ingo Molnar <mingo@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Oleg Nesterov <oleg@redhat.com >
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com >
Cc: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org >
Cc: yrl.pp-manager.tt@hitachi.com
Link: http://lkml.kernel.org/r/20140123022950.7206.17357.stgit@kbuild-fedora.yrl.intra.hitachi.co.jp
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-01-23 15:48:12 -03:00
Namhyung Kim
578c03c86f
perf symbols: Fix JIT symbol resolution on heap
...
Gaurav reported that perf cannot profile JIT program if it executes the
code on heap. This was because current map__new() only handle JIT on
anon mappings - extends it to handle no_dso (heap, stack) case too.
This patch assumes JIT profiling only provides dynamic function symbols
so check the mapping type to distinguish the case. It'd provide no
symbols for data mapping - if we need to support symbols on data
mappings later it should be changed.
Reported-by: Gaurav Jain <gjain@fb.com >
Signed-off-by: Namhyung Kim <namhyung@kernel.org >
Tested-by: Gaurav Jain <gjain@fb.com >
Cc: Andi Kleen <andi@firstfloor.org >
Cc: David Ahern <dsahern@gmail.com >
Cc: Gaurav Jain <gjain@fb.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung.kim@lge.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1389836971-3549-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2014-01-21 10:56:05 -03:00
Adrian Hunter
cc8fae1d81
perf script: Add an option to print the source line number
...
Add field 'srcline' that displays the source file name and line number
associated with the sample ip. The information displayed is the same as
from addr2line.
$ perf script -f comm,tid,pid,time,ip,sym,dso,symoff,srcline
grep 10701/10701 2497321.421013: ffffffff81043ffa native_write_msr_safe+0xa ([kernel.kallsyms])
/usr/src/debug/kernel-3.9.fc17/linux-3.9.10-100.fc17.x86_64/arch/x86/include/asm/msr.h:95
grep 10701/10701 2497321.421984: ffffffff8165b6b3 _raw_spin_lock+0x13 ([kernel.kallsyms])
/usr/src/debug/kernel-3.9.fc17/linux-3.9.10-100.fc17.x86_64/arch/x86/include/asm/spinlock.h:54
grep 10701/10701 2497321.421990: ffffffff810b64b3 tick_sched_timer+0x53 ([kernel.kallsyms])
/usr/src/debug/kernel-3.9.fc17/linux-3.9.10-100.fc17.x86_64/kernel/time/tick-sched.c:840
grep 10701/10701 2497321.421992: ffffffff8106f63f run_timer_softirq+0x2f ([kernel.kallsyms])
/usr/src/debug/kernel-3.9.fc17/linux-3.9.10-100.fc17.x86_64/kernel/timer.c:1372
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: Andi Kleen <ak@linux.intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1386315778-11633-3-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-12-09 14:47:15 -03:00
Adrian Hunter
1d5077bdd9
perf annotate: Another fix for annotate_browser__callq()
...
The target address is provided by objdump and is not necessary a memory
address. Add a helper to get the correct address.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1381747424-3557-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-10-14 12:21:18 -03:00
Arnaldo Carvalho de Melo
4e98771274
perf symbols: Add map_groups__find_ams()
...
Add a function to find a symbol using an ip that might be on a different
map.
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1381747424-3557-2-git-send-email-adrian.hunter@intel.com
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-10-14 10:29:02 -03:00
Ingo Molnar
89fe808ae7
tools/perf: Standardize feature support define names to: HAVE_{FEATURE}_SUPPORT
...
Standardize all the feature flags based on the HAVE_{FEATURE}_SUPPORT naming convention:
HAVE_ARCH_X86_64_SUPPORT
HAVE_BACKTRACE_SUPPORT
HAVE_CPLUS_DEMANGLE_SUPPORT
HAVE_DWARF_SUPPORT
HAVE_ELF_GETPHDRNUM_SUPPORT
HAVE_GTK2_SUPPORT
HAVE_GTK_INFO_BAR_SUPPORT
HAVE_LIBAUDIT_SUPPORT
HAVE_LIBELF_MMAP_SUPPORT
HAVE_LIBELF_SUPPORT
HAVE_LIBNUMA_SUPPORT
HAVE_LIBUNWIND_SUPPORT
HAVE_ON_EXIT_SUPPORT
HAVE_PERF_REGS_SUPPORT
HAVE_SLANG_SUPPORT
HAVE_STRLCPY_SUPPORT
Cc: Arnaldo Carvalho de Melo <acme@redhat.com >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: David Ahern <dsahern@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Link: http://lkml.kernel.org/n/tip-u3zvqejddfZhtrbYbfhi3spa@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org >
2013-10-09 08:48:28 +02:00
Stephane Eranian
5c5e854bc7
perf tools: Add attr->mmap2 support
...
This patch adds support for the new PERF_RECORD_MMAP2 record type
exposed by the kernel. This is an extended PERF_RECORD_MMAP record.
It adds for each file-backed mapping the device major, minor number and
the inode number and generation.
This triplet uniquely identifies the source of a file-backed mapping. It
can be used to detect identical virtual mappings between processes, for
instance.
The patch will prefer MMAP2 over MMAP.
Signed-off-by: Stephane Eranian <eranian@google.com >
Cc: Andi Kleen <ak@linux.intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Ingo Molnar <mingo@elte.hu >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung.kim@lge.com >
Cc: Peter Zijlstra <peterz@infradead.org >
Link: http://lkml.kernel.org/r/1377079825-19057-3-git-send-email-eranian@google.com
[ Cope with 314add6acme@redhat.com >
2013-09-11 10:09:32 -03:00
Adrian Hunter
8e0cf965f9
perf symbols: Add support for reading from /proc/kcore
...
In the absence of vmlinux, perf tools uses kallsyms for symbols. If the
user has access, now also map to /proc/kcore.
The dso data_type is now set to either DSO_BINARY_TYPE__KCORE or
DSO_BINARY_TYPE__GUEST_KCORE as approprite.
This patch breaks the "vmlinux symtab matches kallsyms" test. That is
fixed in a following patch.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1375875537-4509-8-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-08-07 17:35:33 -03:00
Adrian Hunter
0131c4ec79
perf tools: Make it possible to read object code from kernel modules
...
The new "object code reading" test shows that it is not possible to read
object code from kernel modules. That is because the mappings do not
map to the dsos. This patch fixes that.
This involves identifying and flagging relocatable (ELF type ET_REL)
files (e.g. kernel modules) for symbol adjustment and updating
map__rip_2objdump() accordingly. The kmodule parameter of
dso__load_sym() is taken into use and the module map altered to map to
the dso.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1375875537-4509-7-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-08-07 17:35:32 -03:00
Adrian Hunter
39b12f7812
perf tools: Make it possible to read object code from vmlinux
...
The new "object code reading" test shows that it is not possible to read
object code from vmlinux. That is because the mappings do not map to
the dso. This patch fixes that.
A side-effect of changing the kernel map is that the "reloc" offset must
be taken into account. As a result of that separate map functions for
relocation are no longer needed.
Also fixing up the maps to match the symbols no longer makes sense and
so is not done.
The vmlinux dso data_type is now set to either DSO_BINARY_TYPE__VMLINUX
or DSO_BINARY_TYPE__GUEST_VMLINUX as approprite, which enables the
correct file name to be determined by dso__binary_type_file().
This patch breaks the "vmlinux symtab matches kallsyms" test. That is
fixed in a following patch.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1375875537-4509-4-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-08-07 17:35:31 -03:00
Andi Kleen
89365e6c9a
perf tools: Handle JITed code in shared memory
...
Need to check for /dev/zero.
Most likely more strings are missing too.
Signed-off-by: Andi Kleen <ak@linux.intel.com >
Link: http://lkml.kernel.org/r/1366848182-30449-1-git-send-email-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-05-28 16:23:58 +03:00
Arnaldo Carvalho de Melo
8e16017d49
perf tools: Use memdup in map__clone
...
We have memdup() exactly for that, remove open coded dup.
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-tnsoexrgv6u9l125srq2c7su@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-01-25 12:49:28 -03:00
Arnaldo Carvalho de Melo
237a7e04a1
perf tools: Stop using 'self' in map.[ch]
...
As suggested by tglx, 'self' should be replaced by something that is
more useful.
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-vse2c54m0yahx6p79tmoel03@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-01-25 12:49:28 -03:00
Joshua Zhu
d0528b5d71
perf tools: Add anonymous huge page recognition
...
Judging anonymous memory's vm_area_struct, perf_mmap_event's filename
will be set to "//anon" indicating this vma belongs to anonymous
memory.
Once hugepage is used, vma's vm_file points to hugetlbfs. In this way,
this vma will not be regarded as anonymous memory by is_anon_memory() in
perf user space utility.
Signed-off-by: Joshua Zhu <zhu.wen-jie@hp.com >
Cc: Akihiro Nagai <akihiro.nagai.hw@hitachi.com >
Cc: Andi Kleen <andi@firstfloor.org >
Cc: David Ahern <dsahern@gmail.com >
Cc: Ingo Molnar <mingo@redhat.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Joshua Zhu <zhu.wen-jie@hp.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1357363797-3550-1-git-send-email-zhu.wen-jie@hp.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2013-01-24 16:40:19 -03:00
Arnaldo Carvalho de Melo
69d2591a82
perf machine: Move more methods to machine.[ch]
...
This time out of map.[ch] mostly, just code move plus a buch of 'self'
removal, using machine or machines instead.
Cc: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Mike Galbraith <efault@gmx.de >
Cc: Namhyung Kim <namhyung@gmail.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/n/tip-j1vtux3vnu6wzmrjutpxnjcz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-11-09 11:32:52 -03:00
Namhyung Kim
1e82574d1d
perf tools: Fix detection of stack area
...
Output of /proc/<pid>/maps contains helpful information to anonymous
mappings like stack, heap, ... For the case of stack, it can show
multiple stack area for each thread in the process:
$ cat /proc/$(pidof gnome-shell)/maps | grep stack
7fe019946000-7fe01a146000 rw-p 00000000 00:00 0 [stack:1624]
7fe040e32000-7fe041632000 rw-p 00000000 00:00 0 [stack:1451]
7fe041643000-7fe041e43000 rw-p 00000000 00:00 0 [stack:1450]
7fe04204b000-7fe04284b000 rw-p 00000000 00:00 0 [stack:1449]
7fe042a7e000-7fe04327e000 rw-p 00000000 00:00 0 [stack:1446]
7fe0432ff000-7fe043aff000 rw-p 00000000 00:00 0 [stack:1445]
7fe043b00000-7fe044300000 rw-p 00000000 00:00 0 [stack:1444]
7fe044301000-7fe044b01000 rw-p 00000000 00:00 0 [stack:1443]
7fe044b02000-7fe045302000 rw-p 00000000 00:00 0 [stack:1442]
7fe045303000-7fe045b03000 rw-p 00000000 00:00 0 [stack:1441]
7fe045b04000-7fe046304000 rw-p 00000000 00:00 0 [stack:1440]
7fe046305000-7fe046b05000 rw-p 00000000 00:00 0 [stack:1439]
7fe046b06000-7fe047306000 rw-p 00000000 00:00 0 [stack:1438]
7fff4b16f000-7fff4b190000 rw-p 00000000 00:00 0 [stack]
However perf only knew about the main thread's. Fix it.
Signed-off-by: Namhyung Kim <namhyung@kernel.org >
Cc: Andi Kleen <ak@linux.intel.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Stephane Eranian <eranian@google.com >
Link: http://lkml.kernel.org/r/1352273234-28912-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-11-08 11:59:32 -03:00
Jiri Olsa
ebb296c276
perf tools: Move build_id__sprintf into build-id object
...
Moving build_id__sprintf function into build-id object.
Signed-off-by: Jiri Olsa <jolsa@redhat.com >
Reviewed-by: Namhyung Kim <namhyung@kernel.org >
Tested-by: Namhyung Kim <namhyung@kernel.org >
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@elte.hu >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1351372712-21104-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-10-29 11:34:46 -02:00
Namhyung Kim
29a0fc9b2b
perf tools: Convert to LIBELF_SUPPORT
...
For building perf without libelf, we can set NO_LIBELF=1 as a argument
of make. It then defines NO_LIBELF_SUPPORT macro for C code to do the
proper handling. However it usually used in a negative semantics -
e.g. #ifndef - so we saw double negations which can be misleading.
Convert it to a positive form to make it more readable.
Signed-off-by: Namhyung Kim <namhyung@kernel.org >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1348824728-14025-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-09-28 21:07:36 -03:00
Feng Tang
8f28f19a87
perf tools: Fix a compiling error in util/map.c
...
This patch fix a compile warning taken as error:
CC util/map.o
cc1: warnings being treated as errors
util/map.c: In function ‘map__fprintf_dsoname’:
util/map.c:240: error: ‘dsoname’ may be used uninitialized in this function
make: *** [util/map.o] Error 1
Signed-off-by: Feng Tang <feng.tang@intel.com >
Cc: David Ahern <dsahern@gmail.com >
Cc: Ingo Molnar <mingo@elte.hu >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1346053107-11946-3-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-09-20 08:36:34 -03:00
Jiri Olsa
7dbf4dcfe2
perf tools: Back [vdso] DSO with real data
...
Storing data for VDSO shared object, because we need it for the post
unwind processing.
The VDSO shared object is same for all process on a running system, so
it makes no difference when we store it inside the tracer - perf.
When [vdso] map memory is hit, we retrieve [vdso] DSO image and store it
into temporary file.
During the build-id processing phase, the [vdso] DSO image is stored in
build-id db, and build-id reference is made inside perf.data. The
build-id vdso file object is called '[vdso]'. We don't use temporary
file name which gets removed when record is finished.
During report phase the vdso build-id object is treated as any other
build-id DSO object.
Adding following API for vdso object:
bool is_vdso_map(const char *filename)
- returns true if the filename matches vdso map name
struct dso *vdso__dso_findnew(struct list_head *head)
- find/create proper vdso DSO object
vdso__exit(void)
- removes temporary VDSO image if there's any
This change makes backtrace dwarf post unwind possible from [vdso] maps.
Following output is current report of [vdso] sample dwarf backtrace:
# Overhead Command Shared Object Symbol
# ........ ....... ................. .............................
#
99.52% ex [vdso] [.] 0x00007fff3ace89af
|
--- 0x7fff3ace89af
Following output is new report of [vdso] sample dwarf backtrace:
# Overhead Command Shared Object Symbol
# ........ ....... ................. .............................
#
99.52% ex [vdso] [.] 0x00000000000009af
|
--- 0x7fff3ace89af
main
__libc_start_main
_start
Signed-off-by: Jiri Olsa <jolsa@redhat.com >
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@elte.hu >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1347295819-23177-5-git-send-email-jolsa@redhat.com
[ committer note: s/ALIGN/PERF_ALIGN/g to cope with the android build changes ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-09-11 12:08:30 -03:00
Cody P Schafer
0f75a710df
perf symbols: Remove unused function map__objdump_2ip
...
map__objdump_2ip was introduced in:
ee11b90b1236532461a0cody@linux.vnet.ibm.com >
Cc: David Hansen <dave@linux.vnet.ibm.com >
Cc: Ingo Molnar <mingo@redhat.com >
Cc: Matt Hellsley <matthltc@us.ibm.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com >
Link: http://lkml.kernel.org/r/1344637382-22789-5-git-send-email-cody@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-08-13 12:55:09 -03:00
Namhyung Kim
393be2e374
perf symbols: Support minimal build without libelf
...
Now we have isolated all ELF-specific stuff, it's possible to build
without libelf. The output binary can do most of jobs but lacks (user
level) symbol information - kernel symbols are still accessable thanks
to the kallsyms.
To build perf without libelf (elfutils), give NO_LIBELF=1 to make.
For now, only 'perf probe' command is removed since it depends on
libelf/libdw heavily.
Signed-off-by: Namhyung Kim <namhyung@kernel.org >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1344228082-15569-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-08-09 16:26:38 -03:00
Namhyung Kim
e5a1845fc0
perf symbols: Split out util/symbol-elf.c
...
Factor out the dependency of ELF handling into separate symbol-elf.c
file. It is a preparation of building a minimalistic version perf tools
which doesn't depend on the elfutils.
Signed-off-by: Namhyung Kim <namhyung@kernel.org >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Paul Mackerras <paulus@samba.org >
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl >
Link: http://lkml.kernel.org/r/1344228082-15569-3-git-send-email-namhyung@kernel.org
[ committer note: removed blank line at symbol-elf.c EOF ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-08-09 16:26:33 -03:00
David Ahern
c80c3c2690
perf kvm: Limit repetitive guestmount message to once per directory
...
After 7ed97addsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Link: http://lkml.kernel.org/r/1342826756-64663-7-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-07-25 11:31:03 -03:00
David Ahern
adb5d2a487
perf kvm: Fix bug resolving guest kernel syms
...
Guest kernel symbols are not resolved despite passing the information
needed to resolve them. e.g.,
perf kvm --guest --guestmount=/tmp/guest-mount record -a -- sleep 1
perf kvm --guest --guestmount=/tmp/guest-mount report --stdio
36.55% [guest/11399] [unknown] [g] 0xffffffff81600bc8
33.19% [guest/10474] [unknown] [g] 0x00000000c0116e00
30.26% [guest/11094] [unknown] [g] 0xffffffff8100a288
43.69% [guest/10474] [unknown] [g] 0x00000000c0103d90
37.38% [guest/11399] [unknown] [g] 0xffffffff81600bc8
12.24% [guest/11094] [unknown] [g] 0xffffffff810aa91d
6.69% [guest/11094] [unknown] [u] 0x00007fa784d721c3
which is just pathetic.
After a maddening 2 days sifting through perf minutia I found it --
id_hdr_size is not initialized for guest machines. This shows up on the
report side as random garbage for the cpu and timestamp, e.g.,
29816 7310572949125804849 0x1ac0 [0x50]: PERF_RECORD_MMAP ...
That messes up the sample sorting such that synthesized guest maps are
processed last.
With this patch you get a much more helpful report:
12.11% [guest/11399] [guest.kernel.kallsyms.11399] [g] irqtime_account_process_tick
10.58% [guest/11399] [guest.kernel.kallsyms.11399] [g] run_timer_softirq
6.95% [guest/11094] [guest.kernel.kallsyms.11094] [g] printk_needs_cpu
6.50% [guest/11094] [guest.kernel.kallsyms.11094] [g] do_timer
6.45% [guest/11399] [guest.kernel.kallsyms.11399] [g] idle_balance
4.90% [guest/11094] [guest.kernel.kallsyms.11094] [g] native_read_tsc
...
v2:
- changed rbtree walk to use rb_first per Namhyung's suggestion
Tested-by: Jiri Olsa <jolsa@redhat.com >
Signed-off-by: David Ahern <dsahern@gmail.com >
Cc: Frederic Weisbecker <fweisbec@gmail.com >
Cc: Ingo Molnar <mingo@kernel.org >
Cc: Jiri Olsa <jolsa@redhat.com >
Cc: Namhyung Kim <namhyung@kernel.org >
Cc: Peter Zijlstra <peterz@infradead.org >
Link: http://lkml.kernel.org/r/1342826756-64663-5-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com >
2012-07-25 11:30:13 -03:00
