linux-stable.git/tools/perf/arch, branch linux-3.19.y

perf tools powerpc: Use dwfl_report_elf() instead of offline.

2015-01-16T20:49:30+00:00

dwfl_report_offline() works only when libraries are prelinked.

Replace dwfl_report_offline() with dwfl_report_elf() so we correctly
extract debug info even from libraries that are not prelinked.

Reported-by: Jiri Olsa 
Signed-off-by: Sukadev Bhattiprolu 
Tested-by: Jiri Olsa 
Cc: Jiri Olsa 
Cc: Michael Ellerman 
Link: http://lkml.kernel.org/r/20150114221045.GA17703@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: A thread's machine can be found via thread->mg->machine

2014-10-29T12:32:46+00:00

So stop passing both machine and thread to several thread methods,
reducing function signature length.

Cc: Adrian Hunter 
Cc: Borislav Petkov 
Cc: David Ahern 
Cc: Don Zickus 
Cc: Frederic Weisbecker 
Cc: Jean Pihet 
Cc: Jiri Olsa 
Cc: Mike Galbraith 
Cc: Namhyung Kim 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Stephane Eranian 
Link: http://lkml.kernel.org/n/tip-ckcy19dcp1jfkmdihdjcqdn1@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo

perf tools powerpc: Cache the DWARF debug info

2014-10-29T12:32:46+00:00

Cache the DWARF debug info for DSO so we don't have to rebuild it for each
address in the DSO.

Note that dso__new() uses calloc() so don't need to set dso->dwfl to NULL.

	$ /tmp/perf.orig --version
	perf version 3.18.rc1.gc2661b8
	$ /tmp/perf.new --version
	perf version 3.18.rc1.g402d62
	$ perf stat -e cycles,instructions /tmp/perf.orig report -g > orig

	 Performance counter stats for '/tmp/perf.orig report -g':

	     6,428,177,183 cycles                    #    0.000 GHz
	     4,176,288,391 instructions              #    0.65  insns per cycle

	       1.840666132 seconds time elapsed

	$ perf stat -e cycles,instructions /tmp/perf.new report -g > new

	 Performance counter stats for '/tmp/perf.new report -g':

	       305,773,142 cycles                    #    0.000 GHz
	       276,048,272 instructions              #    0.90  insns per cycle

	       0.087693543 seconds time elapsed
	$ diff orig new
	$

Changelog[v2]:

[Arnaldo Carvalho] Cache in existing global objects rather than create
                   new static/globals in functions.

Reported-by: Anton Blanchard 
Signed-off-by: Sukadev Bhattiprolu 
Cc: Anton Blanchard 
Cc: Jiri Olsa 
Link: http://lkml.kernel.org/r/20141022000958.GB2228@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix build breakage on arm64 targets

2014-10-01T17:44:17+00:00

Attempting to build the perf tool for an arm64 target results in the
following failure:

  arch/arm64/util/unwind-libunwind.c: In function 'libunwind__arch_reg_id':
  arch/arm64/util/unwind-libunwind.c:77:3: error: implicit declaration of function 'pr_err'
     pr_err("unwind: invalid reg id %d\n", regnum);
     ^
  arch/arm64/util/unwind-libunwind.c:77:3: error: nested extern declaration of 'pr_err'

This is due to commit 84f5d36f4866 ("perf tools: Move pr_* debug macros
into debug object") moving the pr_* macros into a new header file, but
failing to update architectures other than x86.

This patch adds the missing include, and fixes the build again.

Signed-off-by: Will Deacon 
Cc: Jean Pihet 
Cc: Jiri Olsa 
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1412076432-22045-1-git-send-email-will.deacon@arm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tool: fix compilation for ARM

2014-09-17T20:08:09+00:00

This patch fixes ARM compile of the perf tool.  The debug.h header file
was missing from a couple of unwind related modules.

Signed-off-by: Stephane Eranian 
Cc: David Ahern 
Cc: Ingo Molnar 
Cc: Jiri Olsa 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/20140905042103.GA3091@quad
Signed-off-by: Arnaldo Carvalho de Melo

perf tools powerpc: Fix build issue when DWARF support is disabled

2014-09-17T20:08:07+00:00

The powerpc skip callchain code uses DWARF, so we must disable it if
DWARF is disabled.

Signed-off-by: Anton Blanchard 
Cc: Ingo Molnar 
Cc: Michael Ellerman 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Cc: Sukadev Bhattiprolu 
Link: http://lkml.kernel.org/r/20140825182506.2be6512d@kryten
Signed-off-by: Arnaldo Carvalho de Melo

perf tools powerpc: Explicitly include util/debug.h

2014-08-20T11:29:10+00:00

Looks like util/debug.h was indirectly included before and is no longer
included now. pr_debug is left undefined and the build of perf tool
fails on Powerpc.

Explicitly include util/debug.h.

Signed-off-by: Sukadev Bhattiprolu 
Acked-by: Jiri Olsa 
Cc: Jiri Olsa 
Cc: Michael Ellerman 
Link: http://lkml.kernel.org/r/20140807072700.GA17623@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add arm64 triplets

2014-08-15T13:40:11+00:00

Adds the triplet used for arm64 by Android. Others will want to add
their own later.

Signed-off-by: Elliott Hughes 
Cc: Ingo Molnar 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/20140814193920.A7D2D20572@enh.mtv.corp.google.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Fix arm64 build error

2014-07-30T15:37:55+00:00

I'm seeing the following build error on arm64:

  In file included from util/event.c:3:0:
  util/event.h:95:17: error: 'PERF_REGS_MAX' undeclared here (not in a function)
    u64 cache_regs[PERF_REGS_MAX];
                 ^

This patch adds a PERF_REGS_MAX definition for arm64.

Signed-off-by: Mark Salter 
Acked-by: Jean Pihet 
Cc: Ingo Molnar 
Cc: Jean Pihet 
Cc: Paul Mackerras 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1406325766-8085-1-git-send-email-msalter@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo

perf powerpc: Include util/util.h and remove stringify macros

2014-07-24T14:00:39+00:00

The stringify macros are defined in tools/perf/util/util.h and don't
need to be redfined specfiically for powerpc.

Signed-off-by: Sukadev Bhattiprolu 
Cc: Andi Kleen 
Cc: Jiri Olsa 
Cc: Michael Ellerman 
Link: http://lkml.kernel.org/r/20140724074718.GB18829@us.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo