linux-toradex.git/tools/perf/arch, branch v4.9.116

perf/tools: header file sync up

2018-06-05T08:28:58+00:00

When building tools/perf/ it rightly complains about a number of .h
files being out of sync.  Fix this up by syncing them properly with the
relevant in-kernel versions.

Signed-off-by: Greg Kroah-Hartman

perf record: Fix failed memory allocation for get_cpuid_str

2018-05-30T05:50:20+00:00

[ Upstream commit 81fccd6ca507d3b2012eaf1edeb9b1dbf4bd22db ]

In x86 architecture dependend part function get_cpuid_str() mallocs a
128 byte buffer, but does not check if the memory allocation succeeded
or not.

When the memory allocation fails, function __get_cpuid() is called with
first parameter being a NULL pointer.  However this function references
its first parameter and operates on a NULL pointer which might cause
core dumps.

Signed-off-by: Thomas Richter 
Cc: Heiko Carstens 
Cc: Hendrik Brueckner 
Cc: Martin Schwidefsky 
Link: http://lkml.kernel.org/r/20180117131611.34319-1-tmricht@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

perf tools: Fix build with ARCH=x86_64

2018-01-23T18:57:07+00:00

commit 7a759cd8e8272ee18922838ee711219c7c796a31 upstream.

With commit: 0a943cb10ce78 (tools build: Add HOSTARCH Makefile variable)
when building for ARCH=x86_64, ARCH=x86_64 is passed to perf instead of
ARCH=x86, so the perf build process searchs header files from
tools/arch/x86_64/include, which doesn't exist.

The following build failure is seen:

  In file included from util/event.c:2:0:
    tools/include/uapi/linux/mman.h:4:27: fatal error: uapi/asm/mman.h: No such file or directory
    compilation terminated.

Fix this issue by using SRCARCH instead of ARCH in perf, just like the
main kernel Makefile and tools/objtool's.

Signed-off-by: Jiada Wang 
Tested-by: Arnaldo Carvalho de Melo 
Acked-by: Jiri Olsa 
Cc: Alexander Shishkin 
Cc: Andi Kleen 
Cc: Eugeniu Rosca 
Cc: Jan Stancek 
Cc: Masami Hiramatsu 
Cc: Peter Zijlstra 
Cc: Ravi Bangoria 
Cc: Rui Teng 
Cc: Sukadev Bhattiprolu 
Cc: Wang Nan 
Fixes: 0a943cb10ce7 ("tools build: Add HOSTARCH Makefile variable")
Link: http://lkml.kernel.org/r/1491793357-14977-2-git-send-email-jiada_wang@mentor.com
Signed-off-by: Arnaldo Carvalho de Melo 
Cc: Tuomas Tynkkynen 
Signed-off-by: Greg Kroah-Hartman

perf uretprobe ppc64le: Fix probe location

2016-10-05T11:14:22+00:00

Perf uretprobe probes on GEP(Global Entry Point) which fails to record
all function calls via LEP(Local Entry Point). Fix that by probing on LEP.

Objdump:

  00000000100005f0 :
      100005f0:   02 10 40 3c     lis     r2,4098
      100005f4:   00 7f 42 38     addi    r2,r2,32512
      100005f8:   a6 02 08 7c     mflr    r0
      100005fc:   10 00 01 f8     std     r0,16(r1)
      10000600:   f8 ff e1 fb     std     r31,-8(r1)

Before applying patch:

  $ cat /sys/kernel/debug/tracing/uprobe_events
    r:probe_uprobe_test/doit /home/ravi/uprobe_test:0x00000000000005f0

After applying patch:

  $ cat /sys/kernel/debug/tracing/uprobe_events
    r:probe_uprobe_test/doit /home/ravi/uprobe_test:0x00000000000005f8

This is not the case with kretprobes because the kernel itself finds LEP
and probes on it.

Signed-off-by: Ravi Bangoria 
Cc: Alexander Shishkin 
Cc: Balbir Singh 
Cc: Masami Hiramatsu 
Cc: Naveen N. Rao 
Cc: Peter Zijlstra 
Link: http://lkml.kernel.org/r/1475576865-6562-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Support CPU id matching for x86 v2

2016-10-03T22:58:01+00:00

Implement the code to match CPU types to mapfile types for x86 based on
CPUID. This extends an existing similar function, but changes it to use
the x86 mapfile cpu description.  This allows to resolve event lists
generated by jevents.

Signed-off-by: Andi Kleen 
Signed-off-by: Sukadev Bhattiprolu 
Acked-by: Ingo Molnar 
Acked-by: Jiri Olsa 
Cc: Madhavan Srinivasan 
Cc: Peter Zijlstra 
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1473978296-20712-6-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf powerpc: Support CPU ID matching for Powerpc

2016-10-03T22:58:01+00:00

Implement code that returns the generic CPU ID string for Powerpc.  This
will be used to identify the specific table of PMU events to
parse/compare user specified events against.

Signed-off-by: Sukadev Bhattiprolu 
Acked-by: Ingo Molnar 
Acked-by: Jiri Olsa 
Cc: Madhavan Srinivasan 
Cc: Peter Zijlstra 
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1473978296-20712-5-git-send-email-sukadev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add dwarf unwind test for powerpc

2016-09-29T14:18:21+00:00

The user stack dump feature was recently added for powerpc. But there
was no test case available to test it.

This test works same as on other architectures by preparing a stack
frame on the perf test thread and comparing each frame by unwinding it.

  $ ./perf test 50
    50: Test dwarf unwind    : Ok

User stack dump for powerpc: https://lkml.org/lkml/2016/4/28/482

Signed-off-by: Ravi Bangoria 
Acked-by: Jiri Olsa 
Cc: Alexander Shishkin 
Cc: Anju T Sudhakar 
Cc: Josh Poimboeuf 
Cc: Masami Hiramatsu 
Cc: Matt Fleming 
Cc: Michael Ellerman 
Cc: Namhyung Kim 
Cc: Peter Zijlstra 
Cc: Wang Nan 
Cc: linuxppc-dev@lists.ozlabs.org
Link: http://lkml.kernel.org/r/1474267100-31079-1-git-send-email-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Record address filter in AUXTRACE_INFO event

2016-09-29T14:17:05+00:00

The address filter is needed to help decode the trace, so store it in
the AUXTRACE_INFO event.

Signed-off-by: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Masami Hiramatsu 
Cc: Mathieu Poirier 
Link: http://lkml.kernel.org/r/1474641528-18776-14-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf intel-pt: Add support for recording the max non-turbo ratio

2016-09-29T14:17:03+00:00

Previously the maximum non-turbo ratio was calculated from TSC assuming
a 100 MHz multiplier which is correct for current hardware supporting
Intel PT.  However more recent kernels also now export the value, so use
that in preference to the calculated value.

Signed-off-by: Adrian Hunter 
Cc: Jiri Olsa 
Cc: Masami Hiramatsu 
Cc: Mathieu Poirier 
Link: http://lkml.kernel.org/r/1474641528-18776-11-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo

perf tools: Add sink configuration for cs_etm PMU

2016-09-22T16:08:55+00:00

Using the PMU::set_drv_config() callback to enable the CoreSight sink
that will be used for the trace session.

Signed-off-by: Mathieu Poirier 
Acked-by: Jiri Olsa 
Cc: Alexander Shishkin 
Cc: Peter Zijlstra 
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1474041004-13956-8-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo