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Commit d18019a5 authored by Ravi Bangoria's avatar Ravi Bangoria Committed by Arnaldo Carvalho de Melo
Browse files

perf tests: Add dwarf unwind test for powerpc 

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: default avatarRavi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Matt Fleming <matt.fleming@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent d5a00296

tools/perf/arch/powerpc/Build

+1 −0
Original line number Original line Diff line number Diff line 
libperf-y += util/

libperf-y += util/

libperf-y += tests/

tools/perf/arch/powerpc/include/arch-tests.h

0 → 100644
+13 −0
Original line number Original line Diff line number Diff line 
#ifndef ARCH_TESTS_H

#define ARCH_TESTS_H



#ifdef HAVE_DWARF_UNWIND_SUPPORT

struct thread;

struct perf_sample;

int test__arch_unwind_sample(struct perf_sample *sample,

			     struct thread *thread);

#endif



extern struct test arch_tests[];



#endif

tools/perf/arch/powerpc/include/perf_regs.h

+2 −0
Original line number Original line Diff line number Diff line
@@ -5,6 +5,8 @@ 
#include <linux/types.h>

#include <linux/types.h>

#include <asm/perf_regs.h>

#include <asm/perf_regs.h>





void perf_regs_load(u64 *regs);



#define PERF_REGS_MASK  ((1ULL << PERF_REG_POWERPC_MAX) - 1)

#define PERF_REGS_MASK  ((1ULL << PERF_REG_POWERPC_MAX) - 1)

#define PERF_REGS_MAX   PERF_REG_POWERPC_MAX

#define PERF_REGS_MAX   PERF_REG_POWERPC_MAX

#ifdef __powerpc64__

#ifdef __powerpc64__

tools/perf/arch/powerpc/tests/Build

0 → 100644
+4 −0
Original line number Original line Diff line number Diff line 
libperf-$(CONFIG_DWARF_UNWIND) += regs_load.o

libperf-$(CONFIG_DWARF_UNWIND) += dwarf-unwind.o



libperf-y += arch-tests.o

tools/perf/arch/powerpc/tests/arch-tests.c

0 → 100644
+15 −0
Original line number Original line Diff line number Diff line 
#include <string.h>

#include "tests/tests.h"

#include "arch-tests.h"



struct test arch_tests[] = {

#ifdef HAVE_DWARF_UNWIND_SUPPORT

	{

		.desc = "Test dwarf unwind",

		.func = test__dwarf_unwind,

	},

#endif

	{

		.func = NULL,

	},

};