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Commit 057fbfb2 authored by He Kuang's avatar He Kuang Committed by Arnaldo Carvalho de Melo
Browse files

perf callchain: Support aarch64 cross-platform 



Support aarch64 cross platform callchain unwind.

Signed-off-by: default avatarHe Kuang <hekuang@huawei.com>
Acked-by: default avatarJiri Olsa <jolsa@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ekaterina Tumanova <tumanova@linux.vnet.ibm.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1464924803-22214-15-git-send-email-hekuang@huawei.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 52ffe0ff

tools/perf/arch/arm64/util/unwind-libunwind.c

+3 −1
Original line number Diff line number Diff line 


#ifndef REMOTE_UNWIND_LIBUNWIND

#include <errno.h>

#include <libunwind.h>

#include "perf_regs.h"

#include "../../util/unwind.h"

#include "../../util/debug.h"

#endif



int libunwind__arch_reg_id(int regnum)

int LIBUNWIND__ARCH_REG_ID(int regnum)

{

	switch (regnum) {

	case UNW_AARCH64_X0:

tools/perf/config/Makefile

+12 −0
Original line number Diff line number Diff line
@@ -362,6 +362,18 @@ ifndef NO_LIBUNWIND 
    have_libunwind = 1

  endif



  ifeq ($(feature-libunwind-aarch64), 1)

    $(call detected,CONFIG_LIBUNWIND_AARCH64)

    CFLAGS += -DHAVE_LIBUNWIND_AARCH64_SUPPORT

    LDFLAGS += -lunwind-aarch64

    have_libunwind = 1

    $(call feature_check,libunwind-debug-frame-aarch64)

    ifneq ($(feature-libunwind-debug-frame-aarch64), 1)

      msg := $(warning No debug_frame support found in libunwind-aarch64);

      CFLAGS += -DNO_LIBUNWIND_DEBUG_FRAME_AARCH64

    endif

  endif



  ifneq ($(feature-libunwind), 1)

    msg := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);

    NO_LOCAL_LIBUNWIND := 1

tools/perf/util/Build

+1 −0
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ libperf-$(CONFIG_LIBDW_DWARF_UNWIND) += unwind-libdw.o 
libperf-$(CONFIG_LOCAL_LIBUNWIND)    += unwind-libunwind-local.o

libperf-$(CONFIG_LIBUNWIND)          += unwind-libunwind.o

libperf-$(CONFIG_LIBUNWIND_X86)      += libunwind/x86_32.o

libperf-$(CONFIG_LIBUNWIND_AARCH64)  += libunwind/arm64.o



libperf-$(CONFIG_LIBBABELTRACE) += data-convert-bt.o

tools/perf/util/libunwind/arm64.c

0 → 100644
+35 −0
Original line number Diff line number Diff line 
/*

 * This file setups defines to compile arch specific binary from the

 * generic one.

 *

 * The function 'LIBUNWIND__ARCH_REG_ID' name is set according to arch

 * name and the defination of this function is included directly from

 * 'arch/arm64/util/unwind-libunwind.c', to make sure that this function

 * is defined no matter what arch the host is.

 *

 * Finally, the arch specific unwind methods are exported which will

 * be assigned to each arm64 thread.

 */



#define REMOTE_UNWIND_LIBUNWIND



#define LIBUNWIND__ARCH_REG_ID(regnum) libunwind__arm64_reg_id(regnum)



#include "unwind.h"

#include "debug.h"

#include "libunwind-aarch64.h"

#include <../../../../arch/arm64/include/uapi/asm/perf_regs.h>

#include "../../arch/arm64/util/unwind-libunwind.c"



/* NO_LIBUNWIND_DEBUG_FRAME is a feature flag for local libunwind,

 * assign NO_LIBUNWIND_DEBUG_FRAME_AARCH64 to it for compiling arm64

 * unwind methods.

 */

#undef NO_LIBUNWIND_DEBUG_FRAME

#ifdef NO_LIBUNWIND_DEBUG_FRAME_AARCH64

#define NO_LIBUNWIND_DEBUG_FRAME

#endif

#include "util/unwind-libunwind-local.c"



struct unwind_libunwind_ops *

arm64_unwind_libunwind_ops = &_unwind_libunwind_ops;

tools/perf/util/unwind-libunwind.c

+4 −0
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 


struct unwind_libunwind_ops __weak *local_unwind_libunwind_ops;

struct unwind_libunwind_ops __weak *x86_32_unwind_libunwind_ops;

struct unwind_libunwind_ops __weak *arm64_unwind_libunwind_ops;



static void unwind__register_ops(struct thread *thread,

			  struct unwind_libunwind_ops *ops)
@@ -38,6 +39,9 @@ int unwind__prepare_access(struct thread *thread, struct map *map) 
	if (!strcmp(arch, "x86")) {

		if (dso_type != DSO__TYPE_64BIT)

			ops = x86_32_unwind_libunwind_ops;

	} else if (!strcmp(arch, "arm64") || !strcmp(arch, "arm")) {

		if (dso_type == DSO__TYPE_64BIT)

			ops = arm64_unwind_libunwind_ops;

	}



	if (!ops) {