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From: He Kuang <hekuang@huawei.com>
To: <peterz@infradead.org>, <mingo@redhat.com>, <acme@kernel.org>,
	<alexander.shishkin@linux.intel.com>, <jolsa@redhat.com>,
	<wangnan0@huawei.com>, <hekuang@huawei.com>,
	<jpoimboe@redhat.com>, <ak@linux.intel.com>, <eranian@google.com>,
	<namhyung@kernel.org>, <adrian.hunter@intel.com>,
	<sukadev@linux.vnet.ibm.com>, <masami.hiramatsu.pt@hitachi.com>,
	<tumanova@linux.vnet.ibm.com>, <kan.liang@intel.com>,
	<penberg@kernel.org>, <dsahern@gmail.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: [PATCH v9 14/14] perf callchain: Support aarch64 cross-platform
Date: Fri, 3 Jun 2016 03:33:23 +0000	[thread overview]
Message-ID: <1464924803-22214-15-git-send-email-hekuang@huawei.com> (raw)
In-Reply-To: <1464924803-22214-1-git-send-email-hekuang@huawei.com>

Support aarch64 cross platform callchain unwind.

Signed-off-by: He Kuang <hekuang@huawei.com>
---
 tools/perf/arch/arm64/util/unwind-libunwind.c |  4 ++-
 tools/perf/config/Makefile                    | 12 +++++++++
 tools/perf/util/Build                         |  1 +
 tools/perf/util/libunwind/arm64.c             | 35 +++++++++++++++++++++++++++
 tools/perf/util/unwind-libunwind.c            |  4 +++
 5 files changed, 55 insertions(+), 1 deletion(-)
 create mode 100644 tools/perf/util/libunwind/arm64.c

diff --git a/tools/perf/arch/arm64/util/unwind-libunwind.c b/tools/perf/arch/arm64/util/unwind-libunwind.c
index a87afa9..c116b71 100644
--- a/tools/perf/arch/arm64/util/unwind-libunwind.c
+++ b/tools/perf/arch/arm64/util/unwind-libunwind.c
@@ -1,11 +1,13 @@
 
+#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:
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index 34999fb..47e8f58 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -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 := $(warning No libunwind found. Please install libunwind-dev[el] >= 1.1 and/or set LIBUNWIND_DIR);
     NO_LOCAL_LIBUNWIND := 1
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 7746e09..fced833 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -102,6 +102,7 @@ libperf-$(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
 
diff --git a/tools/perf/util/libunwind/arm64.c b/tools/perf/util/libunwind/arm64.c
new file mode 100644
index 0000000..4fb5395
--- /dev/null
+++ b/tools/perf/util/libunwind/arm64.c
@@ -0,0 +1,35 @@
+/*
+ * 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;
diff --git a/tools/perf/util/unwind-libunwind.c b/tools/perf/util/unwind-libunwind.c
index c4d6388..2c3ec8c 100644
--- a/tools/perf/util/unwind-libunwind.c
+++ b/tools/perf/util/unwind-libunwind.c
@@ -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)
@@ -37,6 +38,9 @@ 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) {
-- 
1.8.5.2

  parent reply	other threads:[~2016-06-03  3:35 UTC|newest]

Thread overview: 40+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-06-03  3:33 [PATCH v9 00/14] Add support for remote unwind He Kuang
2016-06-03  3:33 ` [PATCH v9 01/14] perf tools: Use LIBUNWIND_DIR for remote libunwind feature check He Kuang
2016-06-08  8:45   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 02/14] perf tools: Decouple thread->address_space on libunwind He Kuang
2016-06-08  8:46   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 03/14] perf tools: Introducing struct unwind_libunwind_ops for local unwind He Kuang
2016-06-08  8:46   ` [tip:perf/core] perf unwind: Introduce 'struct unwind_libunwind_ops' " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 04/14] perf tools: Move unwind__prepare_access from thread_new into thread__insert_map He Kuang
2016-06-08  8:47   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 05/14] perf tools: Don't mix LIBUNWIND_LIBS into LIBUNWIND_LDFLAGS He Kuang
2016-06-08  8:47   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 06/14] perf tools: Separate local/remote libunwind config He Kuang
2016-06-08  8:47   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 07/14] perf tools: Rename unwind-libunwind.c to unwind-libunwind-local.c He Kuang
2016-06-08  8:48   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 08/14] perf tools: Extract common API out of unwind-libunwind-local.c He Kuang
2016-06-08  8:48   ` [tip:perf/core] " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 09/14] perf tools: Export normalize_arch() function He Kuang
2016-06-08  8:49   ` [tip:perf/core] " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 10/14] perf tools: Check the target platform before assigning unwind methods He Kuang
2016-06-04  5:36   ` [PATCH v9 10/14 UPDATE] " He Kuang
2016-06-07 18:06     ` Arnaldo Carvalho de Melo
2016-06-08  8:49   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 11/14] perf tools: Change fixed name of libunwind__arch_reg_id to macro He Kuang
2016-06-08  8:50   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 12/14] perf tools: Introduce flag to separate local/remote unwind compilation He Kuang
2016-06-08  8:50   ` [tip:perf/core] perf unwind: " tip-bot for He Kuang
2016-06-03  3:33 ` [PATCH v9 13/14] perf callchain: Support x86 target platform He Kuang
2016-06-08  8:51   ` [tip:perf/core] " tip-bot for He Kuang
2016-06-03  3:33 ` He Kuang [this message]
2016-06-08  8:51   ` [tip:perf/core] perf callchain: Support aarch64 cross-platform tip-bot for He Kuang
2016-06-03  7:06 ` [PATCH v9 00/14] Add support for remote unwind Jiri Olsa
2016-06-03 19:42   ` Arnaldo Carvalho de Melo
2016-06-03 21:06     ` Arnaldo Carvalho de Melo
2016-06-03 21:09       ` Arnaldo Carvalho de Melo
2016-06-04  5:39         ` Hekuang
2016-06-07 15:12           ` Arnaldo Carvalho de Melo
2016-06-07 15:14             ` Arnaldo Carvalho de Melo
2016-06-07 19:44   ` Arnaldo Carvalho de Melo
2016-06-08  7:33     ` Hekuang

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