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Date: Wed, 4 Jun 2014 00:06:15 +0200
From: Alexis Berlemont <alexis.berlemont@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Alexis Berlemont <alexis.berlemont@...il.com>, jolsa@...hat.com,
dsahern@...il.com, mingo@...nel.org, sam@...nborg.org,
mmarek@...e.cz
Subject: [PATCH 22/32] perf kbuild: remove legacy libelf-related build variables (2nd part)
Remove HAVE_LIBELF_SUPPORT (replaced by CONFIG_LIBELF)
Remove HAVE_LIBELF_MMAP_SUPPORT (replaced by CONFIG_LIBELF_MMAP)
Remove HAVE_LIBELF_GETPHDRNUM__SUPPORT (replaced by
CONFIG_LIBELF_GETPHDRNUM_)
---
tools/perf/Kconfig | 16 ++++++++++++++++
tools/perf/builtin-inject.c | 2 +-
tools/perf/config/Makefile | 13 ++++++++-----
tools/perf/perf.c | 2 +-
tools/perf/util/generate-cmdlist.sh | 4 ++--
tools/perf/util/map.c | 3 ++-
tools/perf/util/symbol-elf.c | 3 ++-
tools/perf/util/symbol.h | 8 ++++----
8 files changed, 36 insertions(+), 15 deletions(-)
diff --git a/tools/perf/Kconfig b/tools/perf/Kconfig
index 196d32c..434a596 100644
--- a/tools/perf/Kconfig
+++ b/tools/perf/Kconfig
@@ -246,8 +246,23 @@ choice
Builtin elf support.
endchoice
+config LIBELF_MMAP
+ depends on LIBELF
+ bool "Libelf mmap support"
+ default y
+ ---help---
+ libdelf mmap
+
+config LIBELF_GETPHDRNUM
+ depends on LIBELF
+ default y
+ bool "Libelf getphdrnum support"
+ ---help---
+ libdelf mmap
+
config LIBDWARF
depends on LIBELF
+ default n
bool "Dwarf (libdwarf)"
---help---
libdwarf
@@ -255,6 +270,7 @@ config LIBDWARF
config LIBUNWIND
depends on LIBELF
bool "User space libunwind callchains"
+ default n
---help---
The library libunwind provides a portable C API to determine
the call-chain of a program.
diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 3a73875..6e7883b 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -229,7 +229,7 @@ static int perf_event__inject_buildid(struct perf_tool *tool,
* account this as unresolved.
*/
} else {
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef CONFIG_LIBELF
pr_warning("no symbols found in %s, maybe "
"install a debug package?\n",
al.map->dso->long_name);
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index f280b80..c102e91 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -312,14 +312,17 @@ ifdef CONFIG_LIBELF
endif # CONFIG_LIBELF
ifeq ($(LIBELF), 1)
- CFLAGS += -DHAVE_LIBELF_SUPPORT
- ifeq ($(feature-libelf-mmap), 1)
- CFLAGS += -DHAVE_LIBELF_MMAP_SUPPORT
+ ifdef CONFIG_LIBELF_MMAP
+ ifneq ($(feature-libelf-mmap), 1)
+ $(shell $(KCONFIG_SCRIPT) -d CONFIG_LIBELF_MMAP)
+ endif
endif
- ifeq ($(feature-libelf-getphdrnum), 1)
- CFLAGS += -DHAVE_ELF_GETPHDRNUM_SUPPORT
+ ifdef CONFIG_LIBELF_MMAP
+ ifneq ($(feature-libelf-getphdrnum), 1)
+ $(shell $(KCONFIG_SCRIPT) -d CONFIG_LIBELF_MMAP)
+ endif
endif
# include ARCH specific config
diff --git a/tools/perf/perf.c b/tools/perf/perf.c
index 588221c..f9b919f 100644
--- a/tools/perf/perf.c
+++ b/tools/perf/perf.c
@@ -80,7 +80,7 @@ static struct cmd_struct commands[] = {
#ifdef CONFIG_BUILTIN_SCHED
{ "sched", cmd_sched, 0 },
#endif
-#if defined HAVE_LIBELF_SUPPORT && defined CONFIG_BUILTIN_PROBE
+#if defined CONFIG_LIBELF && defined CONFIG_BUILTIN_PROBE
{ "probe", cmd_probe, 0 },
#endif
#ifdef CONFIG_BUILTIN_KMEM
diff --git a/tools/perf/util/generate-cmdlist.sh b/tools/perf/util/generate-cmdlist.sh
index 5d84ffc..a8dbdc2 100755
--- a/tools/perf/util/generate-cmdlist.sh
+++ b/tools/perf/util/generate-cmdlist.sh
@@ -30,7 +30,7 @@ do
echo "#endif"
done
-echo "#ifdef HAVE_LIBELF_SUPPORT"
+echo "#ifdef CONFIG_LIBELF"
sed -n -e 's/^perf-\([^ ]*\)[ ].* full.*/\1/p' $1/command-list.txt |
sort |
while read cmd
@@ -45,5 +45,5 @@ do
}' "$1/Documentation/perf-$cmd.txt"
echo "#endif"
done
-echo "#endif /* HAVE_LIBELF_SUPPORT */"
+echo "#endif /* CONFIG_LIBELF */"
echo "};"
diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c
index 39cd2d0..82261f5 100644
--- a/tools/perf/util/map.c
+++ b/tools/perf/util/map.c
@@ -1,3 +1,4 @@
+#include "generated/autoconf.h"
#include "symbol.h"
#include <errno.h>
#include <inttypes.h>
@@ -174,7 +175,7 @@ int map__load(struct map *map, symbol_filter_t filter)
pr_warning(", continuing without symbols\n");
return -1;
} else if (nr == 0) {
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef CONFIG_LIBELF
const size_t len = strlen(name);
const size_t real_len = len - sizeof(DSO__DELETED);
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index 6864661..1256595 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -5,12 +5,13 @@
#include <unistd.h>
#include <inttypes.h>
+#include "generated/autoconf.h"
#include "symbol.h"
#include "vdso.h"
#include <symbol/kallsyms.h>
#include "debug.h"
-#ifndef HAVE_ELF_GETPHDRNUM_SUPPORT
+#ifndef CONFIG_LIBELF_GETPHDRNUM
static int elf_getphdrnum(Elf *elf, size_t *dst)
{
GElf_Ehdr gehdr;
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index d8e886e..933cfd1 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -15,7 +15,7 @@
#include <libgen.h>
#include "build-id.h"
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef CONFIG_LIBELF
#include <libelf.h>
#include <gelf.h>
#endif
@@ -55,13 +55,13 @@ static inline char *bfd_demangle(void __maybe_unused *v,
* libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
* for newer versions we can use mmap to reduce memory usage:
*/
-#ifdef HAVE_LIBELF_MMAP_SUPPORT
+#ifdef CONFIG_LIBELF_MMAP
# define PERF_ELF_C_READ_MMAP ELF_C_READ_MMAP
#else
# define PERF_ELF_C_READ_MMAP ELF_C_READ
#endif
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef CONFIG_LIBELF
extern Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
GElf_Shdr *shp, const char *name, size_t *idx);
#endif
@@ -205,7 +205,7 @@ struct symsrc {
int fd;
enum dso_binary_type type;
-#ifdef HAVE_LIBELF_SUPPORT
+#ifdef CONFIG_LIBELF
Elf *elf;
GElf_Ehdr ehdr;
--
1.9.3
--
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