summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorIngo Molnar <mingo@kernel.org>2014-05-01 08:22:08 +0200
committerIngo Molnar <mingo@kernel.org>2014-05-01 08:22:08 +0200
commit399f0c220a0ee97a5a9ea1a699a58fe2aacf2983 (patch)
treefe8a8f29c648adaf5ed372ac6b5a3fe802b1af8a
parent9f7ff8931e3c5ddc8535476971ec9501e9555c05 (diff)
parent9a126728165eef9b1e9349fe57b9747ac6c6f7e3 (diff)
downloadlinux-399f0c220a0ee97a5a9ea1a699a58fe2aacf2983.tar.bz2
Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf into perf/urgent
Pull perf/urgent fixes from Jiri Olsa: * Fix perf to use non-executable stack, again (Mathias Krause) * Remove extra '/' character in events file path (Xia Kaixu) * Search for modules in %s/lib/modules/%s (Richard Yao) * Build related fixies plus static build test (Jiri Olsa) * Fix stack map lookup in dwarf unwind test (Jiri Olsa) Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--tools/lib/api/fs/debugfs.c4
-rw-r--r--tools/perf/Makefile.perf2
-rw-r--r--tools/perf/arch/x86/tests/dwarf-unwind.c2
-rw-r--r--tools/perf/arch/x86/tests/regs_load.S8
-rw-r--r--tools/perf/config/Makefile38
-rw-r--r--tools/perf/tests/make2
-rw-r--r--tools/perf/util/machine.c16
7 files changed, 52 insertions, 20 deletions
diff --git a/tools/lib/api/fs/debugfs.c b/tools/lib/api/fs/debugfs.c
index 7c4347962353..a74fba6d7743 100644
--- a/tools/lib/api/fs/debugfs.c
+++ b/tools/lib/api/fs/debugfs.c
@@ -12,8 +12,8 @@
char debugfs_mountpoint[PATH_MAX + 1] = "/sys/kernel/debug";
static const char * const debugfs_known_mountpoints[] = {
- "/sys/kernel/debug/",
- "/debug/",
+ "/sys/kernel/debug",
+ "/debug",
0,
};
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index e96923310d57..895edd32930c 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -589,7 +589,7 @@ $(GTK_OBJS): $(OUTPUT)%.o: %.c $(LIB_H)
$(QUIET_CC)$(CC) -o $@ -c -fPIC $(CFLAGS) $(GTK_CFLAGS) $<
$(OUTPUT)libperf-gtk.so: $(GTK_OBJS) $(PERFLIBS)
- $(QUIET_LINK)$(CC) -o $@ -shared $(ALL_LDFLAGS) $(filter %.o,$^) $(GTK_LIBS)
+ $(QUIET_LINK)$(CC) -o $@ -shared $(LDFLAGS) $(filter %.o,$^) $(GTK_LIBS)
$(OUTPUT)builtin-help.o: builtin-help.c $(OUTPUT)common-cmds.h $(OUTPUT)PERF-CFLAGS
$(QUIET_CC)$(CC) -o $@ -c $(CFLAGS) \
diff --git a/tools/perf/arch/x86/tests/dwarf-unwind.c b/tools/perf/arch/x86/tests/dwarf-unwind.c
index b8c0102c70c8..83bc2385e6d3 100644
--- a/tools/perf/arch/x86/tests/dwarf-unwind.c
+++ b/tools/perf/arch/x86/tests/dwarf-unwind.c
@@ -23,7 +23,7 @@ static int sample_ustack(struct perf_sample *sample,
sp = (unsigned long) regs[PERF_REG_X86_SP];
- map = map_groups__find(&thread->mg, MAP__FUNCTION, (u64) sp);
+ map = map_groups__find(&thread->mg, MAP__VARIABLE, (u64) sp);
if (!map) {
pr_debug("failed to get stack map\n");
free(buf);
diff --git a/tools/perf/arch/x86/tests/regs_load.S b/tools/perf/arch/x86/tests/regs_load.S
index 99167bf644ea..60875d5c556c 100644
--- a/tools/perf/arch/x86/tests/regs_load.S
+++ b/tools/perf/arch/x86/tests/regs_load.S
@@ -1,4 +1,3 @@
-
#include <linux/linkage.h>
#define AX 0
@@ -90,3 +89,10 @@ ENTRY(perf_regs_load)
ret
ENDPROC(perf_regs_load)
#endif
+
+/*
+ * We need to provide note.GNU-stack section, saying that we want
+ * NOT executable stack. Otherwise the final linking will assume that
+ * the ELF stack should not be restricted at all and set it RWX.
+ */
+.section .note.GNU-stack,"",@progbits
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile
index a71fb395e38f..802cf544202b 100644
--- a/tools/perf/config/Makefile
+++ b/tools/perf/config/Makefile
@@ -117,6 +117,10 @@ CFLAGS += -Wall
CFLAGS += -Wextra
CFLAGS += -std=gnu99
+# Enforce a non-executable stack, as we may regress (again) in the future by
+# adding assembler files missing the .GNU-stack linker note.
+LDFLAGS += -Wl,-z,noexecstack
+
EXTLIBS = -lelf -lpthread -lrt -lm -ldl
ifneq ($(OUTPUT),)
@@ -194,7 +198,10 @@ VF_FEATURE_TESTS = \
stackprotector-all \
timerfd \
libunwind-debug-frame \
- bionic
+ bionic \
+ liberty \
+ liberty-z \
+ cplus-demangle
# Set FEATURE_CHECK_(C|LD)FLAGS-all for all CORE_FEATURE_TESTS features.
# If in the future we need per-feature checks/flags for features not
@@ -512,7 +519,21 @@ else
endif
ifeq ($(feature-libbfd), 1)
- EXTLIBS += -lbfd -lz -liberty
+ EXTLIBS += -lbfd
+
+ # call all detections now so we get correct
+ # status in VF output
+ $(call feature_check,liberty)
+ $(call feature_check,liberty-z)
+ $(call feature_check,cplus-demangle)
+
+ ifeq ($(feature-liberty), 1)
+ EXTLIBS += -liberty
+ else
+ ifeq ($(feature-liberty-z), 1)
+ EXTLIBS += -liberty -lz
+ endif
+ endif
endif
ifdef NO_DEMANGLE
@@ -523,15 +544,10 @@ else
CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
else
ifneq ($(feature-libbfd), 1)
- $(call feature_check,liberty)
- ifeq ($(feature-liberty), 1)
- EXTLIBS += -lbfd -liberty
- else
- $(call feature_check,liberty-z)
- ifeq ($(feature-liberty-z), 1)
- EXTLIBS += -lbfd -liberty -lz
- else
- $(call feature_check,cplus-demangle)
+ ifneq ($(feature-liberty), 1)
+ ifneq ($(feature-liberty-z), 1)
+ # we dont have neither HAVE_CPLUS_DEMANGLE_SUPPORT
+ # or any of 'bfd iberty z' trinity
ifeq ($(feature-cplus-demangle), 1)
EXTLIBS += -liberty
CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
diff --git a/tools/perf/tests/make b/tools/perf/tests/make
index 5daeae1cb4c0..2f92d6e7ee00 100644
--- a/tools/perf/tests/make
+++ b/tools/perf/tests/make
@@ -46,6 +46,7 @@ make_install_man := install-man
make_install_html := install-html
make_install_info := install-info
make_install_pdf := install-pdf
+make_static := LDFLAGS=-static
# all the NO_* variable combined
make_minimal := NO_LIBPERL=1 NO_LIBPYTHON=1 NO_NEWT=1 NO_GTK2=1
@@ -87,6 +88,7 @@ run += make_install_bin
# run += make_install_info
# run += make_install_pdf
run += make_minimal
+run += make_static
ifneq ($(call has,ctags),)
run += make_tags
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index a53cd0b8c151..27c2a5efe450 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -717,7 +717,7 @@ static char *get_kernel_version(const char *root_dir)
}
static int map_groups__set_modules_path_dir(struct map_groups *mg,
- const char *dir_name)
+ const char *dir_name, int depth)
{
struct dirent *dent;
DIR *dir = opendir(dir_name);
@@ -742,7 +742,15 @@ static int map_groups__set_modules_path_dir(struct map_groups *mg,
!strcmp(dent->d_name, ".."))
continue;
- ret = map_groups__set_modules_path_dir(mg, path);
+ /* Do not follow top-level source and build symlinks */
+ if (depth == 0) {
+ if (!strcmp(dent->d_name, "source") ||
+ !strcmp(dent->d_name, "build"))
+ continue;
+ }
+
+ ret = map_groups__set_modules_path_dir(mg, path,
+ depth + 1);
if (ret < 0)
goto out;
} else {
@@ -786,11 +794,11 @@ static int machine__set_modules_path(struct machine *machine)
if (!version)
return -1;
- snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel",
+ snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s",
machine->root_dir, version);
free(version);
- return map_groups__set_modules_path_dir(&machine->kmaps, modules_path);
+ return map_groups__set_modules_path_dir(&machine->kmaps, modules_path, 0);
}
static int machine__create_module(void *arg, const char *name, u64 start)