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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull perf fixes from Ingo Molnar:
 "Mostly tooling fixes, plus an Intel RAPL PMU driver fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tests x86: Fix stack map lookup in dwarf unwind test
  perf x86: Fix perf to use non-executable stack, again
  perf tools: Remove extra '/' character in events file path
  perf machine: Search for modules in %s/lib/modules/%s
  perf tests: Add static build make test
  perf tools: Fix bfd dependency libraries detection
  perf tools: Use LDFLAGS instead of ALL_LDFLAGS
  perf/x86: Fix RAPL rdmsrl_safe() usage
  tools lib traceevent: Fix memory leak in pretty_print()
  tools lib traceevent: Fix backward compatibility macros for pevent filter enums
  perf tools: Disable libdw unwind for all but x86 arch
  perf tests x86: Fix memory leak in sample_ustack()
This commit is contained in:
Linus Torvalds 2014-05-01 09:50:58 -07:00
commit 2519d3b0f3
10 changed files with 66 additions and 23 deletions
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3
arch/x86/kernel/cpu/perf_event_intel_rapl.c
View File

@ -543,7 +543,8 @@ static int rapl_cpu_prepare(int cpu)
if (phys_id < 0)
return -1;
if (!rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits))
/* protect rdmsrl() to handle virtualization */
if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &msr_rapl_power_unit_bits))
return -1;
pmu = kzalloc_node(sizeof(*pmu), GFP_KERNEL, cpu_to_node(cpu));

4
tools/lib/api/fs/debugfs.c
View File

@ -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,
};

1
tools/lib/traceevent/event-parse.c
View File

@ -4344,6 +4344,7 @@ static void pretty_print(struct trace_seq *s, void *data, int size, struct event
format, len_arg, arg);
trace_seq_terminate(&p);
trace_seq_puts(s, p.buffer);
trace_seq_destroy(&p);
arg = arg->next;
break;
default:

4
tools/lib/traceevent/event-parse.h
View File

@ -876,8 +876,8 @@ struct event_filter {
struct event_filter *pevent_filter_alloc(struct pevent *pevent);
/* for backward compatibility */
#define FILTER_NONE PEVENT_ERRNO__FILTER_NOT_FOUND
#define FILTER_NOEXIST PEVENT_ERRNO__NO_FILTER
#define FILTER_NONE PEVENT_ERRNO__NO_FILTER
#define FILTER_NOEXIST PEVENT_ERRNO__FILTER_NOT_FOUND
#define FILTER_MISS PEVENT_ERRNO__FILTER_MISS
#define FILTER_MATCH PEVENT_ERRNO__FILTER_MATCH

2
tools/perf/Makefile.perf
View File

@ -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) \

3
tools/perf/arch/x86/tests/dwarf-unwind.c
View File

@ -23,9 +23,10 @@ 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);
return -1;
}

8
tools/perf/arch/x86/tests/regs_load.S
View File

@ -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

46
tools/perf/config/Makefile
View File

@ -34,6 +34,14 @@ ifeq ($(ARCH),arm)
LIBUNWIND_LIBS = -lunwind -lunwind-arm
endif
# So far there's only x86 libdw unwind support merged in perf.
# Disable it on all other architectures in case libdw unwind
# support is detected in system. Add supported architectures
# to the check.
ifneq ($(ARCH),x86)
NO_LIBDW_DWARF_UNWIND := 1
endif
ifeq ($(LIBUNWIND_LIBS),)
NO_LIBUNWIND := 1
else
@ -109,6 +117,10 @@ CFLAGS += -Wall
CFLAGS += -Wextra
CFLAGS += -std=gnu99
# Enforce a non-executable stack, as we may regress (again) in the future by
# adding assembler files missing the .GNU-stack linker note.
LDFLAGS += -Wl,-z,noexecstack
EXTLIBS = -lelf -lpthread -lrt -lm -ldl
ifneq ($(OUTPUT),)
@ -186,7 +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
@ -504,7 +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 ($(feature-liberty-z), 1)
EXTLIBS += -liberty -lz
endif
endif
endif
ifdef NO_DEMANGLE
@ -515,15 +544,10 @@ else
CFLAGS += -DHAVE_CPLUS_DEMANGLE_SUPPORT
else
ifneq ($(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

2
tools/perf/tests/make
View File

@ -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

16
tools/perf/util/machine.c
View File

@ -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)