Commit e720c19e authored by Ingo Molnar's avatar Ingo Molnar
Browse files

Merge tag 'perf-core-for-mingo-4.12-20170413' of... 

Merge tag 'perf-core-for-mingo-4.12-20170413' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

 into perf/core

Pull perf/core improvements and fixes Arnaldo Carvalho de Melo:

User visible changes:

 - Fix 'perf stat' bug in handling events in error state (Stephane Eranian)

Documentation changes:

 - Add usage of --no-syscalls in 'perf trace' man page (Ravi Bangoria)

Infrastructure changes:

 - Pass PYTHON config to feature detection (David Carrillo-Cisneros)

 - Disable JVMTI if no ELF support available (David Carrillo-Cisneros)

 - Fix feature detection redefinion of build flags (David Carrillo-Cisneros)

 - Hint missing file when tool tips fail to load (David Carrillo-Cisneros)

Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parents fd583ad1 16eb8136

tools/build/feature/Makefile

+6 −6
Original line number Diff line number Diff line
@@ -53,17 +53,17 @@ FILES= \ 


FILES := $(addprefix $(OUTPUT),$(FILES))



CC ?= $(CROSS_COMPILE)gcc -MD

CXX ?= $(CROSS_COMPILE)g++ -MD

PKG_CONFIG := $(CROSS_COMPILE)pkg-config

CC ?= $(CROSS_COMPILE)gcc

CXX ?= $(CROSS_COMPILE)g++

PKG_CONFIG ?= $(CROSS_COMPILE)pkg-config

LLVM_CONFIG ?= llvm-config



all: $(FILES)



__BUILD = $(CC) $(CFLAGS) -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)

__BUILD = $(CC) $(CFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.c,$(@F)) $(LDFLAGS)

  BUILD = $(__BUILD) > $(@:.bin=.make.output) 2>&1



__BUILDXX = $(CXX) $(CXXFLAGS) -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(@F)) $(LDFLAGS)

__BUILDXX = $(CXX) $(CXXFLAGS) -MD -Wall -Werror -o $@ $(patsubst %.bin,%.cpp,$(@F)) $(LDFLAGS)

  BUILDXX = $(__BUILDXX) > $(@:.bin=.make.output) 2>&1



###############################
@@ -175,7 +175,7 @@ $(OUTPUT)test-libperl.bin: 
	$(BUILD) $(FLAGS_PERL_EMBED)



$(OUTPUT)test-libpython.bin:

	$(BUILD)

	$(BUILD) $(FLAGS_PYTHON_EMBED)



$(OUTPUT)test-libpython-version.bin:

	$(BUILD)

tools/perf/Documentation/perf-trace.txt

+2 −1
Original line number Diff line number Diff line
@@ -123,7 +123,8 @@ the thread executes on the designated CPUs. Default is to monitor all CPUs. 
	major or all pagefaults. Default value is maj.



--syscalls::

	Trace system calls. This options is enabled by default.

	Trace system calls. This options is enabled by default, disable with

	--no-syscalls.



--call-graph [mode,type,min[,limit],order[,key][,branch]]::

        Setup and enable call-graph (stack chain/backtrace) recording.

tools/perf/Makefile.config

+15 −20
Original line number Diff line number Diff line
@@ -170,14 +170,21 @@ PYTHON2_CONFIG := \ 
override PYTHON_CONFIG := \

  $(call get-executable-or-default,PYTHON_CONFIG,$(PYTHON2_CONFIG))



grep-libs  = $(filter -l%,$(1))

strip-libs  = $(filter-out -l%,$(1))



PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))



ifdef PYTHON_CONFIG

  PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null)

  PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))

  PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil

  PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null)



  ifeq ($(CC), clang)

    PYTHON_EMBED_CCOPTS := $(filter-out -specs=%,$(PYTHON_EMBED_CCOPTS))

  endif

  FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)

endif



FEATURE_CHECK_CFLAGS-libpython := $(PYTHON_EMBED_CCOPTS)

FEATURE_CHECK_LDFLAGS-libpython := $(PYTHON_EMBED_LDOPTS)
@@ -267,6 +274,7 @@ ifdef NO_LIBELF 
  NO_LIBUNWIND := 1

  NO_LIBDW_DWARF_UNWIND := 1

  NO_LIBBPF := 1

  NO_JVMTI := 1

else

  ifeq ($(feature-libelf), 0)

    ifeq ($(feature-glibc), 1)
@@ -276,7 +284,7 @@ else 
      LIBC_SUPPORT := 1

    endif

    ifeq ($(LIBC_SUPPORT),1)

      msg := $(warning No libelf found, disables 'probe' tool and BPF support in 'perf record', please install libelf-dev, libelf-devel or elfutils-libelf-devel);

      msg := $(warning No libelf found. Disables 'probe' tool, jvmti and BPF support in 'perf record'. Please install libelf-dev, libelf-devel or elfutils-libelf-devel);



      NO_LIBELF := 1

      NO_DWARF := 1
@@ -284,6 +292,7 @@ else 
      NO_LIBUNWIND := 1

      NO_LIBDW_DWARF_UNWIND := 1

      NO_LIBBPF := 1

      NO_JVMTI := 1

    else

      ifneq ($(filter s% -static%,$(LDFLAGS),),)

        msg := $(error No static glibc found, please install glibc-static);
@@ -554,8 +563,6 @@ ifndef NO_GTK2 
  endif

endif



grep-libs  = $(filter -l%,$(1))

strip-libs = $(filter-out -l%,$(1))



ifdef NO_LIBPERL

  CFLAGS += -DNO_LIBPERL
@@ -603,21 +610,9 @@ else 
      $(call disable-python,No 'python-config' tool was found: disables Python support - please install python-devel/python-dev)

    else



      PYTHON_CONFIG_SQ := $(call shell-sq,$(PYTHON_CONFIG))



      PYTHON_EMBED_LDOPTS := $(shell $(PYTHON_CONFIG_SQ) --ldflags 2>/dev/null)

      PYTHON_EMBED_LDFLAGS := $(call strip-libs,$(PYTHON_EMBED_LDOPTS))

      PYTHON_EMBED_LIBADD := $(call grep-libs,$(PYTHON_EMBED_LDOPTS)) -lutil

      PYTHON_EMBED_CCOPTS := $(shell $(PYTHON_CONFIG_SQ) --cflags 2>/dev/null)

      ifeq ($(CC), clang)

        PYTHON_EMBED_CCOPTS := $(filter-out -specs=%,$(PYTHON_EMBED_CCOPTS))

      endif

      FLAGS_PYTHON_EMBED := $(PYTHON_EMBED_CCOPTS) $(PYTHON_EMBED_LDOPTS)



      ifneq ($(feature-libpython), 1)

        $(call disable-python,No 'Python.h' (for Python 2.x support) was found: disables Python support - please install python-devel/python-dev)

      else



        ifneq ($(feature-libpython-version), 1)

          $(warning Python 3 is not yet supported; please set)

          $(warning PYTHON and/or PYTHON_CONFIG appropriately.)

tools/perf/builtin-stat.c

+9 −3
Original line number Diff line number Diff line
@@ -312,8 +312,12 @@ static int read_counter(struct perf_evsel *counter) 
			struct perf_counts_values *count;



			count = perf_counts(counter->counts, cpu, thread);

			if (perf_evsel__read(counter, cpu, thread, count))

			if (perf_evsel__read(counter, cpu, thread, count)) {

				counter->counts->scaled = -1;

				perf_counts(counter->counts, cpu, thread)->ena = 0;

				perf_counts(counter->counts, cpu, thread)->run = 0;

				return -1;

			}



			if (STAT_RECORD) {

				if (perf_evsel__write_stat_event(counter, cpu, thread, count)) {
@@ -338,12 +342,14 @@ static int read_counter(struct perf_evsel *counter) 
static void read_counters(void)

{

	struct perf_evsel *counter;

	int ret;



	evlist__for_each_entry(evsel_list, counter) {

		if (read_counter(counter))

		ret = read_counter(counter);

		if (ret)

			pr_debug("failed to read counter %s\n", counter->name);



		if (perf_stat_process_counter(&stat_config, counter))

		if (ret == 0 && perf_stat_process_counter(&stat_config, counter))

			pr_warning("failed to process counter %s\n", counter->name);

	}

}

tools/perf/util/event.c

+1 −1
Original line number Diff line number Diff line 
#include <linux/types.h>

#include <linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */

#include <uapi/linux/mman.h> /* To get things like MAP_HUGETLB even on older libc headers */

#include <api/fs/fs.h>

#include "event.h"

#include "debug.h"

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