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libperf: Make libperf.a part of the perf build 

Add an empty libperf.a under tools/perf/lib and link it with perf.

It can also be built separately with:

  $ cd tools/perf/lib && make
    CC       core.o
    LD       libperf-in.o
    AR       libperf.a
    LINK     libperf.so

Committer testing:

  $ make O=/tmp/build/perf -C tools/perf/lib/
  make: Entering directory '/home/acme/git/perf/tools/perf/lib'
    LINK     /tmp/build/perf/libperf.so
  make: Leaving directory '/home/acme/git/perf/tools/perf/lib'
  $ ls -la /tmp/build/perf/libperf.so
  -rwxrwxr-x. 1 acme acme 16232 Jul 22 15:30 /tmp/build/perf/libperf.so
  $ file /tmp/build/perf/libperf.so
  /tmp/build/perf/libperf.so: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=7a51d227d871b381ddb686dcf94145c4dd908221, not stripped
  $ git status tools/perf
  On branch perf/core
  nothing to commit, working tree clean
  $
  $ ls -lart tools/perf/lib/
  total 16
  drwxrwxr-x. 16 acme acme 4096 Jul 22 15:29 ..
  -rw-rw-r--.  1 acme acme 1633 Jul 22 15:29 Makefile
  -rw-rw-r--.  1 acme acme    0 Jul 22 15:29 core.c
  -rw-rw-r--.  1 acme acme   20 Jul 22 15:29 Build
  drwxrwxr-x.  2 acme acme 4096 Jul 22 15:29 .
  $

Committer notes:

Need to add -I$(srctree)/tools/arch/$(ARCH)/include/uapi
-I$(srctree)/tools/include/uapi to tools/perf/lib/Makefile's INCLUDE
variable to pick up the latest versions of kernel headers, even in older
systems, this is in line with what is in tools/lib/bpf/Makefile.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190721112506.12306-24-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2019-07-21 13:24:10 +02:00 committed by Arnaldo Carvalho de Melo
parent e74676deba
commit 3143504918
5 changed files with 92 additions and 14 deletions
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1
tools/perf/Makefile.config
View File

@ -277,6 +277,7 @@ ifeq ($(DEBUG),0)
endif
endif
INC_FLAGS += -I$(src-perf)/lib/include
INC_FLAGS += -I$(src-perf)/util/include
INC_FLAGS += -I$(src-perf)/arch/$(SRCARCH)/include
INC_FLAGS += -I$(srctree)/tools/include/uapi

30
tools/perf/Makefile.perf
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@ -224,6 +224,7 @@ LIB_DIR = $(srctree)/tools/lib/api/
TRACE_EVENT_DIR = $(srctree)/tools/lib/traceevent/
BPF_DIR = $(srctree)/tools/lib/bpf/
SUBCMD_DIR = $(srctree)/tools/lib/subcmd/
LIBPERF_DIR = $(srctree)/tools/perf/lib/
# Set FEATURE_TESTS to 'all' so all possible feature checkers are executed.
# Without this setting the output feature dump file misses some features, for
@ -272,6 +273,7 @@ ifneq ($(OUTPUT),)
TE_PATH=$(OUTPUT)
BPF_PATH=$(OUTPUT)
SUBCMD_PATH=$(OUTPUT)
LIBPERF_PATH=$(OUTPUT)
ifneq ($(subdir),)
API_PATH=$(OUTPUT)/../lib/api/
else
@ -282,6 +284,7 @@ else
API_PATH=$(LIB_DIR)
BPF_PATH=$(BPF_DIR)
SUBCMD_PATH=$(SUBCMD_DIR)
LIBPERF_PATH=$(LIBPERF_DIR)
endif
LIBTRACEEVENT = $(TE_PATH)libtraceevent.a
@ -303,6 +306,8 @@ LIBBPF = $(BPF_PATH)libbpf.a
LIBSUBCMD = $(SUBCMD_PATH)libsubcmd.a
LIBPERF = $(LIBPERF_PATH)libperf.a
# python extension build directories
PYTHON_EXTBUILD := $(OUTPUT)python_ext_build/
PYTHON_EXTBUILD_LIB := $(PYTHON_EXTBUILD)lib/
@ -348,9 +353,7 @@ endif
export PERL_PATH
LIBPERF_A=$(OUTPUT)libperf.a
PERFLIBS = $(LIBAPI) $(LIBTRACEEVENT) $(LIBSUBCMD)
PERFLIBS = $(LIBAPI) $(LIBTRACEEVENT) $(LIBSUBCMD) $(LIBPERF)
ifndef NO_LIBBPF
PERFLIBS += $(LIBBPF)
endif
@ -583,8 +586,6 @@ JEVENTS_IN := $(OUTPUT)pmu-events/jevents-in.o
PMU_EVENTS_IN := $(OUTPUT)pmu-events/pmu-events-in.o
LIBPERF_IN := $(OUTPUT)libperf-in.o
export JEVENTS
build := -f $(srctree)/tools/build/Makefile.build dir=. obj
@ -601,12 +602,9 @@ $(JEVENTS): $(JEVENTS_IN)
$(PMU_EVENTS_IN): $(JEVENTS) FORCE
$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=pmu-events obj=pmu-events
$(LIBPERF_IN): prepare FORCE
$(Q)$(MAKE) $(build)=libperf
$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBPERF_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
$(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBTRACEEVENT_DYNAMIC_LIST)
$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS) \
$(PERF_IN) $(PMU_EVENTS_IN) $(LIBPERF_IN) $(LIBS) -o $@
$(PERF_IN) $(PMU_EVENTS_IN) $(LIBS) -o $@
$(GTK_IN): FORCE
$(Q)$(MAKE) $(build)=gtk
@ -727,9 +725,6 @@ endif
$(patsubst perf-%,%.o,$(PROGRAMS)): $(wildcard */*.h)
$(LIBPERF_A): $(LIBPERF_IN)
$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIBPERF_IN) $(LIB_OBJS)
LIBTRACEEVENT_FLAGS += plugin_dir=$(plugindir_SQ) 'EXTRA_CFLAGS=$(EXTRA_CFLAGS)' 'LDFLAGS=$(LDFLAGS)'
$(LIBTRACEEVENT): FORCE
@ -762,6 +757,13 @@ $(LIBBPF)-clean:
$(call QUIET_CLEAN, libbpf)
$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) clean >/dev/null
$(LIBPERF): FORCE
$(Q)$(MAKE) -C $(LIBPERF_DIR) O=$(OUTPUT) $(OUTPUT)libperf.a
$(LIBPERF)-clean:
$(call QUIET_CLEAN, libperf)
$(Q)$(MAKE) -C $(LIBPERF_DIR) O=$(OUTPUT) clean >/dev/null
$(LIBSUBCMD): FORCE
$(Q)$(MAKE) -C $(SUBCMD_DIR) O=$(OUTPUT) $(OUTPUT)libsubcmd.a
@ -948,7 +950,7 @@ config-clean:
python-clean:
$(python-clean)
clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clean config-clean fixdep-clean python-clean
clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clean $(LIBPERF)-clean config-clean fixdep-clean python-clean
$(call QUIET_CLEAN, core-objs) $(RM) $(LIBPERF_A) $(OUTPUT)perf-archive $(OUTPUT)perf-with-kcore $(LANG_BINDINGS)
$(Q)find $(if $(OUTPUT),$(OUTPUT),.) -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
$(Q)$(RM) $(OUTPUT).config-detected

1
tools/perf/lib/Build Normal file
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@ -0,0 +1 @@
libperf-y += core.o

74
tools/perf/lib/Makefile Normal file
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@ -0,0 +1,74 @@
# SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
# Most of this file is copied from tools/lib/bpf/Makefile
MAKEFLAGS += --no-print-directory
ifeq ($(srctree),)
srctree := $(patsubst %/,%,$(dir $(CURDIR)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
srctree := $(patsubst %/,%,$(dir $(srctree)))
#$(info Determined 'srctree' to be $(srctree))
endif
include $(srctree)/tools/scripts/Makefile.include
include $(srctree)/tools/scripts/Makefile.arch
ifeq ("$(origin V)", "command line")
VERBOSE = $(V)
endif
ifndef VERBOSE
VERBOSE = 0
endif
ifeq ($(VERBOSE),1)
Q =
else
Q = @
endif
# Set compile option CFLAGS
ifdef EXTRA_CFLAGS
CFLAGS := $(EXTRA_CFLAGS)
else
CFLAGS := -g -Wall
endif
INCLUDES = -I$(srctree)/tools/perf/lib/include -I$(srctree)/tools/include -I$(srctree)/tools/arch/$(ARCH)/include/ -I$(srctree)/tools/arch/$(ARCH)/include/uapi -I$(srctree)/tools/include/uapi
# Append required CFLAGS
override CFLAGS += $(EXTRA_WARNINGS)
override CFLAGS += -Werror -Wall
override CFLAGS += -fPIC
override CFLAGS += $(INCLUDES)
override CFLAGS += -fvisibility=hidden
all:
export srctree OUTPUT CC LD CFLAGS V
include $(srctree)/tools/build/Makefile.include
LIBPERF_SO := $(OUTPUT)libperf.so
LIBPERF_A := $(OUTPUT)libperf.a
LIBPERF_IN := $(OUTPUT)libperf-in.o
$(LIBPERF_IN): FORCE
$(Q)$(MAKE) $(build)=libperf
$(LIBPERF_A): $(LIBPERF_IN)
$(QUIET_AR)$(RM) $@ && $(AR) rcs $@ $(LIBPERF_IN)
$(LIBPERF_SO): $(LIBPERF_IN)
$(QUIET_LINK)$(CC) --shared -Wl,-soname,libperf.so $^ -o $@
libs: $(LIBPERF_A) $(LIBPERF_SO)
all: fixdep
$(Q)$(MAKE) libs
clean:
$(call QUIET_CLEAN, libperf) $(RM) $(LIBPERF_A) \
*.o *~ *.a *.so .*.d .*.cmd LIBPERF-CFLAGS
FORCE:
.PHONY: all install clean FORCE

0
tools/perf/lib/core.c Normal file
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