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Groups > linux.kernel > #1536970 > unrolled thread

[PATCHv2 0/4] perf tools: Force fixdep to be built first

Started byJiri Olsa <jolsa@kernel.org>
First post2016-12-06 14:20 +0100
Last post2016-12-06 17:20 +0100
Articles 7 — 3 participants

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Contents

  [PATCHv2 0/4] perf tools: Force fixdep to be built first Jiri Olsa <jolsa@kernel.org> - 2016-12-06 14:20 +0100
    [PATCH 3/4] perf tools: Move perf build related variables under non fixdep leg Jiri Olsa <jolsa@kernel.org> - 2016-12-06 14:30 +0100
      [tip:perf/core] perf tools: Move perf build related variables under  non fixdep leg tip-bot for Jiri Olsa <tipbot@zytor.com> - 2016-12-07 19:30 +0100
    [PATCH 2/4] perf tools: Force fixdep compilation at the start of the build Jiri Olsa <jolsa@kernel.org> - 2016-12-06 14:30 +0100
      [tip:perf/core] perf tools: Force fixdep compilation at the start  of the build tip-bot for Jiri Olsa <tipbot@zytor.com> - 2016-12-07 19:30 +0100
    [PATCH 4/4] perf tools: Move headers check into bash script Jiri Olsa <jolsa@kernel.org> - 2016-12-06 14:30 +0100
    Re: [PATCHv2 0/4] perf tools: Force fixdep to be built first Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-12-06 17:20 +0100

#1536970 — [PATCHv2 0/4] perf tools: Force fixdep to be built first

FromJiri Olsa <jolsa@kernel.org>
Date2016-12-06 14:20 +0100
Subject[PATCHv2 0/4] perf tools: Force fixdep to be built first
Message-ID<sLnP3-2vS-21@gated-at.bofh.it>
hi,
changing Makefile.perf to force building fixdep before everything
else, in order to avoid fixdep build races due to forgotten dependencies.

And some build fixes that piled up around the fixdep change.

Available also here:
  git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
  perf/fixes

v2 changes:
  - keep the fixdep code more separated from the rest
  - added check-headers.sh script
  - added 2 extra fixes

thanks,
jirka


---
Jiri Olsa (4):
      perf tools: Move PERF-VERSION-FILE target into rules area
      perf tools: Force fixdep compilation at the start of the build
      perf tools: Move perf build related variables under non fixdep leg
      perf tools: Move headers check into bash script

 tools/perf/Makefile.perf    | 162 +++++++++++++++++++++++++++++++------------------------------------------------------------------------
 tools/perf/check-headers.sh |  59 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 107 insertions(+), 114 deletions(-)
 create mode 100755 tools/perf/check-headers.sh

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#1536972 — [PATCH 3/4] perf tools: Move perf build related variables under non fixdep leg

FromJiri Olsa <jolsa@kernel.org>
Date2016-12-06 14:30 +0100
Subject[PATCH 3/4] perf tools: Move perf build related variables under non fixdep leg
Message-ID<sLnYJ-2zf-1@gated-at.bofh.it>
In reply to#1536970
Because there's no need for them in fixdep build.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-0ta7fwl6pb4xnp8b3vddcbpt@git.kernel.org
---
 tools/perf/Makefile.perf | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 33b1d9f8555f..8f1c258b151a 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -164,11 +164,6 @@ BISON   = bison
 STRIP   = strip
 AWK     = awk
 
-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/
-
 # include Makefile.config by default and rule out
 # non-config cases
 config := 1
@@ -210,6 +205,11 @@ sub-make: fixdep
 
 else # force_fixdep
 
+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/
+
 # Set FEATURE_TESTS to 'all' so all possible feature checkers are executed.
 # Without this setting the output feature dump file misses some features, for
 # example, liberty. Select all checkers so we won't get an incomplete feature
-- 
2.7.4

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#1537976 — [tip:perf/core] perf tools: Move perf build related variables under non fixdep leg

Fromtip-bot for Jiri Olsa <tipbot@zytor.com>
Date2016-12-07 19:30 +0100
Subject[tip:perf/core] perf tools: Move perf build related variables under non fixdep leg
Message-ID<sLP8B-3DP-11@gated-at.bofh.it>
In reply to#1536972
Commit-ID:  8ac1eb7bab7c8d9d6f00b3e2a408611c45d9dff0
Gitweb:     http://git.kernel.org/tip/8ac1eb7bab7c8d9d6f00b3e2a408611c45d9dff0
Author:     Jiri Olsa <jolsa@kernel.org>
AuthorDate: Tue, 6 Dec 2016 14:18:50 +0100
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 6 Dec 2016 13:23:03 -0300

perf tools: Move perf build related variables under non fixdep leg

Because there's no need for them in fixdep build.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1481030331-31944-4-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Makefile.perf | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 33b1d9f..8f1c258 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -164,11 +164,6 @@ BISON   = bison
 STRIP   = strip
 AWK     = awk
 
-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/
-
 # include Makefile.config by default and rule out
 # non-config cases
 config := 1
@@ -210,6 +205,11 @@ sub-make: fixdep
 
 else # force_fixdep
 
+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/
+
 # Set FEATURE_TESTS to 'all' so all possible feature checkers are executed.
 # Without this setting the output feature dump file misses some features, for
 # example, liberty. Select all checkers so we won't get an incomplete feature

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#1536974 — [PATCH 2/4] perf tools: Force fixdep compilation at the start of the build

FromJiri Olsa <jolsa@kernel.org>
Date2016-12-06 14:30 +0100
Subject[PATCH 2/4] perf tools: Force fixdep compilation at the start of the build
Message-ID<sLnYJ-2zf-15@gated-at.bofh.it>
In reply to#1536970
The fixdep tool needs to be built before everything else,
because it fixes every object dependency file.

We handle this currently by making all objects to depend
on fixdep, which is error prone and is easily forgotten
when new object is added.

Instead of this, this patch force fixdep tool to be built
as the first target in the separate make session. This way
we don't need to handle extra fixdep dependencies and we are
certain there's no fixdep race with any parallel make job.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-b6wi5cssl8apu74o2kbfheag@git.kernel.org
---
 tools/perf/Makefile.perf | 50 ++++++++++++++++++++++++++++++++++++------------
 1 file changed, 38 insertions(+), 12 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 9e5a6e1a387d..33b1d9f8555f 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -181,6 +181,35 @@ ifeq ($(filter-out $(NON_CONFIG_TARGETS),$(MAKECMDGOALS)),)
 endif
 endif
 
+# The fixdep build - we force fixdep tool to be built as
+# the first target in the separate make session not to be
+# disturbed by any parallel make jobs. Once fixdep is done
+# we issue the requested build with FIXDEP=1 variable.
+#
+# The fixdep build is disabled for $(NON_CONFIG_TARGETS)
+# targets, because it's not necessary.
+
+ifdef FIXDEP
+  force_fixdep := 0
+else
+  force_fixdep := $(config)
+endif
+
+export srctree OUTPUT RM CC CXX LD AR CFLAGS CXXFLAGS V BISON FLEX AWK
+export HOSTCC HOSTLD HOSTAR
+
+include $(srctree)/tools/build/Makefile.include
+
+ifeq ($(force_fixdep),1)
+goals := $(filter-out all sub-make, $(MAKECMDGOALS))
+
+$(goals) all: sub-make
+
+sub-make: fixdep
+	$(Q)$(MAKE) FIXDEP=1 -f Makefile.perf $(goals)
+
+else # force_fixdep
+
 # Set FEATURE_TESTS to 'all' so all possible feature checkers are executed.
 # Without this setting the output feature dump file misses some features, for
 # example, liberty. Select all checkers so we won't get an incomplete feature
@@ -365,10 +394,6 @@ strip: $(PROGRAMS) $(OUTPUT)perf
 
 PERF_IN := $(OUTPUT)perf-in.o
 
-export srctree OUTPUT RM CC CXX LD AR CFLAGS CXXFLAGS V BISON FLEX AWK
-export HOSTCC HOSTLD HOSTAR
-include $(srctree)/tools/build/Makefile.include
-
 JEVENTS       := $(OUTPUT)pmu-events/jevents
 JEVENTS_IN    := $(OUTPUT)pmu-events/jevents-in.o
 
@@ -487,7 +512,7 @@ $(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBTRACEEVENT_DYNAMIC_L
 	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS) \
 		$(PERF_IN) $(PMU_EVENTS_IN) $(LIBS) -o $@
 
-$(GTK_IN): fixdep FORCE
+$(GTK_IN): FORCE
 	$(Q)$(MAKE) $(build)=gtk
 
 $(OUTPUT)libperf-gtk.so: $(GTK_IN) $(PERFLIBS)
@@ -536,7 +561,7 @@ endif
 __build-dir = $(subst $(OUTPUT),,$(dir $@))
 build-dir   = $(if $(__build-dir),$(__build-dir),.)
 
-prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h fixdep archheaders
+prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders
 
 $(OUTPUT)%.o: %.c prepare FORCE
 	$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
@@ -586,7 +611,7 @@ $(patsubst perf-%,%.o,$(PROGRAMS)): $(wildcard */*.h)
 
 LIBPERF_IN := $(OUTPUT)libperf-in.o
 
-$(LIBPERF_IN): prepare fixdep FORCE
+$(LIBPERF_IN): prepare FORCE
 	$(Q)$(MAKE) $(build)=libperf
 
 $(LIB_FILE): $(LIBPERF_IN)
@@ -594,10 +619,10 @@ $(LIB_FILE): $(LIBPERF_IN)
 
 LIBTRACEEVENT_FLAGS += plugin_dir=$(plugindir_SQ)
 
-$(LIBTRACEEVENT): fixdep FORCE
+$(LIBTRACEEVENT): FORCE
 	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent.a
 
-libtraceevent_plugins: fixdep FORCE
+libtraceevent_plugins: FORCE
 	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) plugins
 
 $(LIBTRACEEVENT_DYNAMIC_LIST): libtraceevent_plugins
@@ -610,21 +635,21 @@ $(LIBTRACEEVENT)-clean:
 install-traceevent-plugins: libtraceevent_plugins
 	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) install_plugins
 
-$(LIBAPI): fixdep FORCE
+$(LIBAPI): FORCE
 	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) $(OUTPUT)libapi.a
 
 $(LIBAPI)-clean:
 	$(call QUIET_CLEAN, libapi)
 	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) clean >/dev/null
 
-$(LIBBPF): fixdep FORCE
+$(LIBBPF): FORCE
 	$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) $(OUTPUT)libbpf.a FEATURES_DUMP=$(FEATURE_DUMP_EXPORT)
 
 $(LIBBPF)-clean:
 	$(call QUIET_CLEAN, libbpf)
 	$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) clean >/dev/null
 
-$(LIBSUBCMD): fixdep FORCE
+$(LIBSUBCMD): FORCE
 	$(Q)$(MAKE) -C $(SUBCMD_DIR) O=$(OUTPUT) $(OUTPUT)libsubcmd.a
 
 $(LIBSUBCMD)-clean:
@@ -832,3 +857,4 @@ FORCE:
 .PHONY: $(GIT-HEAD-PHONY) TAGS tags cscope FORCE prepare
 .PHONY: libtraceevent_plugins archheaders
 
+endif # force_fixdep
-- 
2.7.4

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#1537979 — [tip:perf/core] perf tools: Force fixdep compilation at the start of the build

Fromtip-bot for Jiri Olsa <tipbot@zytor.com>
Date2016-12-07 19:30 +0100
Subject[tip:perf/core] perf tools: Force fixdep compilation at the start of the build
Message-ID<sLP8B-3DP-31@gated-at.bofh.it>
In reply to#1536974
Commit-ID:  abb26210a39522a6645bce3f438ed9a26bedb11b
Gitweb:     http://git.kernel.org/tip/abb26210a39522a6645bce3f438ed9a26bedb11b
Author:     Jiri Olsa <jolsa@kernel.org>
AuthorDate: Tue, 6 Dec 2016 14:18:49 +0100
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Tue, 6 Dec 2016 13:23:02 -0300

perf tools: Force fixdep compilation at the start of the build

The fixdep tool needs to be built before everything else, because it fixes
every object dependency file.

We handle this currently by making all objects to depend on fixdep, which is
error prone and is easily forgotten when new object is added.

Instead of this, this patch force fixdep tool to be built as the first target
in the separate make session. This way we don't need to handle extra fixdep
dependencies and we are certain there's no fixdep race with any parallel make
job.

Committer notes:

Testing it:

Before:

  $ rm -rf /tmp/build/perf/ ; mkdir -p /tmp/build/perf ; make -k O=/tmp/build/perf -C tools/perf install-bin
  make: Entering directory '/home/acme/git/linux/tools/perf'
    BUILD:   Doing 'make -j4' parallel build

  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...            dwarf_getlocations: [ on  ]
  ...                         glibc: [ on  ]
  ...                          gtk2: [ on  ]
  ...                      libaudit: [ on  ]
  ...                        libbfd: [ on  ]
  ...                        libelf: [ on  ]
  ...                       libnuma: [ on  ]
  ...        numa_num_possible_cpus: [ on  ]
  ...                       libperl: [ on  ]
  ...                     libpython: [ on  ]
  ...                      libslang: [ on  ]
  ...                     libcrypto: [ on  ]
  ...                     libunwind: [ on  ]
  ...            libdw-dwarf-unwind: [ on  ]
  ...                          zlib: [ on  ]
  ...                          lzma: [ on  ]
  ...                     get_cpuid: [ on  ]
  ...                           bpf: [ on  ]

    GEN      /tmp/build/perf/common-cmds.h
    HOSTCC   /tmp/build/perf/fixdep.o
    HOSTLD   /tmp/build/perf/fixdep-in.o
    LINK     /tmp/build/perf/fixdep
    MKDIR    /tmp/build/perf/pmu-events/
    HOSTCC   /tmp/build/perf/pmu-events/json.o
    MKDIR    /tmp/build/perf/pmu-events/
    HOSTCC   /tmp/build/perf/pmu-events/jsmn.o
    HOSTCC   /tmp/build/perf/pmu-events/jevents.o
    HOSTLD   /tmp/build/perf/pmu-events/jevents-in.o
    PERF_VERSION = 4.9.rc8.g868cd5
    CC       /tmp/build/perf/perf-read-vdso32
  <SNIP>

After:

  $ rm -rf /tmp/build/perf/ ; mkdir -p /tmp/build/perf ; make -k O=/tmp/build/perf -C tools/perf install-bin
  make: Entering directory '/home/acme/git/linux/tools/perf'
    BUILD:   Doing 'make -j4' parallel build
    HOSTCC   /tmp/build/perf/fixdep.o
    HOSTLD   /tmp/build/perf/fixdep-in.o
    LINK     /tmp/build/perf/fixdep

  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...            dwarf_getlocations: [ on  ]
  ...                         glibc: [ on  ]
  ...                          gtk2: [ on  ]
  ...                      libaudit: [ on  ]
  ...                        libbfd: [ on  ]
  ...                        libelf: [ on  ]
  ...                       libnuma: [ on  ]
  ...        numa_num_possible_cpus: [ on  ]
  ...                       libperl: [ on  ]
  ...                     libpython: [ on  ]
  ...                      libslang: [ on  ]
  ...                     libcrypto: [ on  ]
  ...                     libunwind: [ on  ]
  ...            libdw-dwarf-unwind: [ on  ]
  ...                          zlib: [ on  ]
  ...                          lzma: [ on  ]
  ...                     get_cpuid: [ on  ]
  ...                           bpf: [ on  ]

    GEN      /tmp/build/perf/common-cmds.h
    MKDIR    /tmp/build/perf/fd/
    CC       /tmp/build/perf/fd/array.o
    LD       /tmp/build/perf/fd/libapi-in.o
    MKDIR    /tmp/build/perf/fs/
    CC       /tmp/build/perf/event-parse.o
    CC       /tmp/build/perf/fs/fs.o
    PERF_VERSION = 4.9.rc8.g57a92f
    CC       /tmp/build/perf/event-plugin.o
    MKDIR    /tmp/build/perf/fs/
    CC       /tmp/build/perf/fs/tracing_path.o
  <SNIP>

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1481030331-31944-3-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/Makefile.perf | 50 ++++++++++++++++++++++++++++++++++++------------
 1 file changed, 38 insertions(+), 12 deletions(-)

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 9e5a6e1..33b1d9f 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -181,6 +181,35 @@ ifeq ($(filter-out $(NON_CONFIG_TARGETS),$(MAKECMDGOALS)),)
 endif
 endif
 
+# The fixdep build - we force fixdep tool to be built as
+# the first target in the separate make session not to be
+# disturbed by any parallel make jobs. Once fixdep is done
+# we issue the requested build with FIXDEP=1 variable.
+#
+# The fixdep build is disabled for $(NON_CONFIG_TARGETS)
+# targets, because it's not necessary.
+
+ifdef FIXDEP
+  force_fixdep := 0
+else
+  force_fixdep := $(config)
+endif
+
+export srctree OUTPUT RM CC CXX LD AR CFLAGS CXXFLAGS V BISON FLEX AWK
+export HOSTCC HOSTLD HOSTAR
+
+include $(srctree)/tools/build/Makefile.include
+
+ifeq ($(force_fixdep),1)
+goals := $(filter-out all sub-make, $(MAKECMDGOALS))
+
+$(goals) all: sub-make
+
+sub-make: fixdep
+	$(Q)$(MAKE) FIXDEP=1 -f Makefile.perf $(goals)
+
+else # force_fixdep
+
 # Set FEATURE_TESTS to 'all' so all possible feature checkers are executed.
 # Without this setting the output feature dump file misses some features, for
 # example, liberty. Select all checkers so we won't get an incomplete feature
@@ -365,10 +394,6 @@ strip: $(PROGRAMS) $(OUTPUT)perf
 
 PERF_IN := $(OUTPUT)perf-in.o
 
-export srctree OUTPUT RM CC CXX LD AR CFLAGS CXXFLAGS V BISON FLEX AWK
-export HOSTCC HOSTLD HOSTAR
-include $(srctree)/tools/build/Makefile.include
-
 JEVENTS       := $(OUTPUT)pmu-events/jevents
 JEVENTS_IN    := $(OUTPUT)pmu-events/jevents-in.o
 
@@ -487,7 +512,7 @@ $(OUTPUT)perf: $(PERFLIBS) $(PERF_IN) $(PMU_EVENTS_IN) $(LIBTRACEEVENT_DYNAMIC_L
 	$(QUIET_LINK)$(CC) $(CFLAGS) $(LDFLAGS) $(LIBTRACEEVENT_DYNAMIC_LIST_LDFLAGS) \
 		$(PERF_IN) $(PMU_EVENTS_IN) $(LIBS) -o $@
 
-$(GTK_IN): fixdep FORCE
+$(GTK_IN): FORCE
 	$(Q)$(MAKE) $(build)=gtk
 
 $(OUTPUT)libperf-gtk.so: $(GTK_IN) $(PERFLIBS)
@@ -536,7 +561,7 @@ endif
 __build-dir = $(subst $(OUTPUT),,$(dir $@))
 build-dir   = $(if $(__build-dir),$(__build-dir),.)
 
-prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h fixdep archheaders
+prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders
 
 $(OUTPUT)%.o: %.c prepare FORCE
 	$(Q)$(MAKE) -f $(srctree)/tools/build/Makefile.build dir=$(build-dir) $@
@@ -586,7 +611,7 @@ $(patsubst perf-%,%.o,$(PROGRAMS)): $(wildcard */*.h)
 
 LIBPERF_IN := $(OUTPUT)libperf-in.o
 
-$(LIBPERF_IN): prepare fixdep FORCE
+$(LIBPERF_IN): prepare FORCE
 	$(Q)$(MAKE) $(build)=libperf
 
 $(LIB_FILE): $(LIBPERF_IN)
@@ -594,10 +619,10 @@ $(LIB_FILE): $(LIBPERF_IN)
 
 LIBTRACEEVENT_FLAGS += plugin_dir=$(plugindir_SQ)
 
-$(LIBTRACEEVENT): fixdep FORCE
+$(LIBTRACEEVENT): FORCE
 	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) $(OUTPUT)libtraceevent.a
 
-libtraceevent_plugins: fixdep FORCE
+libtraceevent_plugins: FORCE
 	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) plugins
 
 $(LIBTRACEEVENT_DYNAMIC_LIST): libtraceevent_plugins
@@ -610,21 +635,21 @@ $(LIBTRACEEVENT)-clean:
 install-traceevent-plugins: libtraceevent_plugins
 	$(Q)$(MAKE) -C $(TRACE_EVENT_DIR) $(LIBTRACEEVENT_FLAGS) O=$(OUTPUT) install_plugins
 
-$(LIBAPI): fixdep FORCE
+$(LIBAPI): FORCE
 	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) $(OUTPUT)libapi.a
 
 $(LIBAPI)-clean:
 	$(call QUIET_CLEAN, libapi)
 	$(Q)$(MAKE) -C $(LIB_DIR) O=$(OUTPUT) clean >/dev/null
 
-$(LIBBPF): fixdep FORCE
+$(LIBBPF): FORCE
 	$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) $(OUTPUT)libbpf.a FEATURES_DUMP=$(FEATURE_DUMP_EXPORT)
 
 $(LIBBPF)-clean:
 	$(call QUIET_CLEAN, libbpf)
 	$(Q)$(MAKE) -C $(BPF_DIR) O=$(OUTPUT) clean >/dev/null
 
-$(LIBSUBCMD): fixdep FORCE
+$(LIBSUBCMD): FORCE
 	$(Q)$(MAKE) -C $(SUBCMD_DIR) O=$(OUTPUT) $(OUTPUT)libsubcmd.a
 
 $(LIBSUBCMD)-clean:
@@ -832,3 +857,4 @@ FORCE:
 .PHONY: $(GIT-HEAD-PHONY) TAGS tags cscope FORCE prepare
 .PHONY: libtraceevent_plugins archheaders
 
+endif # force_fixdep

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#1536976 — [PATCH 4/4] perf tools: Move headers check into bash script

FromJiri Olsa <jolsa@kernel.org>
Date2016-12-06 14:30 +0100
Subject[PATCH 4/4] perf tools: Move headers check into bash script
Message-ID<sLnYJ-2zf-3@gated-at.bofh.it>
In reply to#1536970
To make it nicer and easily maintainable.

Also moving the check into fixdep sub make, so its
output is not scattered around the build output.

Removing extra $$ from mman*.h checks.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-q4jz6sags3jk2ajweq40tkgv@git.kernel.org
---
 tools/perf/Makefile.perf    | 94 +--------------------------------------------
 tools/perf/check-headers.sh | 59 ++++++++++++++++++++++++++++
 2 files changed, 60 insertions(+), 93 deletions(-)
 create mode 100755 tools/perf/check-headers.sh

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 8f1c258b151a..e9ec531131ca 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -201,6 +201,7 @@ goals := $(filter-out all sub-make, $(MAKECMDGOALS))
 $(goals) all: sub-make
 
 sub-make: fixdep
+	@./check-headers.sh
 	$(Q)$(MAKE) FIXDEP=1 -f Makefile.perf $(goals)
 
 else # force_fixdep
@@ -404,99 +405,6 @@ export JEVENTS
 build := -f $(srctree)/tools/build/Makefile.build dir=. obj
 
 $(PERF_IN): prepare FORCE
-	@(test -f ../../include/uapi/linux/perf_event.h && ( \
-        (diff -B ../include/uapi/linux/perf_event.h ../../include/uapi/linux/perf_event.h >/dev/null) \
-        || echo "Warning: tools/include/uapi/linux/perf_event.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/linux/hash.h && ( \
-        (diff -B ../include/linux/hash.h ../../include/linux/hash.h >/dev/null) \
-        || echo "Warning: tools/include/linux/hash.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/uapi/linux/hw_breakpoint.h && ( \
-        (diff -B ../include/uapi/linux/hw_breakpoint.h ../../include/uapi/linux/hw_breakpoint.h >/dev/null) \
-        || echo "Warning: tools/include/uapi/linux/hw_breakpoint.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/asm/disabled-features.h && ( \
-        (diff -B ../arch/x86/include/asm/disabled-features.h ../../arch/x86/include/asm/disabled-features.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/asm/disabled-features.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/asm/required-features.h && ( \
-        (diff -B ../arch/x86/include/asm/required-features.h ../../arch/x86/include/asm/required-features.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/asm/required-features.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/asm/cpufeatures.h && ( \
-        (diff -B ../arch/x86/include/asm/cpufeatures.h ../../arch/x86/include/asm/cpufeatures.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/asm/cpufeatures.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/lib/memcpy_64.S && ( \
-        (diff -B -I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" ../arch/x86/lib/memcpy_64.S ../../arch/x86/lib/memcpy_64.S >/dev/null) \
-        || echo "Warning: tools/arch/x86/lib/memcpy_64.S differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/lib/memset_64.S && ( \
-        (diff -B -I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>" ../arch/x86/lib/memset_64.S ../../arch/x86/lib/memset_64.S >/dev/null) \
-        || echo "Warning: tools/arch/x86/lib/memset_64.S differs from kernel" >&2 )) || true
-	@(test -f ../../arch/arm/include/uapi/asm/perf_regs.h && ( \
-        (diff -B ../arch/arm/include/uapi/asm/perf_regs.h ../../arch/arm/include/uapi/asm/perf_regs.h >/dev/null) \
-        || echo "Warning: tools/arch/arm/include/uapi/asm/perf_regs.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/arm64/include/uapi/asm/perf_regs.h && ( \
-        (diff -B ../arch/arm64/include/uapi/asm/perf_regs.h ../../arch/arm64/include/uapi/asm/perf_regs.h >/dev/null) \
-        || echo "Warning: tools/arch/arm64/include/uapi/asm/perf_regs.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/powerpc/include/uapi/asm/perf_regs.h && ( \
-        (diff -B ../arch/powerpc/include/uapi/asm/perf_regs.h ../../arch/powerpc/include/uapi/asm/perf_regs.h >/dev/null) \
-        || echo "Warning: tools/arch/powerpc/include/uapi/asm/perf_regs.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/uapi/asm/perf_regs.h && ( \
-        (diff -B ../arch/x86/include/uapi/asm/perf_regs.h ../../arch/x86/include/uapi/asm/perf_regs.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/uapi/asm/perf_regs.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/uapi/asm/kvm.h && ( \
-        (diff -B ../arch/x86/include/uapi/asm/kvm.h ../../arch/x86/include/uapi/asm/kvm.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/uapi/asm/kvm.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/uapi/asm/kvm_perf.h && ( \
-        (diff -B ../arch/x86/include/uapi/asm/kvm_perf.h ../../arch/x86/include/uapi/asm/kvm_perf.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/uapi/asm/kvm_perf.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/uapi/asm/svm.h && ( \
-        (diff -B ../arch/x86/include/uapi/asm/svm.h ../../arch/x86/include/uapi/asm/svm.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/uapi/asm/svm.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/x86/include/uapi/asm/vmx.h && ( \
-        (diff -B ../arch/x86/include/uapi/asm/vmx.h ../../arch/x86/include/uapi/asm/vmx.h >/dev/null) \
-        || echo "Warning: tools/arch/x86/include/uapi/asm/vmx.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/powerpc/include/uapi/asm/kvm.h && ( \
-        (diff -B ../arch/powerpc/include/uapi/asm/kvm.h ../../arch/powerpc/include/uapi/asm/kvm.h >/dev/null) \
-        || echo "Warning: tools/arch/powerpc/include/uapi/asm/kvm.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/s390/include/uapi/asm/kvm.h && ( \
-        (diff -B ../arch/s390/include/uapi/asm/kvm.h ../../arch/s390/include/uapi/asm/kvm.h >/dev/null) \
-        || echo "Warning: tools/arch/s390/include/uapi/asm/kvm.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/s390/include/uapi/asm/kvm_perf.h && ( \
-        (diff -B ../arch/s390/include/uapi/asm/kvm_perf.h ../../arch/s390/include/uapi/asm/kvm_perf.h >/dev/null) \
-        || echo "Warning: tools/arch/s390/include/uapi/asm/kvm_perf.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/s390/include/uapi/asm/sie.h && ( \
-        (diff -B ../arch/s390/include/uapi/asm/sie.h ../../arch/s390/include/uapi/asm/sie.h >/dev/null) \
-        || echo "Warning: tools/arch/s390/include/uapi/asm/sie.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/arm/include/uapi/asm/kvm.h && ( \
-        (diff -B ../arch/arm/include/uapi/asm/kvm.h ../../arch/arm/include/uapi/asm/kvm.h >/dev/null) \
-        || echo "Warning: tools/arch/arm/include/uapi/asm/kvm.h differs from kernel" >&2 )) || true
-	@(test -f ../../arch/arm64/include/uapi/asm/kvm.h && ( \
-        (diff -B ../arch/arm64/include/uapi/asm/kvm.h ../../arch/arm64/include/uapi/asm/kvm.h >/dev/null) \
-        || echo "Warning: tools/arch/arm64/include/uapi/asm/kvm.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/asm-generic/bitops/arch_hweight.h && ( \
-        (diff -B ../include/asm-generic/bitops/arch_hweight.h ../../include/asm-generic/bitops/arch_hweight.h >/dev/null) \
-        || echo "Warning: tools/include/asm-generic/bitops/arch_hweight.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/asm-generic/bitops/const_hweight.h && ( \
-        (diff -B ../include/asm-generic/bitops/const_hweight.h ../../include/asm-generic/bitops/const_hweight.h >/dev/null) \
-        || echo "Warning: tools/include/asm-generic/bitops/const_hweight.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/asm-generic/bitops/__fls.h && ( \
-        (diff -B ../include/asm-generic/bitops/__fls.h ../../include/asm-generic/bitops/__fls.h >/dev/null) \
-        || echo "Warning: tools/include/asm-generic/bitops/__fls.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/asm-generic/bitops/fls.h && ( \
-        (diff -B ../include/asm-generic/bitops/fls.h ../../include/asm-generic/bitops/fls.h >/dev/null) \
-        || echo "Warning: tools/include/asm-generic/bitops/fls.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/asm-generic/bitops/fls64.h && ( \
-        (diff -B ../include/asm-generic/bitops/fls64.h ../../include/asm-generic/bitops/fls64.h >/dev/null) \
-        || echo "Warning: tools/include/asm-generic/bitops/fls64.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/linux/coresight-pmu.h && ( \
-	(diff -B ../include/linux/coresight-pmu.h ../../include/linux/coresight-pmu.h >/dev/null) \
-	|| echo "Warning: tools/include/linux/coresight-pmu.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/uapi/asm-generic/mman-common.h && ( \
-	(diff -B ../include/uapi/asm-generic/mman-common.h ../../include/uapi/asm-generic/mman-common.h >/dev/null) \
-	|| echo "Warning: tools/include/uapi/asm-generic/mman-common.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/uapi/asm-generic/mman.h && ( \
-	(diff -B -I "^#include <\(uapi/\)*asm-generic/mman-common.h>$$" ../include/uapi/asm-generic/mman.h ../../include/uapi/asm-generic/mman.h >/dev/null) \
-	|| echo "Warning: tools/include/uapi/asm-generic/mman.h differs from kernel" >&2 )) || true
-	@(test -f ../../include/uapi/linux/mman.h && ( \
-	(diff -B -I "^#include <\(uapi/\)*asm/mman.h>$$" ../include/uapi/linux/mman.h ../../include/uapi/linux/mman.h >/dev/null) \
-	|| echo "Warning: tools/include/uapi/linux/mman.h differs from kernel" >&2 )) || true
 	$(Q)$(MAKE) $(build)=perf
 
 $(JEVENTS_IN): FORCE
diff --git a/tools/perf/check-headers.sh b/tools/perf/check-headers.sh
new file mode 100755
index 000000000000..fe5b557366c2
--- /dev/null
+++ b/tools/perf/check-headers.sh
@@ -0,0 +1,59 @@
+#!/bin/bash
+
+HEADERS='
+include/uapi/linux/perf_event.h
+include/linux/hash.h
+include/uapi/linux/hw_breakpoint.h
+arch/x86/include/asm/disabled-features.h
+arch/x86/include/asm/required-features.h
+arch/x86/include/asm/cpufeatures.h
+arch/arm/include/uapi/asm/perf_regs.h
+arch/arm64/include/uapi/asm/perf_regs.h
+arch/powerpc/include/uapi/asm/perf_regs.h
+arch/x86/include/uapi/asm/perf_regs.h
+arch/x86/include/uapi/asm/kvm.h
+arch/x86/include/uapi/asm/kvm_perf.h
+arch/x86/include/uapi/asm/svm.h
+arch/x86/include/uapi/asm/vmx.h
+arch/powerpc/include/uapi/asm/kvm.h
+arch/s390/include/uapi/asm/kvm.h
+arch/s390/include/uapi/asm/kvm_perf.h
+arch/s390/include/uapi/asm/sie.h
+arch/arm/include/uapi/asm/kvm.h
+arch/arm64/include/uapi/asm/kvm.h
+include/asm-generic/bitops/arch_hweight.h
+include/asm-generic/bitops/const_hweight.h
+include/asm-generic/bitops/__fls.h
+include/asm-generic/bitops/fls.h
+include/asm-generic/bitops/fls64.h
+include/linux/coresight-pmu.h
+include/uapi/asm-generic/mman-common.h
+'
+
+function check() {
+  file=$1
+  opts=
+
+  shift
+  while [ -n "$*" ]; do
+    opts="$opts \"$1\""
+    shift
+  done
+
+  cmd="diff $opts ../$file ../../$file > /dev/null"
+
+  test -f ../../$file &&
+  eval $cmd || echo "Warning: $file differs from kernel" >&2
+}
+
+
+# simple diff check
+for i in $HEADERS; do
+  check $i -B
+done
+
+# diff with extra ignore lines
+check arch/x86/lib/memcpy_64.S        -B -I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>"
+check arch/x86/lib/memset_64.S        -B -I "^EXPORT_SYMBOL" -I "^#include <asm/export.h>"
+check include/uapi/asm-generic/mman.h -B -I "^#include <\(uapi/\)*asm-generic/mman-common.h>"
+check include/uapi/linux/mman.h       -B -I "^#include <\(uapi/\)*asm/mman.h>"
-- 
2.7.4

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#1537083

FromArnaldo Carvalho de Melo <acme@kernel.org>
Date2016-12-06 17:20 +0100
Message-ID<sLqDf-4nB-13@gated-at.bofh.it>
In reply to#1536970
Em Tue, Dec 06, 2016 at 02:18:47PM +0100, Jiri Olsa escreveu:
> hi,
> changing Makefile.perf to force building fixdep before everything
> else, in order to avoid fixdep build races due to forgotten dependencies.
> 
> And some build fixes that piled up around the fixdep change.
> 
> Available also here:
>   git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
>   perf/fixes
> 
> v2 changes:
>   - keep the fixdep code more separated from the rest
>   - added check-headers.sh script
>   - added 2 extra fixes

Thanks, all tested and applied, passed the build-tests and container
based tests.

- Arnaldo
 
> thanks,
> jirka
> 
> 
> ---
> Jiri Olsa (4):
>       perf tools: Move PERF-VERSION-FILE target into rules area
>       perf tools: Force fixdep compilation at the start of the build
>       perf tools: Move perf build related variables under non fixdep leg
>       perf tools: Move headers check into bash script
> 
>  tools/perf/Makefile.perf    | 162 +++++++++++++++++++++++++++++++------------------------------------------------------------------------
>  tools/perf/check-headers.sh |  59 ++++++++++++++++++++++++++++++++++++++
>  2 files changed, 107 insertions(+), 114 deletions(-)
>  create mode 100755 tools/perf/check-headers.sh

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