perf tools: Fix dependency for version file creation

The version generated by perf may not be correct by just changing the
head commit, like this:

  $ git log --pretty=format:"%H" -n 1
  b5d9d4708a24ac1889a30e9aedf8af8d73102139
  $ perf -v
  perf version 5.16.gb5d9d4708a24
  $ git reset --hard HEAD^
  HEAD is now at 629f520b265f
  $ make
  ...
  $ ./perf -v
  perf version 5.16.gb5d9d4708a24

The dependency to building PERF-VERSION-FILE should also include ORIG_HEAD,
as this changes when changing the head commit (while HEAD does not).

Signed-off-by: John Garry <john.garry@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <rric@kernel.org>
Link: https://lore.kernel.org/r/1645449409-158238-2-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index ac861e4..9c935f8 100644 (file)
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -691,7 +691,7 @@ $(OUTPUT)common-cmds.h: $(wildcard Documentation/perf-*.txt)
 $(SCRIPTS) : % : %.sh
        $(QUIET_GEN)$(INSTALL) '$@.sh' '$(OUTPUT)$@'
 
-$(OUTPUT)PERF-VERSION-FILE: ../../.git/HEAD
+$(OUTPUT)PERF-VERSION-FILE: ../../.git/HEAD ../../.git/ORIG_HEAD
        $(Q)$(SHELL_PATH) util/PERF-VERSION-GEN $(OUTPUT)
        $(Q)touch $(OUTPUT)PERF-VERSION-FILE
 
@@ -1144,7 +1144,7 @@ endif
 # then force version regeneration:
 #
 ifeq ($(wildcard ../../.git/HEAD),)
-    GIT-HEAD-PHONY = ../../.git/HEAD
+    GIT-HEAD-PHONY = ../../.git/HEAD ../../.git/ORIG_HEAD
 else
     GIT-HEAD-PHONY =
 endif