perf build: Ensure sysreg-defs Makefile respects output dir

Currently the sysreg-defs are written out to the source tree
unconditionally, ignoring the specified output directory. Correct the
build rule to emit the header to the output directory. Opportunistically
reorganize the rules to avoid interleaving with the set of beauty make
rules.

Reported-by: Ian Rogers <irogers@google.com>
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
Link: https://lore.kernel.org/r/20231121192956.919380-3-oliver.upton@linux.dev
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

4 files changed, 20 insertions, 13 deletions

diff --git a/tools/arch/arm64/tools/Makefile b/tools/arch/arm64/tools/Makefile
index 7f64b8bb5107..7b42feedf647 100644
--- a/tools/arch/arm64/tools/Makefile
+++ b/tools/arch/arm64/tools/Makefile
@@ -22,7 +22,7 @@ endif
 arm64_tools_dir = $(top_srcdir)/arch/arm64/tools
 arm64_sysreg_tbl = $(arm64_tools_dir)/sysreg
 arm64_gen_sysreg = $(arm64_tools_dir)/gen-sysreg.awk
-arm64_generated_dir = $(top_srcdir)/tools/arch/arm64/include/generated
+arm64_generated_dir = $(OUTPUT)arch/arm64/include/generated
 arm64_sysreg_defs = $(arm64_generated_dir)/asm/sysreg-defs.h
 
 all: $(arm64_sysreg_defs)
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index d88da787e815..058c9aecf608 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -434,6 +434,21 @@ export INSTALL SHELL_PATH
 
 SHELL = $(SHELL_PATH)
 
+arm64_gen_sysreg_dir := $(srctree)/tools/arch/arm64/tools
+ifneq ($(OUTPUT),)
+  arm64_gen_sysreg_outdir := $(OUTPUT)
+else
+  arm64_gen_sysreg_outdir := $(CURDIR)
+endif
+
+arm64-sysreg-defs: FORCE
+	$(Q)$(MAKE) -C $(arm64_gen_sysreg_dir) O=$(arm64_gen_sysreg_outdir)
+
+arm64-sysreg-defs-clean:
+	$(call QUIET_CLEAN,arm64-sysreg-defs)
+	$(Q)$(MAKE) -C $(arm64_gen_sysreg_dir) O=$(arm64_gen_sysreg_outdir) \
+		clean > /dev/null
+
 beauty_linux_dir := $(srctree)/tools/perf/trace/beauty/include/linux/
 linux_uapi_dir := $(srctree)/tools/include/uapi/linux
 asm_generic_uapi_dir := $(srctree)/tools/include/uapi/asm-generic
@@ -450,15 +465,6 @@ drm_ioctl_tbl := $(srctree)/tools/perf/trace/beauty/drm_ioctl.sh
 # Create output directory if not already present
 _dummy := $(shell [ -d '$(beauty_ioctl_outdir)' ] || mkdir -p '$(beauty_ioctl_outdir)')
 
-arm64_gen_sysreg_dir := $(srctree)/tools/arch/arm64/tools
-
-arm64-sysreg-defs: FORCE
-	$(Q)$(MAKE) -C $(arm64_gen_sysreg_dir)
-
-arm64-sysreg-defs-clean:
-	$(call QUIET_CLEAN,arm64-sysreg-defs)
-	$(Q)$(MAKE) -C $(arm64_gen_sysreg_dir) clean > /dev/null
-
 $(drm_ioctl_array): $(drm_hdr_dir)/drm.h $(drm_hdr_dir)/i915_drm.h $(drm_ioctl_tbl)
 	$(Q)$(SHELL) '$(drm_ioctl_tbl)' $(drm_hdr_dir) > $@
 
diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index fb661c48992f..988473bf907a 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -347,7 +347,7 @@ CFLAGS_rbtree.o        += -Wno-unused-parameter -DETC_PERFCONFIG="BUILD_STR($(ET
 CFLAGS_libstring.o     += -Wno-unused-parameter -DETC_PERFCONFIG="BUILD_STR($(ETC_PERFCONFIG_SQ))"
 CFLAGS_hweight.o       += -Wno-unused-parameter -DETC_PERFCONFIG="BUILD_STR($(ETC_PERFCONFIG_SQ))"
 CFLAGS_header.o        += -include $(OUTPUT)PERF-VERSION-FILE
-CFLAGS_arm-spe.o       += -I$(srctree)/tools/arch/arm64/include/ -I$(srctree)/tools/arch/arm64/include/generated/
+CFLAGS_arm-spe.o       += -I$(srctree)/tools/arch/arm64/include/ -I$(OUTPUT)arch/arm64/include/generated/
 
 $(OUTPUT)util/argv_split.o: ../lib/argv_split.c FORCE
 	$(call rule_mkdir)
diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile
index a5963ab9215b..52c59bad7213 100644
--- a/tools/testing/selftests/kvm/Makefile
+++ b/tools/testing/selftests/kvm/Makefile
@@ -18,12 +18,13 @@ else
 endif
 
 ifeq ($(ARCH),arm64)
-arm64_tools_dir := $(top_srcdir)/tools/arch/arm64/tools/
+tools_dir := $(top_srcdir)/tools
+arm64_tools_dir := $(tools_dir)/arch/arm64/tools/
 GEN_HDRS := $(top_srcdir)/tools/arch/arm64/include/generated/
 CFLAGS += -I$(GEN_HDRS)
 
 $(GEN_HDRS): $(wildcard $(arm64_tools_dir)/*)
-	$(MAKE) -C $(arm64_tools_dir)
+	$(MAKE) -C $(arm64_tools_dir) O=$(tools_dir)
 endif
 
 LIBKVM += lib/assert.c