perf tools: Expose quiet/verbose variables in Makefile.perf

The variables to make builds silent/verbose live inside
tools/build/Makefile.build. Move those variables to the top-level
Makefile.perf to be generally available.

Committer testing:

See the SYSCALL lines, now they are consistent with the other
operations in other lines:
  SYSTBL  /tmp/build/perf-tools-next/arch/x86/include/generated/asm/syscalls_32.h
  SYSTBL  /tmp/build/perf-tools-next/arch/x86/include/generated/asm/syscalls_64.h
  GEN     /tmp/build/perf-tools-next/common-cmds.h
  GEN     /tmp/build/perf-tools-next/arch/arm64/include/generated/asm/sysreg-defs.h
  PERF_VERSION = 6.13.rc2.g3d94bb6ed1d0
  GEN     perf-archive
  MKDIR   /tmp/build/perf-tools-next/jvmti/
  MKDIR   /tmp/build/perf-tools-next/jvmti/
  MKDIR   /tmp/build/perf-tools-next/jvmti/
  MKDIR   /tmp/build/perf-tools-next/jvmti/
  GEN     perf-iostat
  CC      /tmp/build/perf-tools-next/jvmti/libjvmti.o

Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: coresight@lists.linaro.org
Link: https://lore.kernel.org/r/20250114-perf_make_test-v1-1-decc1c517b11@rivosinc.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>

3 files changed, 37 insertions, 22 deletions

diff --git a/tools/build/Makefile.build b/tools/build/Makefile.build
index 5fb3fb3d97e0..e710ed67a1b4 100644
--- a/tools/build/Makefile.build
+++ b/tools/build/Makefile.build
@@ -12,26 +12,6 @@
 PHONY := __build
 __build:
 
-ifeq ($(V),1)
-  quiet =
-  Q =
-else
-  quiet=quiet_
-  Q=@
-endif
-
-# If the user is running make -s (silent mode), suppress echoing of commands
-# make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS.
-ifeq ($(filter 3.%,$(MAKE_VERSION)),)
-short-opts := $(firstword -$(MAKEFLAGS))
-else
-short-opts := $(filter-out --%,$(MAKEFLAGS))
-endif
-
-ifneq ($(findstring s,$(short-opts)),)
-  quiet=silent_
-endif
-
 build-dir := $(srctree)/tools/build
 
 # Define $(fixdep) for dep-cmd function
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index a449d0015536..55d6ce9ea52f 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -161,12 +161,47 @@ export VPATH
 SOURCE := $(shell ln -sf $(srctree)/tools/perf $(OUTPUT)/source)
 endif
 
+# Beautify output
+# ---------------------------------------------------------------------------
+#
+# Most of build commands in Kbuild start with "cmd_". You can optionally define
+# "quiet_cmd_*". If defined, the short log is printed. Otherwise, no log from
+# that command is printed by default.
+#
+# e.g.)
+#    quiet_cmd_depmod = DEPMOD  $(MODLIB)
+#          cmd_depmod = $(srctree)/scripts/depmod.sh $(DEPMOD) $(KERNELRELEASE)
+#
+# A simple variant is to prefix commands with $(Q) - that's useful
+# for commands that shall be hidden in non-verbose mode.
+#
+#    $(Q)$(MAKE) $(build)=scripts/basic
+#
+# To put more focus on warnings, be less verbose as default
+# Use 'make V=1' to see the full commands
+
 ifeq ($(V),1)
+  quiet =
   Q =
 else
-  Q = @
+  quiet=quiet_
+  Q=@
 endif
 
+# If the user is running make -s (silent mode), suppress echoing of commands
+# make-4.0 (and later) keep single letter options in the 1st word of MAKEFLAGS.
+ifeq ($(filter 3.%,$(MAKE_VERSION)),)
+short-opts := $(firstword -$(MAKEFLAGS))
+else
+short-opts := $(filter-out --%,$(MAKEFLAGS))
+endif
+
+ifneq ($(findstring s,$(short-opts)),)
+  quiet=silent_
+endif
+
+export quiet Q
+
 # Do not use make's built-in rules
 # (this improves performance and avoids hard-to-debug behaviour);
 MAKEFLAGS += -r
diff --git a/tools/perf/tests/shell/coresight/Makefile b/tools/perf/tests/shell/coresight/Makefile
index b070e779703e..fa08fd9a5991 100644
--- a/tools/perf/tests/shell/coresight/Makefile
+++ b/tools/perf/tests/shell/coresight/Makefile
@@ -24,6 +24,6 @@ CLEANDIRS = $(SUBDIRS:%=clean-%)
 
 clean: $(CLEANDIRS)
 $(CLEANDIRS):
-	$(call QUIET_CLEAN, test-$(@:clean-%=%)) $(Q)$(MAKE) -C $(@:clean-%=%) clean >/dev/null
+	$(call QUIET_CLEAN, test-$(@:clean-%=%)) $(MAKE) -C $(@:clean-%=%) clean >/dev/null
 
 .PHONY: all clean $(SUBDIRS) $(CLEANDIRS) $(INSTALLDIRS)