linux-kernel - [PATCH v2 2/6] rtla: Add optional dependency on libcpupower

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Message-ID: <20240731083655.375293-3-tglozar@redhat.com>
Date: Wed, 31 Jul 2024 10:36:51 +0200
From: tglozar@...hat.com
To: rostedt@...dmis.org
Cc: linux-trace-kernel@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	jwyatt@...hat.com,
	jkacur@...hat.com,
	Tomas Glozar <tglozar@...hat.com>
Subject: [PATCH v2 2/6] rtla: Add optional dependency on libcpupower

From: Tomas Glozar <tglozar@...hat.com>

If libcpupower is present, set HAVE_LIBCPUPOWER_SUPPORT macro to allow
features depending on libcpupower in rtla.

Signed-off-by: Tomas Glozar <tglozar@...hat.com>
---
 tools/tracing/rtla/Makefile        |  2 ++
 tools/tracing/rtla/Makefile.config | 10 ++++++++++
 2 files changed, 12 insertions(+)

diff --git a/tools/tracing/rtla/Makefile b/tools/tracing/rtla/Makefile
index b5878be36125..a6a7dee16622 100644
--- a/tools/tracing/rtla/Makefile
+++ b/tools/tracing/rtla/Makefile
@@ -32,8 +32,10 @@ DOCSRC		:= ../../../Documentation/tools/rtla/
 
 FEATURE_TESTS	:= libtraceevent
 FEATURE_TESTS	+= libtracefs
+FEATURE_TESTS	+= libcpupower
 FEATURE_DISPLAY	:= libtraceevent
 FEATURE_DISPLAY	+= libtracefs
+FEATURE_DISPLAY	+= libcpupower
 
 ifeq ($(V),1)
   Q		=
diff --git a/tools/tracing/rtla/Makefile.config b/tools/tracing/rtla/Makefile.config
index 0b7ecfb30d19..5f6f537c9728 100644
--- a/tools/tracing/rtla/Makefile.config
+++ b/tools/tracing/rtla/Makefile.config
@@ -42,6 +42,16 @@ else
   $(info libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
 endif
 
+$(call feature_check,libcpupower)
+ifeq ($(feature-libcpupower), 1)
+  $(call detected,CONFIG_LIBCPUPOWER)
+  $(call lib_setup,cpupower)
+  CFLAGS += -DHAVE_LIBCPUPOWER_SUPPORT
+else
+  $(info libcpupower is missing, building without --deepest-idle-state support.)
+  $(info Please install libcpupower-dev/kernel-tools-libs-devel)
+endif
+
 ifeq ($(STOP_ERROR),1)
   $(error Please, check the errors above.)
 endif
-- 
2.45.2