linux-kernel - [PATCH v6 4/6] selftests/resctrl: Make resctrl

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Date:   Fri, 18 Mar 2022 16:58:05 +0900
From:   Shaopeng Tan <tan.shaopeng@...fujitsu.com>
To:     Fenghua Yu <fenghua.yu@...el.com>,
        Reinette Chatre <reinette.chatre@...el.com>,
        Shuah Khan <shuah@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        tan.shaopeng@...fujitsu.com
Subject: [PATCH v6 4/6] selftests/resctrl: Make resctrl_tests run using kselftest framework

In kselftest framework, all tests can be build/run at a time,
and a sub test also can be build/run individually. As follows:
$ make kselftest-all TARGETS=resctrl
$ make -C tools/testing/selftests run_tests
$ make -C tools/testing/selftests TARGETS=resctrl run_tests

However, resctrl_tests cannot be run using kselftest framework,
users have to change directory to tools/testing/selftests/resctrl/,
run "make" to build executable file "resctrl_tests",
and run "sudo ./resctrl_tests" to execute the test.

To build/run resctrl_tests using kselftest framework.
Modify tools/testing/selftests/Makefile
and tools/testing/selftests/resctrl/Makefile.

Even after this change, users can still build/run resctrl_tests
without using framework as before.

Signed-off-by: Shaopeng Tan <tan.shaopeng@...fujitsu.com>
---
 tools/testing/selftests/Makefile         |  1 +
 tools/testing/selftests/resctrl/Makefile | 17 ++++-------------
 2 files changed, 5 insertions(+), 13 deletions(-)

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index d08fe4cfe811..6138354b3760 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -52,6 +52,7 @@ TARGETS += proc
 TARGETS += pstore
 TARGETS += ptrace
 TARGETS += openat2
+TARGETS += resctrl
 TARGETS += rlimits
 TARGETS += rseq
 TARGETS += rtc
diff --git a/tools/testing/selftests/resctrl/Makefile b/tools/testing/selftests/resctrl/Makefile
index 6bcee2ec91a9..bee5fa8f1ac9 100644
--- a/tools/testing/selftests/resctrl/Makefile
+++ b/tools/testing/selftests/resctrl/Makefile
@@ -1,17 +1,8 @@
-CC = $(CROSS_COMPILE)gcc
 CFLAGS = -g -Wall -O2 -D_FORTIFY_SOURCE=2
-SRCS=$(wildcard *.c)
-OBJS=$(SRCS:.c=.o)
+CFLAGS += $(KHDR_INCLUDES)

-all: resctrl_tests
+TEST_GEN_PROGS := resctrl_tests

-$(OBJS): $(SRCS)
-	$(CC) $(CFLAGS) -c $(SRCS)
+include ../lib.mk

-resctrl_tests: $(OBJS)
-	$(CC) $(CFLAGS) -o $@ $^
-
-.PHONY: clean
-
-clean:
-	$(RM) $(OBJS) resctrl_tests
+$(OUTPUT)/resctrl_tests: $(wildcard *.c)
-- 
2.27.0