[PATCH 5.14 25/48] selftests: kvm: move get_run_delay() into lib/test_util

Greg Kroah-Hartman
2021-10-08T11:38:01Z

From: Shuah Khan <skhan@linuxfoundation.org>

[ Upstream commit 20175d5eac5bb94a7a3719ef275337fc9abf26ac ]

get_run_delay() is defined static in xen_shinfo_test and steal_time test.
Move it to lib and remove code duplication.

Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/kvm/include/test_util.h | 1 +
tools/testing/selftests/kvm/lib/test_util.c | 15 +++++++++++++++
tools/testing/selftests/kvm/steal_time.c | 15 ---------------
.../selftests/kvm/x86_64/xen_shinfo_test.c | 15 ---------------
4 files changed, 16 insertions(+), 30 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/test_util.h b/tools/testing/selftests/kvm/include/test_util.h
index d79be15dd3d2..c7409b9b4e5b 100644
--- a/tools/testing/selftests/kvm/include/test_util.h
+++ b/tools/testing/selftests/kvm/include/test_util.h
@@ -102,6 +102,7 @@ const struct vm_mem_backing_src_alias *vm_mem_backing_src_alias(uint32_t i);
size_t get_backing_src_pagesz(uint32_t i);
void backing_src_help(void);
enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name);
+long get_run_delay(void);

/*
* Whether or not the given source type is shared memory (as opposed to
diff --git a/tools/testing/selftests/kvm/lib/test_util.c b/tools/testing/selftests/kvm/lib/test_util.c
index 938cd423643e..f80dd38a38b2 100644
--- a/tools/testing/selftests/kvm/lib/test_util.c
+++ b/tools/testing/selftests/kvm/lib/test_util.c
@@ -11,6 +11,7 @@
#include <stdlib.h>
#include <time.h>
#include <sys/stat.h>
+#include <sys/syscall.h>
#include <linux/mman.h>
#include "linux/kernel.h"

@@ -303,3 +304,17 @@ enum vm_mem_backing_src_type parse_backing_src_type(const char *type_name)
TEST_FAIL("Unknown backing src type: %s", type_name);
return -1;
}
+
+long get_run_delay(void)
+{
+ char path[64];
+ long val[2];
+ FILE *fp;
+
+ sprintf(path, "/proc/%ld/schedstat", syscall(SYS_gettid));
+ fp = fopen(path, "r");
+ fscanf(fp, "%ld %ld ", &val[0], &val[1]);
+ fclose(fp);
+
+ return val[1];
+}
diff --git a/tools/testing/selftests/kvm/steal_time.c b/tools/testing/selftests/kvm/steal_time.c
index ecec30865a74..51fe95a5c36a 100644
--- a/tools/testing/selftests/kvm/steal_time.c
+++ b/tools/testing/selftests/kvm/steal_time.c
@@ -10,7 +10,6 @@
#include <sched.h>
#include <pthread.h>
#include <linux/kernel.h>
-#include <sys/syscall.h>
#include <asm/kvm.h>
#include <asm/kvm_para.h>

@@ -217,20 +216,6 @@ static void steal_time_dump(struct kvm_vm *vm, uint32_t vcpuid)

#endif

-static long get_run_delay(void)
-{
- char path[64];
- long val[2];
- FILE *fp;
-
- sprintf(path, "/proc/%ld/schedstat", syscall(SYS_gettid));
- fp = fopen(path, "r");
- fscanf(fp, "%ld %ld ", &val[0], &val[1]);
- fclose(fp);
-
- return val[1];
-}
-
static void *do_steal_time(void *arg)
{
struct timespec ts, stop;
diff --git a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
index 117bf49a3d79..eda0d2a51224 100644
--- a/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
+++ b/tools/testing/selftests/kvm/x86_64/xen_shinfo_test.c
@@ -14,7 +14,6 @@
#include <stdint.h>
#include <time.h>
#include <sched.h>
-#include <sys/syscall.h>

#define VCPU_ID 5

@@ -98,20 +97,6 @@ static void guest_code(void)
GUEST_DONE();
}

-static long get_run_delay(void)
-{
- char path[64];
- long val[2];
- FILE *fp;
-
- sprintf(path, "/proc/%ld/schedstat", syscall(SYS_gettid));
- fp = fopen(path, "r");
- fscanf(fp, "%ld %ld ", &val[0], &val[1]);
- fclose(fp);
-
- return val[1];
-}
-
static int cmp_timespec(struct timespec *a, struct timespec *b)
{
if (a->tv_sec > b->tv_sec)
--
2.33.0