[PATCH] proc: return exit code 4 for skipped tests

[Alexey Dobriyan <adobriyan@gmail.com>]

Test harness uses 4 for SKIP, not 2.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
---

 tools/testing/selftests/proc/proc-loadavg-001.c        |    2 +-
 tools/testing/selftests/proc/proc-self-map-files-002.c |    2 +-
 tools/testing/selftests/proc/proc-self-syscall.c       |    2 +-
 tools/testing/selftests/proc/proc-self-wchan.c         |    2 +-
 tools/testing/selftests/proc/read.c                    |    2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

--- a/tools/testing/selftests/proc/proc-loadavg-001.c
+++ b/tools/testing/selftests/proc/proc-loadavg-001.c
@@ -30,7 +30,7 @@ int main(void)
 
 	if (unshare(CLONE_NEWPID) == -1) {
 		if (errno == ENOSYS || errno == EPERM)
-			return 2;
+			return 4;
 		return 1;
 	}
 
--- a/tools/testing/selftests/proc/proc-self-map-files-002.c
+++ b/tools/testing/selftests/proc/proc-self-map-files-002.c
@@ -63,7 +63,7 @@ int main(void)
 	p = mmap((void *)va, PAGE_SIZE, PROT_NONE, MAP_PRIVATE|MAP_FILE|MAP_FIXED, fd, 0);
 	if (p == MAP_FAILED) {
 		if (errno == EPERM)
-			return 2;
+			return 4;
 		return 1;
 	}
 
--- a/tools/testing/selftests/proc/proc-self-syscall.c
+++ b/tools/testing/selftests/proc/proc-self-syscall.c
@@ -39,7 +39,7 @@ int main(void)
 	fd = open("/proc/self/syscall", O_RDONLY);
 	if (fd == -1) {
 		if (errno == ENOENT)
-			return 2;
+			return 4;
 		return 1;
 	}
 
--- a/tools/testing/selftests/proc/proc-self-wchan.c
+++ b/tools/testing/selftests/proc/proc-self-wchan.c
@@ -27,7 +27,7 @@ int main(void)
 	fd = open("/proc/self/wchan", O_RDONLY);
 	if (fd == -1) {
 		if (errno == ENOENT)
-			return 2;
+			return 4;
 		return 1;
 	}
 
--- a/tools/testing/selftests/proc/read.c
+++ b/tools/testing/selftests/proc/read.c
@@ -126,7 +126,7 @@ int main(void)
 
 	d = opendir("/proc");
 	if (!d)
-		return 2;
+		return 4;
 	f(d, 0);
 	return 0;
 }