[PATCH 2/4] selftests/proc: expand smaps field coverage and require TMPFS

[deepakraog]

Gate the test on CONFIG_TMPFS in the selftest config file. Assert
Private_Clean, Private_Dirty, Swap, and SwapPss fields are present in
/proc/$PID/smaps output for the mapped executable page.

Signed-off-by: deepakraog <gaikwad.dcg@xxxxxxxxx>
---
 tools/testing/selftests/proc/config        | 1 +
 tools/testing/selftests/proc/proc-pid-vm.c | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/proc/config b/tools/testing/selftests/proc/config
index 68fbd2b35..7dfc3d381 100644
--- a/tools/testing/selftests/proc/config
+++ b/tools/testing/selftests/proc/config
@@ -1 +1,2 @@
 CONFIG_PROC_FS=y
+CONFIG_TMPFS=y
diff --git a/tools/testing/selftests/proc/proc-pid-vm.c b/tools/testing/selftests/proc/proc-pid-vm.c
index 4e6a3e53f..59535bb3a 100644
--- a/tools/testing/selftests/proc/proc-pid-vm.c
+++ b/tools/testing/selftests/proc/proc-pid-vm.c
@@ -20,7 +20,6 @@
  * Test /proc/$PID/smaps_rollup
  * Test /proc/$PID/statm
  *
- * FIXME require CONFIG_TMPFS which can be disabled
  * FIXME test other values from "smaps"
  * FIXME support other archs
  */
@@ -409,6 +408,10 @@ int main(void)
 			"AnonHugePages:         0 kB\n",
 			"Shared_Hugetlb:        0 kB\n",
 			"Private_Hugetlb:       0 kB\n",
+			"Private_Clean:         4 kB\n",
+			"Private_Dirty:         0 kB\n",
+			"Swap:                  0 kB\n",
+			"SwapPss:               0 kB\n",
 			"Locked:                0 kB\n",
 		};
 		int i;
-- 
Deepak Rao Gaikwad