diff mbox series

[v3,1/3] swapping01: skip test if zram-swap is being used

Message ID 1639374260-22887-1-git-send-email-xuyang2018.jy@fujitsu.com
State Changes Requested
Headers show
Series [v3,1/3] swapping01: skip test if zram-swap is being used | expand

Commit Message

Yang Xu \(Fujitsu\) Dec. 13, 2021, 5:44 a.m. UTC 
For the swapping test we attempt to allocate 130% of the available RAM and
we make sure that the overflow would fit the swap, but as long as swap is
backed by RAM this obviously false. So skip it if zram-swap is being used.

Fixes: #888
Reviewed-by: Cyril Hrubis <chrubis@suse.cz>
Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
---
 testcases/kernel/mem/swapping/swapping01.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/testcases/kernel/mem/swapping/swapping01.c b/testcases/kernel/mem/swapping/swapping01.c
index 392b79d65..925790186 100644
--- a/testcases/kernel/mem/swapping/swapping01.c
+++ b/testcases/kernel/mem/swapping/swapping01.c
@@ -40,10 +40,10 @@ 
 
 #include <sys/types.h>
 #include <sys/wait.h>
-#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>
+#include "tst_safe_stdio.h"
 #include "lapi/abisize.h"
 #include "mem.h"
 
@@ -67,6 +67,17 @@  static void test_swapping(void)
 #ifdef TST_ABI32
 	tst_brk(TCONF, "test is not designed for 32-bit system.");
 #endif
+	FILE *file;
+	char line[PATH_MAX];
+
+	file = SAFE_FOPEN("/proc/swaps", "r");
+	while (fgets(line, sizeof(line), file)) {
+		if (strstr(line, "/dev/zram")) {
+			SAFE_FCLOSE(file);
+			tst_brk(TCONF, "zram-swap is being used!");
+		}
+	}
+	SAFE_FCLOSE(file);
 
 	init_meminfo();