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* [LTP] [PATCH] LTP max_map_count: filer out not accounted vector stub for arm
@ 2013-10-04 10:17 Maxim Uvarov
  2013-10-04 10:17 ` [LTP] [PATCH] LTP cacheflush01 add arm variant Maxim Uvarov
  2013-10-09  7:59 ` [LTP] [PATCH] LTP max_map_count: filer out not accounted vector stub for arm Jan Stancek
  0 siblings, 2 replies; 7+ messages in thread
From: Maxim Uvarov @ 2013-10-04 10:17 UTC (permalink / raw)
  To: ltp-list; +Cc: linaro-networking, Maxim Uvarov

Arm has following vector stab:
ffff0000-ffff1000 r-xp 00000000 00:00 0 [vectors]
which is not accounted in map_count.

Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.com>
---
 testcases/kernel/mem/tunable/max_map_count.c |   19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/testcases/kernel/mem/tunable/max_map_count.c b/testcases/kernel/mem/tunable/max_map_count.c
index 01fbe5e..ca28fba 100644
--- a/testcases/kernel/mem/tunable/max_map_count.c
+++ b/testcases/kernel/mem/tunable/max_map_count.c
@@ -121,12 +121,24 @@ void cleanup(void)
  * for in the vm_area_struct's map_count.
  */
 #if defined(__x86_64__) || defined(__x86__)
-static int filter_map(char *buf)
+static int filter_map(char *line)
 {
+	char buf[BUFSIZ];
+	int ret;
+
+	ret = sscanf(line, "%*p-%*p %*4s %*p %*2d:%*2d %*d %s", buf);
+	if (ret != 1)
+		return 0;
+
 	return strcmp(buf, "[vsyscall]") == 0;
 }
+#elif defined(__arm__)
+static int filter_map(char *line)
+{
+	return strncmp(line, "ffff0000-ffff1000", 17) == 0;
+}
 #else
-static int filter_map(char *buf)
+static int filter_map(char *line)
 {
 	return 0;
 }
@@ -146,8 +158,7 @@ static long count_maps(pid_t pid)
 		tst_brkm(TBROK | TERRNO, cleanup, "fopen %s", buf);
 	while (getline(&line, &len, fp) != -1) {
 		/* exclude vdso and vsyscall */
-		if (sscanf(line, "%*p-%*p %*4s %*p %*2d:%*2d %*d %s", buf) ==
-				1 && filter_map(buf))
+		if (filter_map(line))
 			continue;
 		map_count++;
 	}
-- 
1.7.9.5


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^ permalink raw reply related	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2013-10-21  7:50 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-10-04 10:17 [LTP] [PATCH] LTP max_map_count: filer out not accounted vector stub for arm Maxim Uvarov
2013-10-04 10:17 ` [LTP] [PATCH] LTP cacheflush01 add arm variant Maxim Uvarov
2013-10-09  7:55   ` Jan Stancek
2013-10-09  7:59 ` [LTP] [PATCH] LTP max_map_count: filer out not accounted vector stub for arm Jan Stancek
2013-10-09 10:33   ` Maxim Uvarov
2013-10-18 12:22     ` Maxim Uvarov
2013-10-21  7:50       ` Jan Stancek

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