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Message-Id: <20240322120551.818764-1-dev.jain@arm.com>
Date: Fri, 22 Mar 2024 17:35:51 +0530
From: Dev Jain <dev.jain@....com>
To: akpm@...ux-foundation.org,
shuah@...nel.org
Cc: linux-mm@...ck.org,
linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org,
Anshuman.Khandual@....com,
Dev Jain <dev.jain@....com>
Subject: [PATCH] selftests/mm: Parse VMA range in one go
Use sscanf() to directly parse the VMA range. No functional change is intended.
Signed-off-by: Dev Jain <dev.jain@....com>
---
tools/testing/selftests/mm/mlock2-tests.c | 15 +--------------
1 file changed, 1 insertion(+), 14 deletions(-)
diff --git a/tools/testing/selftests/mm/mlock2-tests.c b/tools/testing/selftests/mm/mlock2-tests.c
index 26f744188ad0..7f0d50fa361d 100644
--- a/tools/testing/selftests/mm/mlock2-tests.c
+++ b/tools/testing/selftests/mm/mlock2-tests.c
@@ -20,8 +20,6 @@ static int get_vm_area(unsigned long addr, struct vm_boundaries *area)
FILE *file;
int ret = 1;
char line[1024] = {0};
- char *end_addr;
- char *stop;
unsigned long start;
unsigned long end;
@@ -37,21 +35,10 @@ static int get_vm_area(unsigned long addr, struct vm_boundaries *area)
memset(area, 0, sizeof(struct vm_boundaries));
while(fgets(line, 1024, file)) {
- end_addr = strchr(line, '-');
- if (!end_addr) {
+ if (sscanf(line, "%lx-%lx", &start, &end) != 2) {
ksft_print_msg("cannot parse /proc/self/maps\n");
goto out;
}
- *end_addr = '\0';
- end_addr++;
- stop = strchr(end_addr, ' ');
- if (!stop) {
- ksft_print_msg("cannot parse /proc/self/maps\n");
- goto out;
- }
-
- sscanf(line, "%lx", &start);
- sscanf(end_addr, "%lx", &end);
if (start <= addr && end > addr) {
area->start = start;
--
2.34.1
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