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authorKefeng Wang <wangkefeng.wang@huawei.com>2023-08-08 11:33:59 +0800
committerAndrew Morton <akpm@linux-foundation.org>2023-08-21 13:37:47 -0700
commit3f32c49ed6f15c8412a8abc93a92c4b37e6c4592 (patch)
tree0b36299811573eafb0382ee409612ff9e737da23 /mm/memtest.c
parentdaee07bfba3340b07edcf9ae92044398e8a964db (diff)
mm: memtest: convert to memtest_report_meminfo()
It is better to not expose too many internal variables of memtest, add a helper memtest_report_meminfo() to show memtest results. Link: https://lkml.kernel.org/r/20230808033359.174986-1-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> Cc: Matthew Wilcox <willy@infradead.org> Cc: Tomas Mudrunka <tomas.mudrunka@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'mm/memtest.c')
-rw-r--r--mm/memtest.c22
1 files changed, 20 insertions, 2 deletions
diff --git a/mm/memtest.c b/mm/memtest.c
index 57149dfee438..32f3e9dda837 100644
--- a/mm/memtest.c
+++ b/mm/memtest.c
@@ -3,9 +3,10 @@
#include <linux/types.h>
#include <linux/init.h>
#include <linux/memblock.h>
+#include <linux/seq_file.h>
-bool early_memtest_done;
-phys_addr_t early_memtest_bad_size;
+static bool early_memtest_done;
+static phys_addr_t early_memtest_bad_size;
static u64 patterns[] __initdata = {
/* The first entry has to be 0 to leave memtest with zeroed memory */
@@ -117,3 +118,20 @@ void __init early_memtest(phys_addr_t start, phys_addr_t end)
do_one_pass(patterns[idx], start, end);
}
}
+
+void memtest_report_meminfo(struct seq_file *m)
+{
+ unsigned long early_memtest_bad_size_kb;
+
+ if (!IS_ENABLED(CONFIG_PROC_FS))
+ return;
+
+ if (!early_memtest_done)
+ return;
+
+ early_memtest_bad_size_kb = early_memtest_bad_size >> 10;
+ if (early_memtest_bad_size && !early_memtest_bad_size_kb)
+ early_memtest_bad_size_kb = 1;
+ /* When 0 is reported, it means there actually was a successful test */
+ seq_printf(m, "EarlyMemtestBad: %5lu kB\n", early_memtest_bad_size_kb);
+}