From 3f32c49ed6f15c8412a8abc93a92c4b37e6c4592 Mon Sep 17 00:00:00 2001 From: Kefeng Wang Date: Tue, 8 Aug 2023 11:33:59 +0800 Subject: 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 Acked-by: Mike Rapoport (IBM) Cc: Matthew Wilcox Cc: Tomas Mudrunka Signed-off-by: Andrew Morton --- mm/memtest.c | 22 ++++++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) (limited to 'mm/memtest.c') 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 #include #include +#include -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); +} -- cgit v1.2.3