| Message ID | 20230808033359.174986-1-wangkefeng.wang@huawei.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] mm: memtest: convert to memtest_report_meminfo() | expand |
On Tue, Aug 08, 2023 at 11:33:59AM +0800, Kefeng Wang wrote: > It is better to not expose too many internal variables of memtest, > add a helper memtest_report_meminfo() to show memtest results. > > Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Acked-by: Mike Rapoport (IBM) <rppt@kernel.org> > --- > v2: add CONFIG_PROC_FS check, per Matthew > > fs/proc/meminfo.c | 12 +----------- > include/linux/memblock.h | 10 ++++------ > mm/memtest.c | 22 ++++++++++++++++++++-- > 3 files changed, 25 insertions(+), 19 deletions(-) > > diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c > index 74e3c3815696..45af9a989d40 100644 > --- a/fs/proc/meminfo.c > +++ b/fs/proc/meminfo.c > @@ -133,17 +133,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) > show_val_kb(m, "VmallocChunk: ", 0ul); > show_val_kb(m, "Percpu: ", pcpu_nr_pages()); > > -#ifdef CONFIG_MEMTEST > - if (early_memtest_done) { > - unsigned long early_memtest_bad_size_kb; > - > - 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); > - } > -#endif > + memtest_report_meminfo(m); > > #ifdef CONFIG_MEMORY_FAILURE > seq_printf(m, "HardwareCorrupted: %5lu kB\n", > diff --git a/include/linux/memblock.h b/include/linux/memblock.h > index 0d031fbfea25..1c1072e3ca06 100644 > --- a/include/linux/memblock.h > +++ b/include/linux/memblock.h > @@ -594,13 +594,11 @@ extern int hashdist; /* Distribute hashes across NUMA nodes? */ > #endif > > #ifdef CONFIG_MEMTEST > -extern phys_addr_t early_memtest_bad_size; /* Size of faulty ram found by memtest */ > -extern bool early_memtest_done; /* Was early memtest done? */ > -extern void early_memtest(phys_addr_t start, phys_addr_t end); > +void early_memtest(phys_addr_t start, phys_addr_t end); > +void memtest_report_meminfo(struct seq_file *m); > #else > -static inline void early_memtest(phys_addr_t start, phys_addr_t end) > -{ > -} > +static inline void early_memtest(phys_addr_t start, phys_addr_t end) { } > +static inline void memtest_report_meminfo(struct seq_file *m) { } > #endif > > > 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); > +} > -- > 2.41.0 >
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c index 74e3c3815696..45af9a989d40 100644 --- a/fs/proc/meminfo.c +++ b/fs/proc/meminfo.c @@ -133,17 +133,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) show_val_kb(m, "VmallocChunk: ", 0ul); show_val_kb(m, "Percpu: ", pcpu_nr_pages()); -#ifdef CONFIG_MEMTEST - if (early_memtest_done) { - unsigned long early_memtest_bad_size_kb; - - 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); - } -#endif + memtest_report_meminfo(m); #ifdef CONFIG_MEMORY_FAILURE seq_printf(m, "HardwareCorrupted: %5lu kB\n", diff --git a/include/linux/memblock.h b/include/linux/memblock.h index 0d031fbfea25..1c1072e3ca06 100644 --- a/include/linux/memblock.h +++ b/include/linux/memblock.h @@ -594,13 +594,11 @@ extern int hashdist; /* Distribute hashes across NUMA nodes? */ #endif #ifdef CONFIG_MEMTEST -extern phys_addr_t early_memtest_bad_size; /* Size of faulty ram found by memtest */ -extern bool early_memtest_done; /* Was early memtest done? */ -extern void early_memtest(phys_addr_t start, phys_addr_t end); +void early_memtest(phys_addr_t start, phys_addr_t end); +void memtest_report_meminfo(struct seq_file *m); #else -static inline void early_memtest(phys_addr_t start, phys_addr_t end) -{ -} +static inline void early_memtest(phys_addr_t start, phys_addr_t end) { } +static inline void memtest_report_meminfo(struct seq_file *m) { } #endif 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); +}
It is better to not expose too many internal variables of memtest, add a helper memtest_report_meminfo() to show memtest results. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> --- v2: add CONFIG_PROC_FS check, per Matthew fs/proc/meminfo.c | 12 +----------- include/linux/memblock.h | 10 ++++------ mm/memtest.c | 22 ++++++++++++++++++++-- 3 files changed, 25 insertions(+), 19 deletions(-)