On 10/10/2018 05:22 AM, Aravinda Prasad wrote:
> This patch exports the maximum possible amount of memory
> configured on the system via /proc/powerpc/lparcfg.
>
> Signed-off-by: Aravinda Prasad <aravi...@linux.vnet.ibm.com>
> ---
> arch/powerpc/platforms/pseries/lparcfg.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/arch/powerpc/platforms/pseries/lparcfg.c
> b/arch/powerpc/platforms/pseries/lparcfg.c
> index 7c872dc..aa82f55 100644
> --- a/arch/powerpc/platforms/pseries/lparcfg.c
> +++ b/arch/powerpc/platforms/pseries/lparcfg.c
> @@ -26,6 +26,7 @@
> #include <linux/seq_file.h>
> #include <linux/slab.h>
> #include <linux/uaccess.h>
> +#include <linux/hugetlb.h>
> #include <asm/lppaca.h>
> #include <asm/hvcall.h>
> #include <asm/firmware.h>
> @@ -36,6 +37,7 @@
> #include <asm/vio.h>
> #include <asm/mmu.h>
> #include <asm/machdep.h>
> +#include <asm/drmem.h>
>
> #include "pseries.h"
>
> @@ -433,6 +435,16 @@ static void parse_em_data(struct seq_file *m)
> seq_printf(m, "power_mode_data=%016lx\n", retbuf[0]);
> }
>
> +static void maxmem_data(struct seq_file *m)
> +{
> + unsigned long maxmem = 0;
> +
> + maxmem += drmem_info->n_lmbs * drmem_info->lmb_size;
> + maxmem += hugetlb_total_pages() * PAGE_SIZE;
> +
> + seq_printf(m, "MaxMem=%ld\n", maxmem);
Should this be MaxPossibleMem?
At least for the drmem memory the value calculated is the maximum possible
memory. I wonder if calling it MaxMem would lead users to think they have
that much memory available to them.
-Nathan
> +}
> +
> static int pseries_lparcfg_data(struct seq_file *m, void *v)
> {
> int partition_potential_processors;
> @@ -491,6 +503,7 @@ static int pseries_lparcfg_data(struct seq_file *m, void
> *v)
> seq_printf(m, "slb_size=%d\n", mmu_slb_size);
> #endif
> parse_em_data(m);
> + maxmem_data(m);
>
> return 0;
> }
>
