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powerpc/pseries: Export maximum memory value

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This patch exports the maximum possible amount of memory
configured on the system via /proc/powerpc/lparcfg.

Signed-off-by: Aravinda Prasad <aravinda@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Aravinda Prasad 2018-10-10 15:52:59 +05:30 committed by Michael Ellerman
parent 709cf19c57
commit 772b039fd9
1 changed files with 13 additions and 0 deletions
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13
arch/powerpc/platforms/pseries/lparcfg.c
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@ -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);
}
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;
}