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authorAravinda Prasad <aravinda@linux.vnet.ibm.com>2018-10-10 15:52:59 +0530
committerMichael Ellerman <mpe@ellerman.id.au>2018-10-26 21:58:58 +1100
commit772b039fd9a7e12d5fc80e6f649341934ad51fbe (patch)
treedc8eaa9e9bd22b1697a45ddd142ce222b67fa9c9 /arch/powerpc
parent709cf19c5749308603ffa12557d8bd152a926783 (diff)
powerpc/pseries: Export maximum memory value
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>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/platforms/pseries/lparcfg.c13
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/pseries/lparcfg.c b/arch/powerpc/platforms/pseries/lparcfg.c
index 8bd590af488a..794487313cc8 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);
+}
+
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;
}