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arch/tile: use proper memparse() for "maxmem" options

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This is more standard and avoids having to remember what units
the options actually take.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2012-03-29 15:56:18 -04:00
parent 719ea79e33
commit bfffe79bc2
1 changed files with 8 additions and 9 deletions
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17
arch/tile/kernel/setup.c
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@ -103,13 +103,11 @@ unsigned long __initdata pci_reserve_end_pfn = -1U;
static int __init setup_maxmem(char *str)
{
long maxmem_mb;
if (str == NULL || strict_strtol(str, 0, &maxmem_mb) != 0 ||
maxmem_mb == 0)
unsigned long long maxmem;
if (str == NULL || (maxmem = memparse(str, NULL)) == 0)
return -EINVAL;
maxmem_pfn = (maxmem_mb >> (HPAGE_SHIFT - 20)) <<
(HPAGE_SHIFT - PAGE_SHIFT);
maxmem_pfn = (maxmem >> HPAGE_SHIFT) << (HPAGE_SHIFT - PAGE_SHIFT);
pr_info("Forcing RAM used to no more than %dMB\n",
maxmem_pfn >> (20 - PAGE_SHIFT));
return 0;
@ -119,14 +117,15 @@ early_param("maxmem", setup_maxmem);
static int __init setup_maxnodemem(char *str)
{
char *endp;
long maxnodemem_mb, node;
unsigned long long maxnodemem;
long node;
node = str ? simple_strtoul(str, &endp, 0) : INT_MAX;
if (node >= MAX_NUMNODES || *endp != ':' ||
strict_strtol(endp+1, 0, &maxnodemem_mb) != 0)
if (node >= MAX_NUMNODES || *endp != ':')
return -EINVAL;
maxnodemem_pfn[node] = (maxnodemem_mb >> (HPAGE_SHIFT - 20)) <<
maxnodemem = memparse(endp+1, NULL);
maxnodemem_pfn[node] = (maxnodemem >> HPAGE_SHIFT) <<
(HPAGE_SHIFT - PAGE_SHIFT);
pr_info("Forcing RAM used on node %ld to no more than %dMB\n",
node, maxnodemem_pfn[node] >> (20 - PAGE_SHIFT));