diff options
| author | Robin Holt <holt@sgi.com> | 2006-04-13 15:34:45 -0700 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2006-04-13 15:34:45 -0700 |
| commit | ace1d816a13ff42d4f41989862552032f9c19853 (patch) | |
| tree | 084277670a76f9a50449e82b308ecc7b881fd5ac /mm | |
| parent | 356a5c1c6fdfb8eed6dbb3979d90c7cc7060017a (diff) | |
[IA64] Make show_mem() skip holes in a pgdat
This patch modifies ia64's show_mem() to walk the vmem_map page tables and
rapidly skip forward across regions where the page tables are missing.
This prevents the pfn_valid() check from causing numerous unnecessary
page faults.
Without this patch on a 512 node 512 cpu system where every node has four
memory holes, the show_mem() call takes 1 hour 18 minutes. With this
patch, it takes less than 3 seconds.
Signed-off-by: Robin Holt <holt@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions