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authorMichal Hocko <mhocko@suse.com>2017-02-22 15:46:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-22 16:41:30 -0800
commit9af744d743170b5f5ef70031dea8d772d166ab28 (patch)
tree87290ffc304288352c66bc9afda0d4214403862c /drivers/tty
parent6d23f8a5d432337aa2590ea8fd5eee8b0bc28eee (diff)
lib/show_mem.c: teach show_mem to work with the given nodemask
show_mem() allows to filter out node specific data which is irrelevant to the allocation request via SHOW_MEM_FILTER_NODES. The filtering is done in skip_free_areas_node which skips all nodes which are not in the mems_allowed of the current process. This works most of the time as expected because the nodemask shouldn't be outside of the allocating task but there are some exceptions. E.g. memory hotplug might want to request allocations from outside of the allowed nodes (see new_node_page). Get rid of this hardcoded behavior and push the allocation mask down the show_mem path and use it instead of cpuset_current_mems_allowed. NULL nodemask is interpreted as cpuset_current_mems_allowed. [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/20170117091543.25850-5-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Acked-by: Mel Gorman <mgorman@suse.de> Cc: Hillf Danton <hillf.zj@alibaba-inc.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Vlastimil Babka <vbabka@suse.cz> Cc: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/sysrq.c2
-rw-r--r--drivers/tty/vt/keyboard.c2
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/tty/sysrq.c b/drivers/tty/sysrq.c
index 701c085bb19b..71136742e606 100644
--- a/drivers/tty/sysrq.c
+++ b/drivers/tty/sysrq.c
@@ -317,7 +317,7 @@ static struct sysrq_key_op sysrq_ftrace_dump_op = {
static void sysrq_handle_showmem(int key)
{
- show_mem(0);
+ show_mem(0, NULL);
}
static struct sysrq_key_op sysrq_showmem_op = {
.handler = sysrq_handle_showmem,
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index 3dd6a491cdba..397e1509fe51 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -572,7 +572,7 @@ static void fn_scroll_back(struct vc_data *vc)
static void fn_show_mem(struct vc_data *vc)
{
- show_mem(0);
+ show_mem(0, NULL);
}
static void fn_show_state(struct vc_data *vc)