diff options
| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2016-05-19 17:13:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-19 19:12:14 -0700 |
| commit | 86dd995d63241039e0ad9123f9b424013c611510 (patch) | |
| tree | d3bee4d667fab9a57ff2a6d499fdb2916524ca05 /mm/memory_hotplug.c | |
| parent | 8604d9e534a3e662600e288bcfd1a5acd2763d28 (diff) | |
memory_hotplug: introduce memhp_default_state= command line parameter
CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE specifies the default value for the
memory hotplug onlining policy. Add a command line parameter to make it
possible to override the default. It may come handy for debug and
testing purposes.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: David Vrabel <david.vrabel@citrix.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Lennart Poettering <lennart@poettering.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memory_hotplug.c')
| -rw-r--r-- | mm/memory_hotplug.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index fcafbfcff044..caf2a14c37ad 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -85,6 +85,17 @@ bool memhp_auto_online = true; #endif EXPORT_SYMBOL_GPL(memhp_auto_online); +static int __init setup_memhp_default_state(char *str) +{ + if (!strcmp(str, "online")) + memhp_auto_online = true; + else if (!strcmp(str, "offline")) + memhp_auto_online = false; + + return 1; +} +__setup("memhp_default_state=", setup_memhp_default_state); + void get_online_mems(void) { might_sleep(); |