From d4f12daf7ba4efc506c377a9591ecdb692641fe5 Mon Sep 17 00:00:00 2001 From: Hannes Hering Date: Thu, 16 Oct 2008 11:36:42 +0200 Subject: ehea: Fix memory hotplug support This patch implements the memory notifier to update the busmap instantly instead of rebuilding the whole map. This is necessary because walk_memory_resource provides different information than required during memory hotplug. Signed-off-by: Hannes Hering Signed-off-by: Jeff Garzik --- drivers/net/ehea/ehea_main.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) (limited to 'drivers/net/ehea/ehea_main.c') diff --git a/drivers/net/ehea/ehea_main.c b/drivers/net/ehea/ehea_main.c index b70c5314f537..422fcb93e2c3 100644 --- a/drivers/net/ehea/ehea_main.c +++ b/drivers/net/ehea/ehea_main.c @@ -2863,7 +2863,7 @@ static void ehea_rereg_mrs(struct work_struct *work) struct ehea_adapter *adapter; mutex_lock(&dlpar_mem_lock); - ehea_info("LPAR memory enlarged - re-initializing driver"); + ehea_info("LPAR memory changed - re-initializing driver"); list_for_each_entry(adapter, &adapter_list, list) if (adapter->active_ports) { @@ -2900,13 +2900,6 @@ static void ehea_rereg_mrs(struct work_struct *work) } } - ehea_destroy_busmap(); - ret = ehea_create_busmap(); - if (ret) { - ehea_error("creating ehea busmap failed"); - goto out; - } - clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags); list_for_each_entry(adapter, &adapter_list, list) @@ -3519,9 +3512,21 @@ void ehea_crash_handler(void) static int ehea_mem_notifier(struct notifier_block *nb, unsigned long action, void *data) { + struct memory_notify *arg = data; switch (action) { - case MEM_OFFLINE: - ehea_info("memory has been removed"); + case MEM_CANCEL_OFFLINE: + ehea_info("memory offlining canceled"); + /* Readd canceled memory block */ + case MEM_ONLINE: + ehea_info("memory is going online"); + if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages)) + return NOTIFY_BAD; + ehea_rereg_mrs(NULL); + break; + case MEM_GOING_OFFLINE: + ehea_info("memory is going offline"); + if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages)) + return NOTIFY_BAD; ehea_rereg_mrs(NULL); break; default: -- cgit v1.2.3-55-g7522