From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/s390/char/sclp_config.c | 77 ++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 kernel/drivers/s390/char/sclp_config.c (limited to 'kernel/drivers/s390/char/sclp_config.c') diff --git a/kernel/drivers/s390/char/sclp_config.c b/kernel/drivers/s390/char/sclp_config.c new file mode 100644 index 000000000..944156207 --- /dev/null +++ b/kernel/drivers/s390/char/sclp_config.c @@ -0,0 +1,77 @@ +/* + * Copyright IBM Corp. 2007 + * Author(s): Heiko Carstens + */ + +#define KMSG_COMPONENT "sclp_config" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + +#include +#include +#include +#include +#include +#include + +#include "sclp.h" + +struct conf_mgm_data { + u8 reserved; + u8 ev_qualifier; +} __attribute__((packed)); + +#define EV_QUAL_CPU_CHANGE 1 +#define EV_QUAL_CAP_CHANGE 3 + +static struct work_struct sclp_cpu_capability_work; +static struct work_struct sclp_cpu_change_work; + +static void sclp_cpu_capability_notify(struct work_struct *work) +{ + int cpu; + struct device *dev; + + s390_adjust_jiffies(); + pr_info("CPU capability may have changed\n"); + get_online_cpus(); + for_each_online_cpu(cpu) { + dev = get_cpu_device(cpu); + kobject_uevent(&dev->kobj, KOBJ_CHANGE); + } + put_online_cpus(); +} + +static void __ref sclp_cpu_change_notify(struct work_struct *work) +{ + smp_rescan_cpus(); +} + +static void sclp_conf_receiver_fn(struct evbuf_header *evbuf) +{ + struct conf_mgm_data *cdata; + + cdata = (struct conf_mgm_data *)(evbuf + 1); + switch (cdata->ev_qualifier) { + case EV_QUAL_CPU_CHANGE: + schedule_work(&sclp_cpu_change_work); + break; + case EV_QUAL_CAP_CHANGE: + schedule_work(&sclp_cpu_capability_work); + break; + } +} + +static struct sclp_register sclp_conf_register = +{ + .receive_mask = EVTYP_CONFMGMDATA_MASK, + .receiver_fn = sclp_conf_receiver_fn, +}; + +static int __init sclp_conf_init(void) +{ + INIT_WORK(&sclp_cpu_capability_work, sclp_cpu_capability_notify); + INIT_WORK(&sclp_cpu_change_work, sclp_cpu_change_notify); + return sclp_register(&sclp_conf_register); +} + +__initcall(sclp_conf_init); -- cgit 1.2.3-korg