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Commit e017507f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux 

Pull s390 changes from Martin Schwidefsky:
 "No new functions, a few changes to make the code more robust, some
  cleanups and bug fixes."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (21 commits)
  s390/vtimer: rework virtual timer interface
  s390/dis: Add the servc instruction to the disassembler.
  s390/comments: unify copyright messages and remove file names
  s390/lgr: Add init check to lgr_info_log()
  s390/cpu init: use __get_cpu_var instead of per_cpu
  s390/idle: reduce size of s390_idle_data structure
  s390/idle: fix sequence handling vs cpu hotplug
  s390/ap: resend enable adapter interrupt request.
  s390/hypfs: Add missing get_next_ino()
  s390/dasd: add shutdown action
  s390/ipl: Fix ipib handling for "dumpreipl" shutdown action
  s390/smp: make absolute lowcore / cpu restart parameter accesses more robust
  s390/vmlogrdr: cleanup driver attribute usage
  s390/vmlogrdr: cleanup device attribute usage
  s390/ccwgroup: remove unused ccwgroup_device member
  s390/cio/chp: cleanup attribute usage
  s390/sigp: use sigp order code defines in assembly code
  s390/smp: use sigp cpu status definitions
  s390/smp/kvm: unifiy sigp definitions
  s390/smp: remove redundant check
  ...
parents 759e2a25 27f6b416

arch/s390/appldata/appldata.h

+0 −2
Original line number Diff line number Diff line 
/*

 * arch/s390/appldata/appldata.h

 *

 * Definitions and interface for Linux - z/VM Monitor Stream.

 *

 * Copyright IBM Corp. 2003, 2008

arch/s390/appldata/appldata_base.c

+14 −118
Original line number Diff line number Diff line 
/*

 * arch/s390/appldata/appldata_base.c

 *

 * Base infrastructure for Linux-z/VM Monitor Stream, Stage 1.

 * Exports appldata_register_ops() and appldata_unregister_ops() for the

 * data gathering modules.
@@ -29,7 +27,7 @@ 
#include <linux/suspend.h>

#include <linux/platform_device.h>

#include <asm/appldata.h>

#include <asm/timer.h>

#include <asm/vtimer.h>

#include <asm/uaccess.h>

#include <asm/io.h>

#include <asm/smp.h>
@@ -84,8 +82,7 @@ static struct ctl_table appldata_dir_table[] = { 
/*

 * Timer

 */

static DEFINE_PER_CPU(struct vtimer_list, appldata_timer);

static atomic_t appldata_expire_count = ATOMIC_INIT(0);

static struct vtimer_list appldata_timer;



static DEFINE_SPINLOCK(appldata_timer_lock);

static int appldata_interval = APPLDATA_CPU_INTERVAL;
@@ -115,11 +112,8 @@ static LIST_HEAD(appldata_ops_list); 
 */

static void appldata_timer_function(unsigned long data)

{

	if (atomic_dec_and_test(&appldata_expire_count)) {

		atomic_set(&appldata_expire_count, num_online_cpus());

	queue_work(appldata_wq, (struct work_struct *) data);

}

}



/*

 * appldata_work_fn()
@@ -131,7 +125,6 @@ static void appldata_work_fn(struct work_struct *work) 
	struct list_head *lh;

	struct appldata_ops *ops;



	get_online_cpus();

	mutex_lock(&appldata_ops_mutex);

	list_for_each(lh, &appldata_ops_list) {

		ops = list_entry(lh, struct appldata_ops, list);
@@ -140,7 +133,6 @@ static void appldata_work_fn(struct work_struct *work) 
		}

	}

	mutex_unlock(&appldata_ops_mutex);

	put_online_cpus();

}



/*
@@ -168,20 +160,6 @@ int appldata_diag(char record_nr, u16 function, unsigned long buffer, 


/****************************** /proc stuff **********************************/



/*

 * appldata_mod_vtimer_wrap()

 *

 * wrapper function for mod_virt_timer(), because smp_call_function_single()

 * accepts only one parameter.

 */

static void __appldata_mod_vtimer_wrap(void *p) {

	struct {

		struct vtimer_list *timer;

		u64    expires;

	} *args = p;

	mod_virt_timer_periodic(args->timer, args->expires);

}



#define APPLDATA_ADD_TIMER	0

#define APPLDATA_DEL_TIMER	1

#define APPLDATA_MOD_TIMER	2
@@ -192,49 +170,28 @@ static void __appldata_mod_vtimer_wrap(void *p) { 
 * Add, delete or modify virtual timers on all online cpus.

 * The caller needs to get the appldata_timer_lock spinlock.

 */

static void

__appldata_vtimer_setup(int cmd)

static void __appldata_vtimer_setup(int cmd)

{

	u64 per_cpu_interval;

	int i;

	u64 timer_interval = (u64) appldata_interval * 1000 * TOD_MICRO;



	switch (cmd) {

	case APPLDATA_ADD_TIMER:

		if (appldata_timer_active)

			break;

		per_cpu_interval = (u64) (appldata_interval*1000 /

					  num_online_cpus()) * TOD_MICRO;

		for_each_online_cpu(i) {

			per_cpu(appldata_timer, i).expires = per_cpu_interval;

			smp_call_function_single(i, add_virt_timer_periodic,

						 &per_cpu(appldata_timer, i),

						 1);

		}

		appldata_timer.expires = timer_interval;

		add_virt_timer_periodic(&appldata_timer);

		appldata_timer_active = 1;

		break;

	case APPLDATA_DEL_TIMER:

		for_each_online_cpu(i)

			del_virt_timer(&per_cpu(appldata_timer, i));

		del_virt_timer(&appldata_timer);

		if (!appldata_timer_active)

			break;

		appldata_timer_active = 0;

		atomic_set(&appldata_expire_count, num_online_cpus());

		break;

	case APPLDATA_MOD_TIMER:

		per_cpu_interval = (u64) (appldata_interval*1000 /

					  num_online_cpus()) * TOD_MICRO;

		if (!appldata_timer_active)

			break;

		for_each_online_cpu(i) {

			struct {

				struct vtimer_list *timer;

				u64    expires;

			} args;

			args.timer = &per_cpu(appldata_timer, i);

			args.expires = per_cpu_interval;

			smp_call_function_single(i, __appldata_mod_vtimer_wrap,

						 &args, 1);

		}

		mod_virt_timer_periodic(&appldata_timer, timer_interval);

	}

}
@@ -265,14 +222,12 @@ appldata_timer_handler(ctl_table *ctl, int write, 
	len = *lenp;

	if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len))

		return -EFAULT;

	get_online_cpus();

	spin_lock(&appldata_timer_lock);

	if (buf[0] == '1')

		__appldata_vtimer_setup(APPLDATA_ADD_TIMER);

	else if (buf[0] == '0')

		__appldata_vtimer_setup(APPLDATA_DEL_TIMER);

	spin_unlock(&appldata_timer_lock);

	put_online_cpus();

out:

	*lenp = len;

	*ppos += len;
@@ -305,20 +260,17 @@ appldata_interval_handler(ctl_table *ctl, int write, 
		goto out;

	}

	len = *lenp;

	if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len)) {

	if (copy_from_user(buf, buffer, len > sizeof(buf) ? sizeof(buf) : len))

		return -EFAULT;

	}

	interval = 0;

	sscanf(buf, "%i", &interval);

	if (interval <= 0)

		return -EINVAL;



	get_online_cpus();

	spin_lock(&appldata_timer_lock);

	appldata_interval = interval;

	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);

	spin_unlock(&appldata_timer_lock);

	put_online_cpus();

out:

	*lenp = len;

	*ppos += len;
@@ -485,14 +437,12 @@ static int appldata_freeze(struct device *dev) 
	int rc;

	struct list_head *lh;



	get_online_cpus();

	spin_lock(&appldata_timer_lock);

	if (appldata_timer_active) {

		__appldata_vtimer_setup(APPLDATA_DEL_TIMER);

		appldata_timer_suspended = 1;

	}

	spin_unlock(&appldata_timer_lock);

	put_online_cpus();



	mutex_lock(&appldata_ops_mutex);

	list_for_each(lh, &appldata_ops_list) {
@@ -516,14 +466,12 @@ static int appldata_restore(struct device *dev) 
	int rc;

	struct list_head *lh;



	get_online_cpus();

	spin_lock(&appldata_timer_lock);

	if (appldata_timer_suspended) {

		__appldata_vtimer_setup(APPLDATA_ADD_TIMER);

		appldata_timer_suspended = 0;

	}

	spin_unlock(&appldata_timer_lock);

	put_online_cpus();



	mutex_lock(&appldata_ops_mutex);

	list_for_each(lh, &appldata_ops_list) {
@@ -567,53 +515,6 @@ static struct platform_driver appldata_pdrv = { 


/******************************* init / exit *********************************/



static void __cpuinit appldata_online_cpu(int cpu)

{

	init_virt_timer(&per_cpu(appldata_timer, cpu));

	per_cpu(appldata_timer, cpu).function = appldata_timer_function;

	per_cpu(appldata_timer, cpu).data = (unsigned long)

		&appldata_work;

	atomic_inc(&appldata_expire_count);

	spin_lock(&appldata_timer_lock);

	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);

	spin_unlock(&appldata_timer_lock);

}



static void __cpuinit appldata_offline_cpu(int cpu)

{

	del_virt_timer(&per_cpu(appldata_timer, cpu));

	if (atomic_dec_and_test(&appldata_expire_count)) {

		atomic_set(&appldata_expire_count, num_online_cpus());

		queue_work(appldata_wq, &appldata_work);

	}

	spin_lock(&appldata_timer_lock);

	__appldata_vtimer_setup(APPLDATA_MOD_TIMER);

	spin_unlock(&appldata_timer_lock);

}



static int __cpuinit appldata_cpu_notify(struct notifier_block *self,

					 unsigned long action,

					 void *hcpu)

{

	switch (action) {

	case CPU_ONLINE:

	case CPU_ONLINE_FROZEN:

		appldata_online_cpu((long) hcpu);

		break;

	case CPU_DEAD:

	case CPU_DEAD_FROZEN:

		appldata_offline_cpu((long) hcpu);

		break;

	default:

		break;

	}

	return NOTIFY_OK;

}



static struct notifier_block __cpuinitdata appldata_nb = {

	.notifier_call = appldata_cpu_notify,

};



/*

 * appldata_init()

 *
@@ -621,7 +522,10 @@ static struct notifier_block __cpuinitdata appldata_nb = { 
 */

static int __init appldata_init(void)

{

	int i, rc;

	int rc;



	appldata_timer.function = appldata_timer_function;

	appldata_timer.data = (unsigned long) &appldata_work;



	rc = platform_driver_register(&appldata_pdrv);

	if (rc)
@@ -639,14 +543,6 @@ static int __init appldata_init(void) 
		goto out_device;

	}



	get_online_cpus();

	for_each_online_cpu(i)

		appldata_online_cpu(i);

	put_online_cpus();



	/* Register cpu hotplug notifier */

	register_hotcpu_notifier(&appldata_nb);



	appldata_sysctl_header = register_sysctl_table(appldata_dir_table);

	return 0;

arch/s390/appldata/appldata_mem.c

+1 −3
Original line number Diff line number Diff line 
/*

 * arch/s390/appldata/appldata_mem.c

 *

 * Data gathering module for Linux-VM Monitor Stream, Stage 1.

 * Collects data related to memory management.

 *

 * Copyright (C) 2003,2006 IBM Corporation, IBM Deutschland Entwicklung GmbH.

 * Copyright IBM Corp. 2003, 2006

 *

 * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>

 */

arch/s390/appldata/appldata_net_sum.c

+1 −3
Original line number Diff line number Diff line 
/*

 * arch/s390/appldata/appldata_net_sum.c

 *

 * Data gathering module for Linux-VM Monitor Stream, Stage 1.

 * Collects accumulated network statistics (Packets received/transmitted,

 * dropped, errors, ...).

 *

 * Copyright (C) 2003,2006 IBM Corporation, IBM Deutschland Entwicklung GmbH.

 * Copyright IBM Corp. 2003, 2006

 *

 * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>

 */

arch/s390/appldata/appldata_os.c

+1 −3
Original line number Diff line number Diff line 
/*

 * arch/s390/appldata/appldata_os.c

 *

 * Data gathering module for Linux-VM Monitor Stream, Stage 1.

 * Collects misc. OS related data (CPU utilization, running processes).

 *

 * Copyright (C) 2003,2006 IBM Corporation, IBM Deutschland Entwicklung GmbH.

 * Copyright IBM Corp. 2003, 2006

 *

 * Author: Gerald Schaefer <gerald.schaefer@de.ibm.com>

 */