renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-24 13:13:57 +08:00
Code

sgi-xp: isolate additional sn2 specific code

Browse Source 
Move additional sn2 specific code into xpc_sn2.c.

Signed-off-by: Dean Nelson <dcn@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dean Nelson 2008-07-29 22:34:09 -07:00 committed by Linus Torvalds
parent 6e41017aad
commit a47d5dac9d
6 changed files with 788 additions and 810 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

169
drivers/misc/sgi-xp/xpc.h
View File

@ -122,9 +122,6 @@ struct xpc_rsvd_page {
#define XPC_RP_VERSION _XPC_VERSION(2, 0) /* version 2.0 of the reserved page */
#define XPC_SUPPORTS_RP_STAMP(_version) \
(_version >= _XPC_VERSION(1, 1))
/*
* Define the structures by which XPC variables can be exported to other
* partitions. (There are two: struct xpc_vars and struct xpc_vars_part)
@ -144,8 +141,8 @@ struct xpc_vars_sn2 {
u64 heartbeat;
DECLARE_BITMAP(heartbeating_to_mask, XP_MAX_NPARTITIONS_SN2);
u64 heartbeat_offline; /* if 0, heartbeat should be changing */
int act_nasid;
int act_phys_cpuid;
int activate_IRQ_nasid;
int activate_IRQ_phys_cpuid;
u64 vars_part_pa;
u64 amos_page_pa; /* paddr of page of AMOs from MSPEC driver */
AMO_t *amos_page; /* vaddr of page of AMOs from MSPEC driver */
@ -153,9 +150,6 @@ struct xpc_vars_sn2 {
#define XPC_V_VERSION _XPC_VERSION(3, 1) /* version 3.1 of the cross vars */
#define XPC_SUPPORTS_DISENGAGE_REQUEST(_version) \
(_version >= _XPC_VERSION(3, 1))
/*
* The following pertains to ia64-sn2 only.
*
@ -167,14 +161,14 @@ struct xpc_vars_sn2 {
* a PI FSB Protocol error to be generated by the SHUB. For XPC, we need 64
* AMO variables (based on XP_MAX_NPARTITIONS_SN2) to identify the senders of
* NOTIFY IRQs, 128 AMO variables (based on XP_NASID_MASK_WORDS) to identify
* the senders of ACTIVATE IRQs, and 2 AMO variables to identify which remote
* the senders of ACTIVATE IRQs, 1 AMO variable to identify which remote
* partitions (i.e., XPCs) consider themselves currently engaged with the
* local XPC.
* local XPC and 1 AMO variable to request partition deactivation.
*/
#define XPC_NOTIFY_IRQ_AMOS 0
#define XPC_ACTIVATE_IRQ_AMOS (XPC_NOTIFY_IRQ_AMOS + XP_MAX_NPARTITIONS_SN2)
#define XPC_ENGAGED_PARTITIONS_AMO (XPC_ACTIVATE_IRQ_AMOS + XP_NASID_MASK_WORDS)
#define XPC_DISENGAGE_REQUEST_AMO (XPC_ENGAGED_PARTITIONS_AMO + 1)
#define XPC_DEACTIVATE_REQUEST_AMO (XPC_ENGAGED_PARTITIONS_AMO + 1)
/*
* The following structure describes the per partition specific variables.
@ -369,6 +363,23 @@ struct xpc_notify {
* new messages, by the clearing of the message flags of the acknowledged
* messages.
*/
struct xpc_channel_sn2 {
/* various flavors of local and remote Get/Put values */
struct xpc_gp *local_GP; /* local Get/Put values */
struct xpc_gp remote_GP; /* remote Get/Put values */
struct xpc_gp w_local_GP; /* working local Get/Put values */
struct xpc_gp w_remote_GP; /* working remote Get/Put values */
s64 next_msg_to_pull; /* Put value of next msg to pull */
struct mutex msg_to_pull_mutex; /* next msg to pull serialization */
};
struct xpc_channel_uv {
/* >>> code is coming */
};
struct xpc_channel {
short partid; /* ID of remote partition connected */
spinlock_t lock; /* lock for updating this structure */
@ -407,20 +418,11 @@ struct xpc_channel {
xpc_channel_func func; /* user's channel function */
void *key; /* pointer to user's key */
struct mutex msg_to_pull_mutex; /* next msg to pull serialization */
struct completion wdisconnect_wait; /* wait for channel disconnect */
struct xpc_openclose_args *local_openclose_args; /* args passed on */
/* opening or closing of channel */
/* various flavors of local and remote Get/Put values */
struct xpc_gp *local_GP; /* local Get/Put values */
struct xpc_gp remote_GP; /* remote Get/Put values */
struct xpc_gp w_local_GP; /* working local Get/Put values */
struct xpc_gp w_remote_GP; /* working remote Get/Put values */
s64 next_msg_to_pull; /* Put value of next msg to pull */
/* kthread management related fields */
atomic_t kthreads_assigned; /* #of kthreads assigned to channel */
@ -431,6 +433,11 @@ struct xpc_channel {
wait_queue_head_t idle_wq; /* idle kthread wait queue */
union {
struct xpc_channel_sn2 sn2;
struct xpc_channel_uv uv;
} sn;
} ____cacheline_aligned;
/* struct xpc_channel flags */
@ -467,6 +474,40 @@ struct xpc_channel {
* for each partition (a partition will never utilize the structure that
* represents itself).
*/
struct xpc_partition_sn2 {
u64 remote_amos_page_pa; /* phys addr of partition's amos page */
int activate_IRQ_nasid; /* active partition's act/deact nasid */
int activate_IRQ_phys_cpuid; /* active part's act/deact phys cpuid */
u64 remote_vars_pa; /* phys addr of partition's vars */
u64 remote_vars_part_pa; /* phys addr of partition's vars part */
u8 remote_vars_version; /* version# of partition's vars */
void *local_GPs_base; /* base address of kmalloc'd space */
struct xpc_gp *local_GPs; /* local Get/Put values */
void *remote_GPs_base; /* base address of kmalloc'd space */
struct xpc_gp *remote_GPs; /* copy of remote partition's local */
/* Get/Put values */
u64 remote_GPs_pa; /* phys address of remote partition's local */
/* Get/Put values */
u64 remote_openclose_args_pa; /* phys addr of remote's args */
int remote_IPI_nasid; /* nasid of where to send IPIs */
int remote_IPI_phys_cpuid; /* phys CPU ID of where to send IPIs */
char IPI_owner[8]; /* IPI owner's name */
AMO_t *remote_IPI_amo_va; /* address of remote IPI AMO_t structure */
AMO_t *local_IPI_amo_va; /* address of IPI AMO_t structure */
struct timer_list dropped_notify_IRQ_timer; /* dropped IRQ timer */
};
struct xpc_partition_uv {
/* >>> code is coming */
};
struct xpc_partition {
/* XPC HB infrastructure */
@ -474,22 +515,15 @@ struct xpc_partition {
u8 remote_rp_version; /* version# of partition's rsvd pg */
unsigned long remote_rp_stamp; /* time when rsvd pg was initialized */
u64 remote_rp_pa; /* phys addr of partition's rsvd pg */
u64 remote_vars_pa; /* phys addr of partition's vars */
u64 remote_vars_part_pa; /* phys addr of partition's vars part */
u64 last_heartbeat; /* HB at last read */
u64 remote_amos_page_pa; /* phys addr of partition's amos page */
int remote_act_nasid; /* active part's act/deact nasid */
int remote_act_phys_cpuid; /* active part's act/deact phys cpuid */
u32 activate_IRQ_rcvd; /* IRQs since activation */
spinlock_t act_lock; /* protect updating of act_state */
u8 act_state; /* from XPC HB viewpoint */
u8 remote_vars_version; /* version# of partition's vars */
enum xp_retval reason; /* reason partition is deactivating */
int reason_line; /* line# deactivation initiated from */
int reactivate_nasid; /* nasid in partition to reactivate */
unsigned long disengage_request_timeout; /* timeout in jiffies */
struct timer_list disengage_request_timer;
unsigned long disengage_timeout; /* timeout in jiffies */
struct timer_list disengage_timer;
/* XPC infrastructure referencing and teardown control */
@ -502,14 +536,6 @@ struct xpc_partition {
atomic_t nchannels_engaged; /* #of channels engaged with remote part */
struct xpc_channel *channels; /* array of channel structures */
void *local_GPs_base; /* base address of kmalloc'd space */
struct xpc_gp *local_GPs; /* local Get/Put values */
void *remote_GPs_base; /* base address of kmalloc'd space */
struct xpc_gp *remote_GPs; /* copy of remote partition's local */
/* Get/Put values */
u64 remote_GPs_pa; /* phys address of remote partition's local */
/* Get/Put values */
/* fields used to pass args when opening or closing a channel */
void *local_openclose_args_base; /* base address of kmalloc'd space */
@ -517,19 +543,10 @@ struct xpc_partition {
void *remote_openclose_args_base; /* base address of kmalloc'd space */
struct xpc_openclose_args *remote_openclose_args; /* copy of remote's */
/* args */
u64 remote_openclose_args_pa; /* phys addr of remote's args */
/* IPI sending, receiving and handling related fields */
int remote_IPI_nasid; /* nasid of where to send IPIs */
int remote_IPI_phys_cpuid; /* phys CPU ID of where to send IPIs */
AMO_t *remote_IPI_amo_va; /* address of remote IPI AMO_t structure */
AMO_t *local_IPI_amo_va; /* address of IPI AMO_t structure */
u64 local_IPI_amo; /* IPI amo flags yet to be handled */
char IPI_owner[8]; /* IPI owner's name */
struct timer_list dropped_IPI_timer; /* dropped IPI timer */
spinlock_t IPI_lock; /* IPI handler lock */
/* channel manager related fields */
@ -537,6 +554,11 @@ struct xpc_partition {
atomic_t channel_mgr_requests; /* #of requests to activate chan mgr */
wait_queue_head_t channel_mgr_wq; /* channel mgr's wait queue */
union {
struct xpc_partition_sn2 sn2;
struct xpc_partition_uv uv;
} sn;
} ____cacheline_aligned;
/* struct xpc_partition act_state values (for XPC HB) */
@ -565,10 +587,10 @@ struct xpc_partition {
#define XPC_P_DROPPED_IPI_WAIT_INTERVAL (0.25 * HZ)
/* number of seconds to wait for other partitions to disengage */
#define XPC_DISENGAGE_REQUEST_DEFAULT_TIMELIMIT 90
#define XPC_DISENGAGE_DEFAULT_TIMELIMIT 90
/* interval in seconds to print 'waiting disengagement' messages */
#define XPC_DISENGAGE_PRINTMSG_INTERVAL 10
/* interval in seconds to print 'waiting deactivation' messages */
#define XPC_DEACTIVATE_PRINTMSG_INTERVAL 10
#define XPC_PARTID(_p) ((short)((_p) - &xpc_partitions[0]))
@ -578,13 +600,11 @@ extern struct xpc_registration xpc_registrations[];
/* found in xpc_main.c */
extern struct device *xpc_part;
extern struct device *xpc_chan;
extern int xpc_disengage_request_timelimit;
extern int xpc_disengage_request_timedout;
extern int xpc_disengage_timelimit;
extern int xpc_disengage_timedout;
extern atomic_t xpc_activate_IRQ_rcvd;
extern wait_queue_head_t xpc_activate_IRQ_wq;
extern void *xpc_heartbeating_to_mask;
extern irqreturn_t xpc_notify_IRQ_handler(int, void *);
extern void xpc_dropped_IPI_check(struct xpc_partition *);
extern void xpc_activate_partition(struct xpc_partition *);
extern void xpc_activate_kthreads(struct xpc_channel *, int);
extern void xpc_create_kthreads(struct xpc_channel *, int, int);
@ -598,31 +618,34 @@ extern void (*xpc_online_heartbeat) (void);
extern void (*xpc_check_remote_hb) (void);
extern enum xp_retval (*xpc_make_first_contact) (struct xpc_partition *);
extern u64 (*xpc_get_IPI_flags) (struct xpc_partition *);
extern void (*xpc_notify_senders_of_disconnect) (struct xpc_channel *);
extern void (*xpc_process_msg_IPI) (struct xpc_partition *, int);
extern int (*xpc_n_of_deliverable_msgs) (struct xpc_channel *);
extern struct xpc_msg *(*xpc_get_deliverable_msg) (struct xpc_channel *);
extern void (*xpc_initiate_partition_activation) (struct xpc_rsvd_page *, u64,
int);
extern void (*xpc_request_partition_activation) (struct xpc_rsvd_page *, u64,
int);
extern void (*xpc_request_partition_reactivation) (struct xpc_partition *);
extern void (*xpc_request_partition_deactivation) (struct xpc_partition *);
extern void (*xpc_cancel_partition_deactivation_request) (
struct xpc_partition *);
extern void (*xpc_process_activate_IRQ_rcvd) (int);
extern enum xp_retval (*xpc_setup_infrastructure) (struct xpc_partition *);
extern void (*xpc_teardown_infrastructure) (struct xpc_partition *);
extern void (*xpc_mark_partition_engaged) (struct xpc_partition *);
extern void (*xpc_mark_partition_disengaged) (struct xpc_partition *);
extern void (*xpc_request_partition_disengage) (struct xpc_partition *);
extern void (*xpc_cancel_partition_disengage_request) (struct xpc_partition *);
extern u64 (*xpc_partition_engaged) (u64);
extern u64 (*xpc_partition_disengage_requested) (u64);;
extern void (*xpc_clear_partition_engaged) (u64);
extern void (*xpc_clear_partition_disengage_request) (u64);
extern void (*xpc_IPI_send_local_activate) (int);
extern void (*xpc_IPI_send_activated) (struct xpc_partition *);
extern void (*xpc_IPI_send_local_reactivate) (int);
extern void (*xpc_IPI_send_disengage) (struct xpc_partition *);
extern void (*xpc_indicate_partition_engaged) (struct xpc_partition *);
extern int (*xpc_partition_engaged) (short);
extern int (*xpc_any_partition_engaged) (void);
extern void (*xpc_indicate_partition_disengaged) (struct xpc_partition *);
extern void (*xpc_assume_partition_disengaged) (short);
extern void (*xpc_IPI_send_closerequest) (struct xpc_channel *,
unsigned long *);
extern void (*xpc_IPI_send_closereply) (struct xpc_channel *, unsigned long *);
extern void (*xpc_IPI_send_openrequest) (struct xpc_channel *, unsigned long *);
extern void (*xpc_IPI_send_openreply) (struct xpc_channel *, unsigned long *);
extern void (*xpc_send_channel_closerequest) (struct xpc_channel *,
unsigned long *);
extern void (*xpc_send_channel_closereply) (struct xpc_channel *,
unsigned long *);
extern void (*xpc_send_channel_openrequest) (struct xpc_channel *,
unsigned long *);
extern void (*xpc_send_channel_openreply) (struct xpc_channel *,
unsigned long *);
extern enum xp_retval (*xpc_send_msg) (struct xpc_channel *, u32, void *, u16,
u8, xpc_notify_func, void *);
@ -646,8 +669,6 @@ extern char *xpc_remote_copy_buffer;
extern void *xpc_remote_copy_buffer_base;
extern void *xpc_kmalloc_cacheline_aligned(size_t, gfp_t, void **);
extern struct xpc_rsvd_page *xpc_setup_rsvd_page(void);
extern void xpc_allow_IPI_ops(void);
extern void xpc_restrict_IPI_ops(void);
extern int xpc_identify_activate_IRQ_sender(void);
extern int xpc_partition_disengaged(struct xpc_partition *);
extern enum xp_retval xpc_mark_partition_active(struct xpc_partition *);

214
drivers/misc/sgi-xp/xpc_channel.c
View File

@ -201,7 +201,7 @@ xpc_process_connect(struct xpc_channel *ch, unsigned long *irq_flags)
if (!(ch->flags & XPC_C_OPENREPLY)) {
ch->flags |= XPC_C_OPENREPLY;
xpc_IPI_send_openreply(ch, irq_flags);
xpc_send_channel_openreply(ch, irq_flags);
}
if (!(ch->flags & XPC_C_ROPENREPLY))
@ -219,52 +219,6 @@ xpc_process_connect(struct xpc_channel *ch, unsigned long *irq_flags)
spin_lock_irqsave(&ch->lock, *irq_flags);
}
/*
* Notify those who wanted to be notified upon delivery of their message.
*/
static void
xpc_notify_senders(struct xpc_channel *ch, enum xp_retval reason, s64 put)
{
struct xpc_notify *notify;
u8 notify_type;
s64 get = ch->w_remote_GP.get - 1;
while (++get < put && atomic_read(&ch->n_to_notify) > 0) {
notify = &ch->notify_queue[get % ch->local_nentries];
/*
* See if the notify entry indicates it was associated with
* a message who's sender wants to be notified. It is possible
* that it is, but someone else is doing or has done the
* notification.
*/
notify_type = notify->type;
if (notify_type == 0 ||
cmpxchg(&notify->type, notify_type, 0) != notify_type) {
continue;
}
DBUG_ON(notify_type != XPC_N_CALL);
atomic_dec(&ch->n_to_notify);
if (notify->func != NULL) {
dev_dbg(xpc_chan, "notify->func() called, notify=0x%p, "
"msg_number=%ld, partid=%d, channel=%d\n",
(void *)notify, get, ch->partid, ch->number);
notify->func(reason, ch->partid, ch->number,
notify->key);
dev_dbg(xpc_chan, "notify->func() returned, "
"notify=0x%p, msg_number=%ld, partid=%d, "
"channel=%d\n", (void *)notify, get,
ch->partid, ch->number);
}
}
}
/*
* Free up message queues and other stuff that were allocated for the specified
* channel.
@ -275,6 +229,8 @@ xpc_notify_senders(struct xpc_channel *ch, enum xp_retval reason, s64 put)
static void
xpc_free_msgqueues(struct xpc_channel *ch)
{
struct xpc_channel_sn2 *ch_sn2 = &ch->sn.sn2;
DBUG_ON(!spin_is_locked(&ch->lock));
DBUG_ON(atomic_read(&ch->n_to_notify) != 0);
@ -287,15 +243,15 @@ xpc_free_msgqueues(struct xpc_channel *ch)
ch->kthreads_assigned_limit = 0;
ch->kthreads_idle_limit = 0;
ch->local_GP->get = 0;
ch->local_GP->put = 0;
ch->remote_GP.get = 0;
ch->remote_GP.put = 0;
ch->w_local_GP.get = 0;
ch->w_local_GP.put = 0;
ch->w_remote_GP.get = 0;
ch->w_remote_GP.put = 0;
ch->next_msg_to_pull = 0;
ch_sn2->local_GP->get = 0;
ch_sn2->local_GP->put = 0;
ch_sn2->remote_GP.get = 0;
ch_sn2->remote_GP.put = 0;
ch_sn2->w_local_GP.get = 0;
ch_sn2->w_local_GP.put = 0;
ch_sn2->w_remote_GP.get = 0;
ch_sn2->w_remote_GP.put = 0;
ch_sn2->next_msg_to_pull = 0;
if (ch->flags & XPC_C_SETUP) {
ch->flags &= ~XPC_C_SETUP;
@ -339,7 +295,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags)
if (part->act_state == XPC_P_DEACTIVATING) {
/* can't proceed until the other side disengages from us */
if (xpc_partition_engaged(1UL << ch->partid))
if (xpc_partition_engaged(ch->partid))
return;
} else {
@ -351,7 +307,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags)
if (!(ch->flags & XPC_C_CLOSEREPLY)) {
ch->flags |= XPC_C_CLOSEREPLY;
xpc_IPI_send_closereply(ch, irq_flags);
xpc_send_channel_closereply(ch, irq_flags);
}
if (!(ch->flags & XPC_C_RCLOSEREPLY))
@ -361,7 +317,7 @@ xpc_process_disconnect(struct xpc_channel *ch, unsigned long *irq_flags)
/* wake those waiting for notify completion */
if (atomic_read(&ch->n_to_notify) > 0) {
/* >>> we do callout while holding ch->lock */
xpc_notify_senders(ch, ch->reason, ch->w_local_GP.put);
xpc_notify_senders_of_disconnect(ch);
}
/* both sides are disconnected now */
@ -734,7 +690,7 @@ xpc_connect_channel(struct xpc_channel *ch)
/* initiate the connection */
ch->flags |= (XPC_C_OPENREQUEST | XPC_C_CONNECTING);
xpc_IPI_send_openrequest(ch, &irq_flags);
xpc_send_channel_openrequest(ch, &irq_flags);
xpc_process_connect(ch, &irq_flags);
@ -743,142 +699,6 @@ xpc_connect_channel(struct xpc_channel *ch)
return xpSuccess;
}
/*
* Clear some of the msg flags in the local message queue.
*/
static inline void
xpc_clear_local_msgqueue_flags(struct xpc_channel *ch)
{
struct xpc_msg *msg;
s64 get;
get = ch->w_remote_GP.get;
do {
msg = (struct xpc_msg *)((u64)ch->local_msgqueue +
(get % ch->local_nentries) *
ch->msg_size);
msg->flags = 0;
} while (++get < ch->remote_GP.get);
}
/*
* Clear some of the msg flags in the remote message queue.
*/
static inline void
xpc_clear_remote_msgqueue_flags(struct xpc_channel *ch)
{
struct xpc_msg *msg;
s64 put;
put = ch->w_remote_GP.put;
do {
msg = (struct xpc_msg *)((u64)ch->remote_msgqueue +
(put % ch->remote_nentries) *
ch->msg_size);
msg->flags = 0;
} while (++put < ch->remote_GP.put);
}
static void
xpc_process_msg_IPI(struct xpc_partition *part, int ch_number)
{
struct xpc_channel *ch = &part->channels[ch_number];
int nmsgs_sent;
ch->remote_GP = part->remote_GPs[ch_number];
/* See what, if anything, has changed for each connected channel */
xpc_msgqueue_ref(ch);
if (ch->w_remote_GP.get == ch->remote_GP.get &&
ch->w_remote_GP.put == ch->remote_GP.put) {
/* nothing changed since GPs were last pulled */
xpc_msgqueue_deref(ch);
return;
}
if (!(ch->flags & XPC_C_CONNECTED)) {
xpc_msgqueue_deref(ch);
return;
}
/*
* First check to see if messages recently sent by us have been
* received by the other side. (The remote GET value will have
* changed since we last looked at it.)
*/
if (ch->w_remote_GP.get != ch->remote_GP.get) {
/*
* We need to notify any senders that want to be notified
* that their sent messages have been received by their
* intended recipients. We need to do this before updating
* w_remote_GP.get so that we don't allocate the same message
* queue entries prematurely (see xpc_allocate_msg()).
*/
if (atomic_read(&ch->n_to_notify) > 0) {
/*
* Notify senders that messages sent have been
* received and delivered by the other side.
*/
xpc_notify_senders(ch, xpMsgDelivered,
ch->remote_GP.get);
}
/*
* Clear msg->flags in previously sent messages, so that
* they're ready for xpc_allocate_msg().
*/
xpc_clear_local_msgqueue_flags(ch);
ch->w_remote_GP.get = ch->remote_GP.get;
dev_dbg(xpc_chan, "w_remote_GP.get changed to %ld, partid=%d, "
"channel=%d\n", ch->w_remote_GP.get, ch->partid,
ch->number);
/*
* If anyone was waiting for message queue entries to become
* available, wake them up.
*/
if (atomic_read(&ch->n_on_msg_allocate_wq) > 0)
wake_up(&ch->msg_allocate_wq);
}
/*
* Now check for newly sent messages by the other side. (The remote
* PUT value will have changed since we last looked at it.)
*/
if (ch->w_remote_GP.put != ch->remote_GP.put) {
/*
* Clear msg->flags in previously received messages, so that
* they're ready for xpc_get_deliverable_msg().
*/
xpc_clear_remote_msgqueue_flags(ch);
ch->w_remote_GP.put = ch->remote_GP.put;
dev_dbg(xpc_chan, "w_remote_GP.put changed to %ld, partid=%d, "
"channel=%d\n", ch->w_remote_GP.put, ch->partid,
ch->number);
nmsgs_sent = ch->w_remote_GP.put - ch->w_local_GP.get;
if (nmsgs_sent > 0) {
dev_dbg(xpc_chan, "msgs waiting to be copied and "
"delivered=%d, partid=%d, channel=%d\n",
nmsgs_sent, ch->partid, ch->number);
if (ch->flags & XPC_C_CONNECTEDCALLOUT_MADE)
xpc_activate_kthreads(ch, nmsgs_sent);
}
}
xpc_msgqueue_deref(ch);
}
void
xpc_process_channel_activity(struct xpc_partition *part)
{
@ -1117,7 +937,7 @@ xpc_disconnect_channel(const int line, struct xpc_channel *ch,
XPC_C_ROPENREQUEST | XPC_C_ROPENREPLY |
XPC_C_CONNECTING | XPC_C_CONNECTED);
xpc_IPI_send_closerequest(ch, irq_flags);
xpc_send_channel_closerequest(ch, irq_flags);
if (channel_was_connected)
ch->flags |= XPC_C_WASCONNECTED;

276
drivers/misc/sgi-xp/xpc_main.c
View File

@ -26,7 +26,7 @@
* Caveats:
*
* . We currently have no way to determine which nasid an IPI came
* from. Thus, xpc_IPI_send() does a remote AMO write followed by
* from. Thus, >>> xpc_IPI_send() does a remote AMO write followed by
* an IPI. The AMO indicates where data is to be pulled from, so
* after the IPI arrives, the remote partition checks the AMO word.
* The IPI can actually arrive before the AMO however, so other code
@ -89,9 +89,9 @@ static int xpc_hb_check_interval = XPC_HB_CHECK_DEFAULT_INTERVAL;
static int xpc_hb_check_min_interval = 10;
static int xpc_hb_check_max_interval = 120;
int xpc_disengage_request_timelimit = XPC_DISENGAGE_REQUEST_DEFAULT_TIMELIMIT;
static int xpc_disengage_request_min_timelimit; /* = 0 */
static int xpc_disengage_request_max_timelimit = 120;
int xpc_disengage_timelimit = XPC_DISENGAGE_DEFAULT_TIMELIMIT;
static int xpc_disengage_min_timelimit; /* = 0 */
static int xpc_disengage_max_timelimit = 120;
static ctl_table xpc_sys_xpc_hb_dir[] = {
{
@ -124,14 +124,14 @@ static ctl_table xpc_sys_xpc_dir[] = {
.child = xpc_sys_xpc_hb_dir},
{
.ctl_name = CTL_UNNUMBERED,
.procname = "disengage_request_timelimit",
.data = &xpc_disengage_request_timelimit,
.procname = "disengage_timelimit",
.data = &xpc_disengage_timelimit,
.maxlen = sizeof(int),
.mode = 0644,
.proc_handler = &proc_dointvec_minmax,
.strategy = &sysctl_intvec,
.extra1 = &xpc_disengage_request_min_timelimit,
.extra2 = &xpc_disengage_request_max_timelimit},
.extra1 = &xpc_disengage_min_timelimit,
.extra2 = &xpc_disengage_max_timelimit},
{}
};
static ctl_table xpc_sys_dir[] = {
@ -144,8 +144,8 @@ static ctl_table xpc_sys_dir[] = {
};
static struct ctl_table_header *xpc_sysctl;
/* non-zero if any remote partition disengage request was timed out */
int xpc_disengage_request_timedout;
/* non-zero if any remote partition disengage was timed out */
int xpc_disengage_timedout;
/* #of activate IRQs received */
atomic_t xpc_activate_IRQ_rcvd = ATOMIC_INIT(0);
@ -184,38 +184,36 @@ void (*xpc_online_heartbeat) (void);
void (*xpc_check_remote_hb) (void);
enum xp_retval (*xpc_make_first_contact) (struct xpc_partition *part);
void (*xpc_notify_senders_of_disconnect) (struct xpc_channel *ch);
u64 (*xpc_get_IPI_flags) (struct xpc_partition *part);
void (*xpc_process_msg_IPI) (struct xpc_partition *part, int ch_number);
int (*xpc_n_of_deliverable_msgs) (struct xpc_channel *ch);
struct xpc_msg *(*xpc_get_deliverable_msg) (struct xpc_channel *ch);
void (*xpc_initiate_partition_activation) (struct xpc_rsvd_page *remote_rp,
u64 remote_rp_pa, int nasid);
void (*xpc_request_partition_activation) (struct xpc_rsvd_page *remote_rp,
u64 remote_rp_pa, int nasid);
void (*xpc_request_partition_reactivation) (struct xpc_partition *part);
void (*xpc_request_partition_deactivation) (struct xpc_partition *part);
void (*xpc_cancel_partition_deactivation_request) (struct xpc_partition *part);
void (*xpc_process_activate_IRQ_rcvd) (int n_IRQs_expected);
enum xp_retval (*xpc_setup_infrastructure) (struct xpc_partition *part);
void (*xpc_teardown_infrastructure) (struct xpc_partition *part);
void (*xpc_mark_partition_engaged) (struct xpc_partition *part);
void (*xpc_mark_partition_disengaged) (struct xpc_partition *part);
void (*xpc_request_partition_disengage) (struct xpc_partition *part);
void (*xpc_cancel_partition_disengage_request) (struct xpc_partition *part);
u64 (*xpc_partition_engaged) (u64 partid_mask);
u64 (*xpc_partition_disengage_requested) (u64 partid_mask);
void (*xpc_clear_partition_engaged) (u64 partid_mask);
void (*xpc_clear_partition_disengage_request) (u64 partid_mask);
void (*xpc_indicate_partition_engaged) (struct xpc_partition *part);
int (*xpc_partition_engaged) (short partid);
int (*xpc_any_partition_engaged) (void);
void (*xpc_indicate_partition_disengaged) (struct xpc_partition *part);
void (*xpc_assume_partition_disengaged) (short partid);
void (*xpc_IPI_send_local_activate) (int from_nasid);
void (*xpc_IPI_send_activated) (struct xpc_partition *part);
void (*xpc_IPI_send_local_reactivate) (int from_nasid);
void (*xpc_IPI_send_disengage) (struct xpc_partition *part);
void (*xpc_IPI_send_closerequest) (struct xpc_channel *ch,
unsigned long *irq_flags);
void (*xpc_IPI_send_closereply) (struct xpc_channel *ch,
unsigned long *irq_flags);
void (*xpc_IPI_send_openrequest) (struct xpc_channel *ch,
unsigned long *irq_flags);
void (*xpc_IPI_send_openreply) (struct xpc_channel *ch,
unsigned long *irq_flags);
void (*xpc_send_channel_closerequest) (struct xpc_channel *ch,
unsigned long *irq_flags);
void (*xpc_send_channel_closereply) (struct xpc_channel *ch,
unsigned long *irq_flags);
void (*xpc_send_channel_openrequest) (struct xpc_channel *ch,
unsigned long *irq_flags);
void (*xpc_send_channel_openreply) (struct xpc_channel *ch,
unsigned long *irq_flags);
enum xp_retval (*xpc_send_msg) (struct xpc_channel *ch, u32 flags,
void *payload, u16 payload_size, u8 notify_type,
@ -223,19 +221,19 @@ enum xp_retval (*xpc_send_msg) (struct xpc_channel *ch, u32 flags,
void (*xpc_received_msg) (struct xpc_channel *ch, struct xpc_msg *msg);
/*
* Timer function to enforce the timelimit on the partition disengage request.
* Timer function to enforce the timelimit on the partition disengage.
*/
static void
xpc_timeout_partition_disengage_request(unsigned long data)
xpc_timeout_partition_disengage(unsigned long data)
{
struct xpc_partition *part = (struct xpc_partition *)data;
DBUG_ON(time_is_after_jiffies(part->disengage_request_timeout));
DBUG_ON(time_is_after_jiffies(part->disengage_timeout));
(void)xpc_partition_disengaged(part);
DBUG_ON(part->disengage_request_timeout != 0);
DBUG_ON(xpc_partition_engaged(1UL << XPC_PARTID(part)) != 0);
DBUG_ON(part->disengage_timeout != 0);
DBUG_ON(xpc_partition_engaged(XPC_PARTID(part)));
}
/*
@ -464,7 +462,7 @@ xpc_activating(void *__partid)
if (part->reason == xpReactivating) {
/* interrupting ourselves results in activating partition */
xpc_IPI_send_local_reactivate(part->reactivate_nasid);
xpc_request_partition_reactivation(part);
}
return 0;
@ -496,82 +494,6 @@ xpc_activate_partition(struct xpc_partition *part)
}
}
/*
* Check to see if there is any channel activity to/from the specified
* partition.
*/
static void
xpc_check_for_channel_activity(struct xpc_partition *part)
{
u64 IPI_amo;
unsigned long irq_flags;
/* this needs to be uncommented, but I'm thinking this function and the */
/* ones that call it need to be moved into xpc_sn2.c... */
IPI_amo = 0; /* = xpc_IPI_receive(part->local_IPI_amo_va); */
if (IPI_amo == 0)
return;
spin_lock_irqsave(&part->IPI_lock, irq_flags);
part->local_IPI_amo |= IPI_amo;
spin_unlock_irqrestore(&part->IPI_lock, irq_flags);
dev_dbg(xpc_chan, "received IPI from partid=%d, IPI_amo=0x%lx\n",
XPC_PARTID(part), IPI_amo);
xpc_wakeup_channel_mgr(part);
}
/*
* Handle the receipt of a SGI_XPC_NOTIFY IRQ by seeing whether the specified
* partition actually sent it. Since SGI_XPC_NOTIFY IRQs may be shared by more
* than one partition, we use an AMO_t structure per partition to indicate
* whether a partition has sent an IPI or not. If it has, then wake up the
* associated kthread to handle it.
*
* All SGI_XPC_NOTIFY IRQs received by XPC are the result of IPIs sent by XPC
* running on other partitions.
*
* Noteworthy Arguments:
*
* irq - Interrupt ReQuest number. NOT USED.
*
* dev_id - partid of IPI's potential sender.
*/
irqreturn_t
xpc_notify_IRQ_handler(int irq, void *dev_id)
{
short partid = (short)(u64)dev_id;
struct xpc_partition *part = &xpc_partitions[partid];
DBUG_ON(partid < 0 || partid >= xp_max_npartitions);
if (xpc_part_ref(part)) {
xpc_check_for_channel_activity(part);
xpc_part_deref(part);
}
return IRQ_HANDLED;
}
/*
* Check to see if xpc_notify_IRQ_handler() dropped any IPIs on the floor
* because the write to their associated IPI amo completed after the IRQ/IPI
* was received.
*/
void
xpc_dropped_IPI_check(struct xpc_partition *part)
{
if (xpc_part_ref(part)) {
xpc_check_for_channel_activity(part);
part->dropped_IPI_timer.expires = jiffies +
XPC_P_DROPPED_IPI_WAIT_INTERVAL;
add_timer(&part->dropped_IPI_timer);
xpc_part_deref(part);
}
}
void
xpc_activate_kthreads(struct xpc_channel *ch, int needed)
{
@ -616,7 +538,7 @@ xpc_kthread_waitmsgs(struct xpc_partition *part, struct xpc_channel *ch)
do {
/* deliver messages to their intended recipients */
while (ch->w_local_GP.get < ch->w_remote_GP.put &&
while (xpc_n_of_deliverable_msgs(ch) > 0 &&
!(ch->flags & XPC_C_DISCONNECTING)) {
xpc_deliver_msg(ch);
}
@ -632,7 +554,7 @@ xpc_kthread_waitmsgs(struct xpc_partition *part, struct xpc_channel *ch)
"wait_event_interruptible_exclusive()\n");
(void)wait_event_interruptible_exclusive(ch->idle_wq,
(ch->w_local_GP.get < ch->w_remote_GP.put ||
(xpc_n_of_deliverable_msgs(ch) > 0 ||
(ch->flags & XPC_C_DISCONNECTING)));
atomic_dec(&ch->kthreads_idle);
@ -677,7 +599,7 @@ xpc_kthread_start(void *args)
* additional kthreads to help deliver them. We only
* need one less than total #of messages to deliver.
*/
n_needed = ch->w_remote_GP.put - ch->w_local_GP.get - 1;
n_needed = xpc_n_of_deliverable_msgs(ch) - 1;
if (n_needed > 0 && !(ch->flags & XPC_C_DISCONNECTING))
xpc_activate_kthreads(ch, n_needed);
@ -703,11 +625,9 @@ xpc_kthread_start(void *args)
}
spin_unlock_irqrestore(&ch->lock, irq_flags);
if (atomic_dec_return(&ch->kthreads_assigned) == 0) {
if (atomic_dec_return(&part->nchannels_engaged) == 0) {
xpc_mark_partition_disengaged(part);
xpc_IPI_send_disengage(part);
}
if (atomic_dec_return(&ch->kthreads_assigned) == 0 &&
atomic_dec_return(&part->nchannels_engaged) == 0) {
xpc_indicate_partition_disengaged(part);
}
xpc_msgqueue_deref(ch);
@ -758,9 +678,9 @@ xpc_create_kthreads(struct xpc_channel *ch, int needed,
} else if (ch->flags & XPC_C_DISCONNECTING) {
break;
} else if (atomic_inc_return(&ch->kthreads_assigned) == 1) {
if (atomic_inc_return(&part->nchannels_engaged) == 1)
xpc_mark_partition_engaged(part);
} else if (atomic_inc_return(&ch->kthreads_assigned) == 1 &&
atomic_inc_return(&part->nchannels_engaged) == 1) {
xpc_indicate_partition_engaged(part);
}
(void)xpc_part_ref(part);
xpc_msgqueue_ref(ch);
@ -782,8 +702,7 @@ xpc_create_kthreads(struct xpc_channel *ch, int needed,
if (atomic_dec_return(&ch->kthreads_assigned) == 0 &&
atomic_dec_return(&part->nchannels_engaged) == 0) {
xpc_mark_partition_disengaged(part);
xpc_IPI_send_disengage(part);
xpc_indicate_partition_disengaged(part);
}
xpc_msgqueue_deref(ch);
xpc_part_deref(part);
@ -862,7 +781,7 @@ xpc_do_exit(enum xp_retval reason)
short partid;
int active_part_count, printed_waiting_msg = 0;
struct xpc_partition *part;
unsigned long printmsg_time, disengage_request_timeout = 0;
unsigned long printmsg_time, disengage_timeout = 0;
/* a 'rmmod XPC' and a 'reboot' cannot both end up here together */
DBUG_ON(xpc_exiting == 1);
@ -886,8 +805,8 @@ xpc_do_exit(enum xp_retval reason)
/* wait for all partitions to become inactive */
printmsg_time = jiffies + (XPC_DISENGAGE_PRINTMSG_INTERVAL * HZ);
xpc_disengage_request_timedout = 0;
printmsg_time = jiffies + (XPC_DEACTIVATE_PRINTMSG_INTERVAL * HZ);
xpc_disengage_timedout = 0;
do {
active_part_count = 0;
@ -904,36 +823,32 @@ xpc_do_exit(enum xp_retval reason)
XPC_DEACTIVATE_PARTITION(part, reason);
if (part->disengage_request_timeout >
disengage_request_timeout) {
disengage_request_timeout =
part->disengage_request_timeout;
}
if (part->disengage_timeout > disengage_timeout)
disengage_timeout = part->disengage_timeout;
}
if (xpc_partition_engaged(-1UL)) {
if (xpc_any_partition_engaged()) {
if (time_is_before_jiffies(printmsg_time)) {
dev_info(xpc_part, "waiting for remote "
"partitions to disengage, timeout in "
"%ld seconds\n",
(disengage_request_timeout - jiffies)
/ HZ);
"partitions to deactivate, timeout in "
"%ld seconds\n", (disengage_timeout -
jiffies) / HZ);
printmsg_time = jiffies +
(XPC_DISENGAGE_PRINTMSG_INTERVAL * HZ);
(XPC_DEACTIVATE_PRINTMSG_INTERVAL * HZ);
printed_waiting_msg = 1;
}
} else if (active_part_count > 0) {
if (printed_waiting_msg) {
dev_info(xpc_part, "waiting for local partition"
" to disengage\n");
" to deactivate\n");
printed_waiting_msg = 0;
}
} else {
if (!xpc_disengage_request_timedout) {
if (!xpc_disengage_timedout) {
dev_info(xpc_part, "all partitions have "
"disengaged\n");
"deactivated\n");
}
break;
}
@ -943,7 +858,7 @@ xpc_do_exit(enum xp_retval reason)
} while (1);
DBUG_ON(xpc_partition_engaged(-1UL));
DBUG_ON(xpc_any_partition_engaged());
DBUG_ON(xpc_any_hbs_allowed() != 0);
/* indicate to others that our reserved page is uninitialized */
@ -996,15 +911,16 @@ xpc_system_reboot(struct notifier_block *nb, unsigned long event, void *unused)
}
/*
* Notify other partitions to disengage from all references to our memory.
* Notify other partitions to deactivate from us by first disengaging from all
* references to our memory.
*/
static void
xpc_die_disengage(void)
xpc_die_deactivate(void)
{
struct xpc_partition *part;
short partid;
unsigned long engaged;
long time, printmsg_time, disengage_request_timeout;
int any_engaged;
long time, printmsg_time, disengage_timeout;
/* keep xpc_hb_checker thread from doing anything (just in case) */
xpc_exiting = 1;
@ -1014,43 +930,37 @@ xpc_die_disengage(void)
for (partid = 0; partid < xp_max_npartitions; partid++) {
part = &xpc_partitions[partid];
if (!XPC_SUPPORTS_DISENGAGE_REQUEST(part->
remote_vars_version)) {
/* just in case it was left set by an earlier XPC */
xpc_clear_partition_engaged(1UL << partid);
continue;
}
if (xpc_partition_engaged(1UL << partid) ||
if (xpc_partition_engaged(partid) ||
part->act_state != XPC_P_INACTIVE) {
xpc_request_partition_disengage(part);
xpc_mark_partition_disengaged(part);
xpc_IPI_send_disengage(part);
xpc_request_partition_deactivation(part);
xpc_indicate_partition_disengaged(part);
}
}
time = rtc_time();
printmsg_time = time +
(XPC_DISENGAGE_PRINTMSG_INTERVAL * sn_rtc_cycles_per_second);
disengage_request_timeout = time +
(xpc_disengage_request_timelimit * sn_rtc_cycles_per_second);
(XPC_DEACTIVATE_PRINTMSG_INTERVAL * sn_rtc_cycles_per_second);
disengage_timeout = time +
(xpc_disengage_timelimit * sn_rtc_cycles_per_second);
/* wait for all other partitions to disengage from us */
/*
* Though we requested that all other partitions deactivate from us,
* we only wait until they've all disengaged.
*/
while (1) {
engaged = xpc_partition_engaged(-1UL);
if (!engaged) {
dev_info(xpc_part, "all partitions have disengaged\n");
any_engaged = xpc_any_partition_engaged();
if (!any_engaged) {
dev_info(xpc_part, "all partitions have deactivated\n");
break;
}
time = rtc_time();
if (time >= disengage_request_timeout) {
if (time >= disengage_timeout) {
for (partid = 0; partid < xp_max_npartitions;
partid++) {
if (engaged & (1UL << partid)) {
dev_info(xpc_part, "disengage from "
if (xpc_partition_engaged(partid)) {
dev_info(xpc_part, "deactivate from "
"remote partition %d timed "
"out\n", partid);
}
@ -1060,11 +970,11 @@ xpc_die_disengage(void)
if (time >= printmsg_time) {
dev_info(xpc_part, "waiting for remote partitions to "
"disengage, timeout in %ld seconds\n",
(disengage_request_timeout - time) /
"deactivate, timeout in %ld seconds\n",
(disengage_timeout - time) /
sn_rtc_cycles_per_second);
printmsg_time = time +
(XPC_DISENGAGE_PRINTMSG_INTERVAL *
(XPC_DEACTIVATE_PRINTMSG_INTERVAL *
sn_rtc_cycles_per_second);
}
}
@ -1084,7 +994,7 @@ xpc_system_die(struct notifier_block *nb, unsigned long event, void *unused)
switch (event) {
case DIE_MACHINE_RESTART:
case DIE_MACHINE_HALT:
xpc_die_disengage();
xpc_die_deactivate();
break;
case DIE_KDEBUG_ENTER:
@ -1183,10 +1093,10 @@ xpc_init(void)
part->act_state = XPC_P_INACTIVE;
XPC_SET_REASON(part, 0, 0);
init_timer(&part->disengage_request_timer);
part->disengage_request_timer.function =
xpc_timeout_partition_disengage_request;
part->disengage_request_timer.data = (unsigned long)part;
init_timer(&part->disengage_timer);
part->disengage_timer.function =
xpc_timeout_partition_disengage;
part->disengage_timer.data = (unsigned long)part;
part->setup_state = XPC_P_UNSET;
init_waitqueue_head(&part->teardown_wq);
@ -1295,9 +1205,9 @@ module_param(xpc_hb_check_interval, int, 0);
MODULE_PARM_DESC(xpc_hb_check_interval, "Number of seconds between "
"heartbeat checks.");
module_param(xpc_disengage_request_timelimit, int, 0);
MODULE_PARM_DESC(xpc_disengage_request_timelimit, "Number of seconds to wait "
"for disengage request to complete.");
module_param(xpc_disengage_timelimit, int, 0);
MODULE_PARM_DESC(xpc_disengage_timelimit, "Number of seconds to wait "
"for disengage to complete.");
module_param(xpc_kdebug_ignore, int, 0);
MODULE_PARM_DESC(xpc_kdebug_ignore, "Should lack of heartbeat be ignored by "

59
drivers/misc/sgi-xp/xpc_partition.c
View File

@ -242,7 +242,7 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
return xpBadVersion;
}
/* check that both local and remote partids are valid for each side */
/* check that both remote and local partids are valid for each side */
if (remote_rp->SAL_partid < 0 ||
remote_rp->SAL_partid >= xp_max_npartitions ||
remote_rp->max_npartitions <= sn_partition_id) {
@ -256,8 +256,9 @@ xpc_get_remote_rp(int nasid, u64 *discovered_nasids,
}
/*
* See if the other side has responded to a partition disengage request
* from us.
* See if the other side has responded to a partition deactivate request
* from us. Though we requested the remote partition to deactivate with regard
* to us, we really only need to wait for the other side to disengage from us.
*/
int
xpc_partition_disengaged(struct xpc_partition *part)
@ -265,41 +266,37 @@ xpc_partition_disengaged(struct xpc_partition *part)
short partid = XPC_PARTID(part);
int disengaged;
disengaged = (xpc_partition_engaged(1UL << partid) == 0);
if (part->disengage_request_timeout) {
disengaged = !xpc_partition_engaged(partid);
if (part->disengage_timeout) {
if (!disengaged) {
if (time_is_after_jiffies(part->
disengage_request_timeout)) {
if (time_is_after_jiffies(part->disengage_timeout)) {
/* timelimit hasn't been reached yet */
return 0;
}
/*
* Other side hasn't responded to our disengage
* Other side hasn't responded to our deactivate
* request in a timely fashion, so assume it's dead.
*/
dev_info(xpc_part, "disengage from remote partition %d "
"timed out\n", partid);
xpc_disengage_request_timedout = 1;
xpc_clear_partition_engaged(1UL << partid);
dev_info(xpc_part, "deactivate request to remote "
"partition %d timed out\n", partid);
xpc_disengage_timedout = 1;
xpc_assume_partition_disengaged(partid);
disengaged = 1;
}
part->disengage_request_timeout = 0;
part->disengage_timeout = 0;
/* cancel the timer function, provided it's not us */
if (!in_interrupt()) {
del_singleshot_timer_sync(&part->
disengage_request_timer);
}
if (!in_interrupt())
del_singleshot_timer_sync(&part->disengage_timer);
DBUG_ON(part->act_state != XPC_P_DEACTIVATING &&
part->act_state != XPC_P_INACTIVE);
if (part->act_state != XPC_P_INACTIVE)
xpc_wakeup_channel_mgr(part);
if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version))
xpc_cancel_partition_disengage_request(part);
xpc_cancel_partition_deactivation_request(part);
}
return disengaged;
}
@ -329,7 +326,7 @@ xpc_mark_partition_active(struct xpc_partition *part)
}
/*
* Notify XPC that the partition is down.
* Start the process of deactivating the specified partition.
*/
void
xpc_deactivate_partition(const int line, struct xpc_partition *part,
@ -344,7 +341,7 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
spin_unlock_irqrestore(&part->act_lock, irq_flags);
if (reason == xpReactivating) {
/* we interrupt ourselves to reactivate partition */
xpc_IPI_send_local_reactivate(part->reactivate_nasid);
xpc_request_partition_reactivation(part);
}
return;
}
@ -362,17 +359,13 @@ xpc_deactivate_partition(const int line, struct xpc_partition *part,
spin_unlock_irqrestore(&part->act_lock, irq_flags);
if (XPC_SUPPORTS_DISENGAGE_REQUEST(part->remote_vars_version)) {
xpc_request_partition_disengage(part);
xpc_IPI_send_disengage(part);
/* ask remote partition to deactivate with regard to us */
xpc_request_partition_deactivation(part);
/* set a timelimit on the disengage request */
part->disengage_request_timeout = jiffies +
(xpc_disengage_request_timelimit * HZ);
part->disengage_request_timer.expires =
part->disengage_request_timeout;
add_timer(&part->disengage_request_timer);
}
/* set a timelimit on the disengage phase of the deactivation request */
part->disengage_timeout = jiffies + (xpc_disengage_timelimit * HZ);
part->disengage_timer.expires = part->disengage_timeout;
add_timer(&part->disengage_timer);
dev_dbg(xpc_part, "bringing partition %d down, reason = %d\n",
XPC_PARTID(part), reason);
@ -505,8 +498,8 @@ xpc_discovery(void)
continue;
}
xpc_initiate_partition_activation(remote_rp,
remote_rp_pa, nasid);
xpc_request_partition_activation(remote_rp,
remote_rp_pa, nasid);
}
}

865
drivers/misc/sgi-xp/xpc_sn2.c
View File

File diff suppressed because it is too large Load Diff

15
drivers/misc/sgi-xp/xpc_uv.c
View File

@ -63,8 +63,8 @@ xpc_heartbeat_exit_uv(void)
}
static void
xpc_initiate_partition_activation_uv(struct xpc_rsvd_page *remote_rp,
u64 remote_rp_pa, int nasid)
xpc_request_partition_activation_uv(struct xpc_rsvd_page *remote_rp,
u64 remote_rp_pa, int nasid)
{
short partid = remote_rp->SAL_partid;
struct xpc_partition *part = &xpc_partitions[partid];
@ -78,6 +78,12 @@ xpc_initiate_partition_activation_uv(struct xpc_rsvd_page *remote_rp,
xpc_IPI_send_local_activate_uv(part);
}
static void
xpc_request_partition_reactivation_uv(struct xpc_partition *part)
{
xpc_IPI_send_local_activate_uv(part);
}
/*
* Setup the infrastructure necessary to support XPartition Communication
* between the specified remote partition and the local one.
@ -128,8 +134,9 @@ xpc_init_uv(void)
xpc_increment_heartbeat = xpc_increment_heartbeat_uv;
xpc_heartbeat_init = xpc_heartbeat_init_uv;
xpc_heartbeat_exit = xpc_heartbeat_exit_uv;
xpc_initiate_partition_activation =
xpc_initiate_partition_activation_uv;
xpc_request_partition_activation = xpc_request_partition_activation_uv;
xpc_request_partition_reactivation =
xpc_request_partition_reactivation_uv;
xpc_setup_infrastructure = xpc_setup_infrastructure_uv;
xpc_teardown_infrastructure = xpc_teardown_infrastructure_uv;
xpc_make_first_contact = xpc_make_first_contact_uv;