From 81fe7883d2c8a80a7145ad22f8cd8514d05412b9 Mon Sep 17 00:00:00 2001 From: Dean Nelson Date: Tue, 29 Jul 2008 22:34:15 -0700 Subject: [PATCH] sgi-xp: add 'jiffies' to reserved page's timestamp name Rename XPC's reserved page's timestamp member to reflect the units of time involved. Signed-off-by: Dean Nelson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/sgi-xp/xpc.h | 6 +++--- drivers/misc/sgi-xp/xpc_main.c | 8 ++++---- drivers/misc/sgi-xp/xpc_partition.c | 14 +++++++------- drivers/misc/sgi-xp/xpc_sn2.c | 26 ++++++++++++++------------ 4 files changed, 28 insertions(+), 26 deletions(-) diff --git a/drivers/misc/sgi-xp/xpc.h b/drivers/misc/sgi-xp/xpc.h index 0907934cdd8f..e194d3140f68 100644 --- a/drivers/misc/sgi-xp/xpc.h +++ b/drivers/misc/sgi-xp/xpc.h @@ -87,7 +87,7 @@ * which are partition specific (vars part). These are setup by XPC. * (Local partition's vars pointers are xpc_vars and xpc_vars_part.) * - * Note: Until 'stamp' is set non-zero, the partition XPC code has not been + * Note: Until 'ts_jiffies' is set non-zero, the partition XPC code has not been * initialized. */ struct xpc_rsvd_page { @@ -101,7 +101,7 @@ struct xpc_rsvd_page { u64 vars_pa; /* physical address of struct xpc_vars */ u64 activate_mq_gpa; /* global phys address of activate_mq */ } sn; - unsigned long stamp; /* time when reserved page was setup by XPC */ + unsigned long ts_jiffies; /* timestamp when rsvd pg was setup by XPC */ u64 pad2[10]; /* align to last u64 in 2nd 64-byte cacheline */ u64 SAL_nasids_size; /* SAL: size of each nasid mask in bytes */ }; @@ -534,7 +534,7 @@ struct xpc_partition { /* XPC HB infrastructure */ u8 remote_rp_version; /* version# of partition's rsvd pg */ - unsigned long remote_rp_stamp; /* time when rsvd pg was initialized */ + unsigned long remote_rp_ts_jiffies; /* timestamp when rsvd pg setup */ u64 remote_rp_pa; /* phys addr of partition's rsvd pg */ u64 last_heartbeat; /* HB at last read */ u32 activate_IRQ_rcvd; /* IRQs since activation */ diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c index 36dfccea5247..e7ff9e1670f6 100644 --- a/drivers/misc/sgi-xp/xpc_main.c +++ b/drivers/misc/sgi-xp/xpc_main.c @@ -862,8 +862,8 @@ xpc_do_exit(enum xp_retval reason) DBUG_ON(xpc_any_partition_engaged()); DBUG_ON(xpc_any_hbs_allowed() != 0); - /* indicate to others that our reserved page is uninitialized */ - xpc_rsvd_page->stamp = 0; + /* a zero timestamp indicates our rsvd page is not initialized */ + xpc_rsvd_page->ts_jiffies = 0; if (reason == xpUnloading) { (void)unregister_die_notifier(&xpc_die_notifier); @@ -1152,8 +1152,8 @@ xpc_init(void) /* initialization was not successful */ out_3: - /* indicate to others that our reserved page is uninitialized */ - xpc_rsvd_page->stamp = 0; + /* a zero timestamp indicates our rsvd page is not initialized */ + xpc_rsvd_page->ts_jiffies = 0; (void)unregister_die_notifier(&xpc_die_notifier); (void)unregister_reboot_notifier(&xpc_reboot_notifier); diff --git a/drivers/misc/sgi-xp/xpc_partition.c b/drivers/misc/sgi-xp/xpc_partition.c index ca6784f55970..70d4a00c9723 100644 --- a/drivers/misc/sgi-xp/xpc_partition.c +++ b/drivers/misc/sgi-xp/xpc_partition.c @@ -133,7 +133,7 @@ xpc_setup_rsvd_page(void) { struct xpc_rsvd_page *rp; u64 rp_pa; - unsigned long new_stamp; + unsigned long new_ts_jiffies; /* get the local reserved page's address */ @@ -183,10 +183,10 @@ xpc_setup_rsvd_page(void) * This signifies to the remote partition that our reserved * page is initialized. */ - new_stamp = jiffies; - if (new_stamp == 0 || new_stamp == rp->stamp) - new_stamp++; - rp->stamp = new_stamp; + new_ts_jiffies = jiffies; + if (new_ts_jiffies == 0 || new_ts_jiffies == rp->ts_jiffies) + new_ts_jiffies++; + rp->ts_jiffies = new_ts_jiffies; return rp; } @@ -225,8 +225,8 @@ xpc_get_remote_rp(int nasid, unsigned long *discovered_nasids, discovered_nasids[l] |= remote_part_nasids[l]; } - /* see if the reserved page has been set up by XPC */ - if (remote_rp->stamp == 0) + /* zero timestamp indicates the reserved page has not been setup */ + if (remote_rp->ts_jiffies == 0) return xpRsvdPageNotSet; if (XPC_VERSION_MAJOR(remote_rp->version) != diff --git a/drivers/misc/sgi-xp/xpc_sn2.c b/drivers/misc/sgi-xp/xpc_sn2.c index f82889f60151..4b5f69edf0d2 100644 --- a/drivers/misc/sgi-xp/xpc_sn2.c +++ b/drivers/misc/sgi-xp/xpc_sn2.c @@ -863,8 +863,8 @@ xpc_partition_deactivation_requested_sn2(short partid) */ static void xpc_update_partition_info_sn2(struct xpc_partition *part, u8 remote_rp_version, - unsigned long *remote_rp_stamp, u64 remote_rp_pa, - u64 remote_vars_pa, + unsigned long *remote_rp_ts_jiffies, + u64 remote_rp_pa, u64 remote_vars_pa, struct xpc_vars_sn2 *remote_vars) { struct xpc_partition_sn2 *part_sn2 = &part->sn.sn2; @@ -873,9 +873,9 @@ xpc_update_partition_info_sn2(struct xpc_partition *part, u8 remote_rp_version, dev_dbg(xpc_part, " remote_rp_version = 0x%016x\n", part->remote_rp_version); - part->remote_rp_stamp = *remote_rp_stamp; - dev_dbg(xpc_part, " remote_rp_stamp = 0x%016lx\n", - part->remote_rp_stamp); + part->remote_rp_ts_jiffies = *remote_rp_ts_jiffies; + dev_dbg(xpc_part, " remote_rp_ts_jiffies = 0x%016lx\n", + part->remote_rp_ts_jiffies); part->remote_rp_pa = remote_rp_pa; dev_dbg(xpc_part, " remote_rp_pa = 0x%016lx\n", part->remote_rp_pa); @@ -933,7 +933,7 @@ xpc_identify_activate_IRQ_req_sn2(int nasid) u64 remote_vars_pa; int remote_rp_version; int reactivate = 0; - unsigned long remote_rp_stamp = 0; + unsigned long remote_rp_ts_jiffies = 0; short partid; struct xpc_partition *part; struct xpc_partition_sn2 *part_sn2; @@ -952,7 +952,7 @@ xpc_identify_activate_IRQ_req_sn2(int nasid) remote_vars_pa = remote_rp->sn.vars_pa; remote_rp_version = remote_rp->version; - remote_rp_stamp = remote_rp->stamp; + remote_rp_ts_jiffies = remote_rp->ts_jiffies; partid = remote_rp->SAL_partid; part = &xpc_partitions[partid]; @@ -981,8 +981,9 @@ xpc_identify_activate_IRQ_req_sn2(int nasid) part->act_state == XPC_P_INACTIVE) { xpc_update_partition_info_sn2(part, remote_rp_version, - &remote_rp_stamp, remote_rp_pa, - remote_vars_pa, remote_vars); + &remote_rp_ts_jiffies, + remote_rp_pa, remote_vars_pa, + remote_vars); if (xpc_partition_deactivation_requested_sn2(partid)) { /* @@ -999,7 +1000,7 @@ xpc_identify_activate_IRQ_req_sn2(int nasid) DBUG_ON(part->remote_rp_version == 0); DBUG_ON(part_sn2->remote_vars_version == 0); - if (remote_rp_stamp != part->remote_rp_stamp) { + if (remote_rp_ts_jiffies != part->remote_rp_ts_jiffies) { /* the other side rebooted */ @@ -1007,8 +1008,9 @@ xpc_identify_activate_IRQ_req_sn2(int nasid) DBUG_ON(xpc_partition_deactivation_requested_sn2(partid)); xpc_update_partition_info_sn2(part, remote_rp_version, - &remote_rp_stamp, remote_rp_pa, - remote_vars_pa, remote_vars); + &remote_rp_ts_jiffies, + remote_rp_pa, remote_vars_pa, + remote_vars); reactivate = 1; } -- 2.20.1