diff options
Diffstat (limited to 'arch/x86/platform/uv/tlb_uv.c')
| -rw-r--r-- | arch/x86/platform/uv/tlb_uv.c | 69 |
1 files changed, 47 insertions, 22 deletions
diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index 68e467f69fe..db8b915f54b 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -296,14 +296,18 @@ static void bau_process_message(struct msg_desc *mdp, } /* - * Determine the first cpu on a uvhub. + * Determine the first cpu on a pnode. */ -static int uvhub_to_first_cpu(int uvhub) +static int pnode_to_first_cpu(int pnode, struct bau_control *smaster) { int cpu; - for_each_present_cpu(cpu) - if (uvhub == uv_cpu_to_blade_id(cpu)) + struct hub_and_pnode *hpp; + + for_each_present_cpu(cpu) { + hpp = &smaster->thp[cpu]; + if (pnode == hpp->pnode) return cpu; + } return -1; } @@ -366,28 +370,32 @@ static void do_reset(void *ptr) * Use IPI to get all target uvhubs to release resources held by * a given sending cpu number. */ -static void reset_with_ipi(struct bau_targ_hubmask *distribution, int sender) +static void reset_with_ipi(struct pnmask *distribution, struct bau_control *bcp) { - int uvhub; + int pnode; + int apnode; int maskbits; - cpumask_t mask; + int sender = bcp->cpu; + cpumask_t *mask = bcp->uvhub_master->cpumask; + struct bau_control *smaster = bcp->socket_master; struct reset_args reset_args; reset_args.sender = sender; - cpus_clear(mask); + cpus_clear(*mask); /* find a single cpu for each uvhub in this distribution mask */ - maskbits = sizeof(struct bau_targ_hubmask) * BITSPERBYTE; - for (uvhub = 0; uvhub < maskbits; uvhub++) { + maskbits = sizeof(struct pnmask) * BITSPERBYTE; + /* each bit is a pnode relative to the partition base pnode */ + for (pnode = 0; pnode < maskbits; pnode++) { int cpu; - if (!bau_uvhub_isset(uvhub, distribution)) + if (!bau_uvhub_isset(pnode, distribution)) continue; - /* find a cpu for this uvhub */ - cpu = uvhub_to_first_cpu(uvhub); - cpu_set(cpu, mask); + apnode = pnode + bcp->partition_base_pnode; + cpu = pnode_to_first_cpu(apnode, smaster); + cpu_set(cpu, *mask); } /* IPI all cpus; preemption is already disabled */ - smp_call_function_many(&mask, do_reset, (void *)&reset_args, 1); + smp_call_function_many(mask, do_reset, (void *)&reset_args, 1); return; } @@ -604,7 +612,7 @@ static void destination_plugged(struct bau_desc *bau_desc, quiesce_local_uvhub(hmaster); spin_lock(&hmaster->queue_lock); - reset_with_ipi(&bau_desc->distribution, bcp->cpu); + reset_with_ipi(&bau_desc->distribution, bcp); spin_unlock(&hmaster->queue_lock); end_uvhub_quiesce(hmaster); @@ -626,7 +634,7 @@ static void destination_timeout(struct bau_desc *bau_desc, quiesce_local_uvhub(hmaster); spin_lock(&hmaster->queue_lock); - reset_with_ipi(&bau_desc->distribution, bcp->cpu); + reset_with_ipi(&bau_desc->distribution, bcp); spin_unlock(&hmaster->queue_lock); end_uvhub_quiesce(hmaster); @@ -1334,9 +1342,10 @@ static ssize_t tunables_write(struct file *file, const char __user *user, instr[count] = '\0'; - bcp = &per_cpu(bau_control, smp_processor_id()); - + cpu = get_cpu(); + bcp = &per_cpu(bau_control, cpu); ret = parse_tunables_write(bcp, instr, count); + put_cpu(); if (ret) return ret; @@ -1687,6 +1696,16 @@ static void make_per_cpu_thp(struct bau_control *smaster) } /* + * Each uvhub is to get a local cpumask. + */ +static void make_per_hub_cpumask(struct bau_control *hmaster) +{ + int sz = sizeof(cpumask_t); + + hmaster->cpumask = kzalloc_node(sz, GFP_KERNEL, hmaster->osnode); +} + +/* * Initialize all the per_cpu information for the cpu's on a given socket, * given what has been gathered into the socket_desc struct. * And reports the chosen hub and socket masters back to the caller. @@ -1751,11 +1770,12 @@ static int __init summarize_uvhub_sockets(int nuvhubs, sdp = &bdp->socket[socket]; if (scan_sock(sdp, bdp, &smaster, &hmaster)) return 1; + make_per_cpu_thp(smaster); } socket++; socket_mask = (socket_mask >> 1); - make_per_cpu_thp(smaster); } + make_per_hub_cpumask(hmaster); } return 0; } @@ -1777,15 +1797,20 @@ static int __init init_per_cpu(int nuvhubs, int base_part_pnode) uvhub_mask = kzalloc((nuvhubs+7)/8, GFP_KERNEL); if (get_cpu_topology(base_part_pnode, uvhub_descs, uvhub_mask)) - return 1; + goto fail; if (summarize_uvhub_sockets(nuvhubs, uvhub_descs, uvhub_mask)) - return 1; + goto fail; kfree(uvhub_descs); kfree(uvhub_mask); init_per_cpu_tunables(); return 0; + +fail: + kfree(uvhub_descs); + kfree(uvhub_mask); + return 1; } /* |