#include <linux/kernel.h>
#include <asm/mmu_context.h>
+#include <asm/uv/uv.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
#include <asm/uv/uv_bau.h>
-#include <asm/genapic.h>
+#include <asm/apic.h>
#include <asm/idle.h>
#include <asm/tsc.h>
#include <asm/irq_vectors.h>
-#include <mach_apic.h>
-
static struct bau_control **uv_bau_table_bases __read_mostly;
static int uv_bau_retry_limit __read_mostly;
*
* Send a broadcast and wait for a broadcast message to complete.
*
- * The cpumaskp mask contains the cpus the broadcast was sent to.
+ * The flush_mask contains the cpus the broadcast was sent to.
*
- * Returns 1 if all remote flushing was done. The mask is zeroed.
- * Returns 0 if some remote flushing remains to be done. The mask is left
- * unchanged.
+ * Returns NULL if all remote flushing was done. The mask is zeroed.
+ * Returns @flush_mask if some remote flushing remains to be done. The
+ * mask will have some bits still set.
*/
-int uv_flush_send_and_wait(int cpu, int this_blade, struct bau_desc *bau_desc,
- cpumask_t *cpumaskp)
+const struct cpumask *uv_flush_send_and_wait(int cpu, int this_blade,
+ struct bau_desc *bau_desc,
+ struct cpumask *flush_mask)
{
int completion_status = 0;
int right_shift;
* the cpu's, all of which are still in the mask.
*/
__get_cpu_var(ptcstats).ptc_i++;
- return 0;
+ return flush_mask;
}
/*
* Success, so clear the remote cpu's from the mask so we don't
* use the IPI method of shootdown on them.
*/
- for_each_cpu_mask(bit, *cpumaskp) {
+ for_each_cpu(bit, flush_mask) {
blade = uv_cpu_to_blade_id(bit);
if (blade == this_blade)
continue;
- cpu_clear(bit, *cpumaskp);
+ cpumask_clear_cpu(bit, flush_mask);
}
- if (!cpus_empty(*cpumaskp))
- return 0;
- return 1;
+ if (!cpumask_empty(flush_mask))
+ return flush_mask;
+ return NULL;
}
/**
* uv_flush_tlb_others - globally purge translation cache of a virtual
* address or all TLB's
- * @cpumaskp: mask of all cpu's in which the address is to be removed
+ * @cpumask: mask of all cpu's in which the address is to be removed
* @mm: mm_struct containing virtual address range
* @va: virtual address to be removed (or TLB_FLUSH_ALL for all TLB's on cpu)
+ * @cpu: the current cpu
*
* This is the entry point for initiating any UV global TLB shootdown.
*
* Purges the translation caches of all specified processors of the given
* virtual address, or purges all TLB's on specified processors.
*
- * The caller has derived the cpumaskp from the mm_struct and has subtracted
- * the local cpu from the mask. This function is called only if there
- * are bits set in the mask. (e.g. flush_tlb_page())
+ * The caller has derived the cpumask from the mm_struct. This function
+ * is called only if there are bits set in the mask. (e.g. flush_tlb_page())
*
- * The cpumaskp is converted into a nodemask of the nodes containing
+ * The cpumask is converted into a nodemask of the nodes containing
* the cpus.
*
- * Returns 1 if all remote flushing was done.
- * Returns 0 if some remote flushing remains to be done.
+ * Note that this function should be called with preemption disabled.
+ *
+ * Returns NULL if all remote flushing was done.
+ * Returns pointer to cpumask if some remote flushing remains to be
+ * done. The returned pointer is valid till preemption is re-enabled.
*/
-int uv_flush_tlb_others(cpumask_t *cpumaskp, struct mm_struct *mm,
- unsigned long va)
+const struct cpumask *uv_flush_tlb_others(const struct cpumask *cpumask,
+ struct mm_struct *mm,
+ unsigned long va, unsigned int cpu)
{
+ static DEFINE_PER_CPU(cpumask_t, flush_tlb_mask);
+ struct cpumask *flush_mask = &__get_cpu_var(flush_tlb_mask);
int i;
int bit;
int blade;
- int cpu;
+ int uv_cpu;
int this_blade;
int locals = 0;
struct bau_desc *bau_desc;
- cpu = uv_blade_processor_id();
+ cpumask_andnot(flush_mask, cpumask, cpumask_of(cpu));
+
+ uv_cpu = uv_blade_processor_id();
this_blade = uv_numa_blade_id();
bau_desc = __get_cpu_var(bau_control).descriptor_base;
- bau_desc += UV_ITEMS_PER_DESCRIPTOR * cpu;
+ bau_desc += UV_ITEMS_PER_DESCRIPTOR * uv_cpu;
bau_nodes_clear(&bau_desc->distribution, UV_DISTRIBUTION_SIZE);
i = 0;
- for_each_cpu_mask(bit, *cpumaskp) {
+ for_each_cpu(bit, flush_mask) {
blade = uv_cpu_to_blade_id(bit);
BUG_ON(blade > (UV_DISTRIBUTION_SIZE - 1));
if (blade == this_blade) {
* no off_node flushing; return status for local node
*/
if (locals)
- return 0;
+ return flush_mask;
else
- return 1;
+ return NULL;
}
__get_cpu_var(ptcstats).requestor++;
__get_cpu_var(ptcstats).ntargeted += i;
bau_desc->payload.address = va;
- bau_desc->payload.sending_cpu = smp_processor_id();
+ bau_desc->payload.sending_cpu = cpu;
- return uv_flush_send_and_wait(cpu, this_blade, bau_desc, cpumaskp);
+ return uv_flush_send_and_wait(uv_cpu, this_blade, bau_desc, flush_mask);
}
/*
int node;
int nblades;
int last_blade;
- int cur_cpu = 0;
+ int cur_cpu;
if (!is_uv_system())
return 0;
uv_mmask = (1UL << uv_hub_info->n_val) - 1;
nblades = 0;
last_blade = -1;
+ cur_cpu = 0;
for_each_online_node(node) {
blade = uv_node_to_blade_id(node);
if (blade == last_blade)
git.openpandora.org / pandora-kernel.git / blobdiff