From c1902aae322952f8726469a6657df7b9d5c794fe Mon Sep 17 00:00:00 2001 From: Dean Roe Date: Thu, 27 Oct 2005 15:41:04 -0500 Subject: [IA64] - Avoid slow TLB purges on SGI Altix systems flush_tlb_all() can be a scaling issue on large SGI Altix systems since it uses the global call_lock and always executes on all cpus. When a process enters flush_tlb_range() to purge TLBs for another process, it is possible to avoid flush_tlb_all() and instead allow sn2_global_tlb_purge() to purge TLBs only where necessary. This patch modifies flush_tlb_range() so that this case can be handled by platform TLB purge functions and updates ia64_global_tlb_purge() accordingly. sn2_global_tlb_purge() now calculates the region register value from the mm argument introduced with this patch. Signed-off-by: Dean Roe Signed-off-by: Tony Luck --- include/asm-ia64/machvec.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/asm-ia64/machvec.h b/include/asm-ia64/machvec.h index 79e89a7db56..522c7f5ba8c 100644 --- a/include/asm-ia64/machvec.h +++ b/include/asm-ia64/machvec.h @@ -26,7 +26,7 @@ typedef void ia64_mv_cpu_init_t (void); typedef void ia64_mv_irq_init_t (void); typedef void ia64_mv_send_ipi_t (int, int, int, int); typedef void ia64_mv_timer_interrupt_t (int, void *, struct pt_regs *); -typedef void ia64_mv_global_tlb_purge_t (unsigned long, unsigned long, unsigned long); +typedef void ia64_mv_global_tlb_purge_t (struct mm_struct *, unsigned long, unsigned long, unsigned long); typedef void ia64_mv_tlb_migrate_finish_t (struct mm_struct *); typedef unsigned int ia64_mv_local_vector_to_irq (u8); typedef char *ia64_mv_pci_get_legacy_mem_t (struct pci_bus *); -- cgit