diff options
| author | Dean Roe <roe@sgi.com> | 2005-10-27 15:41:04 -0500 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2005-10-27 14:44:58 -0700 |
| commit | c1902aae322952f8726469a6657df7b9d5c794fe (patch) | |
| tree | 5c78f21c19597b64faf06e0faee7726ae01f7bbb /include | |
| parent | 72ab373a5688a78cbdaf3bf96012e597d5399bb7 (diff) | |
| download | blackbird-op-linux-c1902aae322952f8726469a6657df7b9d5c794fe.tar.gz blackbird-op-linux-c1902aae322952f8726469a6657df7b9d5c794fe.zip | |
[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 <roe@sgi.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-ia64/machvec.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-ia64/machvec.h b/include/asm-ia64/machvec.h index 79e89a7db566..522c7f5ba8ce 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 *); |
