Laurentiu Tudor 7c48005036 powerpc/booke64: wrap tlb lock and search in htw miss with FTR_SMT ... Virtualized environments may expose a e6500 dual-threaded core as two single-threaded e6500 cores. Take advantage of this and get rid of the tlb lock and the trap-causing tlbsx in the htw miss handler by guarding with CPU_FTR_SMT, as it's already being done in the bolted tlb1 miss handler. As seen in the results below, measurements done with lmbench random memory access latency test running under Freescale's Embedded Hypervisor, there is a ~34% improvement. Memory latencies in nanoseconds - smaller is better (WARNING - may not be correct, check graphs) ---------------------------------------------------- Host Mhz L1 $ L2 $ Main mem Rand mem --------- --- ---- ---- -------- -------- smt 1665 1.8020 13.2 83.0 1149.7 nosmt 1665 1.8020 13.2 83.0 758.1 Signed-off-by: Laurentiu Tudor <Laurentiu.Tudor@freescale.com> Cc: Scott Wood <scottwood@freescale.com> [scottwood@freescale.com: commit message tweak] Signed-off-by: Scott Wood <scottwood@freescale.com>		2014-06-20 18:48:34 -05:00
..
40x_mmu.c	memblock: Remove rmo_size, burry it in arch/powerpc where it belongs	2010-08-05 12:56:08 +10:00
44x_mmu.c	powerpc: Delete __cpuinit usage from all users	2013-07-01 11:10:36 +10:00
dma-noncoherent.c	mm/arch: use __free_reserved_page() to simplify the code	2013-11-13 12:09:03 +09:00
fault.c	arch: mm: pass userspace fault flag to generic fault handler	2013-09-12 15:38:01 -07:00
fsl_booke_mmu.c	powerpc/e6500: TLB miss handler with hardware tablewalk support	2014-01-09 17:52:19 -06:00
gup.c	powerpc/mm: NUMA pte should be handled via slow path in get_user_pages_fast()	2014-04-09 12:53:03 +10:00
hash_low_32.S	powerpc: Use CURRENT_THREAD_INFO instead of open coded assembly	2012-07-11 14:18:22 +10:00
hash_low_64.S	powerpc: Fix branch patching code for ABIv2	2014-04-23 10:05:22 +10:00
hash_native_64.c	powerpc/mm: Fix tlbie to add AVAL fields for 64K pages	2014-04-28 13:11:24 +10:00
hash_utils_64.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
highmem.c	mm: fix race in kunmap_atomic()	2010-10-27 18:03:05 -07:00
hugepage-hash64.c	powerpc/mm: Free up _PAGE_COHERENCE for numa fault use later	2013-12-09 11:40:28 +11:00
hugetlbpage-book3e.c	powerpc/fsl-book3e-64: Use paca for hugetlb TLB1 entry selection	2014-01-09 17:52:20 -06:00
hugetlbpage-hash64.c	powerpc/mm: Free up _PAGE_COHERENCE for numa fault use later	2013-12-09 11:40:28 +11:00
hugetlbpage.c	hugetlb: restrict hugepage_migration_support() to x86_64	2014-06-04 16:53:51 -07:00
icswx.c	powerpc: Fix typo "CONFIG_ICSWX_PID"	2013-04-18 13:03:54 +10:00
icswx.h	powerpc/icswx: Fix race condition with IPI setting ACOP	2012-03-07 17:06:09 +11:00
icswx_pid.c	powerpc: Split ICSWX ACOP and PID processing	2011-11-25 14:11:27 +11:00
init_32.c	powerpc/8xx: Fixing memory init issue with CONFIG_PIN_TLB	2013-10-28 21:11:22 -05:00
init_64.c	powerpc: Prepare to support kernel handling of IOMMU map/unmap	2013-10-11 17:24:39 +11:00
Makefile	powerpc/THP: Add code to handle HPTE faults for hugepages	2013-06-21 16:01:56 +10:00
mem.c	powerpc/pseries: Use remove_memory() to remove memory	2014-03-07 15:53:13 +11:00
mmap.c	mm: remove free_area_cache	2013-07-10 18:11:34 -07:00
mmu_context_hash32.c	powerpc: include export.h for files using EXPORT_SYMBOL/THIS_MODULE	2011-10-31 19:30:38 -04:00
mmu_context_hash64.c	powerpc: Reduce PTE table memory wastage	2013-04-30 16:00:07 +10:00
mmu_context_nohash.c	powerpc: Delete __cpuinit usage from all users	2013-07-01 11:10:36 +10:00
mmu_decl.h	powerpc/fsl_booke: smp support for booting a relocatable kernel above 64M	2014-01-09 17:52:18 -06:00
numa.c	powerpc/mm: fix ".__node_distance" undefined	2014-04-18 16:40:08 -07:00
pgtable.c	powerpc: Delete non-required instances of include <linux/init.h>	2014-01-15 13:46:44 +11:00
pgtable_32.c	powerpc: add barrier after writing kernel PTE	2014-01-09 17:52:19 -06:00
pgtable_64.c	powerpc/mm: Make sure a local_irq_disable prevent a parallel THP split	2014-03-24 09:48:34 +11:00
ppc_mmu_32.c	memblock: Remove rmo_size, burry it in arch/powerpc where it belongs	2010-08-05 12:56:08 +10:00
slb.c	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc	2014-06-10 18:54:22 -07:00
slb_low.S	Merge remote-tracking branch 'anton/abiv2' into next	2014-05-05 20:57:12 +10:00
slice.c	powerpc/mm: Fix mmap errno when MAP_FIXED is set and mapping exceeds the allowed address space	2014-01-29 17:02:25 +11:00
stab.c	powerpc/mm: Remove uses of abs_to_virt() and virt_to_abs()	2012-09-05 15:19:31 +10:00
subpage-prot.c	powerpc/mm: Add new "set" flag argument to pte/pmd update function	2014-02-17 11:19:35 +11:00
tlb_hash32.c	powerpc: include export.h for files using EXPORT_SYMBOL/THIS_MODULE	2011-10-31 19:30:38 -04:00
tlb_hash64.c	powerpc: Delete non-required instances of include <linux/init.h>	2014-01-15 13:46:44 +11:00
tlb_low_64e.S	powerpc/booke64: wrap tlb lock and search in htw miss with FTR_SMT	2014-06-20 18:48:34 -05:00
tlb_nohash.c	powerpc/fsl-booke64: Set vmemmap_psize to 4K	2014-05-22 18:08:12 -05:00
tlb_nohash_low.S	powerpc/fsl_booke: smp support for booting a relocatable kernel above 64M	2014-01-09 17:52:18 -06:00