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Sowmini Varadhan bb620c3d39 sparc: Make sparc64 use scalable lib/iommu-common.c functions

In iperf experiments running linux as the Tx side (TCP client) with
10 threads results in a severe performance drop when TSO is disabled,
indicating a weakness in the software that can be avoided by using
the scalable IOMMU arena DMA allocation.

Baseline numbers before this patch:
   with default settings (TSO enabled) :    9-9.5 Gbps
   Disable TSO using ethtool- drops badly:  2-3 Gbps.

After this patch, iperf client with 10 threads, can give a
throughput of at least 8.5 Gbps, even when TSO is disabled.

Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

2015-04-18 12:32:59 -07:00

.gitignore

…

apc.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

asm-offsets.c

[PATCH] sparc32: vm_area_struct access for old Sun SPARCs.

2013-07-10 13:56:10 -07:00

audit.c

sparc64: fix sparse warnings in compat_audit.c

2014-05-18 19:01:34 -07:00

auxio_32.c

sparc32: fix sparse warning in auxio_32.c

2014-05-18 19:01:27 -07:00

auxio_64.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

btext.c

sparc64: fix sparse warning in btext.c

2014-05-18 19:01:30 -07:00

central.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

cherrs.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

chmc.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

compat_audit.c

sparc64: fix sparse warnings in compat_audit.c

2014-05-18 19:01:34 -07:00

cpu.c

sparc64: correctly recognise M6 and M7 cpu type

2014-09-09 15:24:10 -07:00

cpumap.c

sparc64: support M6 and M7 for building CPU distribution map

2014-09-09 15:24:10 -07:00

cpumap.h

sparc: drop use of extern for prototypes in arch/sparc/*

2014-05-18 19:01:29 -07:00

devices.c

sparc32: drop tadpole specific code

2014-05-18 19:01:29 -07:00

dma.c

sparc: remove several unnecessary module.h include instances

2011-10-31 19:30:54 -04:00

ds.c

sparc64: Move request_irq() from ldc_bind() to ldc_alloc()

2014-09-16 18:31:31 -07:00

dtlb_miss.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

dtlb_prot.S

sparc64: Fix corrupted thread fault code.

2014-10-18 23:03:09 -04:00

ebus.c

sparc: delete non-required instances of include <linux/init.h>

2014-01-28 23:38:23 -08:00

entry.h

arch: sparc: kernel: traps_64.c: Remove some unused functions

2015-03-01 21:33:58 -08:00

entry.S

sparc32: Fix exit flag passed from traced sys_sigreturn

2013-07-31 19:10:04 -07:00

etrap_32.S

sparc32: introduce support for run-time patching for all shared assembler code

2012-05-27 23:52:49 -07:00

etrap_64.S

sparc64: clear syscall_noerror on the entry to syscall, not on the exit

2012-10-14 19:26:52 -04:00

fpu_traps.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

ftrace.c

ftrace: Do not pass data to ftrace_dyn_arch_init

2014-03-07 10:06:14 -05:00

getsetcc.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

head_32.S

sparc32: drop swapper_pg_dir

2012-07-26 16:46:15 -07:00

head_64.S

sparc64: Fix register corruption in top-most kernel stack frame during boot.

2014-10-24 09:52:49 -07:00

helpers.S

sparc64: Fix perf_arch_get_caller_regs().

2010-08-08 22:07:36 -07:00

hvapi.c

sparc: perf: Add support M7 processor

2015-03-19 18:54:49 -07:00

hvcalls.S

sparc: perf: Add support M7 processor

2015-03-19 18:54:49 -07:00

hvtramp.S

sparc64: Fix register corruption in top-most kernel stack frame during boot.

2014-10-24 09:52:49 -07:00

idprom.c

sparc: Clear out unused asm/machines.h values.

2012-05-11 20:45:18 -07:00

iommu_common.h

sparc: Make sparc64 use scalable lib/iommu-common.c functions

2015-04-18 12:32:59 -07:00

iommu.c

sparc: Make sparc64 use scalable lib/iommu-common.c functions

2015-04-18 12:32:59 -07:00

ioport.c

sparc32: dma_alloc_coherent must honour gfp flags

2014-09-10 14:03:28 -07:00

irq_32.c

sparc32: fix sparse warnings in irq_32.c

2014-04-29 01:12:25 -04:00

irq_64.c

sparc64: sparse irq

2014-10-05 16:53:40 -07:00

irq.h

sparc: drop use of extern for prototypes in arch/sparc/*

2014-05-18 19:01:29 -07:00

itlb_miss.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

ivec.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

jump_label.c

sparc: Fix even more fallout from system.h split.

2012-03-29 22:40:52 -07:00

kernel.h

sparc64: fix sparse warning in kgdb_64.c

2014-05-18 19:01:34 -07:00

kgdb_32.c

sparc: explicitly include sched.h to get task_thread_info declaration

2013-02-06 11:04:10 -08:00

kgdb_64.c

sparc64: fix sparse warning in kgdb_64.c

2014-05-18 19:01:34 -07:00

kprobes.c

sparc: Replace __get_cpu_var uses

2014-08-26 13:45:55 -04:00

kstack.h

sparc64: Run NMIs on the hardirq stack.

2010-04-14 02:04:29 -07:00

ktlb.S

sparc64: Adjust vmalloc region size based upon available virtual address bits.

2014-10-05 16:53:40 -07:00

ldc.c

sparc: Revert generic IOMMU allocator.

2015-04-18 12:31:25 -07:00

led.c

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

2010-03-30 22:02:32 +09:00

leon_kernel.c

sparc: leon: Fix race condition between leon_cycles_offset and timer_interrupt

2014-09-09 16:39:10 -07:00

leon_pci_grpci1.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

leon_pci_grpci2.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

leon_pci.c

PCI: Cleanup control flow

2015-03-19 10:17:22 -05:00

leon_pmc.c

sparc32: fix sparse warnings in leon_pmc.c

2014-04-29 01:12:27 -04:00

leon_smp.c

sparc32, leon: Align ccall_info to prevent unaligned traps on crosscall

2014-12-11 18:51:56 -08:00

Makefile

sparc32: drop tadpole specific code

2014-05-18 19:01:29 -07:00

mdesc.c

sparc: clarify __GFP_NOFAIL allocation

2015-04-14 16:49:04 -07:00

misctrap.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

module.c

mm: vmalloc: pass additional vm_flags to __vmalloc_node_range()

2015-02-13 21:21:42 -08:00

nmi.c

sparc: Replace __get_cpu_var uses

2014-08-26 13:45:55 -04:00

of_device_32.c

sparc32: rename sparc_irq_config to sparc_config

2012-04-15 10:28:49 -07:00

of_device_64.c

devicetree: add helper inline for retrieving a node's full name

2012-07-06 07:16:34 -05:00

of_device_common.c

sparc: fix sparse warnings in of_device_common.c

2014-04-29 01:12:27 -04:00

of_device_common.h

sparc: move of_device common code to of_device_common

2009-06-16 04:56:49 -07:00

pci_common.c

sparc: delete non-required instances of include <linux/init.h>

2014-01-28 23:38:23 -08:00

pci_fire.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

pci_impl.h

sparc: drop use of extern for prototypes in arch/sparc/*

2014-05-18 19:01:29 -07:00

pci_msi.c

PCI/MSI: Rename mask/unmask_msi_irq treewide

2014-11-23 13:01:45 +01:00

pci_psycho.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

pci_sabre.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

pci_schizo.c

Driver core patches for 3.19-rc1

2014-12-14 16:10:09 -08:00

pci_sun4v_asm.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

pci_sun4v.c

sparc: Make sparc64 use scalable lib/iommu-common.c functions

2015-04-18 12:32:59 -07:00

pci_sun4v.h

sparc: drop use of extern for prototypes in arch/sparc/*

2014-05-18 19:01:29 -07:00

pci.c

PCI changes for the v4.1 merge window:

2015-04-13 15:45:47 -07:00

pcic.c

PCI: Assign resources before drivers claim devices (pci_scan_bus())

2015-03-12 15:04:01 -05:00

pcr.c

sparc: perf: Add support M7 processor

2015-03-19 18:54:49 -07:00

perf_event.c

sparc: perf: Add support M7 processor

2015-03-19 18:54:49 -07:00

pmc.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

power.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

process_32.c

sparc32: fix sparse warning in auxio_32.c

2014-05-18 19:01:27 -07:00

process_64.c

sparc: Touch NMI watchdog when walking cpus and calling printk

2015-03-19 18:54:50 -07:00

prom_32.c

sparc: remove several unnecessary module.h include instances

2011-10-31 19:30:54 -04:00

prom_64.c

sparc64: fix sparse warning in prom_64.c

2014-05-18 19:01:31 -07:00

prom_common.c

of: Fix locking vs. interrupts

2013-06-13 22:12:14 +01:00

prom_irqtrans.c

sparc: Remove unnecessary semicolons

2011-06-07 16:06:34 -07:00

prom.h

sparc: drop use of extern for prototypes in arch/sparc/*

2014-05-18 19:01:29 -07:00

psycho_common.c

sparc: Remove unnecessary semicolons

2011-06-07 16:06:34 -07:00

psycho_common.h

sparc: drop use of extern for prototypes in arch/sparc/*

2014-05-18 19:01:29 -07:00

ptrace_32.c

sparc32: fix sparse warning in ptrace_32.c

2014-04-29 01:12:26 -04:00

ptrace_64.c

ARCH: AUDIT: audit_syscall_entry() should not require the arch

2014-09-23 16:21:26 -04:00

reboot.c

Disintegrate asm/system.h for Sparc

2012-03-28 18:30:03 +01:00

rtrap_32.S

sparc32: introduce support for run-time patching for all shared assembler code

2012-05-27 23:52:49 -07:00

rtrap_64.S

Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2013-11-19 10:40:00 -08:00

sbus.c

sparc: kernel/sbus.c: fix memory leakage

2013-01-21 14:33:00 -08:00

setup_32.c

sparc32: fix sparse warnings in setup_32.c

2014-04-29 01:12:25 -04:00

setup_64.c

sparc64: Fix register corruption in top-most kernel stack frame during boot.

2014-10-24 09:52:49 -07:00

signal32.c

all arches, signal: move restart_block to struct task_struct

2015-02-12 18:54:12 -08:00

signal_32.c

all arches, signal: move restart_block to struct task_struct

2015-02-12 18:54:12 -08:00

signal_64.c

all arches, signal: move restart_block to struct task_struct

2015-02-12 18:54:12 -08:00

sigutil_32.c

Disintegrate asm/system.h for Sparc

2012-03-28 18:30:03 +01:00

sigutil_64.c

Disintegrate asm/system.h for Sparc

2012-03-28 18:30:03 +01:00

sigutil.h

sparc: Allow handling signals when stack is corrupted.

2011-08-20 17:14:54 -07:00

smp_32.c

sparc: fix decimal printf format specifiers prefixed with 0x

2014-08-06 14:41:10 -07:00

smp_64.c

sparc64: fatal trap should stop all cpus

2015-03-01 21:42:57 -08:00

sparc_ksyms_32.c

sparc: delete non-required instances of include <linux/init.h>

2014-01-28 23:38:23 -08:00

sparc_ksyms_64.c

sparc: delete non-required instances of include <linux/init.h>

2014-01-28 23:38:23 -08:00

spiterrs.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

sstate.c

sparc: Set reboot-cmd using reboot data hypervisor call if available.

2011-08-02 21:28:52 -07:00

stacktrace.c

sparc: move symbol exporters to use export.h not module.h

2011-10-31 19:30:53 -04:00

starfire.c

arch: sparc: kernel: starfire.c: Remove unused function

2015-03-01 21:33:58 -08:00

sun4d_irq.c

sparc32: fix sparse warnings in sun4d_irq.c

2014-04-29 01:12:25 -04:00

sun4d_smp.c

sparc: Replace __get_cpu_var uses

2014-08-26 13:45:55 -04:00

sun4m_irq.c

sun4M: add include of slab.h for kzalloc

2014-02-12 16:10:45 -05:00

sun4m_smp.c

sparc: delete __cpuinit/__CPUINIT usage from all users

2013-07-14 19:36:52 -04:00

sun4v_ivec.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

sun4v_tlb_miss.S

sparc64: sun4v TLB error power off events

2014-09-16 17:46:44 -07:00

sys32.S

sparc: Hook up renameat2 syscall.

2014-07-21 22:27:56 -07:00

sys_sparc32.c

sparc64: fix sparse warnings in sys_sparc32.c

2014-05-18 19:01:31 -07:00

sys_sparc_32.c

sparc32: fix sparse warnings in sys_sparc_32.c

2014-05-18 19:01:28 -07:00

sys_sparc_64.c

sparc: semtimedop() unreachable due to comparison error

2015-03-03 14:05:48 -08:00

syscalls.S

sparc: hook up execveat system call

2014-12-13 12:42:51 -08:00

sysfs.c

sparc64: fix format string mismatch in arch/sparc/kernel/sysfs.c

2014-05-21 12:54:42 -07:00

systbls_32.S

sparc: hook up execveat system call

2014-12-13 12:42:51 -08:00

systbls_64.S

sparc: hook up execveat system call

2014-12-13 12:42:51 -08:00

systbls.h

sparc64: fix sparse warnings in sys_sparc32.c

2014-05-18 19:01:31 -07:00

time_32.c

clocksource, sparc32: Convert to using clocksource_register_hz()

2015-03-13 08:07:07 +01:00

time_64.c

sparc: kernel: drop owner assignment from platform_drivers

2014-10-20 16:20:15 +02:00

trampoline_32.S

sparc: delete non-required instances of include <linux/init.h>

2014-01-28 23:38:23 -08:00

trampoline_64.S

sparc64: Fix register corruption in top-most kernel stack frame during boot.

2014-10-24 09:52:49 -07:00

traps_32.c

sparc: Remove signal translation and exec_domain

2015-04-12 21:03:21 +02:00

traps_64.c

sparc: Remove signal translation and exec_domain

2015-04-12 21:03:21 +02:00

tsb.S

sparc64: Fix corrupted thread fault code.

2014-10-18 23:03:09 -04:00

ttable_32.S

sparc32: move trap table to a separate file

2012-05-19 23:27:25 -07:00

ttable_64.S

sparc64: renamed ttable.S to ttable_64.S

2012-05-19 23:26:41 -07:00

una_asm_32.S

sparc32: unaligned memory access (MNA) trap handler bug

2011-02-01 12:39:59 -08:00

una_asm_64.S

sparc: Fix .size directive for do_int_load

2011-03-16 18:19:15 -07:00

unaligned_32.c

sparc: use %s for unaligned panic

2014-07-21 21:37:06 -07:00

unaligned_64.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next

2014-06-19 07:50:07 -10:00

utrap.S

sparc,sparc64: unify kernel/

2008-12-04 09:17:21 -08:00

vio.c

sparc64: Add vio_set_intr() to enable/disable Rx interrupts

2014-09-30 14:40:45 -07:00

viohs.c

sparc: VIO protocol version 1.6

2014-09-30 14:17:08 -07:00

visemul.c

sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads.

2012-10-26 15:18:37 -07:00

vmlinux.lds.S

sparc64: Kill unnecessary tables and increase MAX_BANKS.

2014-10-05 16:53:40 -07:00

windows.c

sparc32: fix sparse warnings in windows.c

2014-04-29 01:12:25 -04:00

winfixup.S

sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads.

2012-10-26 15:18:37 -07:00

wof.S

sparc32: introduce support for run-time patching for all shared assembler code

2012-05-27 23:52:49 -07:00

wuf.S

sparc32: introduce support for run-time patching for all shared assembler code

2012-05-27 23:52:49 -07:00