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linux/arch/sparc/include/asm
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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
..
agp.h agp: kill phys_to_gart() and gart_to_phys() 2009-08-03 09:05:00 +01:00
apb.h
asm-offsets.h kbuild: move asm-offsets.h to include/generated 2009-12-12 13:08:14 +01:00
asm.h sparc: Add asm/asm.h 2008-12-09 00:50:13 -08:00
asmmacro.h sparc32: add support for run-time patching of leon/sun single instructions 2012-05-27 23:52:43 -07:00
atomic_32.h sparc32: Implement xchg and atomic_xchg using ATOMIC_HASH locks 2014-11-07 12:51:44 -08:00
atomic_64.h locking,arch: Use ACCESS_ONCE() instead of cast to volatile in atomic_read() 2014-10-03 06:06:23 +02:00
atomic.h
auxio_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
auxio_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
auxio.h sparc32: fix sparse warnings in auxio_32.c 2014-04-29 01:12:26 -04:00
backoff.h sparc64: Improvde documentation and readability of atomic backoff code. 2012-10-28 13:04:47 -07:00
barrier_32.h arch: Clean up asm/barrier.h implementations using asm-generic/barrier.h 2014-01-12 10:37:15 +01:00
barrier_64.h arch: Add lightweight memory barriers dma_rmb() and dma_wmb() 2014-12-11 21:15:06 -05:00
barrier.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
bbc.h
bitext.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
bitops_32.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2014-06-19 07:50:07 -10:00
bitops_64.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2014-06-19 07:50:07 -10:00
bitops.h
btext.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
bug.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
bugs.h sparc64: Implement SSTATE purely using notifiers and initcalls. 2008-09-02 00:49:38 -07:00
cache.h sparc32: Remove completely unused code from asm/cache.h 2012-05-19 21:15:37 -07:00
cacheflush_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
cacheflush_64.h mm/debug_pagealloc: fix build failure on ppc and some other archs 2015-02-05 13:35:30 -08:00
cacheflush.h sparc32: use flushi when run-time patching in per_cpu_patch 2012-05-20 13:33:36 -07:00
cachetlb_32.h sparc32: Move cache and TLB flushes over to method ops. 2012-05-13 20:49:31 -07:00
chafsr.h
checksum_32.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2014-06-19 07:50:07 -10:00
checksum_64.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2014-06-19 07:50:07 -10:00
checksum.h
chmctrl.h
clock.h
cmpxchg_32.h sparc32: Implement xchg and atomic_xchg using ATOMIC_HASH locks 2014-11-07 12:51:44 -08:00
cmpxchg_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
cmpxchg.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
compat_signal.h sparc: switch to generic sigaltstack 2013-02-03 18:16:17 -05:00
compat.h sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads. 2012-10-26 15:18:37 -07:00
contregs.h sparc32: Remove sun4{,c} control reg definitions from contregs.h. 2012-05-11 21:29:17 -07:00
cpu_type.h sparc32: Remove sun4 and sun4c from enum sparc_cpu. 2012-05-12 00:23:23 -07:00
cpudata_32.h sparc: Replace __get_cpu_var uses 2014-08-26 13:45:55 -04:00
cpudata_64.h sparc: Replace __get_cpu_var uses 2014-08-26 13:45:55 -04:00
cpudata.h sparc: fix sparse warnings in cpu.c 2014-04-29 01:12:25 -04:00
current.h
dcr.h
dcu.h
delay_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
delay_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
delay.h
device.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
dma-mapping.h sparc: Add NOP dma_cache_sync() implementation. 2014-11-26 13:36:41 -08:00
dma.h sparc32: Convert mmu_* interfaces from btfixup to method ops. 2012-05-13 13:57:05 -07:00
ebus_dma.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
ecc.h
eeprom.h
elf_32.h default SET_PERSONALITY() in linux/elf.h 2013-02-26 02:46:08 -05:00
elf_64.h sparc64: Add detection for features new in SPARC-T4. 2012-08-18 23:02:36 -07:00
elf.h
estate.h
fb.h sparc: Really fix "console=" for serial consoles. 2010-08-16 12:26:09 -07:00
fbio.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
fhc.h sparc64: Rewrite central driver. 2008-08-31 20:56:15 -07:00
floppy_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
floppy_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
floppy.h
fpumacro.h
ftrace.h sparc64: fix sparse warning in ftrace.c 2014-05-18 19:01:35 -07:00
futex_32.h
futex_64.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
futex.h
gpio.h gpiolib/arches: Centralise bolierplate asm/gpio.h 2012-05-11 18:00:14 -06:00
hardirq_32.h hardirq: Make hardirq bits generic 2013-11-13 20:21:46 +01:00
hardirq_64.h hardirq: Make hardirq bits generic 2013-11-13 20:21:46 +01:00
hardirq.h
head_32.h sparc: Consistently use 'wr' and 'rd' instructions for ASRs. 2013-04-06 17:51:48 -04:00
head_64.h
head.h
hibernate.h sparc64: Hibernation support 2013-03-20 11:06:54 -07:00
highmem.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
hugetlb.h mm/hugetlb: add more arch-defined huge_pte functions 2013-04-29 15:54:33 -07:00
hvtramp.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
hw_irq.h
hypervisor.h sparc: perf: Add support M7 processor 2015-03-19 18:54:49 -07:00
ide.h
idprom.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
intr_queue.h
io_32.h sparc: io: implement dummy relaxed accessor macros for writes 2014-10-20 18:49:18 +01:00
io_64.h sparc: io_64.h: Replace io function-link macros 2015-03-01 21:48:22 -08:00
io-unit.h sparc32: fix sparse warning in io-unit.c 2014-05-18 19:01:26 -07:00
io.h sparc: io: remove duplicate relaxed accessors on sparc32 2014-11-19 10:19:45 +01:00
ioctls.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
iommu_32.h sparc32: fix sparse warning in iommu.c 2014-05-18 19:01:26 -07:00
iommu_64.h sparc: Make sparc64 use scalable lib/iommu-common.c functions 2015-04-18 12:32:59 -07:00
iommu.h
irq_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
irq_64.h sparc64: sparse irq 2014-10-05 16:53:40 -07:00
irq.h
irqflags_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
irqflags_64.h sparc/irqs: Do not trace arch_local_{*,irq_*} functions 2011-07-06 08:00:29 -07:00
irqflags.h
jump_label.h jump_label: Allow asm/jump_label.h to be included in assembly 2015-04-09 09:40:23 +02:00
Kbuild net, lib: kill arch_fast_hash library bits 2014-12-10 15:17:46 -05:00
kdebug_32.h sparc32: kernel/trace/trace.c wants DIE_OOPS 2008-11-01 21:44:01 -07:00
kdebug_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
kdebug.h
kgdb.h sparc64: fix sparse warning in kgdb_64.c 2014-05-18 19:01:34 -07:00
kmap_types.h kmap_types: make most arches use generic header file 2009-06-16 19:47:51 -07:00
kprobes.h sparc64: fix sparse warning in kprobes.c 2014-05-18 19:01:34 -07:00
ldc.h sparc/ldc: create separate ldc_unbind from ldc_free 2014-12-11 18:52:45 -08:00
leon_amba.h sparc32, leon: Remove separate "ticker" timer for SMP 2013-06-19 02:10:29 -07:00
leon_pci.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
leon.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
lsu.h
machines.h sparc32: Trivial removal of sun4c references in comments. 2012-05-12 00:35:45 -07:00
mbus.h sparc32: Remove cypress cpu support. 2012-05-15 10:22:00 -07:00
mc146818rtc_32.h
mc146818rtc_64.h sparc64: Use generic CMOS driver. 2008-08-29 14:16:48 -07:00
mc146818rtc.h sparc32: fix sparse warnings in time_32.c 2014-05-18 19:01:27 -07:00
mdesc.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
memctrl.h sparc64: Add generic interface for registering a dimm printing handler. 2008-08-24 22:08:34 -07:00
mman.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
mmu_32.h sparc32: add irq + smp declarations to headers 2011-03-16 18:19:08 -07:00
mmu_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
mmu_context_32.h sparc32: centralize all mmu context handling in srmmu.c 2012-07-26 16:46:16 -07:00
mmu_context_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
mmu_context.h
mmu.h
mmzone.h Fix node_start/end_pfn() definition for mm/page_cgroup.c 2011-06-27 14:13:09 -07:00
msi.h
mxcc.h
nmi.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
ns87303.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
obio.h sparc32: move smp ipi to method ops 2012-05-14 14:05:07 -07:00
openprom.h sparc: Pass buffer pointer all the way down to prom_{get,put}char(). 2010-11-30 14:33:29 -08:00
oplib_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
oplib_64.h sparc64: Fix register corruption in top-most kernel stack frame during boot. 2014-10-24 09:52:49 -07:00
oplib.h
page_32.h sparc32: drop sparc_unmapped_base 2012-07-26 16:46:16 -07:00
page_64.h sparc64: Adjust vmalloc region size based upon available virtual address bits. 2014-10-05 16:53:40 -07:00
page.h sparc: move page_to_phys to page.h 2014-05-02 01:30:20 -04:00
parport.h sparc: include: asm: drop owner assignment from platform_drivers 2014-10-20 16:20:14 +02:00
pbm.h
pci_32.h PCI: Turn pcibios_penalize_isa_irq() into a weak function 2014-05-27 16:23:58 -06:00
pci_64.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next 2014-06-19 07:50:07 -10:00
pci.h pci-dma: add linux/pci-dma.h to linux/pci.h 2010-03-12 15:52:42 -08:00
pcic.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
pcr.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
percpu_32.h
percpu_64.h sparc64: Get rid of real_setup_per_cpu_areas(). 2009-06-16 04:56:23 -07:00
percpu.h
perf_event.h perf, arch: Cleanup perf-pmu init vs lockup-detector 2010-11-26 15:14:56 +01:00
pgalloc_32.h sparc32: fix sparse warnings in ioport.c 2014-04-29 01:12:25 -04:00
pgalloc_64.h sparc64: Switch to 4-level page tables. 2014-10-05 16:53:38 -07:00
pgalloc.h
pgtable_32.h mm: make FIRST_USER_ADDRESS unsigned long on all archs 2015-02-11 17:06:03 -08:00
pgtable_64.h mm: make FIRST_USER_ADDRESS unsigned long on all archs 2015-02-11 17:06:03 -08:00
pgtable.h
pgtsrmmu.h sparc: drop pte_file()-related helpers 2015-02-10 14:30:33 -08:00
pil.h sparc64: Reschedule KGDB capture to a software interrupt. 2009-03-18 23:51:57 -07:00
processor_32.h arch, locking: Ciao arch_mutex_cpu_relax() 2014-07-17 12:32:47 +02:00
processor_64.h arch, locking: Ciao arch_mutex_cpu_relax() 2014-07-17 12:32:47 +02:00
processor.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
prom.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
psr.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
ptrace.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
ross.h
rwsem.h rwsem: Move duplicate function prototypes to linux/rwsem.h 2011-01-27 12:30:39 +01:00
sbi.h
scratchpad.h
seccomp.h sparc: switch to using asm-generic for seccomp.h 2015-04-17 09:04:10 -04:00
sections.h sparc32: add support for run-time patching of leon/sun single instructions 2012-05-27 23:52:43 -07:00
setup.h sparc64: Fix register corruption in top-most kernel stack frame during boot. 2014-10-24 09:52:49 -07:00
sfafsr.h
sfp-machine_32.h sparc32: remove cast from output constraints in math asm statements 2014-05-18 19:01:28 -07:00
sfp-machine_64.h
sfp-machine.h
shmparam_32.h sparc32: Remove sun4 and sun4c from enum sparc_cpu. 2012-05-12 00:23:23 -07:00
shmparam_64.h
shmparam.h
sigcontext.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
siginfo.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
signal.h consolidate kernel-side struct sigaction declarations 2013-02-03 15:09:22 -05:00
smp_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
smp_64.h sparc64: fix sparse warnings in smp_64.c 2014-05-18 19:01:31 -07:00
smp.h
sparsemem.h sparc64: Fix inconsistent max-physical-address defines. 2013-11-12 15:22:34 -08:00
spinlock_32.h sparc32: unbreak arch_write_unlock() 2011-08-15 14:35:19 -07:00
spinlock_64.h sparc64: remove unnecessary macros from spinlock_64.h 2011-08-15 14:35:18 -07:00
spinlock_types.h locking: Convert raw_rwlock to arch_rwlock 2009-12-14 23:55:32 +01:00
spinlock.h
spitfire.h sparc64: correctly recognise M6 and M7 cpu type 2014-09-09 15:24:10 -07:00
stacktrace.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
starfire.h arch: sparc: kernel: starfire.c: Remove unused function 2015-03-01 21:33:58 -08:00
string_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
string_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
string.h
sunbpp.h
swift.h
switch_to_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
switch_to_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
switch_to.h Disintegrate asm/system.h for Sparc 2012-03-28 18:30:03 +01:00
syscall.h sparc: implement is_32bit_task 2014-09-23 16:21:27 -04:00
syscalls.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
termbits.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
termios.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
thread_info_32.h sparc: Fix execution domain removal 2015-04-12 21:03:31 +02:00
thread_info_64.h sparc: Remove signal translation and exec_domain 2015-04-12 21:03:21 +02:00
thread_info.h
timer_32.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
timer_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
timer.h
timex_32.h sparc32: generic clockevent support 2012-04-15 10:28:50 -07:00
timex_64.h
timex.h
tlb_32.h
tlb_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
tlb.h
tlbflush_32.h sparc32: Move cache and TLB flushes over to method ops. 2012-05-13 20:49:31 -07:00
tlbflush_64.h sparc64: Guard against flushing openfirmware mappings. 2014-08-04 20:16:00 -07:00
tlbflush.h
topology_32.h
topology_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
topology.h
trap_block.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
traps.h UAPI: (Scripted) Disintegrate arch/sparc/include/asm 2012-10-09 09:47:43 +01:00
tsb.h sparc64: Fix physical memory management regressions with large max_phys_bits. 2014-10-05 16:53:39 -07:00
tsunami.h
ttable.h sparc64: Make montmul/montsqr/mpmul usable in 32-bit threads. 2012-10-26 15:18:37 -07:00
turbosparc.h
uaccess_32.h sparc32: nocheck uaccess coding style tweaks 2015-01-13 15:24:14 +02:00
uaccess_64.h sparc64: nocheck uaccess coding style tweaks 2015-01-13 15:24:12 +02:00
uaccess.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
unaligned.h
unistd.h sys_sgetmask/sys_ssetmask: add CONFIG_SGETMASK_SYSCALL 2014-06-04 16:54:14 -07:00
upa.h
user.h
vaddrs.h sparc32: drop fixmap.h 2012-07-26 16:46:16 -07:00
vga.h BUG: headers with BUG/BUG_ON etc. need linux/bug.h 2012-03-04 17:54:34 -05:00
viking.h
vio.h vio: create routines for inc,dec vio dring indexes 2014-12-11 18:52:45 -08:00
visasm.h sparc64: Fix FPU register corruption with AES crypto offload. 2014-10-14 19:37:58 -07:00
winmacro.h sparc32: Implement hard_smp_processor_id() via instruction patching. 2012-05-14 13:31:38 -07:00
xor_32.h
xor_64.h sparc: drop use of extern for prototypes in arch/sparc/include/asm 2014-05-18 19:01:29 -07:00
xor.h