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linux/arch/powerpc/kernel
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Anton Blanchard 0e4bc95d87 powerpc/iommu: Reduce spinlock coverage in iommu_alloc and iommu_free 
We currently hold the IOMMU spinlock around tce_build and tce_flush.
This causes our spinlock hold times to be much higher than required
and can impact multiqueue adapters.

This patch moves tce_build and tce_flush outside of the lock in
iommu_alloc, and tce_flush outside of the lock in iommu_free.

Some performance numbers were obtained with a Chelsio T3 adapter on
two POWER7 boxes, running a 100 session TCP round robin test.

Performance improved 32% with this patch applied.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2012-07-03 14:14:47 +10:00
..
vdso32
Fix common misspellings
2011-03-31 11:26:23 -03:00
vdso64
Fix common misspellings
2011-03-31 11:26:23 -03:00
.gitignore
…
align.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
asm-offsets.c
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2012-05-24 16:17:30 -07:00
audit.c
…
btext.c
powerpc: various straight conversions from module.h --> export.h
2011-10-31 19:30:44 -04:00
cacheinfo.c
cpu: convert 'cpu' and 'machinecheck' sysdev_class to a regular subsystem
2011-12-21 14:29:42 -08:00
cacheinfo.h
…
clock.c
powerpc: various straight conversions from module.h --> export.h
2011-10-31 19:30:44 -04:00
compat_audit.c
…
cpu_setup_6xx.S
powerpc: Fix some 6xx/7xxx CPU setup functions
2011-02-07 12:57:11 +11:00
cpu_setup_44x.S
…
cpu_setup_a2.S
powerpc/book3e: Add ICSWX/ACOP support to Book3e cores like A2
2011-11-25 14:11:28 +11:00
cpu_setup_fsl_booke.S
KVM: PPC: e500mc support
2012-04-08 12:54:33 +03:00
cpu_setup_pa6t.S
…
cpu_setup_power7.S
powerpc, KVM: Split HVMODE_206 cpu feature bit into separate HV and architecture bits
2011-07-12 13:16:58 +03:00
cpu_setup_ppc970.S
powerpc, KVM: Split HVMODE_206 cpu feature bit into separate HV and architecture bits
2011-07-12 13:16:58 +03:00
cputable.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
crash_dump.c
powerpc: Rename mapping based RELOCATABLE to DYNAMIC_MEMSTART for BookE
2011-12-20 10:20:19 -05:00
crash.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
dbell.c
powerpc: Rework lazy-interrupt handling
2012-03-09 13:25:06 +11:00
dma-iommu.c
PowerPC: adapt for dma_map_ops changes
2012-03-28 16:36:33 +02:00
dma-swiotlb.c
PowerPC: adapt for dma_map_ops changes
2012-03-28 16:36:33 +02:00
dma.c
PowerPC: adapt for dma_map_ops changes
2012-03-28 16:36:33 +02:00
entry_32.S
powerpc: Fix page fault with lockdep regression
2012-04-10 17:21:35 +10:00
entry_64.S
powerpc: Clear RI and EE at the same time in system call exit
2012-07-03 14:14:43 +10:00
exceptions-64e.S
powerpc: Rework lazy-interrupt handling
2012-03-09 13:25:06 +11:00
exceptions-64s.S
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2012-05-24 16:17:30 -07:00
fadump.c
powerpc: Fix fallout from system.h split up
2012-04-02 14:00:03 +10:00
firmware.c
powerpc: fix implicit use of cache.h in kernel/firmware.c
2011-10-31 19:30:41 -04:00
fpu.S
…
fsl_booke_entry_mapping.S
…
ftrace.c
powerpc/ftrace: Use patch_instruction instead of probe_kernel_write()
2012-07-03 14:14:39 +10:00
head_8xx.S
powerpc: Call do_page_fault() with interrupts off
2012-03-09 10:55:08 +11:00
head_32.S
powerpc: Call do_page_fault() with interrupts off
2012-03-09 10:55:08 +11:00
head_40x.S
powerpc: Call do_page_fault() with interrupts off
2012-03-09 10:55:08 +11:00
head_44x.S
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2012-05-24 16:17:30 -07:00
head_64.S
powerpc: Rework lazy-interrupt handling
2012-03-09 13:25:06 +11:00
head_booke.h
KVM: PPC: booke: category E.HV (GS-mode) support
2012-04-08 12:51:19 +03:00
head_fsl_booke.S
Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm
2012-05-24 16:17:30 -07:00
hw_breakpoint.c
powerpc: remove non-required uses of include <linux/module.h>
2011-10-31 19:30:44 -04:00
ibmebus.c
Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping
2012-04-04 17:13:43 -07:00
idle_6xx.S
…
idle_book3e.S
powerpc: Rework lazy-interrupt handling
2012-03-09 13:25:06 +11:00
idle_e500.S
powerpc: e500mc: Fix: use CONFIG_PPC_E500MC in idle_e500.S
2011-10-11 23:23:24 -05:00
idle_power4.S
powerpc: Fix power4/970 idle code regression with lockdep
2012-03-16 09:28:17 +11:00
idle_power7.S
KVM: PPC: Book3S HV: Make secondary threads more robust against stray IPIs
2012-04-08 14:01:20 +03:00
idle.c
powerpc: Remove unused cpu_idle_wait()
2012-05-08 12:35:07 +02:00
io-workarounds.c
powerpc: io-workarounds.c was implicitly getting init_mm
2011-10-31 19:30:37 -04:00
io.c
powerpc: various straight conversions from module.h --> export.h
2011-10-31 19:30:44 -04:00
iomap.c
powerpc: switch to GENERIC_PCI_IOMAP
2011-11-28 21:13:18 +02:00
iommu.c
powerpc/iommu: Reduce spinlock coverage in iommu_alloc and iommu_free
2012-07-03 14:14:47 +10:00
irq.c
powerpc/ftrace: Do not trace restore_interrupts()
2012-06-29 14:35:36 +10:00
isa-bridge.c
powerpc: Remove FW_FEATURE ISERIES from arch code
2012-03-21 11:16:11 +11:00
jump_label.c
powerpc: Fix build breakage in jump_label.c
2011-11-16 14:25:19 +11:00
kgdb.c
powerpc: Fix fallout from system.h split up
2012-04-02 14:00:03 +10:00
kprobes.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
kvm_emul.S
KVM: PPC: Avoid patching paravirt template code
2012-03-05 14:52:34 +02:00
kvm.c
KVM: PPC: Avoid patching paravirt template code
2012-03-05 14:52:34 +02:00
l2cr_6xx.S
Fix common misspellings
2011-03-31 11:26:23 -03:00
legacy_serial.c
powerpc: Fix build on some non-freescale platforms
2012-01-25 13:33:22 +11:00
lparcfg.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
machine_kexec_32.c
treewide: convert uses of ATTRIB_NORETURN to __noreturn
2012-01-12 20:13:03 -08:00
machine_kexec_64.c
treewide: convert uses of ATTRIB_NORETURN to __noreturn
2012-01-12 20:13:03 -08:00
machine_kexec.c
powerpc/irqdomain: Fix broken NR_IRQ references
2012-04-30 10:45:26 +10:00
Makefile
powerpc: Use generic init_task
2012-05-05 13:00:25 +02:00
misc_32.S
powerpc/47x: Kernel support for KEXEC
2012-05-03 08:40:23 -04:00
misc_64.S
powerpc/maple: Enable scom access functions on Maple
2011-06-29 17:48:20 +10:00
misc.S
powerpc: Remove legacy iSeries bits from assembly files
2012-03-09 10:54:59 +11:00
module_32.c
powerpc: Fix kernel panic during kernel module load
2012-06-08 19:59:08 +10:00
module_64.c
modules: make arch's use default loader hooks
2011-07-24 22:06:04 +09:30
module.c
powerpc: remove non-required uses of include <linux/module.h>
2011-10-31 19:30:44 -04:00
msi.c
…
nvram_64.c
powerpc/nvram: Generalize code for OS partitions in NVRAM
2011-03-04 18:19:04 +11:00
of_platform.c
powerpc/eeh: Introduce EEH device
2012-03-09 11:39:29 +11:00
paca.c
powerpc: Remove iseries specific fields in lppaca
2012-04-30 15:37:16 +10:00
pci_32.c
powerpc/PCI: compute I/O space bus-to-resource offset consistently
2012-03-20 10:41:44 -07:00
pci_64.c
powerpc/PCI: compute I/O space bus-to-resource offset consistently
2012-03-20 10:41:44 -07:00
pci_dn.c
powerpc/powernv: PCI support for p7IOC under OPAL v2
2011-11-25 14:53:15 +11:00
pci_of_scan.c
powerpc/PCI: convert devtree bus addresses to resource
2012-03-20 10:41:51 -07:00
pci-common.c
powerpc/pci: cleanup on duplicate assignment
2012-07-03 14:14:45 +10:00
pmc.c
bug.h: add include of it to various implicit C users
2012-02-29 17:15:08 -05:00
ppc32.h
…
ppc_ksyms.c
powerpc: Use the new generic strncpy_from_user() and strnlen_user()
2012-05-27 21:00:07 -07:00
ppc_save_regs.S
Fix common misspellings
2011-03-31 11:26:23 -03:00
proc_powerpc.c
…
process.c
Merge branch 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2012-05-23 10:59:07 -07:00
prom_init_check.sh
powerpc/powernv: Get kernel command line accross OPAL takeover
2011-09-20 16:09:48 +10:00
prom_init.c
powerpc: Fix Section mismatch warnings in prom_init.c
2012-06-29 14:35:36 +10:00
prom_parse.c
powerpc: remove non-required uses of include <linux/module.h>
2011-10-31 19:30:44 -04:00
prom.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
ptrace32.c
powerpc: Remove old powerpc specific ptrace getregs/setregs calls
2012-04-30 15:37:28 +10:00
ptrace.c
Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
2012-05-23 09:02:42 -07:00
reloc_32.S
powerpc: Process dynamic relocations for kernel
2011-12-20 10:21:08 -05:00
reloc_64.S
…
rtas_flash.c
powerpc/pseries: Cancel RTAS event scan before firmware flash
2011-11-25 14:11:29 +11:00
rtas_pci.c
Merge branch 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci
2012-03-23 14:02:12 -07:00
rtas-proc.c
…
rtas-rtc.c
powerpc/rtas-rtc: remove sideeffects of printk_ratelimit
2011-06-29 15:30:43 +10:00
rtas.c
Disintegrate and delete asm/system.h
2012-03-28 15:58:21 -07:00
rtasd.c
powerpc/pseries: Cancel RTAS event scan before firmware flash
2011-11-25 14:11:29 +11:00
setup_32.c
powerpc: fix build when CONFIG_BOOKE_WDT is enabled
2012-04-19 14:55:43 -05:00
setup_64.c
Disintegrate and delete asm/system.h
2012-03-28 15:58:21 -07:00
setup-common.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
setup.h
…
signal_32.c
powerpc: get rid of restore_sigmask()
2012-06-01 12:58:51 -04:00
signal_64.c
powerpc: get rid of restore_sigmask()
2012-06-01 12:58:51 -04:00
signal.c
new helper: signal_delivered()
2012-06-01 12:58:52 -04:00
signal.h
powerpc: get rid of restore_sigmask()
2012-06-01 12:58:51 -04:00
smp-tbsync.c
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
smp.c
powerpc/smp: remove call to ipi_call_lock()/ipi_call_unlock()
2012-07-03 14:14:42 +10:00
softemu8xx.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
stacktrace.c
powerpc: various straight conversions from module.h --> export.h
2011-10-31 19:30:44 -04:00
suspend.c
…
swsusp_32.S
Fix common misspellings
2011-03-31 11:26:23 -03:00
swsusp_64.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
swsusp_asm64.S
…
swsusp_booke.S
…
swsusp.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
sys_ppc32.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
syscalls.c
…
sysfs.c
Disintegrate asm/system.h for PowerPC
2012-03-28 18:30:02 +01:00
systbl_chk.c
…
systbl_chk.sh
…
systbl.S
…
tau_6xx.c
…
time.c
powerpc/time: Sanity check of decrementer expiration is necessary
2012-06-08 14:07:35 +10:00
traps.c
powerpc/irq: Make alignment & program interrupt behave the same
2012-05-09 09:42:33 +10:00
udbg_16550.c
powerpc: Add early debug for WSP platforms
2011-05-06 13:32:41 +10:00
udbg.c
powerpc: Random little legacy iSeries removal tidy ups
2012-03-28 11:33:23 +11:00
vdso.c
Disintegrate and delete asm/system.h
2012-03-28 15:58:21 -07:00
vecemu.c
…
vector.S
powerpc: Optimise enable_kernel_altivec
2012-04-30 15:37:17 +10:00
vio.c
powerpc/pseries: Add PFO support to the VIO bus
2012-05-14 10:49:09 +10:00
vmlinux.lds.S
powerpc: Remove legacy iSeries bits from assembly files
2012-03-09 10:54:59 +11:00