gem5.git
8 years agobase: Output all AddrRange parameters to config.ini
Matt Poremba [Wed, 14 Sep 2016 03:06:18 +0000 (23:06 -0400)]
base: Output all AddrRange parameters to config.ini

Currently only 'start' and 'end' of AddrRange are printed in config.ini.
This causes address ranges to be overlapping when loading a c++-only
config with interleaved addresses using CxxConfigManger. This patch adds
prints for the interleave and XOR bits to config.ini such that address
ranges are properly setup with cxx config.

8 years agodev, arm: Add a customizable NoMali GPU model
Andreas Sandberg [Tue, 6 Sep 2016 09:22:38 +0000 (10:22 +0100)]
dev, arm: Add a customizable NoMali GPU model

Add a customizable NoMali GPU model and an example Mali T760
configuration. Unlike the normal NoMali model (NoMaliGpu), the
NoMaliCustopmGpu model exposes all the important GPU ID registers to
Python. This makes it possible to implement custom GPU configurations
by without changing the underlying NoMali library.

Change-Id: I4fdba05844c3589893aa1a4c11dc376ec33d4e9e
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Andreas Hansson <andreas.hansson@arm.com>
8 years agoext: eliminate warnings in SST connector
Curtis Dunham [Fri, 2 Sep 2016 13:58:15 +0000 (14:58 +0100)]
ext: eliminate warnings in SST connector

Now compiles completely clean.

8 years agocommit 15c633eea52f21dae8cb3a195823b3cdec7be491
Curtis Dunham [Wed, 24 Aug 2016 13:20:53 +0000 (14:20 +0100)]
commit 15c633eea52f21dae8cb3a195823b3cdec7be491
Author: Curtis Dunham <Curtis.Dunham@arm.com>
    ext: update SST connector for SST 6.0

8 years agoconfig: KVM acceleration for apu_se.py
David Hashe [Mon, 22 Aug 2016 15:43:44 +0000 (11:43 -0400)]
config: KVM acceleration for apu_se.py

Add support for using KVM to accelerate APU simulations. The intended use
case is to fast-forward through runtime initialization until the first
kernel launch.

8 years agotests: Add example of using KVM acceleration with an app
David Hashe [Mon, 22 Aug 2016 15:41:37 +0000 (11:41 -0400)]
tests: Add example of using KVM acceleration with an app

Add #ifdef's to gpu-hello.cpp demonstrating how to annotate an application
for KVM acceleration.

8 years agocpu, mem, sim: Change how KVM maps memory
David Hashe [Mon, 22 Aug 2016 15:41:05 +0000 (11:41 -0400)]
cpu, mem, sim: Change how KVM maps memory

Only map memories into the KVM guest address space that are
marked as usable by KVM. Create BackingStoreEntry class
containing flags for is_conf_reported, in_addr_map, and
kvm_map.

8 years agodev: Revert 0a316996de76 [dev, sim: Added missing override...]
Andreas Sandberg [Tue, 16 Aug 2016 09:59:15 +0000 (10:59 +0100)]
dev: Revert 0a316996de76 [dev, sim: Added missing override...]

This changeset reverts the changset "dev, sim: Added missing override
keywords to fix CLANG compilation (OSX)" which was incorrectly rebased.

Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agocpu: Add missing override in Minor's exec context
Andreas Sandberg [Mon, 15 Aug 2016 11:00:37 +0000 (12:00 +0100)]
cpu: Add missing override in Minor's exec context

Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agocpu: Fixed clang errors. Added 'override' keyword for virtual functions.
Reiley Jeapaul [Mon, 15 Aug 2016 11:00:36 +0000 (12:00 +0100)]
cpu: Fixed clang errors. Added 'override' keyword for virtual functions.

Change-Id: Ic37311443ca11ee6d95bceffea599e054e7aa110
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agomem: Print an MSHR without triggering any assertions
Nikos Nikoleris [Mon, 15 Aug 2016 11:00:36 +0000 (12:00 +0100)]
mem: Print an MSHR without triggering any assertions

Previously printing an mshr would trigger an assertion if the MSHR was
not in service or if the targets list was empty. This patch changes
the print function to bypasses the accessor functions for
postInvalidate and postDowngrade and avoid the relevant assertions. It
also checks if the targets list is empty before calling print on it.

Change-Id: Ic18bee6cb088f63976112eba40e89501237cfe62
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agodev, sim: Added missing override keywords to fix CLANG compilation (OSX)
Matteo Andreozzi [Mon, 15 Aug 2016 11:00:35 +0000 (12:00 +0100)]
dev, sim: Added missing override keywords to fix CLANG compilation (OSX)

Change-Id: Ice5fa11e77d06576eaa42149f5fa340a769d8b01
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agocpu, arch: fix the type used for the request flags
Nikos Nikoleris [Mon, 15 Aug 2016 11:00:35 +0000 (12:00 +0100)]
cpu, arch: fix the type used for the request flags

Change-Id: I183b9942929c873c3272ce6d1abd4ebc472c7132
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agotests: remove EIO tests
Steve Reinhardt [Sun, 14 Aug 2016 03:07:28 +0000 (23:07 -0400)]
tests: remove EIO tests

An email sent to gem5-users and gem5-dev asking if anyone was
still using EIO traces got no responses, so it seems like it's
not worth maintaining this any longer.

8 years agostats: Update to match classic memory changes
Andreas Sandberg [Fri, 12 Aug 2016 13:12:59 +0000 (14:12 +0100)]
stats: Update to match classic memory changes

8 years agomem: Add support for secure packets in the snoop filter
Nikos Nikoleris [Fri, 12 Aug 2016 13:11:45 +0000 (14:11 +0100)]
mem: Add support for secure packets in the snoop filter

Secure and non-secure data can coexist in the cache and therefore the
snoop filter should treat differently packets with secure and non
secure accesses. This patch uses the lower bits of the line address to
keep track of whether the packet is addressing secure memory or not.

Change-Id: I54a5e614dad566a5083582bede86c86896f2c2c1
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Stephan Diestelhorst <stephan.diestelhorst@arm.com>
Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com>
8 years agomem: Add snoop filter to SystemXBar by default
Andreas Hansson [Fri, 12 Aug 2016 13:11:45 +0000 (14:11 +0100)]
mem: Add snoop filter to SystemXBar by default

This patch changes the default behaviour of the SystemXBar, adding a
snoop filter. With the recent updates to the snoop filter allocation
behaviour this change no longer causes problems for the regressions
without caches.

Change-Id: Ibe0cd437b71b2ede9002384126553679acc69cc1
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com>
8 years agomem: Use FromCache attribute in snoop filter allocation
Andreas Hansson [Fri, 12 Aug 2016 13:11:45 +0000 (14:11 +0100)]
mem: Use FromCache attribute in snoop filter allocation

This patch improves the snoop filter allocation decisions by not only
looking at whether a port is snooping or not, but also if the packet
actually came from a cache. The issue with only looking at isSnooping
is that the CPU ports, for example, are snooping, but not actually
caching. Previously we ended up incorrectly allocating entries in
systems without caches (such as the atomic and timing quick
regressions). Eventually these misguided allocations caused the snoop
filter to panic due to an excessive size.

On the request path we now include the fromCache check on the packet
itself, and for responses we check if we actually have a snoop-filter
entry.

Change-Id: Idd2dbc4f00c7e07d331e9a02658aee30d0350d7e
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Stephan Diestelhorst <stephan.diestelhorst@arm.com>
Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com>
8 years agomem: Update mostly exclusive policy even further
Andreas Hansson [Fri, 12 Aug 2016 13:11:45 +0000 (14:11 +0100)]
mem: Update mostly exclusive policy even further

This patch takes yet another step in maintaining the clusivity, in
that it allows a mostly-inclusive cache to hold on to blocks even when
responding to a ReadExReq or UpgradeReq. Previously the cache simply
invalidated these blocks, but there is no strict need to do so.

The most important part of this patch is that we simply mark the block
clean when satisfying the upstream request where the cache is allowed
to keep the block. The only tricky part of the patch is in the memory
management of deferred snoops, where we need to distinguish the cases
where only the packet was copied (we expected to respond), and the
cases where we created an entirely new packet and request (we kept it
only to replay later).

The code in satisfyRequest is definitely ready for some refactoring
after this.

Change-Id: I201ddc7b2582eaa46fb8cff0c7ad09e02d64b0fc
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com>
8 years agomem: Update mostly exclusive cache policy to cover more cases
Andreas Hansson [Fri, 12 Aug 2016 13:11:45 +0000 (14:11 +0100)]
mem: Update mostly exclusive cache policy to cover more cases

This patch changes how the mostly exclusive policy is enforced to
ensure that we drop blocks when we should. As part of this change, the
actual invalidation due to the clusivity enforcement is moved outside
the hit handling, to a separate method maintainClusivity. For the
timing mode that means we can deal with all MSHR targets before taking
any action and possibly dropping the block. The method
satisfyCpuSideRequest is also renamed satisfyRequest as part of this
change (since we only ever see requests from the cpu-side port).

Change-Id: If6f3d1e0c3e7be9a67b72a55e4fc2ec4a90fd3d2
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com>
8 years agomem: Add a FromCache packet attribute
Andreas Hansson [Fri, 12 Aug 2016 13:11:45 +0000 (14:11 +0100)]
mem: Add a FromCache packet attribute

This patch adds a FromCache attribute to the packet, and updates a
number of the existing request commands to reflect that the request
originates from a cache. The attribute simplifies checking if a
requests came from a cache or not, and this is used by both the cache
and snoop filter in follow-on patches.

Change-Id: Ib0a7a080bbe4d6036ddd84b46fd45bc7eb41cd8f
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Tony Gutierrez <anthony.gutierrez@amd.com>
Reviewed-by: Steve Reinhardt <stever@gmail.com>
8 years agoarm, config: Exit with fatal error if using Ruby
Andreas Sandberg [Wed, 10 Aug 2016 15:40:14 +0000 (16:40 +0100)]
arm, config: Exit with fatal error if using Ruby

Ruby on ARM is currently very experimental. Fail with a fatal error
that explains this to make sure users are aware of the limitations (it
doesn't actually work yet!).

Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agoarm, config: Add initial support for Ruby
Andreas Sandberg [Wed, 10 Aug 2016 15:26:34 +0000 (16:26 +0100)]
arm, config: Add initial support for Ruby

Add initial support for creating an ARM system with a Ruby-based
memory system. This support is currently experimental and limited to
the new VExpress_GEM5_V1 platform.

Change-Id: I36baeb68b0d891e34ea46aafe17b5e55217b4bfa
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Brad Beckmann <brad.beckmann@amd.com>
8 years agoarm, dev: Add support for listing DMA ports in new platforms
Andreas Sandberg [Wed, 10 Aug 2016 14:27:26 +0000 (15:27 +0100)]
arm, dev: Add support for listing DMA ports in new platforms

When using a Ruby memory system, the Ruby configuration scripts expect
to get a list of DMA ports to create the necessary DMA sequencers. Add
support in the utility functions that wire up devices to append DMA
ports to a list instead of connecting them to the IO bus. These
functions are currently only used by the VExpress_GEM5_V1 platform.

Change-Id: I46059e46b0f69e7be5f267e396811bd3caa3ed63
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-by: Brad Beckmann <brad.beckmann@amd.com>
8 years agoruby: Implement support for functional accesses to PIO ranges
Andreas Sandberg [Wed, 10 Aug 2016 14:27:13 +0000 (15:27 +0100)]
ruby: Implement support for functional accesses to PIO ranges

There are cases where we want to put boot ROMs on the PIO bus. Ruby
currently doesn't support functional accesses to such memories since
functional accesses are always assumed to go to physical memory. Add
the required support for routing functional accesses to the PIO bus.

Change-Id: Ia5b0fcbe87b9642bfd6ff98a55f71909d1a804e3
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Reviewed-by: Brad Beckmann <brad.beckmann@amd.com>
Reviewed-by: Michael LeBeane <michael.lebeane@amd.com>
8 years agoarm: Don't report the boot ROM as a memory in config tables
Andreas Sandberg [Wed, 10 Aug 2016 13:49:11 +0000 (14:49 +0100)]
arm: Don't report the boot ROM as a memory in config tables

The boot ROM shouldn't be used as a memory by the kernel. Memories
have a flag to indicate this which is set for some platforms. Update
all platforms to consistently set this flag to indicate that the boot
ROM shouldn't be reported as normal memory.

Change-Id: I2bf0273e99d2a668e4e8d59f535c1910c745aa7b
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Brad Beckmann <brad.beckmann@amd.com>
--HG--
extra : amend_source : c2cbda38636ea37cbe9ae6977a06b923eab5ba56

8 years agosim: fix issues with pwrite(); don't enable fstatfs
Tony Gutierrez [Fri, 5 Aug 2016 21:15:19 +0000 (17:15 -0400)]
sim: fix issues with pwrite(); don't enable fstatfs

this patch fixes issues with changeset 11593

use the host's pwrite() syscall for pwrite64Func(),
as opposed to pwrite64(), because pwrite64() does
not work well on all distros.

undo the enabling of fstatfs, as we will add this
in a separate pate.

8 years agox86, sim: add some syscalls to X86
Tony Gutierrez [Thu, 4 Aug 2016 16:32:21 +0000 (12:32 -0400)]
x86, sim: add some syscalls to X86

this patch adds an implementation for the pwrite64 syscall and
enables it for x86_64, and enables fstatfs for x86_64.

8 years agostyle: Make the style fixers safe
Jason Lowe-Power [Wed, 3 Aug 2016 16:10:46 +0000 (11:10 -0500)]
style: Make the style fixers safe

Adds a wrapper to the fix functions of the verifiers. This wrapper first
copies the original file to a backup file, then performs the fix. If an
error occurs, the backup file is used to restore the original file.

Also fixed a line-length error in verifiers.py

8 years agoarm: s/ctx_id/ctx/ the GIC
Curtis Dunham [Tue, 2 Aug 2016 12:35:47 +0000 (13:35 +0100)]
arm: s/ctx_id/ctx/ the GIC

Factored out of the larger banked register change.

Change-Id: I947dbdb9c00b4678bea9d4f77b913b7014208690
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agoarm: bank GIC registers per CPU
Curtis Dunham [Tue, 2 Aug 2016 12:35:45 +0000 (13:35 +0100)]
arm: bank GIC registers per CPU

Updated according to GICv2 documentation.

Change-Id: I5d926d1abf665eecc43ff0f7d6e561e1ee1c390a
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agostats: update references
Curtis Dunham [Tue, 2 Aug 2016 10:34:32 +0000 (11:34 +0100)]
stats: update references

8 years agoarm: refactor page table walking
Curtis Dunham [Tue, 2 Aug 2016 09:38:03 +0000 (10:38 +0100)]
arm: refactor page table walking

Introduce and use a lookup table.

Using fetchDescriptor() rather than DMA cleanly handles nested paging.

Change-Id: I69ec762f176bd752ba1040890e731826b58d15a6

8 years agoarm: warn not fail on use of missing miscreg CNTHCTL_EL2
Dylan Johnson [Tue, 2 Aug 2016 09:38:03 +0000 (10:38 +0100)]
arm: warn not fail on use of missing miscreg CNTHCTL_EL2

During host bootup, KVM reads/writes to CNTHCTL_EL2. Because this
miscreg has not been implemented, the simulation would end there. This
patch causes the simulation to warn about the read/write instead of fail.

Change-Id: If034bfd0818a9a5e50c5fe86609e945258c96fa3

8 years agoarm: Check TLB stage 2 permissions in AArch64
Dylan Johnson [Tue, 2 Aug 2016 09:38:03 +0000 (10:38 +0100)]
arm: Check TLB stage 2 permissions in AArch64

This fixes a bug where stage 2 lookups used the AArch32
permissions rules even if we were executing in AArch64 mode.

Change-Id: Ia40758f0599667ca7ca15268bd3bf051342c24c1

8 years agoarm: correctly assign faulting IPA's to HPFAR_EL2
Dylan Johnson [Tue, 2 Aug 2016 09:38:03 +0000 (10:38 +0100)]
arm: correctly assign faulting IPA's to HPFAR_EL2

This patch corrects IPA reporting if the translation faults in a
stage 2 lookup.

Change-Id: I0b914527f8a9f98a5e980a131cf9d03e5584b4e9

8 years agoarm: Add TLBI instruction for stage 2 IPA's
Dylan Johnson [Tue, 2 Aug 2016 09:38:03 +0000 (10:38 +0100)]
arm: Add TLBI instruction for stage 2 IPA's

This patch adds support for stage 2 TLBI instructions
such as TLBI IPAS2E1_Xt.

Change-Id: I0cd5e8055b0c1003e03439aa5183252f50ea0a88

8 years agoarm: Fix stage 2 memory attribute checking in AArch64
Dylan Johnson [Tue, 2 Aug 2016 09:38:03 +0000 (10:38 +0100)]
arm: Fix stage 2 memory attribute checking in AArch64

Change-Id: I14c93a5460550051a12129e792a9a9bd522a145c

8 years agoarm: Fix trapping to Hypervisor during MSR/MRS read/write
Dylan Johnson [Tue, 2 Aug 2016 09:38:03 +0000 (10:38 +0100)]
arm: Fix trapping to Hypervisor during MSR/MRS read/write

This patch restricts trapping to hypervisor only if we are in the
correct exception level for the trap to happen.

Change-Id: I0a382b6a572ef835ea36d2702b8a81b633bd3df0

8 years agoarm: Fix secure state checking in various places
Dylan Johnson [Tue, 2 Aug 2016 09:38:02 +0000 (10:38 +0100)]
arm: Fix secure state checking in various places

Faults that could potentially be routed to the hypervisor checked
whether or not they were in a secure state without checking if security
was enabled or not. This caused faults not to be routed correctly. This
patch causes secure state checking to first ask if security is enabled.

Change-Id: I179e9b181b27f552734c9bab2b18d05ac579a119

8 years agoarm: Fix stage 2 determination in table walker
Dylan Johnson [Tue, 2 Aug 2016 09:38:02 +0000 (10:38 +0100)]
arm: Fix stage 2 determination in table walker

We recompute if we are doing a stage 2 walk inside of the table walker
but we have already figured it out in the tlb. Pass the information in
to the walk instead of recomputing it.

Change-Id: I39637ce99309b2ddbc30344d45ac9ebf6a203401

8 years agoarm: Refactor aarch64 table walk logic to remove redundancy
Dylan Johnson [Tue, 2 Aug 2016 09:38:02 +0000 (10:38 +0100)]
arm: Refactor aarch64 table walk logic to remove redundancy

The functional case is already handled within the fetchDescriptor()
function. We can thus use that function for both atomic and functional
mode when we start the table walk.

Change-Id: Iacaed28cd9024d259fd37a58150efd00ff94d86e

8 years agoarm: Add check to fault routing for hypervisor/virtualization
Dylan Johnson [Tue, 2 Aug 2016 09:38:02 +0000 (10:38 +0100)]
arm: Add check to fault routing for hypervisor/virtualization

This patch adds the option for faults to be routed to the hypervisor
using the pre-existing routeToHyp() functions that are present in each
fault type.

Change-Id: I9735512c094457636b9870456a5be5432288e004

8 years agoarm: Fix EL perceived at TLB for address translation instructions
Dylan Johnson [Tue, 2 Aug 2016 09:38:02 +0000 (10:38 +0100)]
arm: Fix EL perceived at TLB for address translation instructions

During address translation instructions (such as AT S1E1R_Xt) the exception
level can be different than the current exception level. This patch fixes
how the TLB determines what EL to use during these instructions.

Change-Id: Ia9ce229404de9e284bc1f7479fd2c580efd55f8f

8 years agoarm: Add AArch64 hypervisor call instruction 'hvc'
Dylan Johnson [Tue, 2 Aug 2016 09:38:02 +0000 (10:38 +0100)]
arm: Add AArch64 hypervisor call instruction 'hvc'

This patch adds the AArch64 instruction hvc which raises an exception
from EL1 into EL2. The host OS uses this instruction to world switch
into the guest.

Change-Id: I930ee43f4f0abd4b35a68eb2a72e44e3ea6570be

8 years agoarm: add stage2 translation support
Dylan Johnson [Tue, 2 Aug 2016 09:38:02 +0000 (10:38 +0100)]
arm: add stage2 translation support

Change-Id: I8f7c09c7ec3a97149ebebf4b21471b244e6cecc1

8 years agoarm: enable EL2 support
Curtis Dunham [Tue, 2 Aug 2016 09:38:01 +0000 (10:38 +0100)]
arm: enable EL2 support

Change-Id: I59fa4fae98c33d9e5c2185382e1411911d27d341

8 years agoarm: invalidate TLB miscreg cache on modification of HSCTLR
Dylan Johnson [Tue, 2 Aug 2016 09:38:01 +0000 (10:38 +0100)]
arm: invalidate TLB miscreg cache on modification of HSCTLR

Change-Id: I5212c91c56435fe008950ed99feacc6921609226

8 years agoarm: change instruction classes to catch hyp traps
Dylan Johnson [Tue, 2 Aug 2016 09:38:01 +0000 (10:38 +0100)]
arm: change instruction classes to catch hyp traps

Change-Id: I122918d0e3dfd01ae1a4ca4f19240a069115c8b7

8 years agotests: Add regex-based ignore rules for ref files
Andreas Sandberg [Fri, 22 Jul 2016 14:24:20 +0000 (15:24 +0100)]
tests: Add regex-based ignore rules for ref files

There are cases where we need to ignore files with specific extensions
(e.g., when Mercurial litters the file system with patch
rejects). Implement this functionality using a helper class
(FileIgnoreList) that supports both regular expressions and basic
string comparisons.

Change-Id: I34549754bd2e10ed230ffb2dc057403349f8fa78
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agostats: update references
Curtis Dunham [Thu, 21 Jul 2016 16:19:18 +0000 (17:19 +0100)]
stats: update references

8 years agoarm, config: Add an example ARM big.LITTLE(tm) configuration script
Gabor Dozsa [Thu, 21 Jul 2016 16:19:16 +0000 (17:19 +0100)]
arm, config: Add an example ARM big.LITTLE(tm) configuration script

An ARM big.LITTLE system consists of two cpu clusters: the big
CPUs are typically complex out-of-order cores and the little
CPUs are simpler in-order ones. The fs_bigLITTLE.py script
can run a full system simulation with various number of big
and little cores and cache hierarchy. The commit also includes
two example device tree files for booting Linux on the
bigLITTLE system.

Change-Id: I6396fb3b2d8f27049ccae49d8666d643b66c088b
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agocpu: Fix Minor SMT WFI/drain interaction issues
Mitch Hayenga [Thu, 21 Jul 2016 16:19:16 +0000 (17:19 +0100)]
cpu: Fix Minor SMT WFI/drain interaction issues

The behavior of WFI is to cause minor to cease evaluating
pipeline logic until an interrupt is observed, however
a user may wish to drain the system while a core is sleeping
due to a WFI.  This patch makes WFI drain.  If an actual
drain occurs during a WFI, the CPU is already drained and will
immediately be ready for swapping, checkpointing, etc.  This
should not negatively impact performance as WFI instructions
are 'stream-changing' (treated like unpredicted branches), so
all remaining instructions are wrong-path and will be squashed
rapidly.

Change-Id: I63833d5acb53d8dde78f9f0c9611de0ece385e45

8 years agocpu: Add SMT support to MinorCPU
Mitch Hayenga [Thu, 21 Jul 2016 16:19:16 +0000 (17:19 +0100)]
cpu: Add SMT support to MinorCPU

This patch adds SMT support to the MinorCPU.  Currently
RoundRobin or Random thread scheduling are supported.

Change-Id: I91faf39ff881af5918cca05051829fc6261f20e3

8 years agoisa: Modify get/check interrupt routines
Mitch Hayenga [Thu, 21 Jul 2016 16:19:15 +0000 (17:19 +0100)]
isa: Modify get/check interrupt routines

Make it so that getInterrupt *always* returns an interrupt if
checkInterrupts() returns true.  This fixes/simplifies handling
of interrupts on the SMT FS CPUs (currently minor).

8 years agobase: Add total() to Vector2D stat
David Guillen Fandos [Thu, 21 Jul 2016 16:19:15 +0000 (17:19 +0100)]
base: Add total() to Vector2D stat

This patch adds a total() function to the Vector2D
stat type. Similar to other stats such as Scalar or
Vector it is useful to be able to read the total for
a given stat.

8 years agomem: Add snoop traffic statistic
David Guillen Fandos [Thu, 21 Jul 2016 16:19:14 +0000 (17:19 +0100)]
mem: Add snoop traffic statistic

8 years agoconfig: Allow SPARC FS image to be specified on the command line
Jakub Jermar [Tue, 19 Jul 2016 14:52:46 +0000 (09:52 -0500)]
config: Allow SPARC FS image to be specified on the command line

At the moment the SPARC FS machine configuration comes with a hardcoded
value for using the Solaris 10 disk image from the OpenSPARC tarball. The
--disk-image option is completely ignored for SPARC. This simple patch
modifies the behavior so that --disk-image option is both taken into
account and also required. This makes it possible to easily change SPARC FS
images without having to modify the configuration files.

8 years agodev, dist: Fixed a scheduling bug in the etherswitch
Mohammad Alian [Tue, 19 Jul 2016 14:48:56 +0000 (09:48 -0500)]
dev, dist: Fixed a scheduling bug in the etherswitch

This patch fixes a bug in etherswitch. When a packet gets inserted
in the output fifo, the txEvent has to always be reschedule,
not only when an event is already scheduled. This can raise
the assertion in the reschedule function.

8 years agobase: Fix inverted check in ELF .text size warning
Andreas Sandberg [Mon, 11 Jul 2016 15:30:35 +0000 (16:30 +0100)]
base: Fix inverted check in ELF .text size warning

8 years agoarm: Don't consult the TLB test iface for functional translations
Andreas Sandberg [Mon, 11 Jul 2016 09:39:56 +0000 (10:39 +0100)]
arm: Don't consult the TLB test iface for functional translations

Don't consult the TLB test interface for PA's returned by functional
translations by the AT instruction. We implement this by chaning the
ISA code to synthesize 0-length functional reads for the TLB lookup.
The TLB then bypasses the final PA check in the tester if the size is
zero.

Change-Id: I2487b7f829cea88c37e229e9fc7a4543aced961b
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
8 years agobase: Convert ELF .text size check assertion to a warning
Andreas Sandberg [Mon, 11 Jul 2016 09:39:30 +0000 (10:39 +0100)]
base: Convert ELF .text size check assertion to a warning

The ELF loader currently has an assertion that checks if the size of a
loaded .text secion is non-zero. This is useful in the general case as
an empty text section normally indicates that there is something
strange with the ELF file. However, asserting isn't very useful. This
changeset converts the assert into a warning that tells the user that
something strange is happening.

Change-Id: I313e17847b50a0eca00f6bd00a54c610d626c0f0
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
8 years agomem: Remove stale argument from a DPRINTF in the cache code
Nikos Nikoleris [Mon, 11 Jul 2016 09:39:22 +0000 (10:39 +0100)]
mem: Remove stale argument from a DPRINTF in the cache code

Change-Id: I70dd11c23b45dfc606ef08233d2e50fcc0817505
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agomisc: merge with sytle checker fix
Jason Lowe-Power [Fri, 1 Jul 2016 15:37:57 +0000 (10:37 -0500)]
misc: merge with sytle checker fix

Oops.

8 years agoruby: Fix double statistic registration in garnet
Matthew Poremba [Fri, 1 Jul 2016 15:31:37 +0000 (10:31 -0500)]
ruby: Fix double statistic registration in garnet

Currently garnet will not run due to double statistic registration of new
stats in ClockedObject. This occurs because a temporary array named 'cls'
is being added as a child to garnet internal and external link SimObjects.
This patch simply renames the temporary array which prevents it from
being added as a child object and avoids the assertion that a statistic
was already registered.

Committed by Jason Lowe-Power <jason@lowepower.com>

8 years agoext: Update DRAMPower
Matthias Jung [Fri, 1 Jul 2016 15:31:36 +0000 (10:31 -0500)]
ext: Update DRAMPower

Sync DRAMPower to external tool

This patch syncs the DRAMPower library of gem5 to the external
one on github (https://github.com/ravenrd/DRAMPower) of which
I am a maintainer.

The version used is the commit:
902a00a1797c48a9df97ec88868f20e847680ae6
from 07.  May.  2016.

Committed by Jason Lowe-Power <jason@lowepower.com>

8 years agomisc: SystemC Elastic Trace Player Example.
Matthias Jung [Fri, 1 Jul 2016 15:31:33 +0000 (10:31 -0500)]
misc: SystemC Elastic Trace Player Example.

This patch adds an example configuration for elastic trace playing into the
SystemC world, similar to the already existing traffic generator example in
/util/tlm.

Committed by Jason Lowe-Power <jason@lowepower.com>

8 years agomisc: fix a compile error due to incompability with SystemC 2.3.1
Christian Menard [Fri, 1 Jul 2016 14:50:18 +0000 (09:50 -0500)]
misc: fix a compile error due to incompability with SystemC 2.3.1

This patch fixes an ambigous call compile error

Committed by Jason Lowe-Power <jason@lowepower.com>

8 years agomem: tester for new HMC configuration
Abdul Mutaal Ahmad [Fri, 1 Jul 2016 14:48:43 +0000 (09:48 -0500)]
mem: tester for new HMC configuration

This patch provides the example test script to configure different HMC
architecture and run traffic through traffic generator.

Committed by Jason Lowe-Power <jason@lowepower.com>

8 years agomem: different HMC configuration
Abdul Mutaal Ahmad [Fri, 1 Jul 2016 14:45:21 +0000 (09:45 -0500)]
mem: different HMC configuration

In this new hmc configuration we have used the existing components in gem5
mainly [SerialLink] [NoncoherentXbar]& [DRAMCtrl] to define 3 different
architecture for HMC.

Highlights

1- It explores 3 different HMC architectures

2- It creates 4-HMC crossbars and attaches 16 vault controllers with it.
This  will connect vaults to serial links

3- From the previous version, HMCController with round robin funtionality
is being removed and all the serial links are being accessible directly
from user ports

4- Latency incorporated by HMCController (in previous version) is being
added to SerialLink

Committed by Jason Lowe-Power <jason@lowepower.com>

8 years agostyle: Fix incorrect references style verifiers
Andreas Sandberg [Fri, 1 Jul 2016 14:35:52 +0000 (15:35 +0100)]
style: Fix incorrect references style verifiers

The style checker for spacing around control statements (ControlSpace)
and the whitespace checker (Whitespace) didn't refer to some of their
configuration variables correctly. This changeset fixes those issues.

Reported-by: Jason Lowe-Power <power.jg@gmail.com>
--HG--
extra : amend_source : 05d82d27d4c42aacd78b514d3ca35ca5744164bb

8 years agomisc: Separate stats file for SystemC-gem5 co-simulation
Abdul Mutaal Ahmad [Fri, 1 Jul 2016 14:30:15 +0000 (09:30 -0500)]
misc: Separate stats file for SystemC-gem5 co-simulation

In previous versions of systemC-gem5 coupling statistics were not updated
for the systemc-gem5 simulation. systemC-gem5 simulation only need the
previously built config.ini file and normal gem5 simulation has to be run
once to generate config.ini file. Thus stats.txt inside the m5out folder is
redundant for systemC-gem5 simulation. A new stats file is now generated
with the all the statistics for systemC-gem5 simulation. This will also
resolve the stats issue in tlm-sysmtemC simulation.

Committed by Jason Lowe-Power <jason@lowepower.com>

8 years agoscons: Track swig packages when loading embedded swig code
Andreas Hansson [Tue, 28 Jun 2016 07:50:00 +0000 (03:50 -0400)]
scons: Track swig packages when loading embedded swig code

This patch changes how the embedded swig code is loaded to ensure that
gem5 works with swig 3.0.9. For Python 2.7 and above, swig 3.0.9 now
relies on importlib, and actually looks in the appropriate packages,
even for the wrapped C code. However, the swig wrapper does not
explicitly place the module in the right package (it just calls
Py_InitModule), and we have to take explicit action to ensure that the
swig code can be loaded. This patch adds the information to the
generated wrappers and the appropriate calls to set the context as
part of the swig initialisation.

Previous versions of swig used to fall back on looking in the global
namespace for the wrappers (and still do for Python 2.6), but
technically things should not work without the functionality in this
patch.

8 years agostats: Update stats to reflect ARM changes
Andreas Sandberg [Tue, 21 Jun 2016 15:42:04 +0000 (16:42 +0100)]
stats: Update stats to reflect ARM changes

8 years agoarm: Mark uninitialized new TLB entries as not valid
Nikos Nikoleris [Mon, 20 Jun 2016 14:51:31 +0000 (15:51 +0100)]
arm: Mark uninitialized new TLB entries as not valid

Previously when we initialized the TLB we would allocate a number of
TLB entries which would be marked as valid. As a result the TLB
contained an entry which would be considered a valid entry for the 0
page.

Change-Id: I23ace86426a171a4f6200ebeb29ad57c21647036
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agosim: Added library include to fix build errors on clang-703.0.31
Reiley Jeapaul [Mon, 20 Jun 2016 14:34:41 +0000 (15:34 +0100)]
sim: Added library include to fix build errors on clang-703.0.31

The use of array tuples, requires an explicit include of the array library

Change-Id: I06730051777a97edf80e41a5604184b387b12239
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agomem: Fix the snoop filter when there is a downstream addr mapper
Nikos Nikoleris [Mon, 20 Jun 2016 14:11:18 +0000 (15:11 +0100)]
mem: Fix the snoop filter when there is a downstream addr mapper

The snoop filter handles requests in two steps which preceed and
follow the call to send the packet downstream. An address mapper could
possibly change the address of the packet when it is sent downstream
breaking the snoop filter assumption that the address is unchanged

Change-Id: Ib2db755e9ebef4f2f7c0169a46b1b11185ffbe79
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agotests: Add a test command to get test status as an exit code
Andreas Sandberg [Mon, 20 Jun 2016 13:50:43 +0000 (14:50 +0100)]
tests: Add a test command to get test status as an exit code

Add a "test" command to tests.py that queries a test pickle file and
returns different exit codes depending on the outcome of the tests in
the file. The following exit codes can currently be returned:

  * 0: All tests were successful or skipped.

  * 1: General fault in the script such as incorrect parameters or
    failing to parse a pickle file.

  * 2: At least one test failed to run. This is what the summary
    formatter usually shows as a 'FAILED'.

  * 3: All tests ran correctly, but at least one failed to verify
    its output. When displaying test output using the summary
    formatter, such a test would show up as 'CHANGED'.

The command can be invoked like this:

./tests/tests.py test `find build/ARM/tests/opt/ -name status.pickle`

Change-Id: I7e6bc661516f38ff08dfda7c4359a1e10bf97864
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
8 years agotests: Split test results into running and verification
Andreas Sandberg [Mon, 20 Jun 2016 13:50:34 +0000 (14:50 +0100)]
tests: Split test results into running and verification

The test base class already assumes that test cases consists of a run
stage and a verification stage. Reflect this in the results class to
make it possible to detect cases where a run was successful, but
didn't verify.

Change-Id: I31ef393e496671221c5408aca41649cd8dda74ca
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
8 years agostyle: catch trailing white spaces in make and dts files
Gabor Dozsa [Mon, 20 Jun 2016 13:49:52 +0000 (14:49 +0100)]
style: catch trailing white spaces in make and dts files

Change-Id: I2a4f1893919660e51599902b972a6f3f5717e305
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agomem: Resolve TrafficGen trace relative to the config
Andreas Sandberg [Mon, 20 Jun 2016 13:49:37 +0000 (14:49 +0100)]
mem: Resolve TrafficGen trace relative to the config

The traffic generator currently resolves relative trace paths relative
to gem5's current working directory. This can lead to surprising
results for relative paths where the expectation would normally be
that they are resolved relative to the configuration file. This
changeset implements config-relative trace file lookups. The old
behavior is kept as a fallback for configs that expect that behavior.

Change-Id: I1bda4e16725842666ffc37dcb6838c23a6ff138c
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
8 years agoconfig: Fix omission of walker cache in config scripts
Andreas Hansson [Mon, 20 Jun 2016 13:39:49 +0000 (14:39 +0100)]
config: Fix omission of walker cache in config scripts

This patch ensures a walker cache is instantiated if specfied.

Change-Id: I2c6b4bf3454d56bb19558c73b406e1875acbd986
Reviewed-by: Curtis Dunham <curtis.dunham@arm.com>
Reviewed-by: Mitch Hayenga <mitch.hayenga@arm.com>
8 years agokern, arm: Dump dmesg on kernel panic/oops
Andreas Sandberg [Mon, 20 Jun 2016 13:39:49 +0000 (14:39 +0100)]
kern, arm: Dump dmesg on kernel panic/oops

Add helper functions to dump the guest kernel's dmesg buffer to a text
file in m5out. This functionality is split into two parts. First, a
dmesg dump function that can be used in other places:

void Linux::dumpDmesg(ThreadContext *, std::ostream &)

This function is used to implement two PCEvents: DmesgDumpEvent and
KernelPanic event. The only difference between the two is that the
latter produces a gem5 panic instead of a warning in addition to
dumping the kernel log.

Change-Id: I6d2af1d666ace57124089648ea906f6c787ac63c
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Gabor Dozsa <gabor.dozsa@arm.com>
8 years agobase: Fix multiple names to one address bug in SymbolTable
Andreas Sandberg [Mon, 20 Jun 2016 13:39:48 +0000 (14:39 +0100)]
base: Fix multiple names to one address bug in SymbolTable

The SymbolTable class currently assumes that at most one symbol can
point to a given address. If multiple symbols point to the same
address, only the first one gets added to the internal symbol table
since there is already a match in the address table.

This changeset converts the address table from a map into a multimap
to be able to handle cases where an address maps to multiple
symbols. Additionally, the insert method is changed to not fail if
there is a match in the address table.

Change-Id: I6b4f1d5560c21e49a4af33220efb2a8302961768
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
Reviewed-by: Andreas Hansson <andreas.hansson@arm.com>
Reviewed-by: Gabor Dozsa <gabor.dozsa@arm.com>
8 years agogpu-compute: Fixed a bug in decoding Atomic ST
Tuan Ta [Sat, 18 Jun 2016 17:02:13 +0000 (13:02 -0400)]
gpu-compute: Fixed a bug in decoding Atomic ST

There is a mismatch between DataType and SrcDataType in constructing
Atomic ST instruction. The mismatch causes atomic_store and
atomic_store_explicit function to store incorrect value in memory.

8 years agostats: update EIO stats
Steve Reinhardt [Mon, 13 Jun 2016 00:02:49 +0000 (20:02 -0400)]
stats: update EIO stats

8 years agogpu-compute: parametrize Wavefront size
jkalamat [Thu, 9 Jun 2016 15:24:55 +0000 (11:24 -0400)]
gpu-compute: parametrize Wavefront size

Eliminate the VSZ constant that defined the Wavefront size (in numbers of work
items); replaced it with a parameter in the GPU.py configuration script.
Changed all data structures dependent on the Wavefront size to be dynamically
sized. Legal values of Wavefront size are 16, 32, 64 for now and checked at
initialization time.

8 years agodist, dev: Fixed the packet ordering in etherswitch
Mohammad Alian [Wed, 8 Jun 2016 14:12:41 +0000 (09:12 -0500)]
dist, dev: Fixed the packet ordering in etherswitch

This patch fixes the order that packets gets pushed into the output fifo
of etherswitch. If two packets arrive at the same tick to the etherswitch,
we sort and push them based on their source port id.
In dist-gem5 simulations, if there is no ordering inforced while two
packets arrive at the same tick, it can lead to non-deterministic simulations

Committed by Jason Lowe-Power <power.jg@gmail.com>

8 years agosim: Make clang happy
Andreas Hansson [Tue, 7 Jun 2016 13:27:49 +0000 (14:27 +0100)]
sim: Make clang happy

Once again appeasing clang.

8 years agosim: added missing include to mathexpr.hh
Sergei Trofimov [Tue, 7 Jun 2016 13:27:35 +0000 (14:27 +0100)]
sim: added missing include to mathexpr.hh

mathexpr.hh uses std::function<> but was not including the appropriate
header, which resulted in an error

build/ARM/sim/mathexpr.hh:51:18: error: 'function' in namespace 'std'
does not name a template type
     typedef std::function<double(std::string)> EvalCallback;

This commit adds the missing include.

Change-Id: I6c01d77d4354c6de838538f137a38f75f9866166
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
Reviewed-by: Nikos Nikoleris <nikos.nikoleris@arm.com>
8 years agostats: Add power stats to test references
Andreas Sandberg [Mon, 6 Jun 2016 16:16:44 +0000 (17:16 +0100)]
stats: Add power stats to test references

Change-Id: Ic827213134b199446822f128b81d4a480e777fee

8 years agosim: Only print the power state transition warning once
Andreas Sandberg [Mon, 6 Jun 2016 16:16:44 +0000 (17:16 +0100)]
sim: Only print the power state transition warning once

A lot of objects seem to request no-op power transitions which
currently results in large amounts of warnings. These warnings are
benign and risk hiding more serious warnings. Make the warning a
warn_once to prevent console flooding.

Change-Id: I86c74b4224b167f14469250ef86ab69fde7a227e
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agopwr: Closing power and thermal feedback loop
David Guillen Fandos [Mon, 6 Jun 2016 16:16:44 +0000 (17:16 +0100)]
pwr: Closing power and thermal feedback loop

This patch makes thermal models use the power figures
calculated by power models. Since there is a circular
dependency between power and thermal (and thermal was
pushed before) this patch closes that loop.

Change-Id: I8bd5acf6a5026fdbbcfac47e33d27397f24a6f7d
Reviewed-by: Stephan Diestelhorst <stephan.diestelhorst@arm.com>
8 years agosim: Adding support for power models
David Guillen Fandos [Mon, 6 Jun 2016 16:16:44 +0000 (17:16 +0100)]
sim: Adding support for power models

This patch adds some basic support for power models in gem5.

The power interface is defined so it can interact with thermal
models as well. It implements a simple power evaluator that
can be used for simple power models that express power in the
form of a math expression. These expressions can use stats
within the same SimObject (or down its hierarchy) and some
magic variables such as "temp" for temperature.
In future patches we will extend this functionality to allow
slightly more complex expressions.

The model allows it to be extended to use other kinds of models.

Change-Id: I76752f9638b6815e229fd74cdcb7721a305cbc4b

8 years agopwr: Low-power idle power state for idle CPUs
David Guillen Fandos [Mon, 6 Jun 2016 16:16:43 +0000 (17:16 +0100)]
pwr: Low-power idle power state for idle CPUs

Add functionality to the BaseCPU that will put the entire CPU
into a low-power idle state whenever all threads in it are idle.

Change-Id: I984d1656eb0a4863c87ceacd773d2d10de5cfd2b

8 years agostats: Silence unused power stats
Andreas Sandberg [Mon, 6 Jun 2016 16:16:43 +0000 (17:16 +0100)]
stats: Silence unused power stats

The power stats are currently very noisy even if no power model has
been loaded. Silence stats that are either zero or nan.

Change-Id: I7d0220c2fcf01131084a219228f140cfaddaf95b
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agopwr: Add power states to ClockedObject
David Guillen Fandos [Mon, 6 Jun 2016 16:16:43 +0000 (17:16 +0100)]
pwr: Add power states to ClockedObject

Add 4 power states to the ClockedObject, provides necessary access
functions to check and update the power state. Default power state
is UNDEFINED, it is responsibility of the respective simulation
model to provide the startup state and any other logic for state
change. Add number of transition stat. Add distribution of time
spent in clock gated state. Add power state residency stat. Add
dump call back function to allow stats update of distribution
and residency stats.

Change-Id: Id086090a2ed720c9fcb37812a3c98f0f724907c6

8 years agostats: Fixing regStats function for some SimObjects
David Guillen Fandos [Mon, 6 Jun 2016 16:16:43 +0000 (17:16 +0100)]
stats: Fixing regStats function for some SimObjects

Fixing an issue with regStats not calling the parent class method
for most SimObjects in Gem5. This causes issues if one adds new
stats in the base class (since they are never initialized properly!).

Change-Id: Iebc5aa66f58816ef4295dc8e48a357558d76a77c
Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com>
8 years agosim: Call regStats of base-class as well
Stephan Diestelhorst [Mon, 6 Jun 2016 16:16:43 +0000 (17:16 +0100)]
sim: Call regStats of base-class as well

We want to extend the stats of objects hierarchically and thus it is necessary
to register the statistics of the base-class(es), as well.  For now, these are
empty, but generic stats will be added there.

Patch originally provided by Akash Bagdia at ARM Ltd.

8 years agostats: update EIO stats
Steve Reinhardt [Mon, 6 Jun 2016 04:18:34 +0000 (00:18 -0400)]
stats: update EIO stats