Commit Graph

3 Commits

Author SHA1 Message Date
Daniel R. Carvalho
98ac080ec4 base-stats,misc: Rename Stats namespace as statistics
As part of recent decisions regarding namespace
naming conventions, all namespaces will be changed
to snake case.

::Stats became ::statistics.

"statistics" was chosen over "stats" to avoid generating
conflicts with the already existing variables (there are
way too many "stats" in the codebase), which would make
this patch even more disturbing for the users.

Change-Id: If877b12d7dac356f86e3b3d941bf7558a4fd8719
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/45421
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-05-29 11:13:49 +00:00
Daniel R. Carvalho
469f0671d1 misc: Fix coding style for class-opening braces
The systemc dir was not included in this fix.

First it was identified that there were only occurrences
at 0, 1, and 2 levels of indentation, using:

    grep -nrE --exclude-dir=systemc \
        "^ *class [A-Za-z].* {$" src/

Then the following commands were run to replace:

<indent level>class X ... {

by:

<indent level>class X ...
<indent level>{

Level 0:
    grep -nrl --exclude-dir=systemc
        "^class [A-Za-z].* {$" src/ | \
        xargs sed -Ei \
        's/^class ([A-Za-z].*) \{$/class \1\n\{/g'

Level 1:
    grep -nrl --exclude-dir=systemc \
        "^    class [A-Za-z].* {$" src/ | \
        xargs sed -Ei \
        's/^    class ([A-Za-z].*) \{$/    class \1\n    \{/g'

and so on.

Change-Id: I17615ce16a333d69867b27c7bae0f4fdafd8b2eb
Signed-off-by: Daniel R. Carvalho <odanrc@yahoo.com.br>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39015
Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Maintainer: Giacomo Travaglini <giacomo.travaglini@arm.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-03-19 20:57:24 +00:00
Tiago Mück
205f8fdb5d mem-ruby: add TBEStorage structure
The TBEStorage is used to track the resources consumed by the TBETable,
i.e. the number of available TBE slots.

structure(TBEStorage, external ="yes") {
    int size();
    int capacity();
    int reserved();
    int slotsAvailable();
    bool areNSlotsAvailable(int n);
    void incrementReserved();
    void decrementReserved();
    int addEntryToNewSlot();
    void addEntryToSlot(int slot);
    void removeEntryFromSlot(int slot);
}

TBEStorage resource tracking has two main differences from TBETable:

1) Allows slot reservation. This is useful to implement protocols that
employ retry/credit messages instead of stall when the controller runs
out of TBEs to accept new request.

2) Can also assign multiple entries to the same slot. This is useful to
more easily model cases where multiple transactions share the same TBE
resource (i.e. the slot).
E.g: a request that triggers a replacement in a system without
dedicated WB/Eviction buffer; both transactions can can have separate
logical TBEs associated to the same slot.

The motivation for having a separate structures for tracking TBEs
availability are twofold:

- Keeps TBETable simple and without the additional overhead for
protocols that do not need these additional features.

- Having two separate transactions sharing the same TBE resource using
the current TBETable would be cumbersome since the TBETable is indexed
by the transaction address.

Change-Id: I64106d50068320bc925243732ef8ff9ef0b6c4bf
Signed-off-by: Tiago Mück <tiago.muck@arm.com>
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/41157
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
2021-02-17 18:30:58 +00:00