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Diffstat (limited to 'src/mem/cache/prefetch/queued.hh')
| -rw-r--r-- | src/mem/cache/prefetch/queued.hh | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/mem/cache/prefetch/queued.hh b/src/mem/cache/prefetch/queued.hh index 1ffbc9a6c..ae4c5e4ad 100644 --- a/src/mem/cache/prefetch/queued.hh +++ b/src/mem/cache/prefetch/queued.hh @@ -163,6 +163,9 @@ class QueuedPrefetcher : public BasePrefetcher /** Tag prefetch with PC of generating access? */ const bool tagPrefetch; + /** Percentage of requests that can be throttled */ + const unsigned int throttleControlPct; + // STATS Stats::Scalar pfIdentified; Stats::Scalar pfBufferHit; @@ -229,6 +232,16 @@ class QueuedPrefetcher : public BasePrefetcher bool alreadyInQueue(std::list<DeferredPacket> &queue, const PrefetchInfo &pfi, int32_t priority); + /** + * Returns the maxmimum number of prefetch requests that are allowed + * to be created from the number of prefetch candidates provided. + * The behavior of this service is controlled with the throttleControlPct + * parameter. + * @param total number of prefetch candidates generated by the prefetcher + * @return the number of these request candidates are allowed to be created + */ + size_t getMaxPermittedPrefetches(size_t total) const; + RequestPtr createPrefetchRequest(Addr addr, PrefetchInfo const &pfi, PacketPtr pkt); }; |