[TRTLLM-6341][chore] Preliminary refactors on the kv cache manager before supporting swa kv cache reuse#6767

Merged

eopXD merged 4 commits intoNVIDIA:mainfrom

eopXD:refactor-before-swa-kv-cache-reuse

Aug 20, 2025

Commits on Aug 19, 2025

[KV cache manager] No functional change intended, separate `KVCacheManager::updateToken` into `addToken` and `removeToken`
eopXD
committed
[KV cache manager] No functional change intended, add comment for more context to distinguish `BlockManager::addSequence` and `WindowBlockManager::addSequence`
eopXD
committed
[KV cache manager] No functional change intended, simplify shared/unshared last context block logic under `KVCacheManager::addSequence`
eopXD
committed
[batch manager][unit test] No functional change intended, remove kv cache block allocation on token addition for cross kv manager
eopXD
committed