[compiler-rt] [scudo] Add primary option to enable/disable cache blocks. (PR #129794)

[Jordan R AW via llvm-commits]

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@@ -81,6 +81,10 @@ PRIMARY_REQUIRED(const s32, MaxReleaseToOsIntervalMs)
 
 // PRIMARY_OPTIONAL(TYPE, NAME, DEFAULT)
 //
+
+// Enables/disables primary block caching. Batch class still caches.
+PRIMARY_OPTIONAL(const bool, EnableCache, true)
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ajordanr-google wrote:

The name does feel a bit weird given that NoCache does still do Batch class caching. Maybe call it `BatchCacheOnly, false`? Especially looking at the code, the Batch class does seem fairly critical for normal operation of SizeClassAllocatorNoCache`.

https://github.com/llvm/llvm-project/pull/129794