Use the kernel's named VMA feature for identifying the per-CPU slab. - #460
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Depending on the current slab size, the number of CPUs, and the alignment obtained from TCMalloc's Arena allocator, the slab may not be exactly aligned to an integer number of hugepages. To avoid splitting VMAs in a way that would prohibit hugepage coverage, we round up from below and down from above, noting the rounding that occurred in the name. Inactive slabs that have been drained and are held in reserve for potential future reuse are noted with "drained" in their name. PiperOrigin-RevId: 959233675
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Use the kernel's named VMA feature for identifying the per-CPU slab.
Depending on the current slab size, the number of CPUs, and the alignment
obtained from TCMalloc's Arena allocator, the slab may not be exactly aligned
to an integer number of hugepages. To avoid splitting VMAs in a way that would
prohibit hugepage coverage, we round up from below and down from above, noting
the rounding that occurred in the name.
Inactive slabs that have been drained and are held in reserve for potential
future reuse are noted with "drained" in their name.