116e1532b9
ZONE_DMA32 is enabled by default on android14-6.1, yet it is not
needed for all devices, nor is it desirable to have if not needed. For
instance, if a partner in GKI 1.0 did not use ZONE_DMA32, memory can
be lower for ZONE_NORMAL relative to older targets, such that memory
would run out more quickly in ZONE_NORMAL leading kswapd to be invoked
unnecessarily.
Correspondingly, provide a means of making ZONE_DMA32 empty via the
kernel command line when it is compiled in via CONFIG_ZONE_DMA32.
P.S. The following two patches are squashed into this one,
1. bf96382 ("ANDROID: dma-direct: Make DMA32 disablement work for CONFIG_NUMA")
2. 135406c ("ANDROID: dma-direct: Document disable_dma32")
Bug: 199917449
Bug: 268587627
Change-Id: I70ec76914b92e518d61a61072f0b3cb41cb28646
Signed-off-by: Chris Goldsworthy <quic_cgoldswo@quicinc.com>
Signed-off-by: Sudarshan Rajagopalan <quic_sudaraja@quicinc.com>
Signed-off-by: Chinwen Chang <chinwen.chang@mediatek.com>
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| .. | ||
| coherent.c | ||
| contiguous.c | ||
| debug.c | ||
| debug.h | ||
| direct.c | ||
| direct.h | ||
| dummy.c | ||
| Kconfig | ||
| Makefile | ||
| map_benchmark.c | ||
| mapping.c | ||
| ops_helpers.c | ||
| pool.c | ||
| remap.c | ||
| swiotlb.c | ||