diff options
| author | AKASHI Takahiro <takahiro.akashi@linaro.org> | 2017-04-03 11:24:31 +0900 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2017-04-05 18:26:54 +0100 |
| commit | 8f579b1c4e347b23bfa747bc2cc0a55dd1b7e5fa (patch) | |
| tree | aeb4b6fbc0739e9958ab9a7f718d4a739f30595b /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | c9ca9b4e2198a4dbeb83739460d4a7ff9ffed24f (diff) | |
arm64: limit memory regions based on DT property, usable-memory-range
Crash dump kernel uses only a limited range of available memory as System
RAM. On arm64 kdump, This memory range is advertised to crash dump kernel
via a device-tree property under /chosen,
linux,usable-memory-range = <BASE SIZE>
Crash dump kernel reads this property at boot time and calls
memblock_cap_memory_range() to limit usable memory which are listed either
in UEFI memory map table or "memory" nodes of a device tree blob.
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Reviewed-by: Geoff Levand <geoff@infradead.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions