MAX_RESERVED_REGIONS has changed several times. Max reserved regions count grows bigger as more SOC subsystems require reserved regions. Add a Kconfig for it so that when properly configured, the static reserved_mem array consumes less memory on systems with few reserved regions. Signed-off-by: Calvin Zhang <calvinzhang.cool@xxxxxxxxx> --- drivers/of/Kconfig | 10 ++++++++++ drivers/of/of_reserved_mem.c | 3 +-- 2 files changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/of/Kconfig b/drivers/of/Kconfig index 80b5fd44ab1c..47ffff9f6aba 100644 --- a/drivers/of/Kconfig +++ b/drivers/of/Kconfig @@ -73,6 +73,16 @@ config OF_IRQ config OF_RESERVED_MEM def_bool OF_EARLY_FLATTREE +config OF_MAX_RESERVED_REGIONS + int "Maximum count of reserved regions" + depends on OF_RESERVED_MEM + default 64 + help + Reserved regions in /reserved-memory node includes static + reservations with fixed location and dynamic ones for device + CMA regions. This parameter sets the maximum number of reserved + regions in the system. + config OF_RESOLVE bool diff --git a/drivers/of/of_reserved_mem.c b/drivers/of/of_reserved_mem.c index 9c0fb962c22b..d90ae4c03011 100644 --- a/drivers/of/of_reserved_mem.c +++ b/drivers/of/of_reserved_mem.c @@ -25,8 +25,7 @@ #include "of_private.h" -#define MAX_RESERVED_REGIONS 64 -static struct reserved_mem reserved_mem[MAX_RESERVED_REGIONS]; +static struct reserved_mem reserved_mem[CONFIG_OF_MAX_RESERVED_REGIONS]; static int reserved_mem_count; static int __init early_init_dt_alloc_reserved_memory_arch(phys_addr_t size, -- 2.30.2
