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CONFIG_PRINTK_SYNC¶
Serialize printk() calls
Type: bool
Help¶
When true, a spinlock will be taken around the output from a single printk() call, preventing the output data from interleaving with concurrent usage from another CPU or an preempting interrupt.
Default¶
y if
SMP&&MP_NUM_CPUS> 1
Kconfig definition¶
At lib/os/Kconfig:64
Included via Kconfig:8 → Kconfig.zephyr:33 → lib/Kconfig:16
Menu path: (Top) → Additional libraries → OS Support Library
config PRINTK_SYNC
bool "Serialize printk() calls"
default y if SMP && MP_NUM_CPUS > 1
help
When true, a spinlock will be taken around the output from a
single printk() call, preventing the output data from
interleaving with concurrent usage from another CPU or an
preempting interrupt.
(The ‘depends on’ condition includes propagated dependencies from ifs and menus.)