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dd7c983e78
If ICACHE_INS is not supported, we use IPI to sync icache on each core. But ftrace_modify_code is called from stop_machine from default implementation of arch_ftrace_update_code and stop_machine callback is irq_disabled. When you call ipi with irq_disabled, a deadlock will happen. We couldn't use icache_flush with irq_disabled, but startup make_nop is specific case and it needn't ipi other cores. Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
120 lines
2.6 KiB
120 lines
2.6 KiB