This is the last bit of the vmap stack pile. Now that thread_info
is non-magical, we can free the thread stack as soon as the task is
dead (without waiting for RCU) and then, if vmapped stacks are in
use, cache the entire stack for reuse on the same cpu.
This seems to be an overall speedup of
This is the last bit of the vmap stack pile. Now that thread_info
is non-magical, we can free the thread stack as soon as the task is
dead (without waiting for RCU) and then, if vmapped stacks are in
use, cache the entire stack for reuse on the same cpu.
This seems to be an overall speedup of
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