Why not distribute timer handlers on CPUs on SMP

[bhs]

Hello,

I am just curious about why handle the timer functions on a CPU serially but not distribute them over CPUs
even on a SMP system?

The timer wheel handler function __run_timers() serializes the timer functions on a CPU,
is there any design consideration that handling timers on a CPU is more reasonable than distribute them
over CPUs?


Best regards
Shan Hai--
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