refactor: move runtime code to crate::rt

[mkroening]

Private imports at the crate root are visible to any children. This leads rust-analyzer to import crate::arch::kernel from crate::kernel by default.

This PR moves all functions from crate (lib.rs) to crate::rt (rt.rs) to avoid any unwanted private reexports from the crate root.

[github-actions]

Benchmark Results

Details

Benchmark	Current: 1322a61	Previous: 2e23902	Performance Ratio
startup_benchmark Build Time	84.60 s	80.34 s	1.05 ❗
startup_benchmark File Size	0.76 MB	0.80 MB	0.96 ❗
Startup Time - 1 core	0.75 s (±0.02 s)	0.75 s (±0.02 s)	1.00
Startup Time - 2 cores	0.77 s (±0.02 s)	0.74 s (±0.02 s)	1.04
Startup Time - 4 cores	0.77 s (±0.02 s)	0.74 s (±0.02 s)	1.04
multithreaded_benchmark Build Time	80.40 s	82.11 s	0.98 ❗
multithreaded_benchmark File Size	0.87 MB	0.86 MB	1.02 ❗
Multithreaded Pi Efficiency - 2 Threads	90.15 % (±7.34 %)	85.89 % (±6.61 %)	1.05
Multithreaded Pi Efficiency - 4 Threads	44.72 % (±2.34 %)	43.43 % (±2.56 %)	1.03
Multithreaded Pi Efficiency - 8 Threads	25.74 % (±1.45 %)	25.76 % (±1.53 %)	1.00
micro_benchmarks Build Time	77.52 s	80.40 s	0.96 ❗
micro_benchmarks File Size	0.88 MB	0.86 MB	1.02 ❗
Scheduling time - 1 thread	64.54 ticks (±2.69 ticks)	62.65 ticks (±4.06 ticks)	1.03
Scheduling time - 2 threads	35.79 ticks (±4.07 ticks)	34.08 ticks (±4.10 ticks)	1.05
Micro - Time for syscall (getpid)	4.34 ticks (±0.87 ticks)	3.45 ticks (±0.58 ticks)	1.26
Memcpy speed - (built_in) block size 4096	84792.21 MByte/s (±58530.66 MByte/s)	82448.38 MByte/s (±56997.13 MByte/s)	1.03
Memcpy speed - (built_in) block size 1048576	30589.70 MByte/s (±24698.58 MByte/s)	30585.98 MByte/s (±24707.84 MByte/s)	1.00
Memcpy speed - (built_in) block size 16777216	29440.76 MByte/s (±24206.30 MByte/s)	26340.06 MByte/s (±21720.96 MByte/s)	1.12
Memset speed - (built_in) block size 4096	84871.23 MByte/s (±58588.01 MByte/s)	82292.76 MByte/s (±56891.50 MByte/s)	1.03
Memset speed - (built_in) block size 1048576	31325.40 MByte/s (±25132.27 MByte/s)	31323.85 MByte/s (±25145.86 MByte/s)	1.00
Memset speed - (built_in) block size 16777216	30201.30 MByte/s (±24643.15 MByte/s)	27104.68 MByte/s (±22209.94 MByte/s)	1.11
Memcpy speed - (rust) block size 4096	76059.26 MByte/s (±53003.67 MByte/s)	74097.96 MByte/s (±51811.44 MByte/s)	1.03
Memcpy speed - (rust) block size 1048576	30341.68 MByte/s (±24511.03 MByte/s)	30361.60 MByte/s (±24602.37 MByte/s)	1.00
Memcpy speed - (rust) block size 16777216	29423.72 MByte/s (±24187.64 MByte/s)	27625.34 MByte/s (±22806.88 MByte/s)	1.07
Memset speed - (rust) block size 4096	76600.38 MByte/s (±53388.20 MByte/s)	74373.47 MByte/s (±51976.48 MByte/s)	1.03
Memset speed - (rust) block size 1048576	31073.04 MByte/s (±24957.75 MByte/s)	31110.89 MByte/s (±25033.24 MByte/s)	1.00
Memset speed - (rust) block size 16777216	30187.65 MByte/s (±24625.62 MByte/s)	28386.93 MByte/s (±23265.03 MByte/s)	1.06
alloc_benchmarks Build Time	77.32 s	74.76 s	1.03 ❗
alloc_benchmarks File Size	0.84 MB	0.87 MB	0.96 ❗
Allocations - Allocation success	91.34 %	91.31 %	1.00 ❗
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	61.54 %	61.44 %	1.00 ❗
Allocations - Average Allocation time	4260.72 Ticks (±123.88 Ticks)	5860.58 Ticks (±98.43 Ticks)	0.73 ❗
Allocations - Average Allocation time (no fail)	5061.38 Ticks (±131.76 Ticks)	6554.81 Ticks (±92.86 Ticks)	0.77 ❗
Allocations - Average Deallocation time	991.15 Ticks (±237.59 Ticks)	1805.01 Ticks (±250.35 Ticks)	0.55 ❗
mutex_benchmark Build Time	76.37 s	79.82 s	0.96 ❗
mutex_benchmark File Size	0.88 MB	0.86 MB	1.02 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	12.18 ns (±0.48 ns)	12.10 ns (±0.41 ns)	1.01
Mutex Stress Test Average Time per Iteration - 2 Threads	39.66 ns (±2.29 ns)	40.26 ns (±1.68 ns)	0.99

This comment was automatically generated by workflow using github-action-benchmark.