starkernel: item 3.2 -- Stadium boot-time allocation
Punch list §25 item 3.2 complete. stadium_boot_init() (src/starkernel/vm/stadium.c) sizes the global cell array at boot from a real memory-budget query rather than a hardcoded count: pmm_get_stats().free_bytes at the point of allocation, times the new STADIUM_MEMORY_PERCENT Kconfig symbol (default 1%), rounded down to whole 64-byte cells. Matches §17.6's position (b) literally. Also allocates the header/continuation discriminator bitmap item 3.1 declared but did not allocate. Both are kmalloc'd and explicitly zero-filled (kmalloc does not zero). Called from kernel_main.c immediately before sk_vm_bootstrap_parity(), i.e. before any VM exists (§6). Failure is soft -- logs and continues, does not halt boot -- matching the existing precedent one line below it (VM bootstrap parity failure does the same). Added a "Stadium: N cells (M KB)" boot console line at the allocation site so the acceptance logs are evidence the array was actually allocated, not just that the kernel still boots -- the same blind spot item 3.1's uncompiled-header gap exposed. Verified: three-architecture boot (amd64, aarch64, riscv64), all reaching ok> with identical dict_hash=0x3d4e1daf289da94f matching the item-3.1 baseline, and the Stadium boot line confirmed present in all three serial logs (amd64: 74234 cells/4639 KB, aarch64: 161329 cells/10083 KB, riscv64: 76122 cells/4757 KB). Not built here, reported per §25.0 rule 3: per-VM free lists (§22.3) -- granted when Hera assigns quota, not this item's scope. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Robert Allan James
co-authored by
Claude Sonnet 5
Claude Sonnet 5
parent
1b2f0677de
commit
eb0fd4fffa
@@ -2705,8 +2705,40 @@ document and committing that amendment as its own item.*
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> with identical `dict_hash=0x3d4e1daf289da94f` -- amd64 (`logs/20260804-151032`), aarch64
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> (`logs/20260804-151115`), riscv64 (`logs/20260804-151222`).
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- [ ] **3.2 — Boot-time allocation.** One global cell array, sized from the memory budget,
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- [x] **3.2 — Boot-time allocation.** One global cell array, sized from the memory budget,
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before any VM exists. *Refs:* §6, §17.6, §22.3.
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> **DONE 2026-08-04.** Sizing ruled by Captain Bob among three options (flat Kconfig
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> constant / runtime PMM-derived / `STADIUM_MAX_VM_COUNT × STADIUM_CELLS_PER_VM`):
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> **runtime PMM-derived**, matching §17.6 position (b) literally rather than position (a),
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> the "arbitrary bound" that section argues against. New `STADIUM_MEMORY_PERCENT` Kconfig
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> symbol (default 1%, ruled by Captain Bob) — `stadium_boot_init()` in `stadium.c` reads
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> `pmm_get_stats().free_bytes` at the point of allocation, takes that percent, rounds down
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> to whole `STADIUM_CELL_BYTES` cells. Both the cell array and the discriminator bitmap
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> item 3.1 declared but did not allocate are `kmalloc`'d here and explicitly zero-filled
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> (`kmalloc` does not zero — checked `kmalloc.c`, no `memset`). Called from
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> `kernel_main.c`, immediately before `sk_vm_bootstrap_parity()` — before any VM exists,
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> per §6. Failure is soft (logs, returns -1, does not halt boot): nothing downstream
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> consumes the Stadium yet, matching the existing precedent one line below it
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> (`sk_vm_bootstrap_parity()`'s own failure path also just logs and continues).
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>
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> **Made observable, by agreement before writing code** (same blind spot the item-3.1
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> uncompiled-header gap exposed): a `Stadium: N cells (M KB)` console line at the
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> allocation site, so the three-arch boot's serial logs are evidence the array was
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> actually allocated at the size intended, not just that the kernel still boots.
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>
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> **Regression: clean, and the boot line confirmed present on all three.** All three
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> architectures boot to `ok>` with identical `dict_hash=0x3d4e1daf289da94f`, matching the
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> item-3.1 baseline. Observed sizes (1% of free memory at the allocation point, this
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> session's QEMU configuration): amd64 74234 cells (4639 KB, `logs/20260804-164332`),
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> aarch64 161329 cells (10083 KB, `logs/20260804-164432`), riscv64 76122 cells (4757 KB,
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> `logs/20260804-164537`). Reported, not evaluated against §23.3's ~4096-cells-per-VM
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> illustrative figure — that figure is itself labeled a proposal to validate, not a target
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> this item is scored against.
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>
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> **Explicitly not built here, reported per §25.0 rule 3:** per-VM free lists (§22.3, "each
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> VM holds its own free-list head index into the global array") — those get granted when
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> Hera assigns a VM its quota, which is not this item's scope.
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- [ ] **3.3 — Behaviour enumeration and dispatch.** Closed tag set fixed at build time.
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Enumerate behaviours, never patron kinds. *Refs:* §13, §18.3.
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- [ ] **3.4 — Density ranking.** Heat ÷ mass, read not computed. *Refs:* §19.2, §19.3.
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@@ -79,6 +79,20 @@ config STADIUM_CAPACITY_TICK
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(FABRIC.md §22.4). No consumer yet -- capacity arbitration
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itself is not yet on the punch list.
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config STADIUM_MEMORY_PERCENT
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int "Percent of free physical memory the Stadium claims at boot (STADIUM_MEMORY_PERCENT)"
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default 1
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help
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The Stadium's global cell array is sized at boot from
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pmm_get_stats().free_bytes, taken at the point of allocation
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(FABRIC.md item 3.2, §17.6 position (b): "sized at boot from the
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memory budget", not a hardcoded cell count). This is the fraction
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of that free-byte figure the array claims, rounded down to whole
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64-byte cells. Default of 1% is conservative -- comfortably clears
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the ~4096-cells-per-VM illustrative figure in FABRIC.md §23.3
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against a QEMU -m 1024 test config while leaving the kernel heap
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and everything else nearly all of physical memory.
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endif # STARFORTH_VARIANT_KERNEL
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endmenu
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@@ -280,6 +280,7 @@ $(eval $(call kconfig_int,HEARTBEAT_INFERENCE_FREQUENCY,1000))
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$(eval $(call kconfig_int,STADIUM_MAX_VM_COUNT,4))
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$(eval $(call kconfig_int,STADIUM_CONTAINS_DEPTH_MAX,5))
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$(eval $(call kconfig_int,STADIUM_CAPACITY_TICK,1000))
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$(eval $(call kconfig_int,STADIUM_MEMORY_PERCENT,1))
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$(eval $(call kconfig_int,SSM_ENTROPY_HIGH_THRESHOLD,0.75))
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$(eval $(call kconfig_int,SSM_CV_HIGH_THRESHOLD,0.15))
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$(eval $(call kconfig_int,SSM_TEMPORAL_DECAY_THRESHOLD,0.5))
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@@ -325,6 +326,7 @@ VM_FEATURE_FLAG_VARS := \
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HEARTBEAT_SLOPE_VALIDATION_FREQUENCY SK_PARITY_DEBUG \
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EMERGENCY_CONSOLE_ENABLED STADIUM_MAX_VM_COUNT \
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STADIUM_CONTAINS_DEPTH_MAX STADIUM_CAPACITY_TICK \
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STADIUM_MEMORY_PERCENT \
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SSM_ENTROPY_HIGH_THRESHOLD SSM_CV_HIGH_THRESHOLD \
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SSM_TEMPORAL_DECAY_THRESHOLD SSM_TEMPORAL_DECAY_LOW_THRESHOLD \
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SSM_HYSTERESIS_TICKS \
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@@ -1,5 +1,5 @@
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# Capsule Block Manifest — Auto-generated
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<!-- Generated by mkcapsule --manifest 2026-08-04T19:12:08Z -->
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<!-- Generated by mkcapsule --manifest 2026-08-04T20:45:23Z -->
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<!-- DO NOT EDIT — re-run mkcapsule --manifest to refresh. -->
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<!-- Hand-written justifications and immutability notes live -->
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<!-- in MANIFEST.md alongside this auto-generated index. -->
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@@ -0,0 +1,59 @@
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@@ -0,0 +1,59 @@
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|
||||
41,410000,10000,0,0,215,64,28,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
42,420000,10000,0,0,208,68,29,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
43,430000,10000,0,0,177,72,27,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
44,440000,10000,0,0,199,77,28,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
45,450000,10000,0,0,223,82,26,4096,30,0,0,0,65536,0,0,65536,0,0
|
||||
46,460000,10000,0,0,202,85,24,4096,67,0,0,0,65536,0,0,65536,0,0
|
||||
47,470000,10000,0,0,218,91,25,4096,198,0,0,0,65536,0,0,65536,0,0
|
||||
48,480000,10000,0,0,221,92,26,4096,350,0,0,0,65536,0,0,65536,0,0
|
||||
49,490000,10000,0,0,225,97,26,4096,528,0,0,0,65536,0,0,65536,0,0
|
||||
50,500000,10000,0,0,214,100,27,4096,694,0,0,0,65536,0,0,65536,0,0
|
||||
51,510000,10000,0,0,227,102,28,4096,883,0,0,0,65536,0,0,65536,0,0
|
||||
52,520000,10000,0,0,208,102,29,4096,1043,0,0,0,65536,0,0,65536,0,0
|
||||
53,530000,10000,0,0,207,102,30,4096,1202,0,0,0,65536,0,0,65536,0,0
|
||||
54,540000,10000,0,0,200,102,31,4096,1319,0,0,0,65536,0,0,65536,0,0
|
||||
55,550000,10000,0,0,205,103,32,4096,1464,0,0,0,65536,0,0,65536,0,0
|
||||
56,560000,10000,0,0,211,103,32,4096,1620,0,0,0,65536,0,0,65536,0,0
|
||||
57,570000,10000,0,0,193,110,33,4096,1712,0,0,0,65536,0,0,65536,0,0
|
||||
58,580000,10000,0,0,190,5,67,4096,1775,0,0,0,65536,0,0,65536,0,0
|
||||
|
@@ -0,0 +1,59 @@
|
||||
tick_number,elapsed_ns,tick_interval_ns,cache_hits_delta,bucket_hits_delta,word_executions_delta,hot_word_count,avg_word_heat_q48,window_width,actual_window_size,predicted_label_hits,jitter_bits,apic_ticks,time_trust_q48,variance_q48,vm_call_depth_max,hera_heat_q48,hermes_heat_q48,artemis_heat_q48
|
||||
1,10000,10000,0,0,183,4,45,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
2,20000,10000,0,0,173,5,44,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
3,30000,10000,0,0,184,6,60,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
4,40000,10000,0,0,174,8,71,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
5,50000,10000,0,0,150,9,78,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
6,60000,10000,0,0,159,11,73,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
7,70000,10000,0,0,188,15,71,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
8,80000,10000,0,0,214,16,83,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
9,90000,10000,0,0,216,19,82,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
10,100000,10000,0,0,222,21,84,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
11,110000,10000,0,0,207,23,86,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
12,120000,10000,0,0,189,26,83,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
13,130000,10000,0,0,221,28,80,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
14,140000,10000,0,0,204,29,83,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
15,150000,10000,0,0,203,30,82,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
16,160000,10000,0,0,201,32,83,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
17,170000,10000,0,0,190,34,86,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
18,180000,10000,0,0,170,35,73,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
19,190000,10000,0,0,154,28,44,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
20,200000,10000,0,0,154,28,41,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
21,210000,10000,0,0,153,32,39,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
22,220000,10000,0,0,167,35,42,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
23,230000,10000,0,0,176,37,41,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
24,240000,10000,0,0,175,37,39,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
25,250000,10000,0,0,196,38,37,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
26,260000,10000,0,0,192,41,37,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
27,270000,10000,0,0,158,40,38,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
28,280000,10000,0,0,158,40,35,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
29,290000,10000,0,0,164,41,37,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
30,300000,10000,0,0,154,43,39,685,685,0,0,0,65536,0,0,65536,0,0
|
||||
31,310000,10000,0,0,172,46,35,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
32,320000,10000,0,0,180,49,34,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
33,330000,10000,0,0,145,51,35,567,567,0,0,0,65536,0,0,65536,0,0
|
||||
34,340000,10000,0,0,203,53,37,582,582,0,0,0,65536,0,0,65536,0,0
|
||||
35,350000,10000,0,0,154,55,39,731,731,0,0,0,65536,0,0,65536,0,0
|
||||
36,360000,10000,0,0,144,57,37,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
37,370000,10000,0,0,144,57,35,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
38,380000,10000,0,0,132,57,34,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
39,390000,10000,0,0,180,57,32,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
40,400000,10000,0,0,220,63,29,4096,0,0,0,0,65536,0,0,65536,0,0
|
||||
41,410000,10000,0,0,215,64,28,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
42,420000,10000,0,0,208,68,29,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
43,430000,10000,0,0,177,72,27,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
44,440000,10000,0,0,199,77,28,4096,24,0,0,0,65536,0,0,65536,0,0
|
||||
45,450000,10000,0,0,223,82,26,4096,30,0,0,0,65536,0,0,65536,0,0
|
||||
46,460000,10000,0,0,202,85,24,4096,67,0,0,0,65536,0,0,65536,0,0
|
||||
47,470000,10000,0,0,218,91,25,4096,198,0,0,0,65536,0,0,65536,0,0
|
||||
48,480000,10000,0,0,221,92,26,4096,350,0,0,0,65536,0,0,65536,0,0
|
||||
49,490000,10000,0,0,225,97,26,4096,528,0,0,0,65536,0,0,65536,0,0
|
||||
50,500000,10000,0,0,214,100,27,4096,694,0,0,0,65536,0,0,65536,0,0
|
||||
51,510000,10000,0,0,227,102,28,4096,883,0,0,0,65536,0,0,65536,0,0
|
||||
52,520000,10000,0,0,208,102,29,4096,1043,0,0,0,65536,0,0,65536,0,0
|
||||
53,530000,10000,0,0,207,102,30,4096,1202,0,0,0,65536,0,0,65536,0,0
|
||||
54,540000,10000,0,0,200,102,31,4096,1319,0,0,0,65536,0,0,65536,0,0
|
||||
55,550000,10000,0,0,205,103,32,4096,1464,0,0,0,65536,0,0,65536,0,0
|
||||
56,560000,10000,0,0,211,103,32,4096,1620,0,0,0,65536,0,0,65536,0,0
|
||||
57,570000,10000,0,0,193,110,33,4096,1712,0,0,0,65536,0,0,65536,0,0
|
||||
58,580000,10000,0,0,190,5,67,4096,1775,0,0,0,65536,0,0,65536,0,0
|
||||
|
@@ -73,6 +73,7 @@
|
||||
#define STARFORTH_CONFIG_STADIUM_MAX_VM_COUNT_DEFAULT 4
|
||||
#define STARFORTH_CONFIG_STADIUM_CONTAINS_DEPTH_MAX_DEFAULT 5
|
||||
#define STARFORTH_CONFIG_STADIUM_CAPACITY_TICK_DEFAULT 1000
|
||||
#define STARFORTH_CONFIG_STADIUM_MEMORY_PERCENT_DEFAULT 1
|
||||
#define STARFORTH_CONFIG_HEARTBEAT_CHECK_FREQUENCY_DEFAULT 256
|
||||
#define STARFORTH_CONFIG_HEARTBEAT_WINDOW_TUNING_FREQUENCY_DEFAULT 1000
|
||||
#define STARFORTH_CONFIG_HEARTBEAT_SLOPE_VALIDATION_FREQUENCY_DEFAULT 5000
|
||||
@@ -170,6 +171,10 @@
|
||||
#define STADIUM_CAPACITY_TICK STARFORTH_CONFIG_STADIUM_CAPACITY_TICK_DEFAULT
|
||||
#endif
|
||||
|
||||
#ifndef STADIUM_MEMORY_PERCENT
|
||||
#define STADIUM_MEMORY_PERCENT STARFORTH_CONFIG_STADIUM_MEMORY_PERCENT_DEFAULT
|
||||
#endif
|
||||
|
||||
#ifndef HEARTBEAT_CHECK_FREQUENCY
|
||||
#define HEARTBEAT_CHECK_FREQUENCY STARFORTH_CONFIG_HEARTBEAT_CHECK_FREQUENCY_DEFAULT
|
||||
#endif
|
||||
|
||||
@@ -34,8 +34,9 @@
|
||||
|
||||
#ifdef __STARKERNEL__
|
||||
|
||||
#include <stddef.h>
|
||||
#include <stdint.h>
|
||||
#include "starforth_config.h" /* STADIUM_CONTAINS_DEPTH_MAX, STADIUM_CAPACITY_TICK */
|
||||
#include "starforth_config.h" /* STADIUM_CONTAINS_DEPTH_MAX, STADIUM_CAPACITY_TICK, STADIUM_MEMORY_PERCENT */
|
||||
|
||||
#define STADIUM_CELL_BYTES 64
|
||||
|
||||
@@ -103,6 +104,40 @@ typedef char stadium_cell_size_check[(sizeof(StadiumCell) == STADIUM_CELL_BYTES)
|
||||
typedef char stadium_contains_depth_configured_check[(STADIUM_CONTAINS_DEPTH_MAX > 0) ? 1 : -1];
|
||||
typedef char stadium_capacity_tick_configured_check[(STADIUM_CAPACITY_TICK > 0) ? 1 : -1];
|
||||
|
||||
/*
|
||||
* stadium_boot_init - Boot-time allocation (FABRIC.md item 3.2, §17.6 position
|
||||
* (b)). Sizes the global cell array from the memory budget actually observed
|
||||
* at boot -- STADIUM_MEMORY_PERCENT of pmm_get_stats().free_bytes at the
|
||||
* point of the call, rounded down to whole STADIUM_CELL_BYTES cells -- rather
|
||||
* than a hardcoded count. Also allocates the header/continuation discriminator
|
||||
* bitmap item 3.1 declared but did not allocate: one bit per cell, bit set
|
||||
* means the cell at that index is a patron header, clear means continuation
|
||||
* or not yet in use. Both are kmalloc'd (freestanding kernel, no separate
|
||||
* PMM-backed region needed for this) and explicitly zero-filled, since
|
||||
* kmalloc does not zero.
|
||||
*
|
||||
* Must be called after M6 (kmalloc_init) and before any VM is born (§6). Does
|
||||
* not halt boot on failure -- nothing downstream consumes the Stadium yet.
|
||||
*
|
||||
* @return 0 on success, -1 if kmalloc failed for either allocation.
|
||||
*/
|
||||
int stadium_boot_init(void);
|
||||
|
||||
/* stadium_is_initialized - Whether stadium_boot_init() has succeeded. */
|
||||
int stadium_is_initialized(void);
|
||||
|
||||
/* stadium_cell_count - Number of cells in the array, 0 if not initialized. */
|
||||
size_t stadium_cell_count(void);
|
||||
|
||||
/* stadium_cells - Pointer to the cell array, NULL if not initialized. */
|
||||
StadiumCell *stadium_cells(void);
|
||||
|
||||
/*
|
||||
* stadium_header_bitmap - Pointer to the discriminator bitmap declared in
|
||||
* item 3.1, NULL if not initialized. ceil(stadium_cell_count() / 8) bytes.
|
||||
*/
|
||||
uint8_t *stadium_header_bitmap(void);
|
||||
|
||||
#endif /* __STARKERNEL__ */
|
||||
|
||||
#endif /* STARKERNEL_VM_STADIUM_H */
|
||||
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
@@ -52,6 +52,7 @@ EFI_RUNTIME_SERVICES *g_sk_runtime_services = NULL;
|
||||
#ifdef STARFORTH_ENABLE_VM
|
||||
#include "starkernel/vm/bootstrap/sk_vm_bootstrap.h"
|
||||
#include "starkernel/vm/parity.h"
|
||||
#include "starkernel/vm/stadium.h"
|
||||
#include "starkernel/capsule_generated.h"
|
||||
#include "starkernel/capsule_loader.h"
|
||||
#include "starkernel/capsule_birth.h" /* capsule_birth_mama, capsule_find_mama_init */
|
||||
@@ -478,6 +479,11 @@ static void kernel_main_deep(BootInfo *boot_info) {
|
||||
console_println("Boot successful!\n");
|
||||
|
||||
#ifdef STARFORTH_ENABLE_VM
|
||||
/* Stadium: boot-time allocation (FABRIC.md item 3.2), before any VM
|
||||
* exists (§6). Soft failure -- nothing downstream consumes the Stadium
|
||||
* yet, so a failed allocation logs and boot continues. */
|
||||
(void)stadium_boot_init();
|
||||
|
||||
/* M7: VM Bootstrap and Parity Validation */
|
||||
console_println("VM: bootstrap parity...");
|
||||
ParityPacket parity_pkt;
|
||||
|
||||
@@ -22,12 +22,102 @@
|
||||
*/
|
||||
|
||||
/**
|
||||
* stadium.c - Translation unit for the Stadium cell definitions (item 3.1).
|
||||
* stadium.c - The Stadium cell definitions (item 3.1) and boot-time
|
||||
* allocation (item 3.2).
|
||||
*
|
||||
* Exists so stadium.h's compile-time size assertions are actually compiled
|
||||
* on all three architectures, not merely included by something that never
|
||||
* builds. No behavior yet -- item 3.2 onward adds the array, dispatch, and
|
||||
* ranking.
|
||||
* Also the translation unit that makes stadium.h's compile-time assertions
|
||||
* actually get compiled on all three architectures, not merely included by
|
||||
* something that never builds.
|
||||
*/
|
||||
|
||||
#include "starkernel/vm/stadium.h"
|
||||
#include "starkernel/vm/stadium.h"
|
||||
|
||||
#ifdef __STARKERNEL__
|
||||
|
||||
#include "starkernel/kmalloc.h"
|
||||
#include "starkernel/pmm.h"
|
||||
#include "starkernel/console.h"
|
||||
|
||||
static StadiumCell *stadium_cell_array = (StadiumCell *)0;
|
||||
static uint8_t *stadium_bitmap = (uint8_t *)0;
|
||||
static size_t stadium_ncells = 0;
|
||||
static int stadium_initialized = 0;
|
||||
|
||||
/* Freestanding: no libc printf. Prints an unsigned decimal, no leading zeros. */
|
||||
static void console_put_u64(uint64_t v) {
|
||||
char buf[21];
|
||||
int i = 20;
|
||||
buf[20] = '\0';
|
||||
if (v == 0) {
|
||||
console_puts("0");
|
||||
return;
|
||||
}
|
||||
while (v > 0 && i > 0) {
|
||||
buf[--i] = (char)('0' + (v % 10));
|
||||
v /= 10;
|
||||
}
|
||||
console_puts(&buf[i]);
|
||||
}
|
||||
|
||||
int stadium_boot_init(void) {
|
||||
pmm_stats_t pmm = pmm_get_stats();
|
||||
uint64_t budget_bytes = (pmm.free_bytes * (uint64_t)STADIUM_MEMORY_PERCENT) / 100u;
|
||||
size_t ncells = (size_t)(budget_bytes / STADIUM_CELL_BYTES);
|
||||
size_t bitmap_bytes = (ncells + 7u) / 8u;
|
||||
|
||||
if (ncells == 0) {
|
||||
console_println("Stadium: boot-time allocation skipped (0 cells from memory budget)");
|
||||
return -1;
|
||||
}
|
||||
|
||||
StadiumCell *cells = (StadiumCell *)kmalloc(ncells * STADIUM_CELL_BYTES);
|
||||
uint8_t *bitmap = (uint8_t *)kmalloc(bitmap_bytes);
|
||||
if (!cells || !bitmap) {
|
||||
console_println("Stadium: kmalloc failed for boot-time allocation");
|
||||
if (cells) kfree(cells);
|
||||
if (bitmap) kfree(bitmap);
|
||||
return -1;
|
||||
}
|
||||
|
||||
{
|
||||
uint8_t *raw = (uint8_t *)cells;
|
||||
size_t n = ncells * STADIUM_CELL_BYTES;
|
||||
size_t i;
|
||||
for (i = 0; i < n; i++) raw[i] = 0;
|
||||
}
|
||||
{
|
||||
size_t i;
|
||||
for (i = 0; i < bitmap_bytes; i++) bitmap[i] = 0;
|
||||
}
|
||||
|
||||
stadium_cell_array = cells;
|
||||
stadium_bitmap = bitmap;
|
||||
stadium_ncells = ncells;
|
||||
stadium_initialized = 1;
|
||||
|
||||
console_puts("Stadium: ");
|
||||
console_put_u64((uint64_t)ncells);
|
||||
console_puts(" cells (");
|
||||
console_put_u64((uint64_t)(ncells * STADIUM_CELL_BYTES) / 1024u);
|
||||
console_println(" KB)");
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int stadium_is_initialized(void) {
|
||||
return stadium_initialized;
|
||||
}
|
||||
|
||||
size_t stadium_cell_count(void) {
|
||||
return stadium_ncells;
|
||||
}
|
||||
|
||||
StadiumCell *stadium_cells(void) {
|
||||
return stadium_cell_array;
|
||||
}
|
||||
|
||||
uint8_t *stadium_header_bitmap(void) {
|
||||
return stadium_bitmap;
|
||||
}
|
||||
|
||||
#endif /* __STARKERNEL__ */
|
||||
Reference in New Issue
Block a user