hakmem/core/superslab_head_stub.c

// superslab_head_stub.c - Legacy SuperSlabHead stubs
// Purpose: Provide minimal symbols for legacy SuperSlabHead API while
//          the full implementation is archived.
//
// Notes:
//   - The real SuperSlabHead implementation lives in
//       archive/superslab_head_legacy.c
//   - Current backend uses shared pool + LRU Box; g_superslab_heads is no
//     longer populated in production paths.
//   - These stubs keep the ABI/linkage stable and are effectively no-ops.

#include "hakmem_tiny_superslab_internal.h"

SuperSlabHead* g_superslab_heads[TINY_NUM_CLASSES_SS] = {NULL};

SuperSlabHead* init_superslab_head(int class_idx)
{
    (void)class_idx;
    return NULL;
}

int expand_superslab_head(SuperSlabHead* head)
{
    (void)head;
    // No legacy expansion; shared pool backend handles growth.
    return -1;
}

SuperSlab* find_chunk_for_ptr(void* ptr, int class_idx)
{
    (void)ptr;
    (void)class_idx;
    return NULL;
}

void remove_superslab_from_legacy_head(SuperSlab* ss)
{
    (void)ss;
    // Legacy list is unused; nothing to do.
}