cregit-Linux how code gets into the kernel

Release 4.16 mm/slob.c

Directory: mm
// SPDX-License-Identifier: GPL-2.0
/*
 * SLOB Allocator: Simple List Of Blocks
 *
 * Matt Mackall <mpm@selenic.com> 12/30/03
 *
 * NUMA support by Paul Mundt, 2007.
 *
 * How SLOB works:
 *
 * The core of SLOB is a traditional K&R style heap allocator, with
 * support for returning aligned objects. The granularity of this
 * allocator is as little as 2 bytes, however typically most architectures
 * will require 4 bytes on 32-bit and 8 bytes on 64-bit.
 *
 * The slob heap is a set of linked list of pages from alloc_pages(),
 * and within each page, there is a singly-linked list of free blocks
 * (slob_t). The heap is grown on demand. To reduce fragmentation,
 * heap pages are segregated into three lists, with objects less than
 * 256 bytes, objects less than 1024 bytes, and all other objects.
 *
 * Allocation from heap involves first searching for a page with
 * sufficient free blocks (using a next-fit-like approach) followed by
 * a first-fit scan of the page. Deallocation inserts objects back
 * into the free list in address order, so this is effectively an
 * address-ordered first fit.
 *
 * Above this is an implementation of kmalloc/kfree. Blocks returned
 * from kmalloc are prepended with a 4-byte header with the kmalloc size.
 * If kmalloc is asked for objects of PAGE_SIZE or larger, it calls
 * alloc_pages() directly, allocating compound pages so the page order
 * does not have to be separately tracked.
 * These objects are detected in kfree() because PageSlab()
 * is false for them.
 *
 * SLAB is emulated on top of SLOB by simply calling constructors and
 * destructors for every SLAB allocation. Objects are returned with the
 * 4-byte alignment unless the SLAB_HWCACHE_ALIGN flag is set, in which
 * case the low-level allocator will fragment blocks to create the proper
 * alignment. Again, objects of page-size or greater are allocated by
 * calling alloc_pages(). As SLAB objects know their size, no separate
 * size bookkeeping is necessary and there is essentially no allocation
 * space overhead, and compound pages aren't needed for multi-page
 * allocations.
 *
 * NUMA support in SLOB is fairly simplistic, pushing most of the real
 * logic down to the page allocator, and simply doing the node accounting
 * on the upper levels. In the event that a node id is explicitly
 * provided, __alloc_pages_node() with the specified node id is used
 * instead. The common case (or when the node id isn't explicitly provided)
 * will default to the current node, as per numa_node_id().
 *
 * Node aware pages are still inserted in to the global freelist, and
 * these are scanned for by matching against the node id encoded in the
 * page flags. As a result, block allocations that can be satisfied from
 * the freelist will only be done so on pages residing on the same node,
 * in order to prevent random node placement.
 */

#include <linux/kernel.h>
#include <linux/slab.h>

#include <linux/mm.h>
#include <linux/swap.h> /* struct reclaim_state */
#include <linux/cache.h>
#include <linux/init.h>
#include <linux/export.h>
#include <linux/rcupdate.h>
#include <linux/list.h>
#include <linux/kmemleak.h>

#include <trace/events/kmem.h>

#include <linux/atomic.h>

#include "slab.h"
/*
 * slob_block has a field 'units', which indicates size of block if +ve,
 * or offset of next block if -ve (in SLOB_UNITs).
 *
 * Free blocks of size 1 unit simply contain the offset of the next block.
 * Those with larger size contain their size in the first SLOB_UNIT of
 * memory, and the offset of the next free block in the second SLOB_UNIT.
 */
#if PAGE_SIZE <= (32767 * 2)

typedef s16 slobidx_t;
#else

typedef s32 slobidx_t;
#endif


struct slob_block {
	
slobidx_t units;
};

typedef struct slob_block slob_t;

/*
 * All partially free slob pages go on these lists.
 */

#define SLOB_BREAK1 256

#define SLOB_BREAK2 1024
static LIST_HEAD(free_slob_small);
static LIST_HEAD(free_slob_medium);
static LIST_HEAD(free_slob_large);

/*
 * slob_page_free: true for pages on free_slob_pages list.
 */

static inline int slob_page_free(struct page *sp) { return PageSlobFree(sp); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin1688.89%133.33%
Andy Whitcroft15.56%133.33%
Christoph Lameter15.56%133.33%
Total18100.00%3100.00%


static void set_slob_page_free(struct page *sp, struct list_head *list) { list_add(&sp->lru, list); __SetPageSlobFree(sp); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin1961.29%116.67%
Matt Mackall929.03%233.33%
Andy Whitcroft13.23%116.67%
Dave Hansen13.23%116.67%
Christoph Lameter13.23%116.67%
Total31100.00%6100.00%


static inline void clear_slob_page_free(struct page *sp) { list_del(&sp->lru); __ClearPageSlobFree(sp); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin2184.00%120.00%
Andy Whitcroft14.00%120.00%
Dave Hansen14.00%120.00%
Christoph Lameter14.00%120.00%
Matt Mackall14.00%120.00%
Total25100.00%5100.00%

#define SLOB_UNIT sizeof(slob_t) #define SLOB_UNITS(size) DIV_ROUND_UP(size, SLOB_UNIT) /* * struct slob_rcu is inserted at the tail of allocated slob blocks, which * were created with a SLAB_TYPESAFE_BY_RCU slab. slob_rcu is used to free * the block using call_rcu. */ struct slob_rcu { struct rcu_head head; int size; }; /* * slob_lock protects all slob allocator structures. */ static DEFINE_SPINLOCK(slob_lock); /* * Encode the given size and next info into a free slob block s. */
static void set_slob(slob_t *s, slobidx_t size, slob_t *next) { slob_t *base = (slob_t *)((unsigned long)s & PAGE_MASK); slobidx_t offset = next - base; if (size > 1) { s[0].units = size; s[1].units = offset; } else s[0].units = -offset; }

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Nicholas Piggin7898.73%150.00%
Matt Mackall11.27%150.00%
Total79100.00%2100.00%

/* * Return the size of a slob block. */
static slobidx_t slob_units(slob_t *s) { if (s->units > 0) return s->units; return 1; }

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Nicholas Piggin26100.00%1100.00%
Total26100.00%1100.00%

/* * Return the next free slob block pointer after this one. */
static slob_t *slob_next(slob_t *s) { slob_t *base = (slob_t *)((unsigned long)s & PAGE_MASK); slobidx_t next; if (s[0].units < 0) next = -s[0].units; else next = s[1].units; return base+next; }

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PersonTokensPropCommitsCommitProp
Nicholas Piggin68100.00%1100.00%
Total68100.00%1100.00%

/* * Returns true if s is the last free block in its page. */
static int slob_last(slob_t *s) { return !((unsigned long)slob_next(s) & ~PAGE_MASK); }

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Nicholas Piggin26100.00%1100.00%
Total26100.00%1100.00%


static void *slob_new_pages(gfp_t gfp, int order, int node) { void *page; #ifdef CONFIG_NUMA if (node != NUMA_NO_NODE) page = __alloc_pages_node(node, gfp, order); else #endif page = alloc_pages(gfp, order); if (!page) return NULL; return page_address(page); }

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PersonTokensPropCommitsCommitProp
Paul Mundt6395.45%125.00%
Ezequiel García11.52%125.00%
Américo Wang11.52%125.00%
Vlastimil Babka11.52%125.00%
Total66100.00%4100.00%


static void slob_free_pages(void *b, int order) { if (current->reclaim_state) current->reclaim_state->reclaimed_slab += 1 << order; free_pages((unsigned long)b, order); }

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Américo Wang2460.00%150.00%
Nicholas Piggin1640.00%150.00%
Total40100.00%2100.00%

/* * Allocate a slob block within a given slob_page sp. */
static void *slob_page_alloc(struct page *sp, size_t size, int align) { slob_t *prev, *cur, *aligned = NULL; int delta = 0, units = SLOB_UNITS(size); for (prev = NULL, cur = sp->freelist; ; prev = cur, cur = slob_next(cur)) { slobidx_t avail = slob_units(cur); if (align) { aligned = (slob_t *)ALIGN((unsigned long)cur, align); delta = aligned - cur; } if (avail >= units + delta) { /* room enough? */ slob_t *next; if (delta) { /* need to fragment head to align? */ next = slob_next(cur); set_slob(aligned, avail - delta, next); set_slob(cur, delta, aligned); prev = cur; cur = aligned; avail = slob_units(cur); } next = slob_next(cur); if (avail == units) { /* exact fit? unlink. */ if (prev) set_slob(prev, slob_units(prev), next); else sp->freelist = next; } else { /* fragment */ if (prev) set_slob(prev, slob_units(prev), cur + units); else sp->freelist = cur + units; set_slob(cur + units, avail - units, next); } sp->units -= units; if (!sp->units) clear_slob_page_free(sp); return cur; } if (slob_last(cur)) return NULL; } }

Contributors

PersonTokensPropCommitsCommitProp
Matt Mackall14751.94%125.00%
Nicholas Piggin13146.29%125.00%
Christoph Lameter41.41%125.00%
Américo Wang10.35%125.00%
Total283100.00%4100.00%

/* * slob_alloc: entry point into the slob allocator. */
static void *slob_alloc(size_t size, gfp_t gfp, int align, int node) { struct page *sp; struct list_head *prev; struct list_head *slob_list; slob_t *b = NULL; unsigned long flags; if (size < SLOB_BREAK1) slob_list = &free_slob_small; else if (size < SLOB_BREAK2) slob_list = &free_slob_medium; else slob_list = &free_slob_large; spin_lock_irqsave(&slob_lock, flags); /* Iterate through each partially free page, try to find room */ list_for_each_entry(sp, slob_list, lru) { #ifdef CONFIG_NUMA /* * If there's a node specification, search for a partial * page with a matching node id in the freelist. */ if (node != NUMA_NO_NODE && page_to_nid(sp) != node) continue; #endif /* Enough room on this page? */ if (sp->units < SLOB_UNITS(size)) continue; /* Attempt to alloc */ prev = sp->lru.prev; b = slob_page_alloc(sp, size, align); if (!b) continue; /* Improve fragment distribution and reduce our average * search time by starting our next search here. (see * Knuth vol 1, sec 2.5, pg 449) */ if (prev != slob_list->prev && slob_list->next != prev->next) list_move_tail(slob_list, prev->next); break; } spin_unlock_irqrestore(&slob_lock, flags); /* Not enough space: must allocate a new page */ if (!b) { b = slob_new_pages(gfp & ~__GFP_ZERO, 0, node); if (!b) return NULL; sp = virt_to_page(b); __SetPageSlab(sp); spin_lock_irqsave(&slob_lock, flags); sp->units = SLOB_UNITS(PAGE_SIZE); sp->freelist = b; INIT_LIST_HEAD(&sp->lru); set_slob(b, SLOB_UNITS(PAGE_SIZE), b + SLOB_UNITS(PAGE_SIZE)); set_slob_page_free(sp, slob_list); b = slob_page_alloc(sp, size, align); BUG_ON(!b); spin_unlock_irqrestore(&slob_lock, flags); } if (unlikely(gfp & __GFP_ZERO)) memset(b, 0, size); return b; }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin16048.63%215.38%
Matt Mackall11234.04%323.08%
Paul Mundt267.90%17.69%
Christoph Lameter226.69%323.08%
Linus Torvalds30.91%17.69%
Dave Hansen30.91%17.69%
Américo Wang20.61%17.69%
Ezequiel García10.30%17.69%
Total329100.00%13100.00%

/* * slob_free: entry point into the slob allocator. */
static void slob_free(void *block, int size) { struct page *sp; slob_t *prev, *next, *b = (slob_t *)block; slobidx_t units; unsigned long flags; struct list_head *slob_list; if (unlikely(ZERO_OR_NULL_PTR(block))) return; BUG_ON(!size); sp = virt_to_page(block); units = SLOB_UNITS(size); spin_lock_irqsave(&slob_lock, flags); if (sp->units + units == SLOB_UNITS(PAGE_SIZE)) { /* Go directly to page allocator. Do not pass slob allocator */ if (slob_page_free(sp)) clear_slob_page_free(sp); spin_unlock_irqrestore(&slob_lock, flags); __ClearPageSlab(sp); page_mapcount_reset(sp); slob_free_pages(b, 0); return; } if (!slob_page_free(sp)) { /* This slob page is about to become partially free. Easy! */ sp->units = units; sp->freelist = b; set_slob(b, units, (void *)((unsigned long)(b + SLOB_UNITS(PAGE_SIZE)) & PAGE_MASK)); if (size < SLOB_BREAK1) slob_list = &free_slob_small; else if (size < SLOB_BREAK2) slob_list = &free_slob_medium; else slob_list = &free_slob_large; set_slob_page_free(sp, slob_list); goto out; } /* * Otherwise the page is already partially free, so find reinsertion * point. */ sp->units += units; if (b < (slob_t *)sp->freelist) { if (b + units == sp->freelist) { units += slob_units(sp->freelist); sp->freelist = slob_next(sp->freelist); } set_slob(b, units, sp->freelist); sp->freelist = b; } else { prev = sp->freelist; next = slob_next(prev); while (b > next) { prev = next; next = slob_next(prev); } if (!slob_last(prev) && b + units == next) { units += slob_units(next); set_slob(b, units, slob_next(next)); } else set_slob(b, units, next); if (prev + slob_units(prev) == b) { units = slob_units(b) + slob_units(prev); set_slob(prev, units, slob_next(b)); } else set_slob(prev, slob_units(prev), b); } out: spin_unlock_irqrestore(&slob_lock, flags); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin24455.58%325.00%
Matt Mackall13731.21%325.00%
Bob Liu357.97%18.33%
Christoph Lameter194.33%325.00%
Satyam Sharma30.68%18.33%
Mel Gorman10.23%18.33%
Total439100.00%12100.00%

/* * End of slob allocator proper. Begin kmem_cache_alloc and kmalloc frontend. */
static __always_inline void * __do_kmalloc_node(size_t size, gfp_t gfp, int node, unsigned long caller) { unsigned int *m; int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); void *ret; gfp &= gfp_allowed_mask; fs_reclaim_acquire(gfp); fs_reclaim_release(gfp); if (size < PAGE_SIZE - align) { if (!size) return ZERO_SIZE_PTR; m = slob_alloc(size + align, gfp, align, node); if (!m) return NULL; *m = size; ret = (void *)m + align; trace_kmalloc_node(caller, ret, size, size + align, gfp, node); } else { unsigned int order = get_order(size); if (likely(order)) gfp |= __GFP_COMP; ret = slob_new_pages(gfp, order, node); trace_kmalloc_node(caller, ret, size, PAGE_SIZE << order, gfp, node); } kmemleak_alloc(ret, size, 1, gfp); return ret; }

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PersonTokensPropCommitsCommitProp
Eduard - Gabriel Munteanu4824.74%211.11%
Matt Mackall4221.65%15.56%
Nicholas Piggin3317.01%422.22%
Christoph Lameter136.70%15.56%
David Rientjes126.19%15.56%
Catalin Marinas115.67%15.56%
Ezequiel García94.64%15.56%
Paul Mundt73.61%15.56%
Peter Zijlstra63.09%15.56%
MinChan Kim42.06%15.56%
Steven Rostedt42.06%15.56%
Arnd Bergmann31.55%15.56%
Américo Wang10.52%15.56%
Ingo Molnar10.52%15.56%
Total194100.00%18100.00%


void *__kmalloc(size_t size, gfp_t gfp) { return __do_kmalloc_node(size, gfp, NUMA_NO_NODE, _RET_IP_); }

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Ezequiel García2291.67%150.00%
Christoph Lameter28.33%150.00%
Total24100.00%2100.00%

EXPORT_SYMBOL(__kmalloc);
void *__kmalloc_track_caller(size_t size, gfp_t gfp, unsigned long caller) { return __do_kmalloc_node(size, gfp, NUMA_NO_NODE, caller); }

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Ezequiel García28100.00%1100.00%
Total28100.00%1100.00%

#ifdef CONFIG_NUMA
void *__kmalloc_node_track_caller(size_t size, gfp_t gfp, int node, unsigned long caller) { return __do_kmalloc_node(size, gfp, node, caller); }

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PersonTokensPropCommitsCommitProp
Ezequiel García3096.77%150.00%
David Rientjes13.23%150.00%
Total31100.00%2100.00%

#endif
void kfree(const void *block) { struct page *sp; trace_kfree(_RET_IP_, block); if (unlikely(ZERO_OR_NULL_PTR(block))) return; kmemleak_free(block); sp = virt_to_page(block); if (PageSlab(sp)) { int align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); unsigned int *m = (unsigned int *)(block - align); slob_free(m, *m + align); } else __free_pages(sp, compound_order(sp)); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin4745.63%325.00%
Matt Mackall2625.24%18.33%
Pekka J Enberg76.80%18.33%
Ezequiel García65.83%18.33%
Christoph Lameter65.83%325.00%
Catalin Marinas54.85%18.33%
Satyam Sharma32.91%18.33%
Arnd Bergmann32.91%18.33%
Total103100.00%12100.00%

EXPORT_SYMBOL(kfree); /* can't use ksize for kmem_cache_alloc memory, only kmalloc */
size_t ksize(const void *block) { struct page *sp; int align; unsigned int *m; BUG_ON(!block); if (unlikely(block == ZERO_SIZE_PTR)) return 0; sp = virt_to_page(block); if (unlikely(!PageSlab(sp))) return PAGE_SIZE << compound_order(sp); align = max_t(size_t, ARCH_KMALLOC_MINALIGN, ARCH_SLAB_MINALIGN); m = (unsigned int *)(block - align); return SLOB_UNITS(*m) * SLOB_UNIT; }

Contributors

PersonTokensPropCommitsCommitProp
Matt Mackall4444.00%327.27%
Ezequiel García2424.00%19.09%
Nicholas Piggin1414.00%19.09%
Christoph Lameter1111.00%327.27%
Satyam Sharma33.00%19.09%
Arnd Bergmann33.00%19.09%
Pekka J Enberg11.00%19.09%
Total100100.00%11100.00%

EXPORT_SYMBOL(ksize);
int __kmem_cache_create(struct kmem_cache *c, slab_flags_t flags) { if (flags & SLAB_TYPESAFE_BY_RCU) { /* leave room for rcu footer at the end of object */ c->size += sizeof(struct slob_rcu); } c->flags = flags; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin2458.54%116.67%
Matt Mackall1126.83%116.67%
Christoph Lameter49.76%233.33%
Alexey Dobriyan12.44%116.67%
Paul E. McKenney12.44%116.67%
Total41100.00%6100.00%


static void *slob_alloc_node(struct kmem_cache *c, gfp_t flags, int node) { void *b; flags &= gfp_allowed_mask; fs_reclaim_acquire(flags); fs_reclaim_release(flags); if (c->size < PAGE_SIZE) { b = slob_alloc(c->size, flags, c->align, node); trace_kmem_cache_alloc_node(_RET_IP_, b, c->object_size, SLOB_UNITS(c->size) * SLOB_UNIT, flags, node); } else { b = slob_new_pages(flags, get_order(c->size), node); trace_kmem_cache_alloc_node(_RET_IP_, b, c->object_size, PAGE_SIZE << get_order(c->size), flags, node); } if (b && c->ctor) c->ctor(b); kmemleak_alloc_recursive(b, c->size, 1, c->flags, flags); return b; }

Contributors

PersonTokensPropCommitsCommitProp
Matt Mackall6841.21%17.14%
Eduard - Gabriel Munteanu5030.30%214.29%
Catalin Marinas1710.30%17.14%
Steven Rostedt106.06%214.29%
Paul Mundt74.24%17.14%
Peter Zijlstra63.64%17.14%
Christoph Lameter21.21%214.29%
Ezequiel García21.21%17.14%
Américo Wang10.61%17.14%
Akinobu Mita10.61%17.14%
Fabian Frederick10.61%17.14%
Total165100.00%14100.00%


void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags) { return slob_alloc_node(cachep, flags, NUMA_NO_NODE); }

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PersonTokensPropCommitsCommitProp
Christoph Lameter24100.00%1100.00%
Total24100.00%1100.00%

EXPORT_SYMBOL(kmem_cache_alloc); #ifdef CONFIG_NUMA
void *__kmalloc_node(size_t size, gfp_t gfp, int node) { return __do_kmalloc_node(size, gfp, node, _RET_IP_); }

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PersonTokensPropCommitsCommitProp
Christoph Lameter27100.00%1100.00%
Total27100.00%1100.00%

EXPORT_SYMBOL(__kmalloc_node);
void *kmem_cache_alloc_node(struct kmem_cache *cachep, gfp_t gfp, int node) { return slob_alloc_node(cachep, gfp, node); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter27100.00%1100.00%
Total27100.00%1100.00%

EXPORT_SYMBOL(kmem_cache_alloc_node); #endif
static void __kmem_cache_free(void *b, int size) { if (size < PAGE_SIZE) slob_free(b, size); else slob_free_pages(b, get_order(size)); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin3697.30%150.00%
Américo Wang12.70%150.00%
Total37100.00%2100.00%


static void kmem_rcu_free(struct rcu_head *head) { struct slob_rcu *slob_rcu = (struct slob_rcu *)head; void *b = (void *)slob_rcu - (slob_rcu->size - sizeof(struct slob_rcu)); __kmem_cache_free(b, slob_rcu->size); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin54100.00%1100.00%
Total54100.00%1100.00%


void kmem_cache_free(struct kmem_cache *c, void *b) { kmemleak_free_recursive(b, c->flags); if (unlikely(c->flags & SLAB_TYPESAFE_BY_RCU)) { struct slob_rcu *slob_rcu; slob_rcu = b + (c->size - sizeof(struct slob_rcu)); slob_rcu->size = c->size; call_rcu(&slob_rcu->head, kmem_rcu_free); } else { __kmem_cache_free(b, c->size); } trace_kmem_cache_free(_RET_IP_, b); }

Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin4345.74%116.67%
Matt Mackall3436.17%116.67%
Catalin Marinas99.57%116.67%
Eduard - Gabriel Munteanu77.45%233.33%
Paul E. McKenney11.06%116.67%
Total94100.00%6100.00%

EXPORT_SYMBOL(kmem_cache_free);
void kmem_cache_free_bulk(struct kmem_cache *s, size_t size, void **p) { __kmem_cache_free_bulk(s, size, p); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter27100.00%1100.00%
Total27100.00%1100.00%

EXPORT_SYMBOL(kmem_cache_free_bulk);
int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size, void **p) { return __kmem_cache_alloc_bulk(s, flags, size, p); }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter3296.97%150.00%
Jesper Dangaard Brouer13.03%150.00%
Total33100.00%2100.00%

EXPORT_SYMBOL(kmem_cache_alloc_bulk);
int __kmem_cache_shutdown(struct kmem_cache *c) { /* No way to check for remaining objects */ return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter14100.00%1100.00%
Total14100.00%1100.00%


void __kmem_cache_release(struct kmem_cache *c) { }

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Dmitry Safonov9100.00%1100.00%
Total9100.00%1100.00%


int __kmem_cache_shrink(struct kmem_cache *d) { return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter1292.31%150.00%
Vladimir Davydov17.69%150.00%
Total13100.00%2100.00%

struct kmem_cache kmem_cache_boot = { .name = "kmem_cache", .size = sizeof(struct kmem_cache), .flags = SLAB_PANIC, .align = ARCH_KMALLOC_MINALIGN, };
void __init kmem_cache_init(void) { kmem_cache = &kmem_cache_boot; slab_state = UP; }

Contributors

PersonTokensPropCommitsCommitProp
Christoph Lameter741.18%240.00%
Matt Mackall529.41%120.00%
Paul Mundt423.53%120.00%
Dimitri Gorokhovik15.88%120.00%
Total17100.00%5100.00%


void __init kmem_cache_init_late(void) { slab_state = FULL; }

Contributors

PersonTokensPropCommitsCommitProp
Fengguang Wu866.67%150.00%
Christoph Lameter433.33%150.00%
Total12100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Nicholas Piggin113541.51%811.11%
Matt Mackall70425.75%68.33%
Christoph Lameter31811.63%1419.44%
Ezequiel García1284.68%56.94%
Paul Mundt1083.95%22.78%
Eduard - Gabriel Munteanu1073.91%22.78%
Catalin Marinas441.61%11.39%
Bob Liu351.28%11.39%
Américo Wang311.13%11.39%
Steven Rostedt140.51%22.78%
David Rientjes130.48%22.78%
Peter Zijlstra120.44%11.39%
Satyam Sharma90.33%11.39%
Arnd Bergmann90.33%11.39%
Dmitry Safonov90.33%11.39%
Fengguang Wu80.29%11.39%
Pekka J Enberg80.29%22.78%
Kirill A. Shutemov50.18%11.39%
Dave Hansen50.18%11.39%
MinChan Kim40.15%11.39%
Andy Whitcroft30.11%11.39%
Paul E. McKenney30.11%11.39%
Linus Torvalds30.11%11.39%
Glauber de Oliveira Costa30.11%11.39%
Li Zefan20.07%11.39%
Vlastimil Babka20.07%11.39%
Akinobu Mita10.04%11.39%
Dimitri Gorokhovik10.04%11.39%
Mel Gorman10.04%11.39%
Greg Kroah-Hartman10.04%11.39%
Vladimir Davydov10.04%11.39%
Jesper Dangaard Brouer10.04%11.39%
Fabian Frederick10.04%11.39%
Paul Gortmaker10.04%11.39%
Sasha Levin10.04%11.39%
Ingo Molnar10.04%11.39%
Arun Sharma10.04%11.39%
Alexey Dobriyan10.04%11.39%
Total2734100.00%72100.00%
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