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Fix --enable-debug-kmem-tracking option

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This code has gotten something stale and no longer builds cleanly
against modern kernels.  The two issues addressed here are as
follows:

* The hlist_*_rcu interfaces in the kernel have been relatively
  unstable.  Since this isn't performance critical code just use
  the long standing hlist_* variants.

* In older kernels the hash_ptr() function takes a 'void *' but
  in newer kernels it expects a 'const void *'.  To silence the
  compiler warnings about this explicitly cast it to a 'void *'.
  The memset function is a similar case but it always expects
  a 'void *'.

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #256
This commit is contained in:
Brian Behlendorf 2013-07-03 10:14:35 -07:00
parent 5bc941f3cd
commit b1424adda5
1 changed files with 9 additions and 9 deletions
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18
module/spl/spl-kmem.c
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@ -403,9 +403,9 @@ kmem_del_init(spinlock_t *lock, struct hlist_head *table, int bits, const void *
spin_lock_irqsave(lock, flags);
head = &table[hash_ptr(addr, bits)];
hlist_for_each_rcu(node, head) {
p = list_entry_rcu(node, struct kmem_debug, kd_hlist);
head = &table[hash_ptr((void *)addr, bits)];
hlist_for_each(node, head) {
p = list_entry(node, struct kmem_debug, kd_hlist);
if (p->kd_addr == addr) {
hlist_del_init(&p->kd_hlist);
list_del_init(&p->kd_list);
@ -497,7 +497,7 @@ kmem_alloc_track(size_t size, int flags, const char *func, int line,
dptr->kd_line = line;
spin_lock_irqsave(&kmem_lock, irq_flags);
hlist_add_head_rcu(&dptr->kd_hlist,
hlist_add_head(&dptr->kd_hlist,
&kmem_table[hash_ptr(ptr, KMEM_HASH_BITS)]);
list_add_tail(&dptr->kd_list, &kmem_list);
spin_unlock_irqrestore(&kmem_lock, irq_flags);
@ -538,10 +538,10 @@ kmem_free_track(const void *ptr, size_t size)
kfree(dptr->kd_func);
memset(dptr, 0x5a, sizeof(kmem_debug_t));
memset((void *)dptr, 0x5a, sizeof(kmem_debug_t));
kfree(dptr);
memset(ptr, 0x5a, size);
memset((void *)ptr, 0x5a, size);
kfree(ptr);
SEXIT;
@ -612,7 +612,7 @@ vmem_alloc_track(size_t size, int flags, const char *func, int line)
dptr->kd_line = line;
spin_lock_irqsave(&vmem_lock, irq_flags);
hlist_add_head_rcu(&dptr->kd_hlist,
hlist_add_head(&dptr->kd_hlist,
&vmem_table[hash_ptr(ptr, VMEM_HASH_BITS)]);
list_add_tail(&dptr->kd_list, &vmem_list);
spin_unlock_irqrestore(&vmem_lock, irq_flags);
@ -653,10 +653,10 @@ vmem_free_track(const void *ptr, size_t size)
kfree(dptr->kd_func);
memset(dptr, 0x5a, sizeof(kmem_debug_t));
memset((void *)dptr, 0x5a, sizeof(kmem_debug_t));
kfree(dptr);
memset(ptr, 0x5a, size);
memset((void *)ptr, 0x5a, size);
vfree(ptr);
SEXIT;