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Remove KMC_KMEM and KMC_VMEM

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`KMC_KMEM` and `KMC_VMEM` are now unused since all SPL-implemented
caches are `KMC_KVMEM`.

KMC_KMEM: Given the default value of `spl_kmem_cache_kmem_limit`, we
don't use kmalloc to back the SPL caches, instead we use kvmalloc
(KMC_KVMEM).  The flag, module parameter, /proc entries, and associated
code are removed.

KMC_VMEM: This flag is not used, and kvmalloc() is always preferable to
vmalloc().  The flag, /proc entries, and associated code are removed.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #10673
This commit is contained in:
Matthew Ahrens
2020-08-17 16:04:28 -07:00
committed by GitHub
parent 3df0c2fa32
commit 994de7e4b7
5 changed files with 10 additions and 151 deletions
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module/os/linux/spl/spl-proc.c
-54
View File
@@ -631,60 +631,6 @@ static struct ctl_table spl_kmem_table[] = {
.proc_handler = &proc_doulongvec_minmax,
},
#endif /* DEBUG_KMEM */
{
.procname = "slab_kmem_total",
.data = (void *)(KMC_KMEM | KMC_TOTAL),
.maxlen = sizeof (unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doslab,
},
{
.procname = "slab_kmem_alloc",
.data = (void *)(KMC_KMEM | KMC_ALLOC),
.maxlen = sizeof (unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doslab,
},
{
.procname = "slab_kmem_max",
.data = (void *)(KMC_KMEM | KMC_MAX),
.maxlen = sizeof (unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doslab,
},
{
.procname = "slab_vmem_total",
.data = (void *)(KMC_VMEM | KMC_TOTAL),
.maxlen = sizeof (unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doslab,
},
{
.procname = "slab_vmem_alloc",
.data = (void *)(KMC_VMEM | KMC_ALLOC),
.maxlen = sizeof (unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doslab,
},
{
.procname = "slab_vmem_max",
.data = (void *)(KMC_VMEM | KMC_MAX),
.maxlen = sizeof (unsigned long),
.extra1 = &table_min,
.extra2 = &table_max,
.mode = 0444,
.proc_handler = &proc_doslab,
},
{
.procname = "slab_kvmem_total",
.data = (void *)(KMC_KVMEM | KMC_TOTAL),