#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
+#include <unistd.h>
#include <linux/mempolicy.h>
#include <linux/memfd.h>
+#include <sched.h>
#include <vppinfra/format.h>
#include <vppinfra/linux/syscall.h>
if (*numa_node == CLIB_PMALLOC_NUMA_LOCAL)
{
u32 cpu;
- if (getcpu (&cpu, numa_node, 0) != 0)
+ if (getcpu (&cpu, numa_node) != 0)
return 1;
}
return 0;
}
int
-clib_pmalloc_init (clib_pmalloc_main_t * pm, uword size)
+clib_pmalloc_init (clib_pmalloc_main_t * pm, uword base_addr, uword size)
{
uword off, pagesize;
+ u64 *pt = 0;
+ int mmap_flags;
ASSERT (pm->error == 0);
pm->sys_log2_page_sz = min_log2 (sysconf (_SC_PAGESIZE));
pm->lookup_log2_page_sz = pm->def_log2_page_sz;
+ /* check if pagemap is accessible */
+ pt = clib_mem_vm_get_paddr (&pt, pm->sys_log2_page_sz, 1);
+ if (pt == 0 || pt[0] == 0)
+ pm->flags |= CLIB_PMALLOC_F_NO_PAGEMAP;
+
size = size ? size : ((u64) DEFAULT_RESERVED_MB) << 20;
size = round_pow2 (size, pagesize);
pm->max_pages = size >> pm->def_log2_page_sz;
/* reserve VA space for future growth */
- pm->base = mmap (0, size + pagesize, PROT_NONE,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS;
+
+ if (base_addr)
+ mmap_flags |= MAP_FIXED;
+
+ pm->base = mmap (uword_to_pointer (base_addr, void *), size + pagesize,
+ PROT_NONE, mmap_flags, -1, 0);
if (pm->base == MAP_FAILED)
{
pm->base += off;
}
- munmap (pm->base + (pm->max_pages * pagesize), pagesize - off);
+ munmap (pm->base + ((uword) pm->max_pages * pagesize), pagesize - off);
return 0;
}
pp->n_free_chunks = a->subpages_per_page;
}
+ if (pp->n_free_blocks < n_blocks)
+ return 0;
+
alloc_chunk_index = pp->first_chunk_index;
next_chunk:
vec_validate_aligned (pm->lookup_table, vec_len (pm->pages) *
elts_per_page - 1, CLIB_CACHE_LINE_BYTES);
- fd = open ((char *) "/proc/self/pagemap", O_RDONLY);
+ p = (uword) first *elts_per_page;
+ if (pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP)
+ {
+ while (p < (uword) elts_per_page * count)
+ {
+ pm->lookup_table[p] = pointer_to_uword (pm->base) +
+ (p << pm->lookup_log2_page_sz);
+ p++;
+ }
+ return;
+ }
- p = first * elts_per_page;
- while (p < elts_per_page * count)
+ fd = open ((char *) "/proc/self/pagemap", O_RDONLY);
+ while (p < (uword) elts_per_page * count)
{
va = pointer_to_uword (pm->base) + (p << pm->lookup_log2_page_sz);
+ pa = 0;
seek = (va >> pm->sys_log2_page_sz) * sizeof (pa);
if (fd != -1 && lseek (fd, seek, SEEK_SET) == seek &&
read (fd, &pa, sizeof (pa)) == (sizeof (pa)) &&
{
clib_pmalloc_page_t *pp = 0;
int status, rv, i, mmap_flags;
- void *va;
+ void *va = MAP_FAILED;
int old_mpol = -1;
long unsigned int mask[16] = { 0 };
long unsigned int old_mask[16] = { 0 };
return 0;
}
- mmap_flags = MAP_FIXED | MAP_ANONYMOUS | MAP_LOCKED;
-
- if (a->log2_subpage_sz != pm->sys_log2_page_sz)
- mmap_flags |= MAP_HUGETLB;
+ mmap_flags = MAP_FIXED;
if (a->flags & CLIB_PMALLOC_ARENA_F_SHARED_MEM)
{
mmap_flags |= MAP_SHARED;
- if (mmap_flags & MAP_HUGETLB)
+ if (a->log2_subpage_sz != pm->sys_log2_page_sz)
pm->error = clib_mem_create_hugetlb_fd ((char *) a->name, &a->fd);
else
pm->error = clib_mem_create_fd ((char *) a->name, &a->fd);
if (a->fd == -1)
goto error;
+ if ((ftruncate (a->fd, size)) == -1)
+ goto error;
}
else
{
- mmap_flags |= MAP_PRIVATE;
+ if (a->log2_subpage_sz != pm->sys_log2_page_sz)
+ mmap_flags |= MAP_HUGETLB;
+
+ mmap_flags |= MAP_PRIVATE | MAP_ANONYMOUS;
a->fd = -1;
}
goto error;
}
+ if (a->log2_subpage_sz != pm->sys_log2_page_sz && mlock (va, size) != 0)
+ {
+ pm->error = clib_error_return_unix (0, "Unable to lock pages");
+ goto error;
+ }
+
clib_memset (va, 0, size);
rv = set_mempolicy (old_mpol, old_mask, sizeof (old_mask) * 8 + 1);
clib_error_return (0, "page allocated on wrong node, numa node "
"%u status %d", numa_node, status);
- /* unmap & reesrve */
- munmap (va, size);
- mmap (va, size, PROT_NONE, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS,
- -1, 0);
goto error;
}
return pp - (n_pages - 1);
error:
+ if (va != MAP_FAILED)
+ {
+ /* unmap & reserve */
+ munmap (va, size);
+ mmap (va, size, PROT_NONE, MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS,
+ -1, 0);
+ }
if (a->fd != -1)
close (a->fd);
return 0;
return 0;
}
- return pm->base + (pp->index << pm->def_log2_page_sz);
+ return pm->base + ((uword) pp->index << pm->def_log2_page_sz);
}
static inline void *
int verbose = va_arg (*va, int);
u32 indent = format_get_indent (s);
- s = format (s, "page %u: phys-addr %p ", pp->index, pp->pa);
-
if (pp->chunks == 0)
return s;
clib_pmalloc_arena_t *a;
s = format (s, "used-pages %u reserved-pages %u default-page-size %U "
- "lookup-page-size %U", vec_len (pm->pages), pm->max_pages,
+ "lookup-page-size %U%s", vec_len (pm->pages), pm->max_pages,
format_log2_page_size, pm->def_log2_page_sz,
- format_log2_page_size, pm->lookup_log2_page_sz);
+ format_log2_page_size, pm->lookup_log2_page_sz,
+ pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP ? " no-pagemap" : "");
if (verbose >= 2)
return s;
}
+u8 *
+format_pmalloc_map (u8 * s, va_list * va)
+{
+ clib_pmalloc_main_t *pm = va_arg (*va, clib_pmalloc_main_t *);
+
+ u32 index;
+ s = format (s, "%16s %13s %8s", "virtual-addr", "physical-addr", "size");
+ vec_foreach_index (index, pm->lookup_table)
+ {
+ uword *lookup_val, pa, va;
+ lookup_val = vec_elt_at_index (pm->lookup_table, index);
+ va =
+ pointer_to_uword (pm->base) +
+ ((uword) index << pm->lookup_log2_page_sz);
+ pa = va - *lookup_val;
+ s =
+ format (s, "\n %16p %13p %8U", uword_to_pointer (va, u64),
+ uword_to_pointer (pa, u64), format_log2_page_size,
+ pm->lookup_log2_page_sz);
+ }
+ return s;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*
Code Review / vpp.git / blobdiff