/*-
* BSD LICENSE
- *
- * Copyright(c) 2010-2013 Intel Corporation. All rights reserved.
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
* All rights reserved.
- *
+ *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
- *
+ *
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
- *
+ *
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
get_num_hugepages(const char *subdir)
{
char path[PATH_MAX];
- long unsigned num_pages = 0;
+ long unsigned resv_pages, num_pages = 0;
const char *nr_hp_file;
+ const char *nr_rsvd_file = "resv_hugepages";
+
+ /* first, check how many reserved pages kernel reports */
+ rte_snprintf(path, sizeof(path), "%s/%s/%s",
+ sys_dir_path, subdir, nr_rsvd_file);
+
+ if (eal_parse_sysfs_value(path, &resv_pages) < 0)
+ return 0;
/* if secondary process, just look at the number of hugepages,
* otherwise look at number of free hugepages */
else
nr_hp_file = "free_hugepages";
+ memset(path, 0, sizeof(path));
+
rte_snprintf(path, sizeof(path), "%s/%s/%s",
sys_dir_path, subdir, nr_hp_file);
RTE_LOG(WARNING, EAL, "No free hugepages reported in %s\n",
subdir);
+ /* adjust num_pages in case of primary process */
+ if (num_pages > 0 && internal_config.process_type == RTE_PROC_PRIMARY)
+ num_pages -= resv_pages;
+
return (int32_t)num_pages;
}