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mem: exclude unused memory from core dump
[dpdk.git]
/
lib
/
librte_eal
/
common
/
eal_common_memory.c
diff --git
a/lib/librte_eal/common/eal_common_memory.c
b/lib/librte_eal/common/eal_common_memory.c
index
cc7d54e
..
9a797a4
100644
(file)
--- a/
lib/librte_eal/common/eal_common_memory.c
+++ b/
lib/librte_eal/common/eal_common_memory.c
@@
-40,6
+40,14
@@
static void *next_baseaddr;
static uint64_t system_page_sz;
static void *next_baseaddr;
static uint64_t system_page_sz;
+#ifdef RTE_EXEC_ENV_LINUX
+#define RTE_DONTDUMP MADV_DONTDUMP
+#elif RTE_EXEC_ENV_FREEBSD
+#define RTE_DONTDUMP MADV_NOCORE
+#else
+#error "madvise doesn't support this OS"
+#endif
+
#define MAX_MMAP_WITH_DEFINED_ADDR_TRIES 5
void *
eal_get_virtual_area(void *requested_addr, size_t *size,
#define MAX_MMAP_WITH_DEFINED_ADDR_TRIES 5
void *
eal_get_virtual_area(void *requested_addr, size_t *size,
@@
-179,6
+187,13
@@
eal_get_virtual_area(void *requested_addr, size_t *size,
munmap(aligned_end, after_len);
}
munmap(aligned_end, after_len);
}
+ if (!unmap) {
+ /* Exclude these pages from a core dump. */
+ if (madvise(aligned_addr, *size, RTE_DONTDUMP) != 0)
+ RTE_LOG(DEBUG, EAL, "madvise failed: %s\n",
+ strerror(errno));
+ }
+
return aligned_addr;
}
return aligned_addr;
}