+ static const char * const ignored_symbols[] = {
+ /*
+ * Symbols which vary between passes. Passes 1 and 2 must have
+ * identical symbol lists. The kallsyms_* symbols below are
+ * only added after pass 1, they would be included in pass 2
+ * when --all-symbols is specified so exclude them to get a
+ * stable symbol list.
+ */
+ "kallsyms_addresses",
+ "kallsyms_offsets",
+ "kallsyms_relative_base",
+ "kallsyms_num_syms",
+ "kallsyms_names",
+ "kallsyms_markers",
+ "kallsyms_token_table",
+ "kallsyms_token_index",
+ /* Exclude linker generated symbols which vary between passes */
+ "_SDA_BASE_", /* ppc */
+ "_SDA2_BASE_", /* ppc */
+ NULL
+ };
+
+ static const char * const ignored_prefixes[] = {
+ "$", /* local symbols for ARM, MIPS, etc. */
+ ".LASANPC", /* s390 kasan local symbols */
+ "__crc_", /* modversions */
+ "__efistub_", /* arm64 EFI stub namespace */
+ NULL
+ };
+
+ static const char * const ignored_suffixes[] = {
+ "_from_arm", /* arm */
+ "_from_thumb", /* arm */
+ "_veneer", /* arm */
+ NULL
+ };
+
+ const char * const *p;
+
+ /* Exclude symbols which vary between passes. */
+ for (p = ignored_symbols; *p; p++)
+ if (!strcmp(name, *p))
+ return true;
+
+ for (p = ignored_prefixes; *p; p++)
+ if (!strncmp(name, *p, strlen(*p)))
+ return true;
+
+ for (p = ignored_suffixes; *p; p++) {
+ int l = strlen(name) - strlen(*p);
+
+ if (l >= 0 && !strcmp(name + l, *p))
+ return true;
+ }
+
+ if (type == 'U' || type == 'u')
+ return true;
+ /* exclude debugging symbols */
+ if (type == 'N' || type == 'n')
+ return true;
+
+ if (toupper(type) == 'A') {
+ /* Keep these useful absolute symbols */
+ if (strcmp(name, "__kernel_syscall_via_break") &&
+ strcmp(name, "__kernel_syscall_via_epc") &&
+ strcmp(name, "__kernel_sigtramp") &&
+ strcmp(name, "__gp"))
+ return true;
+ }
+
+ return false;