perf/util/symbol.c

8 #include <linux/kernel.h>
133 	/* Avoid "SyS" kernel syscall aliases */
244 		 * On some architecture kernel text segment start is located at
247 		 * kernel text segment and beginning of first module's text
249 		 * not assign it to the kernel dso map (kallsyms).
271 			/* Last kernel/module symbol mapped to end of page */
345 		       struct symbol *sym, bool kernel)
353 	if (kernel) {
541 	__symbols__insert(&dso->symbols, sym, dso->kernel);
702  * These are symbols in the kernel image, so make sure that
703  * sym is from a kernel DSO.
837  * kernel range is broken in several maps, named [kernel].N, as we don't have
876 				    dso->kernel == DSO_SPACE__KERNEL_GUEST &&
915 			 * is the start of kernel text, by simply removing the
935 			if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
937 					"[guest.kernel].%d",
941 					"[kernel].%d",
949 			ndso->kernel = dso->kernel;
986 	    dso->kernel == DSO_SPACE__KERNEL_GUEST &&
1302 	/* This function requires that the map is the kernel map */
1310 	/* Modules and kernel must be present at their original addresses */
1340 	/* Find the kernel map using the '_stext' symbol */
1353 			 * On some architectures, ARM64 for example, the kernel
1421 	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
1430 		pr_debug("Using %s for kernel object code\n", kcore_filename);
1432 		pr_debug("Using %s for kernel data\n", kcore_filename);
1450  * If the kernel is relocated at boot time, kallsyms won't match.  Compute the
1488 	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
1704 		return !kmod && dso->kernel == DSO_SPACE__USER;
1709 		return dso->kernel == DSO_SPACE__KERNEL;
1714 		return dso->kernel == DSO_SPACE__KERNEL_GUEST;
1721 		 * kernel modules know their symtab type - it's set when
1816 	if (dso->kernel && !kmod) {
1817 		if (dso->kernel == DSO_SPACE__KERNEL)
1819 		else if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
1985 	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
1998 	if (dso->kernel == DSO_SPACE__KERNEL_GUEST)
2097 		 * any vmlinux file, try the running kernel kallsyms table.
2102 	if (sysfs__read_build_id("/sys/kernel/notes", &bid) == 0)
2312 	/* only try kernel version if no symfs was given */
2414 	FILE *fp = fopen("/proc/sys/kernel/kptr_restrict", "r");
2427 	/* Per kernel/kallsyms.c:
2595  * Checks that user supplied symbol kernel files are accessible because