Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #include <stdbool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #include <stdlib.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <stdint.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include "util/debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <subcmd/parse-options.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include "util/perf_regs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "util/parse-regs-options.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) __parse_regs(const struct option *opt, const char *str, int unset, bool intr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	uint64_t *mode = (uint64_t *)opt->value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	const struct sample_reg *r = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	char *s, *os = NULL, *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 	int ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 	uint64_t mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	if (unset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	 * cannot set it twice
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	if (*mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 		return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	if (intr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		mask = arch__intr_reg_mask();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		mask = arch__user_reg_mask();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	/* str may be NULL in case no arg is passed to -I */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	if (str) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 		/* because str is read-only */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 		s = os = strdup(str);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		if (!s)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 			return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		for (;;) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 			p = strchr(s, ',');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 			if (p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 				*p = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 			if (!strcmp(s, "?")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 				fprintf(stderr, "available registers: ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #ifdef HAVE_PERF_REGS_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 				for (r = sample_reg_masks; r->name; r++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 					if (r->mask & mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 						fprintf(stderr, "%s ", r->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 				}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 				fputc('\n', stderr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 				/* just printing available regs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 				goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #ifdef HAVE_PERF_REGS_SUPPORT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 			for (r = sample_reg_masks; r->name; r++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 				if ((r->mask & mask) && !strcasecmp(s, r->name))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 					break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 			if (!r || !r->name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 				ui__warning("Unknown register \"%s\", check man page or run \"perf record %s?\"\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) 					    s, intr ? "-I" : "--user-regs=");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 				goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 			}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 			*mode |= r->mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) 			if (!p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 			s = p + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 	ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	/* default to all possible regs */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 	if (*mode == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) 		*mode = mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) 	free(os);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) parse_user_regs(const struct option *opt, const char *str, int unset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) 	return __parse_regs(opt, str, unset, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) parse_intr_regs(const struct option *opt, const char *str, int unset)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) 	return __parse_regs(opt, str, unset, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }