Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 558 insertions, 0 deletions

diff --git a/tools/perf/builtin-buildid-cache.c b/tools/perf/builtin-buildid-cache.c
new file mode 100644
index 000000000..539e779e3
--- /dev/null
+++ b/tools/perf/builtin-buildid-cache.c
@@ -0,0 +1,558 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * builtin-buildid-cache.c
+ *
+ * Builtin buildid-cache command: Manages build-id cache
+ *
+ * Copyright (C) 2010, Red Hat Inc.
+ * Copyright (C) 2010, Arnaldo Carvalho de Melo <acme@redhat.com>
+ */
+#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>
+#include <dirent.h>
+#include <errno.h>
+#include <unistd.h>
+#include "builtin.h"
+#include "namespaces.h"
+#include "util/debug.h"
+#include "util/header.h"
+#include <subcmd/pager.h>
+#include <subcmd/parse-options.h>
+#include "util/strlist.h"
+#include "util/build-id.h"
+#include "util/session.h"
+#include "util/dso.h"
+#include "util/symbol.h"
+#include "util/time-utils.h"
+#include "util/util.h"
+#include "util/probe-file.h"
+#include "util/config.h"
+#include <linux/string.h>
+#include <linux/err.h>
+
+static int build_id_cache__kcore_buildid(const char *proc_dir, char *sbuildid, size_t sbuildid_size)
+{
+	char root_dir[PATH_MAX];
+	char *p;
+
+	strlcpy(root_dir, proc_dir, sizeof(root_dir));
+
+	p = strrchr(root_dir, '/');
+	if (!p)
+		return -1;
+	*p = '\0';
+	return sysfs__snprintf_build_id(root_dir, sbuildid, sbuildid_size);
+}
+
+static int build_id_cache__kcore_dir(char *dir, size_t sz)
+{
+	return fetch_current_timestamp(dir, sz);
+}
+
+static bool same_kallsyms_reloc(const char *from_dir, char *to_dir)
+{
+	char from[PATH_MAX];
+	char to[PATH_MAX];
+	const char *name;
+	u64 addr1 = 0, addr2 = 0;
+	int i, err = -1;
+
+	scnprintf(from, sizeof(from), "%s/kallsyms", from_dir);
+	scnprintf(to, sizeof(to), "%s/kallsyms", to_dir);
+
+	for (i = 0; (name = ref_reloc_sym_names[i]) != NULL; i++) {
+		err = kallsyms__get_function_start(from, name, &addr1);
+		if (!err)
+			break;
+	}
+
+	if (err)
+		return false;
+
+	if (kallsyms__get_function_start(to, name, &addr2))
+		return false;
+
+	return addr1 == addr2;
+}
+
+static int build_id_cache__kcore_existing(const char *from_dir, char *to_dir,
+					  size_t to_dir_sz)
+{
+	char from[PATH_MAX];
+	char to[PATH_MAX];
+	char to_subdir[PATH_MAX];
+	struct dirent *dent;
+	int ret = -1;
+	DIR *d;
+
+	d = opendir(to_dir);
+	if (!d)
+		return -1;
+
+	scnprintf(from, sizeof(from), "%s/modules", from_dir);
+
+	while (1) {
+		dent = readdir(d);
+		if (!dent)
+			break;
+		if (dent->d_type != DT_DIR)
+			continue;
+		scnprintf(to, sizeof(to), "%s/%s/modules", to_dir,
+			  dent->d_name);
+		scnprintf(to_subdir, sizeof(to_subdir), "%s/%s",
+			  to_dir, dent->d_name);
+		if (!compare_proc_modules(from, to) &&
+		    same_kallsyms_reloc(from_dir, to_subdir)) {
+			strlcpy(to_dir, to_subdir, to_dir_sz);
+			ret = 0;
+			break;
+		}
+	}
+
+	closedir(d);
+
+	return ret;
+}
+
+static int build_id_cache__add_kcore(const char *filename, bool force)
+{
+	char dir[32], sbuildid[SBUILD_ID_SIZE];
+	char from_dir[PATH_MAX], to_dir[PATH_MAX];
+	char *p;
+
+	strlcpy(from_dir, filename, sizeof(from_dir));
+
+	p = strrchr(from_dir, '/');
+	if (!p || strcmp(p + 1, "kcore"))
+		return -1;
+	*p = '\0';
+
+	if (build_id_cache__kcore_buildid(from_dir, sbuildid, sizeof(sbuildid)) < 0)
+		return -1;
+
+	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s",
+		  buildid_dir, DSO__NAME_KCORE, sbuildid);
+
+	if (!force &&
+	    !build_id_cache__kcore_existing(from_dir, to_dir, sizeof(to_dir))) {
+		pr_debug("same kcore found in %s\n", to_dir);
+		return 0;
+	}
+
+	if (build_id_cache__kcore_dir(dir, sizeof(dir)))
+		return -1;
+
+	scnprintf(to_dir, sizeof(to_dir), "%s/%s/%s/%s",
+		  buildid_dir, DSO__NAME_KCORE, sbuildid, dir);
+
+	if (mkdir_p(to_dir, 0755))
+		return -1;
+
+	if (kcore_copy(from_dir, to_dir)) {
+		/* Remove YYYYmmddHHMMSShh directory */
+		if (!rmdir(to_dir)) {
+			p = strrchr(to_dir, '/');
+			if (p)
+				*p = '\0';
+			/* Try to remove buildid directory */
+			if (!rmdir(to_dir)) {
+				p = strrchr(to_dir, '/');
+				if (p)
+					*p = '\0';
+				/* Try to remove [kernel.kcore] directory */
+				rmdir(to_dir);
+			}
+		}
+		return -1;
+	}
+
+	pr_debug("kcore added to build-id cache directory %s\n", to_dir);
+
+	return 0;
+}
+
+static int build_id_cache__add_file(const char *filename, struct nsinfo *nsi)
+{
+	char sbuild_id[SBUILD_ID_SIZE];
+	struct build_id bid = { .size = 0, };
+	int err;
+	struct nscookie nsc;
+
+	nsinfo__mountns_enter(nsi, &nsc);
+	err = filename__read_build_id(filename, &bid);
+	nsinfo__mountns_exit(&nsc);
+	if (err < 0) {
+		pr_debug("Couldn't read a build-id in %s\n", filename);
+		return -1;
+	}
+
+	build_id__snprintf(&bid, sbuild_id, sizeof(sbuild_id));
+	err = build_id_cache__add_s(sbuild_id, filename, nsi,
+				    false, false);
+	pr_debug("Adding %s %s: %s\n", sbuild_id, filename,
+		 err ? "FAIL" : "Ok");
+	return err;
+}
+
+static int build_id_cache__remove_file(const char *filename, struct nsinfo *nsi)
+{
+	char sbuild_id[SBUILD_ID_SIZE];
+	struct build_id bid = { .size = 0, };
+	struct nscookie nsc;
+
+	int err;
+
+	nsinfo__mountns_enter(nsi, &nsc);
+	err = filename__read_build_id(filename, &bid);
+	nsinfo__mountns_exit(&nsc);
+	if (err < 0) {
+		pr_debug("Couldn't read a build-id in %s\n", filename);
+		return -1;
+	}
+
+	build_id__snprintf(&bid, sbuild_id, sizeof(sbuild_id));
+	err = build_id_cache__remove_s(sbuild_id);
+	pr_debug("Removing %s %s: %s\n", sbuild_id, filename,
+		 err ? "FAIL" : "Ok");
+
+	return err;
+}
+
+static int build_id_cache__purge_path(const char *pathname, struct nsinfo *nsi)
+{
+	struct strlist *list;
+	struct str_node *pos;
+	int err;
+
+	err = build_id_cache__list_build_ids(pathname, nsi, &list);
+	if (err)
+		goto out;
+
+	strlist__for_each_entry(pos, list) {
+		err = build_id_cache__remove_s(pos->s);
+		pr_debug("Removing %s %s: %s\n", pos->s, pathname,
+			 err ? "FAIL" : "Ok");
+		if (err)
+			break;
+	}
+	strlist__delete(list);
+
+out:
+	pr_debug("Purging %s: %s\n", pathname, err ? "FAIL" : "Ok");
+
+	return err;
+}
+
+static int build_id_cache__purge_all(void)
+{
+	struct strlist *list;
+	struct str_node *pos;
+	int err = 0;
+	char *buf;
+
+	list = build_id_cache__list_all(false);
+	if (!list) {
+		pr_debug("Failed to get buildids: -%d\n", errno);
+		return -EINVAL;
+	}
+
+	strlist__for_each_entry(pos, list) {
+		buf = build_id_cache__origname(pos->s);
+		err = build_id_cache__remove_s(pos->s);
+		pr_debug("Removing %s (%s): %s\n", buf, pos->s,
+			 err ? "FAIL" : "Ok");
+		free(buf);
+		if (err)
+			break;
+	}
+	strlist__delete(list);
+
+	pr_debug("Purged all: %s\n", err ? "FAIL" : "Ok");
+	return err;
+}
+
+static bool dso__missing_buildid_cache(struct dso *dso, int parm __maybe_unused)
+{
+	char filename[PATH_MAX];
+	struct build_id bid = { .size = 0, };
+	int err;
+
+	if (!dso__build_id_filename(dso, filename, sizeof(filename), false))
+		return true;
+
+	err = filename__read_build_id(filename, &bid);
+	if (err < 0) {
+		if (err == -ENOENT)
+			return false;
+
+		pr_warning("Problems with %s file, consider removing it from the cache\n",
+			   filename);
+	} else if (memcmp(dso__bid(dso)->data, bid.data, bid.size)) {
+		pr_warning("Problems with %s file, consider removing it from the cache\n",
+			   filename);
+	}
+
+	return true;
+}
+
+static int build_id_cache__fprintf_missing(struct perf_session *session, FILE *fp)
+{
+	perf_session__fprintf_dsos_buildid(session, fp, dso__missing_buildid_cache, 0);
+	return 0;
+}
+
+static int build_id_cache__update_file(const char *filename, struct nsinfo *nsi)
+{
+	char sbuild_id[SBUILD_ID_SIZE];
+	struct build_id bid = { .size = 0, };
+	struct nscookie nsc;
+
+	int err;
+
+	nsinfo__mountns_enter(nsi, &nsc);
+	err = filename__read_build_id(filename, &bid);
+	nsinfo__mountns_exit(&nsc);
+	if (err < 0) {
+		pr_debug("Couldn't read a build-id in %s\n", filename);
+		return -1;
+	}
+	err = 0;
+
+	build_id__snprintf(&bid, sbuild_id, sizeof(sbuild_id));
+	if (build_id_cache__cached(sbuild_id))
+		err = build_id_cache__remove_s(sbuild_id);
+
+	if (!err)
+		err = build_id_cache__add_s(sbuild_id, filename, nsi, false,
+					    false);
+
+	pr_debug("Updating %s %s: %s\n", sbuild_id, filename,
+		 err ? "FAIL" : "Ok");
+
+	return err;
+}
+
+static int build_id_cache__show_all(void)
+{
+	struct strlist *bidlist;
+	struct str_node *nd;
+	char *buf;
+
+	bidlist = build_id_cache__list_all(true);
+	if (!bidlist) {
+		pr_debug("Failed to get buildids: -%d\n", errno);
+		return -1;
+	}
+	strlist__for_each_entry(nd, bidlist) {
+		buf = build_id_cache__origname(nd->s);
+		fprintf(stdout, "%s %s\n", nd->s, buf);
+		free(buf);
+	}
+	strlist__delete(bidlist);
+	return 0;
+}
+
+static int perf_buildid_cache_config(const char *var, const char *value, void *cb)
+{
+	struct perf_debuginfod *di = cb;
+
+	if (!strcmp(var, "buildid-cache.debuginfod")) {
+		di->urls = strdup(value);
+		if (!di->urls)
+			return -ENOMEM;
+		di->set = true;
+	}
+
+	return 0;
+}
+
+int cmd_buildid_cache(int argc, const char **argv)
+{
+	struct strlist *list;
+	struct str_node *pos;
+	int ret, ns_id = -1;
+	bool force = false;
+	bool list_files = false;
+	bool opts_flag = false;
+	bool purge_all = false;
+	char const *add_name_list_str = NULL,
+		   *remove_name_list_str = NULL,
+		   *purge_name_list_str = NULL,
+		   *missing_filename = NULL,
+		   *update_name_list_str = NULL,
+		   *kcore_filename = NULL;
+	struct perf_debuginfod debuginfod = { };
+	char sbuf[STRERR_BUFSIZE];
+
+	struct perf_data data = {
+		.mode  = PERF_DATA_MODE_READ,
+	};
+	struct perf_session *session = NULL;
+	struct nsinfo *nsi = NULL;
+
+	const struct option buildid_cache_options[] = {
+	OPT_STRING('a', "add", &add_name_list_str,
+		   "file list", "file(s) to add"),
+	OPT_STRING('k', "kcore", &kcore_filename,
+		   "file", "kcore file to add"),
+	OPT_STRING('r', "remove", &remove_name_list_str, "file list",
+		    "file(s) to remove"),
+	OPT_STRING('p', "purge", &purge_name_list_str, "file list",
+		    "file(s) to remove (remove old caches too)"),
+	OPT_BOOLEAN('P', "purge-all", &purge_all, "purge all cached files"),
+	OPT_BOOLEAN('l', "list", &list_files, "list all cached files"),
+	OPT_STRING('M', "missing", &missing_filename, "file",
+		   "to find missing build ids in the cache"),
+	OPT_BOOLEAN('f', "force", &force, "don't complain, do it"),
+	OPT_STRING('u', "update", &update_name_list_str, "file list",
+		    "file(s) to update"),
+	OPT_STRING_OPTARG_SET(0, "debuginfod", &debuginfod.urls,
+			&debuginfod.set, "debuginfod urls",
+			"Enable debuginfod data retrieval from DEBUGINFOD_URLS or specified urls",
+			"system"),
+	OPT_INCR('v', "verbose", &verbose, "be more verbose"),
+	OPT_INTEGER(0, "target-ns", &ns_id, "target pid for namespace context"),
+	OPT_END()
+	};
+	const char * const buildid_cache_usage[] = {
+		"perf buildid-cache [<options>]",
+		NULL
+	};
+
+	ret = perf_config(perf_buildid_cache_config, &debuginfod);
+	if (ret)
+		return ret;
+
+	argc = parse_options(argc, argv, buildid_cache_options,
+			     buildid_cache_usage, 0);
+
+	opts_flag = add_name_list_str || kcore_filename ||
+		remove_name_list_str || purge_name_list_str ||
+		missing_filename || update_name_list_str ||
+		purge_all;
+
+	if (argc || !(list_files || opts_flag))
+		usage_with_options(buildid_cache_usage, buildid_cache_options);
+
+	perf_debuginfod_setup(&debuginfod);
+
+	/* -l is exclusive. It can not be used with other options. */
+	if (list_files && opts_flag) {
+		usage_with_options_msg(buildid_cache_usage,
+			buildid_cache_options, "-l is exclusive.\n");
+	}
+
+	if (ns_id > 0)
+		nsi = nsinfo__new(ns_id);
+
+	if (missing_filename) {
+		data.path  = missing_filename;
+		data.force = force;
+
+		session = perf_session__new(&data, NULL);
+		if (IS_ERR(session))
+			return PTR_ERR(session);
+	}
+
+	if (symbol__init(session ? perf_session__env(session) : NULL) < 0)
+		goto out;
+
+	setup_pager();
+
+	if (list_files) {
+		ret = build_id_cache__show_all();
+		goto out;
+	}
+
+	if (add_name_list_str) {
+		list = strlist__new(add_name_list_str, NULL);
+		if (list) {
+			strlist__for_each_entry(pos, list)
+				if (build_id_cache__add_file(pos->s, nsi)) {
+					if (errno == EEXIST) {
+						pr_debug("%s already in the cache\n",
+							 pos->s);
+						continue;
+					}
+					pr_warning("Couldn't add %s: %s\n",
+						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
+				}
+
+			strlist__delete(list);
+		}
+	}
+
+	if (remove_name_list_str) {
+		list = strlist__new(remove_name_list_str, NULL);
+		if (list) {
+			strlist__for_each_entry(pos, list)
+				if (build_id_cache__remove_file(pos->s, nsi)) {
+					if (errno == ENOENT) {
+						pr_debug("%s wasn't in the cache\n",
+							 pos->s);
+						continue;
+					}
+					pr_warning("Couldn't remove %s: %s\n",
+						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
+				}
+
+			strlist__delete(list);
+		}
+	}
+
+	if (purge_name_list_str) {
+		list = strlist__new(purge_name_list_str, NULL);
+		if (list) {
+			strlist__for_each_entry(pos, list)
+				if (build_id_cache__purge_path(pos->s, nsi)) {
+					if (errno == ENOENT) {
+						pr_debug("%s wasn't in the cache\n",
+							 pos->s);
+						continue;
+					}
+					pr_warning("Couldn't remove %s: %s\n",
+						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
+				}
+
+			strlist__delete(list);
+		}
+	}
+
+	if (purge_all) {
+		if (build_id_cache__purge_all()) {
+			pr_warning("Couldn't remove some caches. Error: %s.\n",
+				str_error_r(errno, sbuf, sizeof(sbuf)));
+		}
+	}
+
+	if (missing_filename)
+		ret = build_id_cache__fprintf_missing(session, stdout);
+
+	if (update_name_list_str) {
+		list = strlist__new(update_name_list_str, NULL);
+		if (list) {
+			strlist__for_each_entry(pos, list)
+				if (build_id_cache__update_file(pos->s, nsi)) {
+					if (errno == ENOENT) {
+						pr_debug("%s wasn't in the cache\n",
+							 pos->s);
+						continue;
+					}
+					pr_warning("Couldn't update %s: %s\n",
+						   pos->s, str_error_r(errno, sbuf, sizeof(sbuf)));
+				}
+
+			strlist__delete(list);
+		}
+	}
+
+	if (kcore_filename && build_id_cache__add_kcore(kcore_filename, force))
+		pr_warning("Couldn't add %s\n", kcore_filename);
+
+out:
+	perf_session__delete(session);
+	nsinfo__zput(nsi);
+
+	return ret;
+}