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, 380 insertions, 0 deletions

diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
new file mode 100644
index 000000000..6b5ffe81f
--- /dev/null
+++ b/tools/perf/util/debug.c
@@ -0,0 +1,380 @@
+// SPDX-License-Identifier: GPL-2.0
+/* For general debugging purposes */
+
+#include <inttypes.h>
+#include <string.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/wait.h>
+#include <api/debug.h>
+#include <linux/kernel.h>
+#include <linux/time64.h>
+#include <sys/time.h>
+#ifdef HAVE_BACKTRACE_SUPPORT
+#include <execinfo.h>
+#endif
+#include "addr_location.h"
+#include "color.h"
+#include "debug.h"
+#include "env.h"
+#include "event.h"
+#include "machine.h"
+#include "map.h"
+#include "print_binary.h"
+#include "srcline.h"
+#include "symbol.h"
+#include "synthetic-events.h"
+#include "target.h"
+#include "thread.h"
+#include "trace-event.h"
+#include "ui/helpline.h"
+#include "ui/ui.h"
+#include "util/parse-sublevel-options.h"
+
+#include <linux/ctype.h>
+
+#ifdef HAVE_LIBTRACEEVENT
+#include <event-parse.h>
+#else
+#define LIBTRACEEVENT_VERSION 0
+#endif
+
+int verbose;
+int debug_kmaps;
+int debug_peo_args;
+bool dump_trace = false, quiet = false;
+int debug_ordered_events;
+static int redirect_to_stderr;
+int debug_data_convert;
+static FILE *_debug_file;
+static bool debug_display_time;
+int debug_type_profile;
+
+FILE *debug_file(void)
+{
+	if (!_debug_file) {
+		debug_set_file(stderr);
+		pr_warning_once("debug_file not set");
+	}
+	return _debug_file;
+}
+
+void debug_set_file(FILE *file)
+{
+	_debug_file = file;
+}
+
+void debug_set_display_time(bool set)
+{
+	debug_display_time = set;
+}
+
+static int fprintf_time(FILE *file)
+{
+	struct timeval tod;
+	struct tm ltime;
+	char date[64];
+
+	if (!debug_display_time)
+		return 0;
+
+	if (gettimeofday(&tod, NULL) != 0)
+		return 0;
+
+	if (localtime_r(&tod.tv_sec, &ltime) == NULL)
+		return 0;
+
+	strftime(date, sizeof(date),  "%F %H:%M:%S", &ltime);
+	return fprintf(file, "[%s.%06lu] ", date, (long)tod.tv_usec);
+}
+
+int veprintf(int level, int var, const char *fmt, va_list args)
+{
+	int ret = 0;
+
+	if (var >= level) {
+		if (use_browser >= 1 && !redirect_to_stderr) {
+			ui_helpline__vshow(fmt, args);
+		} else {
+			ret = fprintf_time(debug_file());
+			ret += vfprintf(debug_file(), fmt, args);
+		}
+	}
+
+	return ret;
+}
+
+int eprintf(int level, int var, const char *fmt, ...)
+{
+	va_list args;
+	int ret;
+
+	va_start(args, fmt);
+	ret = veprintf(level, var, fmt, args);
+	va_end(args);
+
+	return ret;
+}
+
+static int veprintf_time(u64 t, const char *fmt, va_list args)
+{
+	int ret = 0;
+	u64 secs, usecs, nsecs = t;
+
+	secs   = nsecs / NSEC_PER_SEC;
+	nsecs -= secs  * NSEC_PER_SEC;
+	usecs  = nsecs / NSEC_PER_USEC;
+
+	ret = fprintf(debug_file(), "[%13" PRIu64 ".%06" PRIu64 "] ", secs, usecs);
+	ret += vfprintf(debug_file(), fmt, args);
+	return ret;
+}
+
+int eprintf_time(int level, int var, u64 t, const char *fmt, ...)
+{
+	int ret = 0;
+	va_list args;
+
+	if (var >= level) {
+		va_start(args, fmt);
+		ret = veprintf_time(t, fmt, args);
+		va_end(args);
+	}
+
+	return ret;
+}
+
+/*
+ * Overloading libtraceevent standard info print
+ * function, display with -v in perf.
+ */
+void pr_stat(const char *fmt, ...)
+{
+	va_list args;
+
+	va_start(args, fmt);
+	veprintf(1, verbose, fmt, args);
+	va_end(args);
+	eprintf(1, verbose, "\n");
+}
+
+int dump_printf(const char *fmt, ...)
+{
+	va_list args;
+	int ret = 0;
+
+	if (dump_trace) {
+		va_start(args, fmt);
+		ret = vprintf(fmt, args);
+		va_end(args);
+	}
+
+	return ret;
+}
+
+static int trace_event_printer(enum binary_printer_ops op,
+			       unsigned int val, void *extra, FILE *fp)
+{
+	const char *color = PERF_COLOR_BLUE;
+	union perf_event *event = (union perf_event *)extra;
+	unsigned char ch = (unsigned char)val;
+	int printed = 0;
+
+	switch (op) {
+	case BINARY_PRINT_DATA_BEGIN:
+		printed += fprintf(fp, ".");
+		printed += color_fprintf(fp, color, "\n. ... raw event: size %d bytes\n",
+					 event->header.size);
+		break;
+	case BINARY_PRINT_LINE_BEGIN:
+		printed += fprintf(fp, ".");
+		break;
+	case BINARY_PRINT_ADDR:
+		printed += color_fprintf(fp, color, "  %04x: ", val);
+		break;
+	case BINARY_PRINT_NUM_DATA:
+		printed += color_fprintf(fp, color, " %02x", val);
+		break;
+	case BINARY_PRINT_NUM_PAD:
+		printed += color_fprintf(fp, color, "   ");
+		break;
+	case BINARY_PRINT_SEP:
+		printed += color_fprintf(fp, color, "  ");
+		break;
+	case BINARY_PRINT_CHAR_DATA:
+		printed += color_fprintf(fp, color, "%c",
+			      isprint(ch) && isascii(ch) ? ch : '.');
+		break;
+	case BINARY_PRINT_CHAR_PAD:
+		printed += color_fprintf(fp, color, " ");
+		break;
+	case BINARY_PRINT_LINE_END:
+		printed += color_fprintf(fp, color, "\n");
+		break;
+	case BINARY_PRINT_DATA_END:
+		printed += fprintf(fp, "\n");
+		break;
+	default:
+		break;
+	}
+
+	return printed;
+}
+
+void trace_event(union perf_event *event)
+{
+	unsigned char *raw_event = (void *)event;
+
+	if (!dump_trace)
+		return;
+
+	print_binary(raw_event, event->header.size, 16,
+		     trace_event_printer, event);
+}
+
+static struct sublevel_option debug_opts[] = {
+	{ .name = "verbose",		.value_ptr = &verbose },
+	{ .name = "ordered-events",	.value_ptr = &debug_ordered_events},
+	{ .name = "stderr",		.value_ptr = &redirect_to_stderr},
+	{ .name = "data-convert",	.value_ptr = &debug_data_convert },
+	{ .name = "perf-event-open",	.value_ptr = &debug_peo_args },
+	{ .name = "kmaps",		.value_ptr = &debug_kmaps },
+	{ .name = "type-profile",	.value_ptr = &debug_type_profile },
+	{ .name = NULL, }
+};
+
+int perf_debug_option(const char *str)
+{
+	int ret;
+
+	ret = perf_parse_sublevel_options(str, debug_opts);
+	if (ret)
+		return ret;
+
+	/* Allow only verbose value in range (0, 10), otherwise set 0. */
+	verbose = (verbose < 0) || (verbose > 10) ? 0 : verbose;
+
+#if LIBTRACEEVENT_VERSION >= MAKE_LIBTRACEEVENT_VERSION(1, 3, 0)
+	if (verbose == 1)
+		tep_set_loglevel(TEP_LOG_INFO);
+	else if (verbose == 2)
+		tep_set_loglevel(TEP_LOG_DEBUG);
+	else if (verbose >= 3)
+		tep_set_loglevel(TEP_LOG_ALL);
+#endif
+	return 0;
+}
+
+int perf_quiet_option(void)
+{
+	struct sublevel_option *opt = &debug_opts[0];
+
+	/* disable all debug messages */
+	while (opt->name) {
+		*opt->value_ptr = -1;
+		opt++;
+	}
+
+	/* For debug variables that are used as bool types, set to 0. */
+	redirect_to_stderr = 0;
+	debug_peo_args = 0;
+	debug_kmaps = 0;
+	debug_type_profile = 0;
+
+	return 0;
+}
+
+#define DEBUG_WRAPPER(__n, __l)				\
+static int pr_ ## __n ## _wrapper(const char *fmt, ...)	\
+{							\
+	va_list args;					\
+	int ret;					\
+							\
+	va_start(args, fmt);				\
+	ret = veprintf(__l, verbose, fmt, args);	\
+	va_end(args);					\
+	return ret;					\
+}
+
+DEBUG_WRAPPER(warning, 0);
+DEBUG_WRAPPER(debug, 1);
+
+void perf_debug_setup(void)
+{
+	debug_set_file(stderr);
+	libapi_set_print(pr_warning_wrapper, pr_warning_wrapper, pr_debug_wrapper);
+}
+
+void __dump_stack(FILE *file, void **stackdump, size_t stackdump_size)
+{
+	/* TODO: async safety. printf, malloc, etc. aren't safe inside a signal handler. */
+	pid_t pid = getpid();
+	struct machine *machine;
+	struct thread *thread = NULL;
+	struct perf_env host_env;
+
+	perf_env__init(&host_env);
+	machine = machine__new_live(&host_env, /*kernel_maps=*/false, pid);
+
+	if (machine)
+		thread = machine__find_thread(machine, pid, pid);
+
+#ifdef HAVE_BACKTRACE_SUPPORT
+	if (!machine || !thread) {
+		/*
+		 * Backtrace functions are async signal safe. Fall back on them
+		 * if machine/thread creation fails.
+		 */
+		backtrace_symbols_fd(stackdump, stackdump_size, fileno(file));
+		machine__delete(machine);
+		perf_env__exit(&host_env);
+		return;
+	}
+#endif
+
+	for (size_t i = 0; i < stackdump_size; i++) {
+		struct addr_location al;
+		u64 addr = (u64)(uintptr_t)stackdump[i];
+		bool printed = false;
+
+		addr_location__init(&al);
+		if (thread && thread__find_map(thread, PERF_RECORD_MISC_USER, addr, &al)) {
+			al.sym = map__find_symbol(al.map, al.addr);
+			if (al.sym) {
+				fprintf(file, "    #%zd %p in %s ", i, stackdump[i], al.sym->name);
+				printed = true;
+			}
+		}
+		if (!printed)
+			fprintf(file, "    #%zd %p ", i, stackdump[i]);
+
+		map__fprintf_srcline(al.map, al.addr, "", file);
+		fprintf(file, "\n");
+		addr_location__exit(&al);
+	}
+	thread__put(thread);
+	machine__delete(machine);
+	perf_env__exit(&host_env);
+}
+
+/* Obtain a backtrace and print it to stdout. */
+#ifdef HAVE_BACKTRACE_SUPPORT
+void dump_stack(void)
+{
+	void *stackdump[32];
+	size_t size = backtrace(stackdump, ARRAY_SIZE(stackdump));
+
+	__dump_stack(stdout, stackdump, size);
+}
+#else
+void dump_stack(void) {}
+#endif
+
+void sighandler_dump_stack(int sig)
+{
+	psignal(sig, "perf");
+	dump_stack();
+	signal(sig, SIG_DFL);
+	raise(sig);
+}