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, 359 insertions, 0 deletions

diff --git a/tools/perf/util/stat-shadow.c b/tools/perf/util/stat-shadow.c
new file mode 100644
index 000000000..525a3fe4a
--- /dev/null
+++ b/tools/perf/util/stat-shadow.c
@@ -0,0 +1,359 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <errno.h>
+#include <math.h>
+#include <stdio.h>
+
+#include <linux/zalloc.h>
+
+#include "cgroup.h"
+#include "color.h"
+#include "debug.h"
+#include "evlist.h"
+#include "evsel.h"
+#include "expr.h"
+#include "hashmap.h"
+#include "iostat.h"
+#include "metricgroup.h"
+#include "pmu.h"
+#include "pmus.h"
+#include "rblist.h"
+#include "stat.h"
+#include "tool_pmu.h"
+#include "units.h"
+
+static bool tool_pmu__is_time_event(const struct perf_stat_config *config,
+				   const struct evsel *evsel, int *tool_aggr_idx)
+{
+	enum tool_pmu_event event = evsel__tool_event(evsel);
+	int aggr_idx;
+
+	if (event != TOOL_PMU__EVENT_DURATION_TIME &&
+	    event != TOOL_PMU__EVENT_USER_TIME &&
+	    event != TOOL_PMU__EVENT_SYSTEM_TIME)
+		return false;
+
+	if (config) {
+		cpu_aggr_map__for_each_idx(aggr_idx, config->aggr_map) {
+			if (config->aggr_map->map[aggr_idx].cpu.cpu == 0) {
+				*tool_aggr_idx = aggr_idx;
+				return true;
+			}
+		}
+		pr_debug("Unexpected CPU0 missing in aggregation for tool event.\n");
+	}
+	*tool_aggr_idx = 0; /* Assume the first aggregation index works. */
+	return true;
+}
+
+static int prepare_metric(struct perf_stat_config *config,
+			  const struct metric_expr *mexp,
+			  const struct evsel *evsel,
+			  struct expr_parse_ctx *pctx,
+			  int aggr_idx)
+{
+	struct evsel * const *metric_events = mexp->metric_events;
+	struct metric_ref *metric_refs = mexp->metric_refs;
+	int i;
+
+	for (i = 0; metric_events[i]; i++) {
+		int source_count = 0, tool_aggr_idx;
+		int aggr_nr = 1;
+		bool is_tool_time =
+			tool_pmu__is_time_event(config, metric_events[i], &tool_aggr_idx);
+		struct perf_stat_evsel *ps = metric_events[i]->stats;
+		char *n;
+		double val;
+
+		/*
+		 * If there are multiple uncore PMUs and we're not reading the
+		 * leader's stats, determine the stats for the appropriate
+		 * uncore PMU.
+		 */
+		if (evsel && evsel->metric_leader &&
+		    evsel->pmu != evsel->metric_leader->pmu &&
+		    mexp->metric_events[i]->pmu == evsel->metric_leader->pmu) {
+			struct evsel *pos;
+
+			evlist__for_each_entry(evsel->evlist, pos) {
+				if (pos->pmu != evsel->pmu)
+					continue;
+				if (pos->metric_leader != mexp->metric_events[i])
+					continue;
+				ps = pos->stats;
+				source_count = 1;
+				break;
+			}
+		}
+		/* Time events are always on CPU0, the first aggregation index. */
+		if (!ps || !metric_events[i]->supported) {
+			/*
+			 * Not supported events will have a count of 0, which
+			 * can be confusing in a metric. Explicitly set the
+			 * value to NAN. Not counted events (enable time of 0)
+			 * are read as 0.
+			 */
+			val = NAN;
+			source_count = 0;
+			aggr_nr = 0;
+		} else {
+			struct perf_stat_aggr *aggr =
+				&ps->aggr[is_tool_time ? tool_aggr_idx : aggr_idx];
+
+			if (aggr->counts.run == 0) {
+				val = NAN;
+				source_count = 0;
+				aggr_nr = 0;
+			} else {
+				val = aggr->counts.val;
+				if (is_tool_time) {
+					/* Convert time event nanoseconds to seconds. */
+					val *= 1e-9;
+				}
+				if (!source_count)
+					source_count = evsel__source_count(metric_events[i]);
+				aggr_nr = aggr->nr ?: 1;
+			}
+		}
+		n = strdup(evsel__metric_id(metric_events[i]));
+		if (!n)
+			return -ENOMEM;
+
+		expr__add_id_val_source_count_aggr_nr(pctx, n, val, source_count, aggr_nr);
+	}
+
+	for (int j = 0; metric_refs && metric_refs[j].metric_name; j++) {
+		int ret = expr__add_ref(pctx, &metric_refs[j]);
+
+		if (ret)
+			return ret;
+	}
+
+	return i;
+}
+
+static void generic_metric(struct perf_stat_config *config,
+			   struct metric_expr *mexp,
+			   struct evsel *evsel,
+			   int aggr_idx,
+			   struct perf_stat_output_ctx *out)
+{
+	print_metric_t print_metric = out->print_metric;
+	const char *metric_name = mexp->metric_name;
+	const char *metric_expr = mexp->metric_expr;
+	const char *metric_threshold = mexp->metric_threshold;
+	const char *metric_unit = mexp->metric_unit;
+	struct evsel * const *metric_events = mexp->metric_events;
+	int runtime = mexp->runtime;
+	struct expr_parse_ctx *pctx;
+	double ratio, scale, threshold;
+	int i;
+	void *ctxp = out->ctx;
+	enum metric_threshold_classify thresh = METRIC_THRESHOLD_UNKNOWN;
+
+	pctx = expr__ctx_new();
+	if (!pctx)
+		return;
+
+	if (config->user_requested_cpu_list)
+		pctx->sctx.user_requested_cpu_list = strdup(config->user_requested_cpu_list);
+	pctx->sctx.runtime = runtime;
+	pctx->sctx.system_wide = config->system_wide;
+	i = prepare_metric(config, mexp, evsel, pctx, aggr_idx);
+	if (i < 0) {
+		expr__ctx_free(pctx);
+		return;
+	}
+	if (!metric_events[i]) {
+		if (expr__parse(&ratio, pctx, metric_expr) == 0) {
+			char *unit;
+			char metric_bf[128];
+
+			if (metric_threshold &&
+			    expr__parse(&threshold, pctx, metric_threshold) == 0 &&
+			    !isnan(threshold)) {
+				thresh = fpclassify(threshold) == FP_ZERO
+					? METRIC_THRESHOLD_GOOD : METRIC_THRESHOLD_BAD;
+			}
+
+			if (metric_unit && metric_name) {
+				if (perf_pmu__convert_scale(metric_unit,
+					&unit, &scale) >= 0) {
+					ratio *= scale;
+				}
+				if (strstr(metric_expr, "?"))
+					scnprintf(metric_bf, sizeof(metric_bf),
+					  "%s  %s_%d", unit, metric_name, runtime);
+				else
+					scnprintf(metric_bf, sizeof(metric_bf),
+					  "%s  %s", unit, metric_name);
+
+				print_metric(config, ctxp, thresh, "%8.1f",
+					     metric_bf, ratio);
+			} else {
+				print_metric(config, ctxp, thresh, "%8.2f",
+					metric_name ?
+					metric_name :
+					out->force_header ?  evsel->name : "",
+					ratio);
+			}
+		} else {
+			print_metric(config, ctxp, thresh, /*fmt=*/NULL,
+				     out->force_header ?
+				     (metric_name ?: evsel->name) : "", 0);
+		}
+	} else {
+		print_metric(config, ctxp, thresh, /*fmt=*/NULL,
+			     out->force_header ?
+			     (metric_name ?: evsel->name) : "", 0);
+	}
+
+	expr__ctx_free(pctx);
+}
+
+double test_generic_metric(struct metric_expr *mexp, int aggr_idx)
+{
+	struct expr_parse_ctx *pctx;
+	double ratio = 0.0;
+
+	pctx = expr__ctx_new();
+	if (!pctx)
+		return NAN;
+
+	if (prepare_metric(/*config=*/NULL, mexp, /*evsel=*/NULL, pctx, aggr_idx) < 0)
+		goto out;
+
+	if (expr__parse(&ratio, pctx, mexp->metric_expr))
+		ratio = 0.0;
+
+out:
+	expr__ctx_free(pctx);
+	return ratio;
+}
+
+static void perf_stat__print_metricgroup_header(struct perf_stat_config *config,
+						struct evsel *evsel,
+						void *ctxp,
+						const char *name,
+						struct perf_stat_output_ctx *out)
+{
+	bool need_full_name = perf_pmus__num_core_pmus() > 1;
+	static const char *last_name;
+	static const struct perf_pmu *last_pmu;
+	char full_name[64];
+
+	/*
+	 * A metricgroup may have several metric events,
+	 * e.g.,TopdownL1 on e-core of ADL.
+	 * The name has been output by the first metric
+	 * event. Only align with other metics from
+	 * different metric events.
+	 */
+	if (last_name && !strcmp(last_name, name) && last_pmu == evsel->pmu) {
+		out->print_metricgroup_header(config, ctxp, NULL);
+		return;
+	}
+
+	if (need_full_name && evsel->pmu)
+		scnprintf(full_name, sizeof(full_name), "%s (%s)", name, evsel->pmu->name);
+	else
+		scnprintf(full_name, sizeof(full_name), "%s", name);
+
+	out->print_metricgroup_header(config, ctxp, full_name);
+
+	last_name = name;
+	last_pmu = evsel->pmu;
+}
+
+/**
+ * perf_stat__print_shadow_stats_metricgroup - Print out metrics associated with the evsel
+ *					       For the non-default, all metrics associated
+ *					       with the evsel are printed.
+ *					       For the default mode, only the metrics from
+ *					       the same metricgroup and the name of the
+ *					       metricgroup are printed. To print the metrics
+ *					       from the next metricgroup (if available),
+ *					       invoke the function with correspoinding
+ *					       metric_expr.
+ */
+void *perf_stat__print_shadow_stats_metricgroup(struct perf_stat_config *config,
+						struct evsel *evsel,
+						int aggr_idx,
+						int *num,
+						void *from,
+						struct perf_stat_output_ctx *out)
+{
+	struct metric_event *me;
+	struct metric_expr *mexp = from;
+	void *ctxp = out->ctx;
+	bool header_printed = false;
+	const char *name = NULL;
+	struct rblist *metric_events = evlist__metric_events(evsel->evlist);
+
+	me = metricgroup__lookup(metric_events, evsel, false);
+	if (me == NULL)
+		return NULL;
+
+	if (!mexp)
+		mexp = list_first_entry(&me->head, typeof(*mexp), nd);
+
+	list_for_each_entry_from(mexp, &me->head, nd) {
+		/* Print the display name of the Default metricgroup */
+		if (!config->metric_only && me->is_default) {
+			if (!name)
+				name = mexp->default_metricgroup_name;
+			/*
+			 * Two or more metricgroup may share the same metric
+			 * event, e.g., TopdownL1 and TopdownL2 on SPR.
+			 * Return and print the prefix, e.g., noise, running
+			 * for the next metricgroup.
+			 */
+			if (strcmp(name, mexp->default_metricgroup_name))
+				return (void *)mexp;
+			/* Only print the name of the metricgroup once */
+			if (!header_printed && !evsel->default_show_events) {
+				header_printed = true;
+				perf_stat__print_metricgroup_header(config, evsel, ctxp,
+								    name, out);
+			}
+		}
+
+		if ((*num)++ > 0 && out->new_line)
+			out->new_line(config, ctxp);
+		generic_metric(config, mexp, evsel, aggr_idx, out);
+	}
+
+	return NULL;
+}
+
+void perf_stat__print_shadow_stats(struct perf_stat_config *config,
+				   struct evsel *evsel,
+				   int aggr_idx,
+				   struct perf_stat_output_ctx *out)
+{
+	print_metric_t print_metric = out->print_metric;
+	void *ctxp = out->ctx;
+	int num = 0;
+
+	if (config->iostat_run)
+		iostat_print_metric(config, evsel, out);
+
+	perf_stat__print_shadow_stats_metricgroup(config, evsel, aggr_idx,
+						  &num, NULL, out);
+
+	if (num == 0) {
+		print_metric(config, ctxp, METRIC_THRESHOLD_UNKNOWN,
+			     /*fmt=*/NULL, /*unit=*/NULL, 0);
+	}
+}
+
+/**
+ * perf_stat__skip_metric_event - Skip the evsel in the Default metricgroup,
+ *				  if it's not running or not the metric event.
+ */
+bool perf_stat__skip_metric_event(struct evsel *evsel)
+{
+	if (!evsel->default_metricgroup)
+		return false;
+
+	return !metricgroup__lookup(evlist__metric_events(evsel->evlist), evsel, false);
+}