1 files changed, 0 insertions, 641 deletions

diff --git a/tools/perf/lib/evlist.c b/tools/perf/lib/evlist.c
deleted file mode 100644
index ae9e65aa2491..000000000000
--- a/tools/perf/lib/evlist.c
+++ /dev/null
@@ -1,641 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <perf/evlist.h>
-#include <perf/evsel.h>
-#include <linux/bitops.h>
-#include <linux/list.h>
-#include <linux/hash.h>
-#include <sys/ioctl.h>
-#include <internal/evlist.h>
-#include <internal/evsel.h>
-#include <internal/xyarray.h>
-#include <internal/mmap.h>
-#include <internal/cpumap.h>
-#include <internal/threadmap.h>
-#include <internal/xyarray.h>
-#include <internal/lib.h>
-#include <linux/zalloc.h>
-#include <sys/ioctl.h>
-#include <stdlib.h>
-#include <errno.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <poll.h>
-#include <sys/mman.h>
-#include <perf/cpumap.h>
-#include <perf/threadmap.h>
-#include <api/fd/array.h>
-
-void perf_evlist__init(struct perf_evlist *evlist)
-{
-	int i;
-
-	for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i)
-		INIT_HLIST_HEAD(&evlist->heads[i]);
-	INIT_LIST_HEAD(&evlist->entries);
-	evlist->nr_entries = 0;
-	fdarray__init(&evlist->pollfd, 64);
-}
-
-static void __perf_evlist__propagate_maps(struct perf_evlist *evlist,
-					  struct perf_evsel *evsel)
-{
-	/*
-	 * We already have cpus for evsel (via PMU sysfs) so
-	 * keep it, if there's no target cpu list defined.
-	 */
-	if (!evsel->own_cpus || evlist->has_user_cpus) {
-		perf_cpu_map__put(evsel->cpus);
-		evsel->cpus = perf_cpu_map__get(evlist->cpus);
-	} else if (evsel->cpus != evsel->own_cpus) {
-		perf_cpu_map__put(evsel->cpus);
-		evsel->cpus = perf_cpu_map__get(evsel->own_cpus);
-	}
-
-	perf_thread_map__put(evsel->threads);
-	evsel->threads = perf_thread_map__get(evlist->threads);
-	evlist->all_cpus = perf_cpu_map__merge(evlist->all_cpus, evsel->cpus);
-}
-
-static void perf_evlist__propagate_maps(struct perf_evlist *evlist)
-{
-	struct perf_evsel *evsel;
-
-	perf_evlist__for_each_evsel(evlist, evsel)
-		__perf_evlist__propagate_maps(evlist, evsel);
-}
-
-void perf_evlist__add(struct perf_evlist *evlist,
-		      struct perf_evsel *evsel)
-{
-	list_add_tail(&evsel->node, &evlist->entries);
-	evlist->nr_entries += 1;
-	__perf_evlist__propagate_maps(evlist, evsel);
-}
-
-void perf_evlist__remove(struct perf_evlist *evlist,
-			 struct perf_evsel *evsel)
-{
-	list_del_init(&evsel->node);
-	evlist->nr_entries -= 1;
-}
-
-struct perf_evlist *perf_evlist__new(void)
-{
-	struct perf_evlist *evlist = zalloc(sizeof(*evlist));
-
-	if (evlist != NULL)
-		perf_evlist__init(evlist);
-
-	return evlist;
-}
-
-struct perf_evsel *
-perf_evlist__next(struct perf_evlist *evlist, struct perf_evsel *prev)
-{
-	struct perf_evsel *next;
-
-	if (!prev) {
-		next = list_first_entry(&evlist->entries,
-					struct perf_evsel,
-					node);
-	} else {
-		next = list_next_entry(prev, node);
-	}
-
-	/* Empty list is noticed here so don't need checking on entry. */
-	if (&next->node == &evlist->entries)
-		return NULL;
-
-	return next;
-}
-
-static void perf_evlist__purge(struct perf_evlist *evlist)
-{
-	struct perf_evsel *pos, *n;
-
-	perf_evlist__for_each_entry_safe(evlist, n, pos) {
-		list_del_init(&pos->node);
-		perf_evsel__delete(pos);
-	}
-
-	evlist->nr_entries = 0;
-}
-
-void perf_evlist__exit(struct perf_evlist *evlist)
-{
-	perf_cpu_map__put(evlist->cpus);
-	perf_thread_map__put(evlist->threads);
-	evlist->cpus = NULL;
-	evlist->threads = NULL;
-	fdarray__exit(&evlist->pollfd);
-}
-
-void perf_evlist__delete(struct perf_evlist *evlist)
-{
-	if (evlist == NULL)
-		return;
-
-	perf_evlist__munmap(evlist);
-	perf_evlist__close(evlist);
-	perf_evlist__purge(evlist);
-	perf_evlist__exit(evlist);
-	free(evlist);
-}
-
-void perf_evlist__set_maps(struct perf_evlist *evlist,
-			   struct perf_cpu_map *cpus,
-			   struct perf_thread_map *threads)
-{
-	/*
-	 * Allow for the possibility that one or another of the maps isn't being
-	 * changed i.e. don't put it.  Note we are assuming the maps that are
-	 * being applied are brand new and evlist is taking ownership of the
-	 * original reference count of 1.  If that is not the case it is up to
-	 * the caller to increase the reference count.
-	 */
-	if (cpus != evlist->cpus) {
-		perf_cpu_map__put(evlist->cpus);
-		evlist->cpus = perf_cpu_map__get(cpus);
-	}
-
-	if (threads != evlist->threads) {
-		perf_thread_map__put(evlist->threads);
-		evlist->threads = perf_thread_map__get(threads);
-	}
-
-	perf_evlist__propagate_maps(evlist);
-}
-
-int perf_evlist__open(struct perf_evlist *evlist)
-{
-	struct perf_evsel *evsel;
-	int err;
-
-	perf_evlist__for_each_entry(evlist, evsel) {
-		err = perf_evsel__open(evsel, evsel->cpus, evsel->threads);
-		if (err < 0)
-			goto out_err;
-	}
-
-	return 0;
-
-out_err:
-	perf_evlist__close(evlist);
-	return err;
-}
-
-void perf_evlist__close(struct perf_evlist *evlist)
-{
-	struct perf_evsel *evsel;
-
-	perf_evlist__for_each_entry_reverse(evlist, evsel)
-		perf_evsel__close(evsel);
-}
-
-void perf_evlist__enable(struct perf_evlist *evlist)
-{
-	struct perf_evsel *evsel;
-
-	perf_evlist__for_each_entry(evlist, evsel)
-		perf_evsel__enable(evsel);
-}
-
-void perf_evlist__disable(struct perf_evlist *evlist)
-{
-	struct perf_evsel *evsel;
-
-	perf_evlist__for_each_entry(evlist, evsel)
-		perf_evsel__disable(evsel);
-}
-
-u64 perf_evlist__read_format(struct perf_evlist *evlist)
-{
-	struct perf_evsel *first = perf_evlist__first(evlist);
-
-	return first->attr.read_format;
-}
-
-#define SID(e, x, y) xyarray__entry(e->sample_id, x, y)
-
-static void perf_evlist__id_hash(struct perf_evlist *evlist,
-				 struct perf_evsel *evsel,
-				 int cpu, int thread, u64 id)
-{
-	int hash;
-	struct perf_sample_id *sid = SID(evsel, cpu, thread);
-
-	sid->id = id;
-	sid->evsel = evsel;
-	hash = hash_64(sid->id, PERF_EVLIST__HLIST_BITS);
-	hlist_add_head(&sid->node, &evlist->heads[hash]);
-}
-
-void perf_evlist__id_add(struct perf_evlist *evlist,
-			 struct perf_evsel *evsel,
-			 int cpu, int thread, u64 id)
-{
-	perf_evlist__id_hash(evlist, evsel, cpu, thread, id);
-	evsel->id[evsel->ids++] = id;
-}
-
-int perf_evlist__id_add_fd(struct perf_evlist *evlist,
-			   struct perf_evsel *evsel,
-			   int cpu, int thread, int fd)
-{
-	u64 read_data[4] = { 0, };
-	int id_idx = 1; /* The first entry is the counter value */
-	u64 id;
-	int ret;
-
-	ret = ioctl(fd, PERF_EVENT_IOC_ID, &id);
-	if (!ret)
-		goto add;
-
-	if (errno != ENOTTY)
-		return -1;
-
-	/* Legacy way to get event id.. All hail to old kernels! */
-
-	/*
-	 * This way does not work with group format read, so bail
-	 * out in that case.
-	 */
-	if (perf_evlist__read_format(evlist) & PERF_FORMAT_GROUP)
-		return -1;
-
-	if (!(evsel->attr.read_format & PERF_FORMAT_ID) ||
-	    read(fd, &read_data, sizeof(read_data)) == -1)
-		return -1;
-
-	if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_ENABLED)
-		++id_idx;
-	if (evsel->attr.read_format & PERF_FORMAT_TOTAL_TIME_RUNNING)
-		++id_idx;
-
-	id = read_data[id_idx];
-
-add:
-	perf_evlist__id_add(evlist, evsel, cpu, thread, id);
-	return 0;
-}
-
-int perf_evlist__alloc_pollfd(struct perf_evlist *evlist)
-{
-	int nr_cpus = perf_cpu_map__nr(evlist->cpus);
-	int nr_threads = perf_thread_map__nr(evlist->threads);
-	int nfds = 0;
-	struct perf_evsel *evsel;
-
-	perf_evlist__for_each_entry(evlist, evsel) {
-		if (evsel->system_wide)
-			nfds += nr_cpus;
-		else
-			nfds += nr_cpus * nr_threads;
-	}
-
-	if (fdarray__available_entries(&evlist->pollfd) < nfds &&
-	    fdarray__grow(&evlist->pollfd, nfds) < 0)
-		return -ENOMEM;
-
-	return 0;
-}
-
-int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd,
-			    void *ptr, short revent)
-{
-	int pos = fdarray__add(&evlist->pollfd, fd, revent | POLLERR | POLLHUP);
-
-	if (pos >= 0) {
-		evlist->pollfd.priv[pos].ptr = ptr;
-		fcntl(fd, F_SETFL, O_NONBLOCK);
-	}
-
-	return pos;
-}
-
-static void perf_evlist__munmap_filtered(struct fdarray *fda, int fd,
-					 void *arg __maybe_unused)
-{
-	struct perf_mmap *map = fda->priv[fd].ptr;
-
-	if (map)
-		perf_mmap__put(map);
-}
-
-int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask)
-{
-	return fdarray__filter(&evlist->pollfd, revents_and_mask,
-			       perf_evlist__munmap_filtered, NULL);
-}
-
-int perf_evlist__poll(struct perf_evlist *evlist, int timeout)
-{
-	return fdarray__poll(&evlist->pollfd, timeout);
-}
-
-static struct perf_mmap* perf_evlist__alloc_mmap(struct perf_evlist *evlist, bool overwrite)
-{
-	int i;
-	struct perf_mmap *map;
-
-	map = zalloc(evlist->nr_mmaps * sizeof(struct perf_mmap));
-	if (!map)
-		return NULL;
-
-	for (i = 0; i < evlist->nr_mmaps; i++) {
-		struct perf_mmap *prev = i ? &map[i - 1] : NULL;
-
-		/*
-		 * When the perf_mmap() call is made we grab one refcount, plus
-		 * one extra to let perf_mmap__consume() get the last
-		 * events after all real references (perf_mmap__get()) are
-		 * dropped.
-		 *
-		 * Each PERF_EVENT_IOC_SET_OUTPUT points to this mmap and
-		 * thus does perf_mmap__get() on it.
-		 */
-		perf_mmap__init(&map[i], prev, overwrite, NULL);
-	}
-
-	return map;
-}
-
-static void perf_evlist__set_sid_idx(struct perf_evlist *evlist,
-				     struct perf_evsel *evsel, int idx, int cpu,
-				     int thread)
-{
-	struct perf_sample_id *sid = SID(evsel, cpu, thread);
-
-	sid->idx = idx;
-	if (evlist->cpus && cpu >= 0)
-		sid->cpu = evlist->cpus->map[cpu];
-	else
-		sid->cpu = -1;
-	if (!evsel->system_wide && evlist->threads && thread >= 0)
-		sid->tid = perf_thread_map__pid(evlist->threads, thread);
-	else
-		sid->tid = -1;
-}
-
-static struct perf_mmap*
-perf_evlist__mmap_cb_get(struct perf_evlist *evlist, bool overwrite, int idx)
-{
-	struct perf_mmap *maps;
-
-	maps = overwrite ? evlist->mmap_ovw : evlist->mmap;
-
-	if (!maps) {
-		maps = perf_evlist__alloc_mmap(evlist, overwrite);
-		if (!maps)
-			return NULL;
-
-		if (overwrite)
-			evlist->mmap_ovw = maps;
-		else
-			evlist->mmap = maps;
-	}
-
-	return &maps[idx];
-}
-
-#define FD(e, x, y) (*(int *) xyarray__entry(e->fd, x, y))
-
-static int
-perf_evlist__mmap_cb_mmap(struct perf_mmap *map, struct perf_mmap_param *mp,
-			  int output, int cpu)
-{
-	return perf_mmap__mmap(map, mp, output, cpu);
-}
-
-static void perf_evlist__set_mmap_first(struct perf_evlist *evlist, struct perf_mmap *map,
-					bool overwrite)
-{
-	if (overwrite)
-		evlist->mmap_ovw_first = map;
-	else
-		evlist->mmap_first = map;
-}
-
-static int
-mmap_per_evsel(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops,
-	       int idx, struct perf_mmap_param *mp, int cpu_idx,
-	       int thread, int *_output, int *_output_overwrite)
-{
-	int evlist_cpu = perf_cpu_map__cpu(evlist->cpus, cpu_idx);
-	struct perf_evsel *evsel;
-	int revent;
-
-	perf_evlist__for_each_entry(evlist, evsel) {
-		bool overwrite = evsel->attr.write_backward;
-		struct perf_mmap *map;
-		int *output, fd, cpu;
-
-		if (evsel->system_wide && thread)
-			continue;
-
-		cpu = perf_cpu_map__idx(evsel->cpus, evlist_cpu);
-		if (cpu == -1)
-			continue;
-
-		map = ops->get(evlist, overwrite, idx);
-		if (map == NULL)
-			return -ENOMEM;
-
-		if (overwrite) {
-			mp->prot = PROT_READ;
-			output   = _output_overwrite;
-		} else {
-			mp->prot = PROT_READ | PROT_WRITE;
-			output   = _output;
-		}
-
-		fd = FD(evsel, cpu, thread);
-
-		if (*output == -1) {
-			*output = fd;
-
-			/*
-			 * The last one will be done at perf_mmap__consume(), so that we
-			 * make sure we don't prevent tools from consuming every last event in
-			 * the ring buffer.
-			 *
-			 * I.e. we can get the POLLHUP meaning that the fd doesn't exist
-			 * anymore, but the last events for it are still in the ring buffer,
-			 * waiting to be consumed.
-			 *
-			 * Tools can chose to ignore this at their own discretion, but the
-			 * evlist layer can't just drop it when filtering events in
-			 * perf_evlist__filter_pollfd().
-			 */
-			refcount_set(&map->refcnt, 2);
-
-			if (ops->mmap(map, mp, *output, evlist_cpu) < 0)
-				return -1;
-
-			if (!idx)
-				perf_evlist__set_mmap_first(evlist, map, overwrite);
-		} else {
-			if (ioctl(fd, PERF_EVENT_IOC_SET_OUTPUT, *output) != 0)
-				return -1;
-
-			perf_mmap__get(map);
-		}
-
-		revent = !overwrite ? POLLIN : 0;
-
-		if (!evsel->system_wide &&
-		    perf_evlist__add_pollfd(evlist, fd, map, revent) < 0) {
-			perf_mmap__put(map);
-			return -1;
-		}
-
-		if (evsel->attr.read_format & PERF_FORMAT_ID) {
-			if (perf_evlist__id_add_fd(evlist, evsel, cpu, thread,
-						   fd) < 0)
-				return -1;
-			perf_evlist__set_sid_idx(evlist, evsel, idx, cpu,
-						 thread);
-		}
-	}
-
-	return 0;
-}
-
-static int
-mmap_per_thread(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops,
-		struct perf_mmap_param *mp)
-{
-	int thread;
-	int nr_threads = perf_thread_map__nr(evlist->threads);
-
-	for (thread = 0; thread < nr_threads; thread++) {
-		int output = -1;
-		int output_overwrite = -1;
-
-		if (ops->idx)
-			ops->idx(evlist, mp, thread, false);
-
-		if (mmap_per_evsel(evlist, ops, thread, mp, 0, thread,
-				   &output, &output_overwrite))
-			goto out_unmap;
-	}
-
-	return 0;
-
-out_unmap:
-	perf_evlist__munmap(evlist);
-	return -1;
-}
-
-static int
-mmap_per_cpu(struct perf_evlist *evlist, struct perf_evlist_mmap_ops *ops,
-	     struct perf_mmap_param *mp)
-{
-	int nr_threads = perf_thread_map__nr(evlist->threads);
-	int nr_cpus    = perf_cpu_map__nr(evlist->cpus);
-	int cpu, thread;
-
-	for (cpu = 0; cpu < nr_cpus; cpu++) {
-		int output = -1;
-		int output_overwrite = -1;
-
-		if (ops->idx)
-			ops->idx(evlist, mp, cpu, true);
-
-		for (thread = 0; thread < nr_threads; thread++) {
-			if (mmap_per_evsel(evlist, ops, cpu, mp, cpu,
-					   thread, &output, &output_overwrite))
-				goto out_unmap;
-		}
-	}
-
-	return 0;
-
-out_unmap:
-	perf_evlist__munmap(evlist);
-	return -1;
-}
-
-static int perf_evlist__nr_mmaps(struct perf_evlist *evlist)
-{
-	int nr_mmaps;
-
-	nr_mmaps = perf_cpu_map__nr(evlist->cpus);
-	if (perf_cpu_map__empty(evlist->cpus))
-		nr_mmaps = perf_thread_map__nr(evlist->threads);
-
-	return nr_mmaps;
-}
-
-int perf_evlist__mmap_ops(struct perf_evlist *evlist,
-			  struct perf_evlist_mmap_ops *ops,
-			  struct perf_mmap_param *mp)
-{
-	struct perf_evsel *evsel;
-	const struct perf_cpu_map *cpus = evlist->cpus;
-	const struct perf_thread_map *threads = evlist->threads;
-
-	if (!ops || !ops->get || !ops->mmap)
-		return -EINVAL;
-
-	mp->mask = evlist->mmap_len - page_size - 1;
-
-	evlist->nr_mmaps = perf_evlist__nr_mmaps(evlist);
-
-	perf_evlist__for_each_entry(evlist, evsel) {
-		if ((evsel->attr.read_format & PERF_FORMAT_ID) &&
-		    evsel->sample_id == NULL &&
-		    perf_evsel__alloc_id(evsel, perf_cpu_map__nr(cpus), threads->nr) < 0)
-			return -ENOMEM;
-	}
-
-	if (evlist->pollfd.entries == NULL && perf_evlist__alloc_pollfd(evlist) < 0)
-		return -ENOMEM;
-
-	if (perf_cpu_map__empty(cpus))
-		return mmap_per_thread(evlist, ops, mp);
-
-	return mmap_per_cpu(evlist, ops, mp);
-}
-
-int perf_evlist__mmap(struct perf_evlist *evlist, int pages)
-{
-	struct perf_mmap_param mp;
-	struct perf_evlist_mmap_ops ops = {
-		.get  = perf_evlist__mmap_cb_get,
-		.mmap = perf_evlist__mmap_cb_mmap,
-	};
-
-	evlist->mmap_len = (pages + 1) * page_size;
-
-	return perf_evlist__mmap_ops(evlist, &ops, &mp);
-}
-
-void perf_evlist__munmap(struct perf_evlist *evlist)
-{
-	int i;
-
-	if (evlist->mmap) {
-		for (i = 0; i < evlist->nr_mmaps; i++)
-			perf_mmap__munmap(&evlist->mmap[i]);
-	}
-
-	if (evlist->mmap_ovw) {
-		for (i = 0; i < evlist->nr_mmaps; i++)
-			perf_mmap__munmap(&evlist->mmap_ovw[i]);
-	}
-
-	zfree(&evlist->mmap);
-	zfree(&evlist->mmap_ovw);
-}
-
-struct perf_mmap*
-perf_evlist__next_mmap(struct perf_evlist *evlist, struct perf_mmap *map,
-		       bool overwrite)
-{
-	if (map)
-		return map->next;
-
-	return overwrite ? evlist->mmap_ovw_first : evlist->mmap_first;
-}