16c00db4bb
Pull AFS fixes from David Howells:
"Here's a set of patches that fix a number of bugs in the in-kernel AFS
client, including:
- Fix directory locking to not use individual page locks for
directory reading/scanning but rather to use a semaphore on the
afs_vnode struct as the directory contents must be read in a single
blob and data from different reads must not be mixed as the entire
contents may be shuffled about between reads.
- Fix address list parsing to handle port specifiers correctly.
- Only give up callback records on a server if we actually talked to
that server (we might not be able to access a server).
- Fix some callback handling bugs, including refcounting,
whole-volume callbacks and when callbacks actually get broken in
response to a CB.CallBack op.
- Fix some server/address rotation bugs, including giving up if we
can't probe a server; giving up if a server says it doesn't have a
volume, but there are more servers to try.
- Fix the decoding of fetched statuses to be OpenAFS compatible.
- Fix the handling of server lookups in Cache Manager ops (such as
CB.InitCallBackState3) to use a UUID if possible and to handle no
server being found.
- Fix a bug in server lookup where not all addresses are compared.
- Fix the non-encryption of calls that prevents some servers from
being accessed (this also requires an AF_RXRPC patch that has
already gone in through the net tree).
There's also a patch that adds tracepoints to log Cache Manager ops
that don't find a matching server, either by UUID or by address"
* tag 'afs-fixes-20180514' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix the non-encryption of calls
afs: Fix CB.CallBack handling
afs: Fix whole-volume callback handling
afs: Fix afs_find_server search loop
afs: Fix the handling of an unfound server in CM operations
afs: Add a tracepoint to record callbacks from unlisted servers
afs: Fix the handling of CB.InitCallBackState3 to find the server by UUID
afs: Fix VNOVOL handling in address rotation
afs: Fix AFSFetchStatus decoder to provide OpenAFS compatibility
afs: Fix server rotation's handling of fileserver probe failure
afs: Fix refcounting in callback registration
afs: Fix giving up callbacks on server destruction
afs: Fix address list parsing
afs: Fix directory page locking
312 lines
10 KiB
C
312 lines
10 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_EVLIST_H
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#define __PERF_EVLIST_H 1
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#include <linux/compiler.h>
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#include <linux/kernel.h>
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#include <linux/refcount.h>
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#include <linux/list.h>
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#include <api/fd/array.h>
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#include <stdio.h>
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#include "../perf.h"
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#include "event.h"
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#include "evsel.h"
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#include "mmap.h"
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#include "util.h"
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#include <signal.h>
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#include <unistd.h>
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struct pollfd;
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struct thread_map;
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struct cpu_map;
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struct record_opts;
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#define PERF_EVLIST__HLIST_BITS 8
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#define PERF_EVLIST__HLIST_SIZE (1 << PERF_EVLIST__HLIST_BITS)
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struct perf_evlist {
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struct list_head entries;
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struct hlist_head heads[PERF_EVLIST__HLIST_SIZE];
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int nr_entries;
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int nr_groups;
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int nr_mmaps;
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bool enabled;
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bool has_user_cpus;
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size_t mmap_len;
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int id_pos;
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int is_pos;
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u64 combined_sample_type;
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enum bkw_mmap_state bkw_mmap_state;
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struct {
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int cork_fd;
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pid_t pid;
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} workload;
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struct fdarray pollfd;
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struct perf_mmap *mmap;
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struct perf_mmap *overwrite_mmap;
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struct thread_map *threads;
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struct cpu_map *cpus;
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struct perf_evsel *selected;
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struct events_stats stats;
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struct perf_env *env;
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u64 first_sample_time;
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u64 last_sample_time;
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};
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struct perf_evsel_str_handler {
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const char *name;
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void *handler;
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};
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struct perf_evlist *perf_evlist__new(void);
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struct perf_evlist *perf_evlist__new_default(void);
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struct perf_evlist *perf_evlist__new_dummy(void);
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void perf_evlist__init(struct perf_evlist *evlist, struct cpu_map *cpus,
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struct thread_map *threads);
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void perf_evlist__exit(struct perf_evlist *evlist);
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void perf_evlist__delete(struct perf_evlist *evlist);
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void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
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void perf_evlist__remove(struct perf_evlist *evlist, struct perf_evsel *evsel);
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int __perf_evlist__add_default(struct perf_evlist *evlist, bool precise);
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static inline int perf_evlist__add_default(struct perf_evlist *evlist)
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{
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return __perf_evlist__add_default(evlist, true);
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}
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int __perf_evlist__add_default_attrs(struct perf_evlist *evlist,
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struct perf_event_attr *attrs, size_t nr_attrs);
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#define perf_evlist__add_default_attrs(evlist, array) \
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__perf_evlist__add_default_attrs(evlist, array, ARRAY_SIZE(array))
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int perf_evlist__add_dummy(struct perf_evlist *evlist);
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int perf_evlist__add_newtp(struct perf_evlist *evlist,
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const char *sys, const char *name, void *handler);
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void __perf_evlist__set_sample_bit(struct perf_evlist *evlist,
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enum perf_event_sample_format bit);
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void __perf_evlist__reset_sample_bit(struct perf_evlist *evlist,
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enum perf_event_sample_format bit);
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#define perf_evlist__set_sample_bit(evlist, bit) \
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__perf_evlist__set_sample_bit(evlist, PERF_SAMPLE_##bit)
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#define perf_evlist__reset_sample_bit(evlist, bit) \
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__perf_evlist__reset_sample_bit(evlist, PERF_SAMPLE_##bit)
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int perf_evlist__set_filter(struct perf_evlist *evlist, const char *filter);
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int perf_evlist__set_filter_pid(struct perf_evlist *evlist, pid_t pid);
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int perf_evlist__set_filter_pids(struct perf_evlist *evlist, size_t npids, pid_t *pids);
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struct perf_evsel *
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perf_evlist__find_tracepoint_by_id(struct perf_evlist *evlist, int id);
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struct perf_evsel *
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perf_evlist__find_tracepoint_by_name(struct perf_evlist *evlist,
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const char *name);
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void perf_evlist__id_add(struct perf_evlist *evlist, struct perf_evsel *evsel,
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int cpu, int thread, u64 id);
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int perf_evlist__id_add_fd(struct perf_evlist *evlist,
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struct perf_evsel *evsel,
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int cpu, int thread, int fd);
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int perf_evlist__add_pollfd(struct perf_evlist *evlist, int fd);
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int perf_evlist__alloc_pollfd(struct perf_evlist *evlist);
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int perf_evlist__filter_pollfd(struct perf_evlist *evlist, short revents_and_mask);
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int perf_evlist__poll(struct perf_evlist *evlist, int timeout);
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struct perf_evsel *perf_evlist__id2evsel(struct perf_evlist *evlist, u64 id);
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struct perf_evsel *perf_evlist__id2evsel_strict(struct perf_evlist *evlist,
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u64 id);
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struct perf_sample_id *perf_evlist__id2sid(struct perf_evlist *evlist, u64 id);
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void perf_evlist__toggle_bkw_mmap(struct perf_evlist *evlist, enum bkw_mmap_state state);
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void perf_evlist__mmap_consume(struct perf_evlist *evlist, int idx);
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int perf_evlist__open(struct perf_evlist *evlist);
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void perf_evlist__close(struct perf_evlist *evlist);
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struct callchain_param;
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void perf_evlist__set_id_pos(struct perf_evlist *evlist);
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bool perf_can_sample_identifier(void);
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bool perf_can_record_switch_events(void);
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bool perf_can_record_cpu_wide(void);
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void perf_evlist__config(struct perf_evlist *evlist, struct record_opts *opts,
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struct callchain_param *callchain);
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int record_opts__config(struct record_opts *opts);
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int perf_evlist__prepare_workload(struct perf_evlist *evlist,
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struct target *target,
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const char *argv[], bool pipe_output,
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void (*exec_error)(int signo, siginfo_t *info,
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void *ucontext));
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int perf_evlist__start_workload(struct perf_evlist *evlist);
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struct option;
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int __perf_evlist__parse_mmap_pages(unsigned int *mmap_pages, const char *str);
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int perf_evlist__parse_mmap_pages(const struct option *opt,
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const char *str,
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int unset);
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unsigned long perf_event_mlock_kb_in_pages(void);
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int perf_evlist__mmap_ex(struct perf_evlist *evlist, unsigned int pages,
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unsigned int auxtrace_pages,
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bool auxtrace_overwrite);
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int perf_evlist__mmap(struct perf_evlist *evlist, unsigned int pages);
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void perf_evlist__munmap(struct perf_evlist *evlist);
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size_t perf_evlist__mmap_size(unsigned long pages);
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void perf_evlist__disable(struct perf_evlist *evlist);
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void perf_evlist__enable(struct perf_evlist *evlist);
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void perf_evlist__toggle_enable(struct perf_evlist *evlist);
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int perf_evlist__enable_event_idx(struct perf_evlist *evlist,
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struct perf_evsel *evsel, int idx);
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void perf_evlist__set_selected(struct perf_evlist *evlist,
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struct perf_evsel *evsel);
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void perf_evlist__set_maps(struct perf_evlist *evlist, struct cpu_map *cpus,
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struct thread_map *threads);
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int perf_evlist__create_maps(struct perf_evlist *evlist, struct target *target);
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int perf_evlist__apply_filters(struct perf_evlist *evlist, struct perf_evsel **err_evsel);
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void __perf_evlist__set_leader(struct list_head *list);
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void perf_evlist__set_leader(struct perf_evlist *evlist);
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u64 perf_evlist__read_format(struct perf_evlist *evlist);
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u64 __perf_evlist__combined_sample_type(struct perf_evlist *evlist);
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u64 perf_evlist__combined_sample_type(struct perf_evlist *evlist);
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u64 perf_evlist__combined_branch_type(struct perf_evlist *evlist);
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bool perf_evlist__sample_id_all(struct perf_evlist *evlist);
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u16 perf_evlist__id_hdr_size(struct perf_evlist *evlist);
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int perf_evlist__parse_sample(struct perf_evlist *evlist, union perf_event *event,
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struct perf_sample *sample);
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int perf_evlist__parse_sample_timestamp(struct perf_evlist *evlist,
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union perf_event *event,
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u64 *timestamp);
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bool perf_evlist__valid_sample_type(struct perf_evlist *evlist);
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bool perf_evlist__valid_sample_id_all(struct perf_evlist *evlist);
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bool perf_evlist__valid_read_format(struct perf_evlist *evlist);
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void perf_evlist__splice_list_tail(struct perf_evlist *evlist,
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struct list_head *list);
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static inline bool perf_evlist__empty(struct perf_evlist *evlist)
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{
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return list_empty(&evlist->entries);
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}
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static inline struct perf_evsel *perf_evlist__first(struct perf_evlist *evlist)
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{
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return list_entry(evlist->entries.next, struct perf_evsel, node);
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}
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static inline struct perf_evsel *perf_evlist__last(struct perf_evlist *evlist)
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{
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return list_entry(evlist->entries.prev, struct perf_evsel, node);
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}
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size_t perf_evlist__fprintf(struct perf_evlist *evlist, FILE *fp);
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int perf_evlist__strerror_open(struct perf_evlist *evlist, int err, char *buf, size_t size);
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int perf_evlist__strerror_mmap(struct perf_evlist *evlist, int err, char *buf, size_t size);
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bool perf_evlist__can_select_event(struct perf_evlist *evlist, const char *str);
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void perf_evlist__to_front(struct perf_evlist *evlist,
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struct perf_evsel *move_evsel);
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/**
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* __evlist__for_each_entry - iterate thru all the evsels
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* @list: list_head instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry(list, evsel) \
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list_for_each_entry(evsel, list, node)
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/**
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* evlist__for_each_entry - iterate thru all the evsels
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define evlist__for_each_entry(evlist, evsel) \
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__evlist__for_each_entry(&(evlist)->entries, evsel)
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/**
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* __evlist__for_each_entry_continue - continue iteration thru all the evsels
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* @list: list_head instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry_continue(list, evsel) \
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list_for_each_entry_continue(evsel, list, node)
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/**
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* evlist__for_each_entry_continue - continue iteration thru all the evsels
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define evlist__for_each_entry_continue(evlist, evsel) \
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__evlist__for_each_entry_continue(&(evlist)->entries, evsel)
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/**
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* __evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
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* @list: list_head instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry_reverse(list, evsel) \
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list_for_each_entry_reverse(evsel, list, node)
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/**
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* evlist__for_each_entry_reverse - iterate thru all the evsels in reverse order
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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*/
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#define evlist__for_each_entry_reverse(evlist, evsel) \
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__evlist__for_each_entry_reverse(&(evlist)->entries, evsel)
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/**
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* __evlist__for_each_entry_safe - safely iterate thru all the evsels
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* @list: list_head instance to iterate
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* @tmp: struct evsel temp iterator
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* @evsel: struct evsel iterator
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*/
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#define __evlist__for_each_entry_safe(list, tmp, evsel) \
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list_for_each_entry_safe(evsel, tmp, list, node)
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/**
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* evlist__for_each_entry_safe - safely iterate thru all the evsels
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* @evlist: evlist instance to iterate
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* @evsel: struct evsel iterator
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* @tmp: struct evsel temp iterator
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*/
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#define evlist__for_each_entry_safe(evlist, tmp, evsel) \
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__evlist__for_each_entry_safe(&(evlist)->entries, tmp, evsel)
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void perf_evlist__set_tracking_event(struct perf_evlist *evlist,
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struct perf_evsel *tracking_evsel);
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void perf_event_attr__set_max_precise_ip(struct perf_event_attr *attr);
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struct perf_evsel *
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perf_evlist__find_evsel_by_str(struct perf_evlist *evlist, const char *str);
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struct perf_evsel *perf_evlist__event2evsel(struct perf_evlist *evlist,
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union perf_event *event);
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bool perf_evlist__exclude_kernel(struct perf_evlist *evlist);
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#endif /* __PERF_EVLIST_H */
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