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
179 lines
5 KiB
C
179 lines
5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_HEADER_H
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#define __PERF_HEADER_H
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#include <linux/perf_event.h>
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#include <sys/types.h>
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#include <stdbool.h>
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#include <linux/bitmap.h>
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#include <linux/types.h>
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#include "event.h"
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#include "env.h"
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#include "pmu.h"
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enum {
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HEADER_RESERVED = 0, /* always cleared */
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HEADER_FIRST_FEATURE = 1,
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HEADER_TRACING_DATA = 1,
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HEADER_BUILD_ID,
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HEADER_HOSTNAME,
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HEADER_OSRELEASE,
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HEADER_VERSION,
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HEADER_ARCH,
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HEADER_NRCPUS,
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HEADER_CPUDESC,
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HEADER_CPUID,
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HEADER_TOTAL_MEM,
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HEADER_CMDLINE,
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HEADER_EVENT_DESC,
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HEADER_CPU_TOPOLOGY,
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HEADER_NUMA_TOPOLOGY,
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HEADER_BRANCH_STACK,
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HEADER_PMU_MAPPINGS,
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HEADER_GROUP_DESC,
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HEADER_AUXTRACE,
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HEADER_STAT,
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HEADER_CACHE,
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HEADER_SAMPLE_TIME,
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HEADER_MEM_TOPOLOGY,
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HEADER_LAST_FEATURE,
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HEADER_FEAT_BITS = 256,
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};
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enum perf_header_version {
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PERF_HEADER_VERSION_1,
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PERF_HEADER_VERSION_2,
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};
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struct perf_file_section {
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u64 offset;
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u64 size;
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};
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struct perf_file_header {
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u64 magic;
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u64 size;
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u64 attr_size;
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struct perf_file_section attrs;
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struct perf_file_section data;
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/* event_types is ignored */
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struct perf_file_section event_types;
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DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
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};
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struct perf_pipe_file_header {
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u64 magic;
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u64 size;
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};
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struct perf_header;
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int perf_file_header__read(struct perf_file_header *header,
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struct perf_header *ph, int fd);
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struct perf_header {
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enum perf_header_version version;
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bool needs_swap;
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u64 data_offset;
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u64 data_size;
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u64 feat_offset;
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DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS);
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struct perf_env env;
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};
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struct perf_evlist;
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struct perf_session;
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int perf_session__read_header(struct perf_session *session);
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int perf_session__write_header(struct perf_session *session,
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struct perf_evlist *evlist,
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int fd, bool at_exit);
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int perf_header__write_pipe(int fd);
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void perf_header__set_feat(struct perf_header *header, int feat);
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void perf_header__clear_feat(struct perf_header *header, int feat);
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bool perf_header__has_feat(const struct perf_header *header, int feat);
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int perf_header__set_cmdline(int argc, const char **argv);
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int perf_header__process_sections(struct perf_header *header, int fd,
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void *data,
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int (*process)(struct perf_file_section *section,
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struct perf_header *ph,
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int feat, int fd, void *data));
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int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
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int perf_event__synthesize_features(struct perf_tool *tool,
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struct perf_session *session,
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struct perf_evlist *evlist,
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perf_event__handler_t process);
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int perf_event__synthesize_extra_attr(struct perf_tool *tool,
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struct perf_evlist *evsel_list,
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perf_event__handler_t process,
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bool is_pipe);
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int perf_event__process_feature(struct perf_tool *tool,
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union perf_event *event,
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struct perf_session *session);
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int perf_event__synthesize_attr(struct perf_tool *tool,
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struct perf_event_attr *attr, u32 ids, u64 *id,
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perf_event__handler_t process);
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int perf_event__synthesize_attrs(struct perf_tool *tool,
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struct perf_session *session,
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perf_event__handler_t process);
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int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
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struct perf_evsel *evsel,
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perf_event__handler_t process);
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int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
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struct perf_evsel *evsel,
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perf_event__handler_t process);
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int perf_event__synthesize_event_update_name(struct perf_tool *tool,
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struct perf_evsel *evsel,
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perf_event__handler_t process);
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int perf_event__synthesize_event_update_cpus(struct perf_tool *tool,
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struct perf_evsel *evsel,
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perf_event__handler_t process);
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int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
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struct perf_evlist **pevlist);
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int perf_event__process_event_update(struct perf_tool *tool,
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union perf_event *event,
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struct perf_evlist **pevlist);
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size_t perf_event__fprintf_event_update(union perf_event *event, FILE *fp);
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int perf_event__synthesize_tracing_data(struct perf_tool *tool,
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int fd, struct perf_evlist *evlist,
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perf_event__handler_t process);
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int perf_event__process_tracing_data(struct perf_tool *tool,
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union perf_event *event,
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struct perf_session *session);
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int perf_event__synthesize_build_id(struct perf_tool *tool,
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struct dso *pos, u16 misc,
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perf_event__handler_t process,
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struct machine *machine);
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int perf_event__process_build_id(struct perf_tool *tool,
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union perf_event *event,
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struct perf_session *session);
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bool is_perf_magic(u64 magic);
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#define NAME_ALIGN 64
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struct feat_fd;
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int do_write(struct feat_fd *fd, const void *buf, size_t size);
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int write_padded(struct feat_fd *fd, const void *bf,
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size_t count, size_t count_aligned);
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/*
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* arch specific callback
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*/
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int get_cpuid(char *buffer, size_t sz);
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char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused);
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int strcmp_cpuid_str(const char *s1, const char *s2);
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#endif /* __PERF_HEADER_H */
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