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
106 lines
3 KiB
C
106 lines
3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _PERF_UTIL_TRACE_EVENT_H
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#define _PERF_UTIL_TRACE_EVENT_H
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#include <traceevent/event-parse.h>
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#include "parse-events.h"
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struct machine;
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struct perf_sample;
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union perf_event;
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struct perf_tool;
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struct thread;
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struct plugin_list;
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struct trace_event {
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struct pevent *pevent;
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struct plugin_list *plugin_list;
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};
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int trace_event__init(struct trace_event *t);
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void trace_event__cleanup(struct trace_event *t);
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int trace_event__register_resolver(struct machine *machine,
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pevent_func_resolver_t *func);
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struct event_format*
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trace_event__tp_format(const char *sys, const char *name);
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struct event_format *trace_event__tp_format_id(int id);
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int bigendian(void);
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void event_format__fprintf(struct event_format *event,
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int cpu, void *data, int size, FILE *fp);
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void event_format__print(struct event_format *event,
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int cpu, void *data, int size);
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int parse_ftrace_file(struct pevent *pevent, char *buf, unsigned long size);
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int parse_event_file(struct pevent *pevent,
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char *buf, unsigned long size, char *sys);
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unsigned long long
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raw_field_value(struct event_format *event, const char *name, void *data);
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void parse_proc_kallsyms(struct pevent *pevent, char *file, unsigned int size);
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void parse_ftrace_printk(struct pevent *pevent, char *file, unsigned int size);
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void parse_saved_cmdline(struct pevent *pevent, char *file, unsigned int size);
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ssize_t trace_report(int fd, struct trace_event *tevent, bool repipe);
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struct event_format *trace_find_next_event(struct pevent *pevent,
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struct event_format *event);
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unsigned long long read_size(struct event_format *event, void *ptr, int size);
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unsigned long long eval_flag(const char *flag);
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int read_tracing_data(int fd, struct list_head *pattrs);
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struct tracing_data {
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/* size is only valid if temp is 'true' */
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ssize_t size;
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bool temp;
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char temp_file[50];
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};
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struct tracing_data *tracing_data_get(struct list_head *pattrs,
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int fd, bool temp);
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int tracing_data_put(struct tracing_data *tdata);
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struct addr_location;
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struct perf_session;
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struct perf_stat_config;
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struct scripting_ops {
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const char *name;
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int (*start_script) (const char *script, int argc, const char **argv);
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int (*flush_script) (void);
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int (*stop_script) (void);
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void (*process_event) (union perf_event *event,
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struct perf_sample *sample,
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struct perf_evsel *evsel,
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struct addr_location *al);
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void (*process_stat)(struct perf_stat_config *config,
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struct perf_evsel *evsel, u64 tstamp);
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void (*process_stat_interval)(u64 tstamp);
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int (*generate_script) (struct pevent *pevent, const char *outfile);
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};
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extern unsigned int scripting_max_stack;
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int script_spec_register(const char *spec, struct scripting_ops *ops);
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void setup_perl_scripting(void);
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void setup_python_scripting(void);
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struct scripting_context {
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struct pevent *pevent;
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void *event_data;
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};
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int common_pc(struct scripting_context *context);
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int common_flags(struct scripting_context *context);
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int common_lock_depth(struct scripting_context *context);
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#endif /* _PERF_UTIL_TRACE_EVENT_H */
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