mirror of
https://github.com/torvalds/linux
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f045b8c4b3
Teach buildid-cache how to add, remove, and update binary objects from other mount namespaces. Allow probe events tracing binaries in different namespaces to add their objects to the probe and build-id caches too. As a handy side effect, this also lets us access SDT probes in binaries from alternate mount namespaces. Signed-off-by: Krister Johansen <kjlx@templeofstupid.com> Tested-by: Brendan Gregg <brendan.d.gregg@gmail.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1499305693-1599-5-git-send-email-kjlx@templeofstupid.com [ Add util/namespaces.c to tools/perf/util/python-ext-sources, to fix the python binding 'perf test' ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
79 lines
2.4 KiB
C
79 lines
2.4 KiB
C
#ifndef __PROBE_FILE_H
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#define __PROBE_FILE_H
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#include "probe-event.h"
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struct strlist;
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struct strfilter;
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/* Cache of probe definitions */
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struct probe_cache_entry {
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struct list_head node;
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bool sdt;
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struct perf_probe_event pev;
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char *spev;
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struct strlist *tevlist;
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};
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struct probe_cache {
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int fd;
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struct list_head entries;
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};
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enum probe_type {
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PROBE_TYPE_U = 0,
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PROBE_TYPE_S,
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PROBE_TYPE_X,
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PROBE_TYPE_STRING,
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PROBE_TYPE_BITFIELD,
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PROBE_TYPE_END,
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};
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#define PF_FL_UPROBE 1
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#define PF_FL_RW 2
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#define for_each_probe_cache_entry(entry, pcache) \
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list_for_each_entry(entry, &pcache->entries, node)
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/* probe-file.c depends on libelf */
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#ifdef HAVE_LIBELF_SUPPORT
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int open_trace_file(const char *trace_file, bool readwrite);
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int probe_file__open(int flag);
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int probe_file__open_both(int *kfd, int *ufd, int flag);
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struct strlist *probe_file__get_namelist(int fd);
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struct strlist *probe_file__get_rawlist(int fd);
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int probe_file__add_event(int fd, struct probe_trace_event *tev);
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int probe_file__del_events(int fd, struct strfilter *filter);
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int probe_file__get_events(int fd, struct strfilter *filter,
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struct strlist *plist);
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int probe_file__del_strlist(int fd, struct strlist *namelist);
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int probe_cache_entry__get_event(struct probe_cache_entry *entry,
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struct probe_trace_event **tevs);
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struct probe_cache *probe_cache__new(const char *target, struct nsinfo *nsi);
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int probe_cache__add_entry(struct probe_cache *pcache,
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struct perf_probe_event *pev,
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struct probe_trace_event *tevs, int ntevs);
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int probe_cache__scan_sdt(struct probe_cache *pcache, const char *pathname);
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int probe_cache__commit(struct probe_cache *pcache);
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void probe_cache__purge(struct probe_cache *pcache);
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void probe_cache__delete(struct probe_cache *pcache);
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int probe_cache__filter_purge(struct probe_cache *pcache,
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struct strfilter *filter);
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struct probe_cache_entry *probe_cache__find(struct probe_cache *pcache,
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struct perf_probe_event *pev);
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struct probe_cache_entry *probe_cache__find_by_name(struct probe_cache *pcache,
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const char *group, const char *event);
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int probe_cache__show_all_caches(struct strfilter *filter);
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bool probe_type_is_available(enum probe_type type);
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bool kretprobe_offset_is_supported(void);
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#else /* ! HAVE_LIBELF_SUPPORT */
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static inline struct probe_cache *probe_cache__new(const char *tgt __maybe_unused, struct nsinfo *nsi __maybe_unused)
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{
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return NULL;
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}
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#define probe_cache__delete(pcache) do {} while (0)
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#endif
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#endif
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