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authorStan Cox <scox@redhat.com>2010-03-26 17:14:32 -0400
committerStan Cox <scox@redhat.com>2010-03-26 17:14:32 -0400
commitb642c901a918a92fdd6b1167ed02dfe4c50cdd3e (patch)
treed84a778e61848003cd48ea6b42db5614d8a26bae /doc/SystemTap_Beginners_Guide/en-US/extras
parent7ad76102c4cd18e083ea74abd413332da55426d1 (diff)
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Add kprobe user probe semaphore handling.
Adds stap_kprobe_process_found and stap_kprobe_mmap_found handlers and then the task_finder uses those to set the semaphore values. The probe adds user_path and user_lib which are used by the task_finder to decide what object to sniff. * sdt.h (STAP_SEMAPHORE): Also define for kprobes. * tapsets.cxx (dwarf_derived_probe): Add user_path and user_lib. (dwarf_derived_probe::join_group): Enable task finder for kprobes. (dwarf_derived_probe::dwarf_derived_probe): Set user_path and user_lib. (dwarf_derived_probe_group::emit_module_decls): Emit stap_kprobe_mmap_found, sdt_sem_offset, sdt_sem_address, pathname, and finder declarations. Emit stap_kprobe_process_found and stap_kprobe_mmap_found. (dwarf_derived_probe_group::emit_module_init): Setup task finder. (sdt_query::convert_location): Remove TOK_LIBRARY token. (dwarf_builder::build): Set user_path and user_lib. (kprobe_derived_probe): Add path and library. (kprobe_builder::build): Get process and library params
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