| Commit message (Collapse) | Author | Age | Files | Lines |
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* runtime/task_finder_vma.c (stap_remove_vma_map_info): Return negative
status on failure.
(stap_find_vma_map_info): Likewise.
(stap_find_vma_map_info_user): New function.
(stap_drop_vma_maps): New function.
* runtime/sym.h (addr): Renamed to static_addr, to store addresses for
sections which are always mapped at the same address.
(_stp_module_relocate): Add extra struct task_struct *tsk argument.
* runtime/sym.c (_stp_tf_exec_cb): New callback, calls stap_drop_vma_maps.
(_stp_tf_mmap_cb): Don't store address in module.section, but call
stap_add_vma_map_info() per tsk->group_leader for matched module.
Don't register empty/null modules.
(_stp_module_relocate): Take extra struct task_struct *tsk argument,
cache last tsk used. Only use section->static_addr for none dynamic
modules. Use stap_find_vma_map_info_user() to locate dynamic modules.
(_stp_mod_sec_lookup): Add extra argument unsigned long *rel_addr to
optionally store relative address when module/section found.
(_stp_kallsyms_lookup): Use _stp_mod_sec_lookup to find relative address.
(_stp_sym_init): Register _stp_tf_exec_cb in stap_task_finder_target.
Add error check to see if task finder could be initialized.
* dwflpp.cxx (emit_address): Pass NULL for kernel/modules and current for
user tasks to _stp_module_relocate.
* runtime/transport/symbols.c (_stp_do_relocation): Set new static_addr
_stp_section field.
* runtime/unwind.c (adjustStartLoc): Take new struct task_struct *tsk
argument and pass to stap_find_vma_map_info_user and _stp_module_relocate
to find adjusted addr.
(_stp_search_unwind_hdr): Pass through struct task_struct *tsk.
(unwind_frame): Likewise.
* tapset/context-symbols.stp (probemod): Add NULL to _stp_mod_sec_lookup
call to indicate we aren't interested in relative address.
* tapsets.cxx (dwarf_derived_probe_group::emit_module_init): Pass NULL to
_stp_module_relocate to indicate kernel/module address.
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* runtime/task_finder_vma.c (__stp_tf_get_vma_entry_addr): Deleted.
(struct __stp_tf_vma_entry): Replace module by user void* field.
(stap_add_vma_map_info): Take a void *user arg.
(stap_find_vma_map_info): Take a void **user arg.
* runtime/sym.c (_stp_mod_sec_lookup): Use stap_find_vma_map_info.
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* runtime/task_finder_vma.c: Replace all mutex calls with appropriate
read or write (un)lock calls.
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All callers of __stp_tf_get_vma_map_entry_internal lock and unlock
the mutex correctly themselves in all cases. This unlock would trigger
a double unlock.
* runtime/task_finder_vma.c (__stp_tf_get_vma_map_entry_internal):
Don't mutex_unlock(&__stp_tf_vma_mutex).
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* tapsets.cxx (utrace_derived_probe_group::emit_module_decls):
Always emit vm callback probe for __stp_tf_vm_cb.
* runtime/task_finder.c (__stp_tf_vm_cb): Always expose, move _stp_dbug
statements under ifdef DEBUG_TASK_FINDER_VMA. Find and record
corresponding module when vm_path not NULL.
* runtime/task_finder_vma.c (struct __stp_tf_vma_entry): Add _stp_module.
(stap_add_vma_map_info): Add _stp_module argument and assign.
(__stp_tf_get_vma_entry_addr): New static function to get
the __stp_tf_vma_entry given an address.
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tracing conditional on DEBUG_TASK_FINDER_VMA
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2008-08-08 David Smith <dsmith@redhat.com>
* task_finder.c (__stp_tf_vm_cb): Added calls to save/delete vma
information.
* task_finder_vma.c (__stp_tf_vma_map_hash): New function.
(__stp_tf_get_vma_map_entry_internal): Ditto.
(stap_add_vma_map_info): Ditto.
(stap_remove_vma_map_info): Ditto.
(stap_find_vma_map_info): Ditto.
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2008-07-21 David Smith <dsmith@redhat.com>
* task_finder_vma.c (__stp_tf_vma_initialize): New function to
initialize the free list.
(__stp_tf_vma_put_free_entry): Puts a vma entry back on the free
list.
(__stp_tf_add_vma): Instead of allocating a vma entry, grab one
from the free list by calling __stp_tf_vma_put_free_entry().
(__stp_tf_remove_vma_entry): Instead of freeing a vma entry, call
__stp_tf_vma_put_free_entry() to put it on the free list instead.
* task_finder.c (stap_start_task_finder): Calls
__stp_tf_vma_initialize().
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2008-06-23 David Smith <dsmith@redhat.com>
* task_finder_vma.c (__stp_tf_vma_hash): Improved determination of
whether this is a 64-bit platform.
* syscall.h: Handles kernels with older style register
definitions.
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2008-06-23 David Smith <dsmith@redhat.com>
* tapsets.cxx (utrace_derived_probe_group::emit_probe_decl):
Handles UDPF_NONE value.
(utrace_derived_probe_group::emit_vm_callback_probe_decl): New
function.
(utrace_derived_probe_group::emit_module_decls): Calls
emit_vm_callback_probe_decl() to set up vm_callbacks.
2008-06-23 David Smith <dsmith@redhat.com>
* task_finder.c (__stp_tf_vm_cb): New function.
(stap_register_task_finder_target): Sets up syscall entry and
syscall exit handlers.
(__stp_find_file_based_vma): New function.
(__stp_utrace_task_finder_target_syscall_entry): New function.
Saves vma information off at syscall entry.
(__stp_target_call_vm_callback): New function.
(__stp_utrace_task_finder_target_syscall_exit): New function.
Handles changes to memory maps based on information saved at
syscall entry.
* syscall.h: New file containing syscall function.
* task_finder_vma.c: New file containing saved vma information
handling functions.
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