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2008-06-24 David Smith <dsmith@redhat.com>
From: Srinivasa DS <srinivasa@in.ibm.com>
* syscall.h: Added powerpc support.
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2008-06-23 David Smith <dsmith@redhat.com>
* task_finder.c (__stp_utrace_task_finder_target_quiesce): Fixed
vm_callback offset by shifting it left PAGE_SHIFT bits.
(__stp_target_call_vm_callback): Ditto.
(__stp_utrace_task_finder_target_syscall_exit): Ditto.
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* commit 'origin/pr6429-comp-unwindsyms':
utrace process("PATH") also populate session unwindsym_modules
populate sess.unwindsym_modules set from dwarf probes
add module-name vector to session object, command line arguments
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* commit 'origin/master':
PR5643: fix .statement(NUM) regression
powerpc register+arg access
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* commit 'origin/master':
Fix assignment optimization expected results.
PR6538: more testsuite tweaks for read-only warnings
PR6538: more tapset fixes
PR6538: explain why absentstats.stp logs will contain warnings
PR6538: fix treatment of initialized globals
Use pointer_arg to fetch arguments for syscall.utime and compat_utime.
Optimize compound and binary expression assignments.
Check new (sub) functions of _struct_utimbuf_* and _struct_compat_utimbuf_*.
PR6538: tapset changes
PR6538: testsuite changes
PR5001: fix test suite collateral damage
PR6538: warn about read-only variables
Add some scripts and descriptions to the systemtap.examples.
PR5001: Remove _stp_ctime and always use ctime.
Use tr1/unordered_map instead of the deprecated ext/hash_map.
PR6524: ctime() on bad values hangs system.
Optimize away assignments in other contexts.
Optimize away assignments in other contexts.
dummy commit for testing systemtap-cvs notification
Remove sa_restorer initialization.
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* commit 'origin/master':
suppress "pass-2 failed" messages from "stap -l FOOBAR"; just produce empty output
make the mod_cu_function_cache a hash_map instead of map for more go-go
PR5643: function caching for much faster syscall.* pass-2 processing
Fixed PR 6499 (utrace probe crash).
note "make installcheck" in post-build checkout
Ignores signals when removing the temporary directory.
Add appropriate ChangeLog entry for earlier checkin.
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* commit 'origin/master':
PR 5955 - Accept ; terminated globals
Factored returnval() out of returnstr(), for use in dwarfless probing.
Converted more aliases to use arg numbers instead of names. In particular,
Revert "PR6487: extend blacklist with relay/timer subsystem"
Add syscalls_by_pid.meta, syscalls_by_proc.meta,
PR6487: extend blacklist with relay/timer subsystem
Adjust iotime.meta description.
* iotime.meta: New.
Fix for PR 6500.
Update ChangeLog
* sleeptime.meta, wait4time.meta: New.
systemtap.examples futexes.meta change futex.stp to futexes.stp.
In ioblock.stp ioblock.end set bytes_done depending on kernel version.
PR6492: make listing mode warning-free
PR5648: Fix unaligned access warning in stp_print_flush on ia64
PR5648: Fix memcpy's endianess issue.
futexes.meta, nettop.meta, pf2.meta: New.
Clean up output.
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* commit 'origin/dwarfless':
The beginnings of a no-dwarf version of syscalls.stp. Selected
Added CPU REGISTERS and NUMBERED FUNCTION ARGUMENTS sections to
Replaced [u_]arg() with [u]int_arg(), [u]long_arg(), {s|u}32_arg(),
Added support for register(), u_register(), arg(), and u_arg() functions.
* testsuite/{semok,semko}/nodwf*.stp
PR 4311 - Function boundary tracing without debuginfo: Phase I
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* master:
PR444886: add .../build/... to default debuginfo search path
More signal cleanup.
Fix problem handling SIG_CHLD
Cleanup signal handling for staprun.
PR6481: timer reset needs irqs reenabled
Made runtime/task_finder.c improvements.
PR6474: use position-independent-executable security c/ld-flags for stap* binaries
2008-05-01 William Cohen <wcohen@redhat.com>
add git commit summary guidelines
PR5648: Fix unaligned access warning on ia64.
PR6008: Increase the limitation of the buffer size to 4095MB.
PR5645: Fix sub-buffer size calculation and debug messages.
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* master:
PR6466: broad side-effect free statement elision
Made utrace probes more robust.
2008-04-27 William Cohen <wcohen@redhat.com>
2008-04-27 William Cohen <wcohen@redhat.com>
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pr6429-comp-unwindsyms
* 'master' of ssh://sources.redhat.com/git/systemtap:
cleanup: remove never-implemented runtime TEST_MODE compile flag
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* master:
revert commit f0e6dc6304; overload detection logic was fine already
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pr6429-comp-unwindsyms
* 'master' of ssh://sources.redhat.com/git/systemtap:
simplify systemtap.spec configuration vars
Handles markers with no format string.
Fixed task_finder.c kernel 2.6.25 change.
PR6454: fix "stap -l" listing of space-laden probe point names
Move examples to testsuite/systemtap.examples.
PR6451: avoid one class of staprun shutdown deadlock (module/.ctl filehandle = 0)
Made kernel 2.6.25 changes in task_finder.c.
Move examples to testsuite/systemtap.examples
PR6416: extend probing blacklist with more init/exit sections
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2008-06-23 David Smith <dsmith@redhat.com>
* task_finder.c (__stp_utrace_task_finder_report_exec): Handles
relative exec paths correctly.
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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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2008-06-23 David Smith <dsmith@redhat.com>
* regs.h: Removed trailing semicolons from macro definitions.
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Instead, visit_expr_statement can explicitly load a pointer to use for
back-references.
I also decided to be less-clever about reusing expr_statements. It's a
little leakier as a result, but I like having less magic in the air.
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* systemtap.base/optim_voidstmt.stp: Add tests for various statement
optimizations that we should now be eliding.
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PR 6644
* elaborate.cxx (dead_stmtexpr_remover::visit_block): Flatten nested
block statements into a single block.
(dead_stmtexpr_remover::visit_if_statement): Remove the possibility
of if_statements with a null thenblock. When an if lacks both then
and else, either remove it completely or reduce it to a simple
statment evaluating the condition. With an else and no then, invert
the condition and else becomes then.
(void_statement_reducer): New optimization visitor that breaks
statements in void context into smaller pieces, to expose more
optimization opportunities.
(semantic_pass_opt5, semantic_pass_opt6): Bump opt5 to opt6, and
create a new opt5 that runs through void_statement_reducer.
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