[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-0.9.9-264-g89ba308

[fche at sourceware dot org]

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- Log -----------------------------------------------------------------
commit 89ba308506249736c6d0c8490d3c897af4e42df8
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Tue Sep 8 20:23:42 2009 -0400

    PR10524: reduce massive-uprobe script modules' .data consumption
    
    The general approach is to rip out task_finder_tgt's from all over the
    place (including the unwindsym vmcbs, and the stap_uprobe_specs), and
    instead have a small handful of them: one for all unwindsyms, and one
    per abstract probed process (PID or NAME).  These are in turn shared
    by all new stap_unwind_specs by index.
    
    Before:  probe process("./stap").function("*")
    
    -rw-r--r--. 1 fche users 11775283 2009-09-08 20:26 /var/tmp/fche/systemtap/cache/96/stap_96c0479d674db55ec98d8a8750a790e7_7989596.ko
       text    data     bss     dec     hex filename
     445158 8351944 4306472 13103574 c7f1d6 /var/tmp/fche/systemtap/cache/96/stap_96c0479d674db55ec98d8a8750a790e7_7989596.ko
    
    After: (Note how data shrank, though text gained a bit in const-init-data.)
    
    -rw-r--r--. 1 fche users  4021569 2009-09-08 20:27 /var/tmp/fche/systemtap/cache/e4/stap_e46e88634efd850b1586e81c231c239a_8058419.ko
       text    data     bss     dec     hex filename
    1896511    2192 4324808 6223511  5ef697 /var/tmp/fche/systemtap/cache/e4/stap_e46e88634efd850b1586e81c231c239a_8058419.ko
    
    * tapsets.cxx (uprobe_derived_probe_group): Rewrite emit_module_decls,
      and adjust emit_module_init.
    * runtime/sym.c (_stp_sym_init): Initialize unwindsyms-shared vmcb.
    * runtime/sym.h (_stp_module): Remove *vmcb field.
    * translate.cxx (emit_module_init, dump_unwindsyms): Adapt.
    * translate.h (assert_0_indent): Flush output before possibly assert-failing.

commit d1292e962e1207cddf686a0196effa6bc8f6a217
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Tue Sep 8 19:04:16 2009 -0400

    fix typo: KERN_ERROR -> KERN_ERR from last commit

commit 20b69eca3931d338b09134b9c1f5dee2c49ca55b
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Tue Sep 8 17:32:26 2009 -0400

    PR10575: emit KERN_ERRORs on transport control message failures
    
    Suspecting that some kernel->user control messages may be getting
    lost, let's more robustly log these occurrences.
    
    * runtime/transport/control.c (_stp_ctl_send): printk(KERN_ERROR)
      instead of ignoring errors.

commit 7622ef6a5183220fa56dedabaeb8fa87b0e43919
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Mon Sep 7 17:34:39 2009 -0400

    task_finder diagnostics: standardize on STP_DEBUG_PRINTK
    
    * io.c (DEBUG_TASK_FINDER_PRINTK): Remove conditional.

commit 9b7a17471dd57572a63944fe46679c08c23faa13
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Fri Sep 4 16:43:35 2009 -0400

    task_finder diagnostics: emit start_task_finder dbug message at end of fn.
    
    * task_finder.c (stap_start_task_finder): Emit _stp_dbug message at end
      rather at beginning, so printed utrace-engine attach counts reflect
      status at end of initialization rather than at beginning.

commit cf509e712520c6e18ecdf290b5ef85811e8ef013
Author: Frank Ch. Eigler <fche@elastic.org>
Date:   Fri Sep 4 16:41:55 2009 -0400

    runtime diagnostics: remove ANSI goo, add -DSTAP_DEBUG_PRINTK option.
    
    * runtime/io.c (_stp_vlog): Don't put ansi highlighting into debugging
      messages.  #if STAP_DEBUG_PRINTK, direct all diagnostics to appropriate
      printk channel instead of runtime trace buffer.

-----------------------------------------------------------------------

Summary of changes:
 runtime/io.c                |    9 +-
 runtime/sym.c               |   55 ++++++--
 runtime/sym.h               |    2 -
 runtime/task_finder.c       |   11 +--
 runtime/transport/control.c |    3 +
 tapsets.cxx                 |  296 ++++++++++++++++++++++++++++++++-----------
 translate.cxx               |   36 +-----
 translate.h                 |    2 +-
 8 files changed, 276 insertions(+), 138 deletions(-)


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