From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28687 invoked by alias); 11 Nov 2009 02:51:06 -0000 Received: (qmail 28653 invoked by uid 9586); 11 Nov 2009 02:51:04 -0000 Date: Wed, 11 Nov 2009 02:51:00 -0000 Message-ID: <20091111025103.28642.qmail@sourceware.org> From: jistone@sourceware.org To: systemtap-cvs@sourceware.org Subject: [SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.0-210-gaf234c4 X-Git-Refname: refs/heads/master X-Git-Reftype: branch X-Git-Oldrev: b513cd75dac185ac258dc8260a01891c30be6251 X-Git-Newrev: af234c407dbab3e62994863272a63b612b0c8c63 Mailing-List: contact systemtap-cvs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-cvs-owner@sourceware.org List-Archive: Reply-To: systemtap@sourceware.org X-SW-Source: 2009-q4/txt/msg00104.txt.bz2 This is an automated email from the git hooks/post-receive script. It was generated because a ref change was pushed to the repository containing the project "systemtap: system-wide probe/trace tool". The branch, master has been updated via af234c407dbab3e62994863272a63b612b0c8c63 (commit) from b513cd75dac185ac258dc8260a01891c30be6251 (commit) Those revisions listed above that are new to this repository have not appeared on any other notification email; so we list those revisions in full, below. - Log ----------------------------------------------------------------- commit af234c407dbab3e62994863272a63b612b0c8c63 Author: Josh Stone Date: Tue Nov 10 18:37:02 2009 -0800 PR5916: Exploit kretprobe data storage area Since 2.6.25, kretprobes can carry a data packet to be filled in an entry_handler. This patch lets us store our implicitly-saved $target variables in .return probes in that data area. * tapset/kretprobe.stp: New get/set functions for kretprobe data. * translate.cxx (c_unparser::emit_common_header): Add context->pi_longs. * tapsets.cxx (dwarf_var_expanding_visitor::visit_target_symbol_saved_return): Switch between the old and new methods of saving $vars in .return probes. (dwarf_var_expanding_visitor::gen_mapped_saved_return): The old way. (dwarf_var_expanding_visitor::gen_kretprobe_saved_return): The new way. (dwarf_derived_probe::join_group): Don't register paired entry-handlers. (dwarf_derived_probe::dwarf_derived_probe): Remember saved-var details. (dwarf_derived_probe_group::emit_module_decls): Output saved-var details. Also split the kretprobe handler whether we're on entry or return. (dwarf_derived_probe_group::emit_module_init): Prepare the entry handler. * testsuite/systemtap.base/kretprobe-vars.stp: Test implicit $var saving. ----------------------------------------------------------------------- Summary of changes: tapset/kretprobe.stp | 56 ++++++++ tapsets.cxx | 187 +++++++++++++++++++++++---- testsuite/systemtap.base/kretprobe-vars.exp | 4 + testsuite/systemtap.base/kretprobe-vars.stp | 70 ++++++++++ translate.cxx | 1 + 5 files changed, 291 insertions(+), 27 deletions(-) create mode 100644 tapset/kretprobe.stp create mode 100644 testsuite/systemtap.base/kretprobe-vars.exp create mode 100644 testsuite/systemtap.base/kretprobe-vars.stp hooks/post-receive -- systemtap: system-wide probe/trace tool