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    perf tools: Support for DWARF CFI unwinding on post processing · 71ad0f5e
    Jiri Olsa 提交于
    This brings the support for DWARF cfi unwinding on perf post
    processing. Call frame informations are retrieved and then passed
    to libunwind that requests memory and register content from the
    applications.
    
    Adding unwind object to handle the user stack backtrace based
    on the user register values and user stack dump.
    
    The unwind object access the libunwind via remote interface
    and provides to it all the necessary data to unwind the stack.
    
    The unwind interface provides following function:
    	unwind__get_entries
    
    And callback (specified in above function) to retrieve
    the backtrace entries:
    	typedef int (*unwind_entry_cb_t)(struct unwind_entry *entry,
    					 void *arg);
    Signed-off-by: NJiri Olsa <jolsa@redhat.com>
    Original-patch-by: NFrederic Weisbecker <fweisbec@gmail.com>
    Cc: "Frank Ch. Eigler" <fche@redhat.com>
    Cc: Arun Sharma <asharma@fb.com>
    Cc: Benjamin Redelings <benjamin.redelings@nescent.org>
    Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
    Cc: Cyrill Gorcunov <gorcunov@openvz.org>
    Cc: Frank Ch. Eigler <fche@redhat.com>
    Cc: Frederic Weisbecker <fweisbec@gmail.com>
    Cc: Ingo Molnar <mingo@elte.hu>
    Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
    Cc: Paul Mackerras <paulus@samba.org>
    Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
    Cc: Robert Richter <robert.richter@amd.com>
    Cc: Stephane Eranian <eranian@google.com>
    Cc: Tom Zanussi <tzanussi@gmail.com>
    Cc: Ulrich Drepper <drepper@gmail.com>
    Link: http://lkml.kernel.org/r/1344345647-11536-12-git-send-email-jolsa@redhat.com
    [ Replaced use of perf_session by usage of perf_evsel ]
    Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
    71ad0f5e
builtin-top.c 34.6 KB