On Sun, Jul 22, 2012 at 02:14:37PM +0200, Jiri Olsa wrote: > 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: Jiri Olsa <jo...@redhat.com> > Signed-off-by: Frederic Weisbecker <fweis...@gmail.com> > --- > tools/perf/Makefile | 2 + > tools/perf/arch/x86/Makefile | 3 + > tools/perf/arch/x86/util/unwind.c | 111 ++++ > tools/perf/builtin-report.c | 24 +- > tools/perf/builtin-script.c | 16 +- > tools/perf/builtin-top.c | 5 +- > tools/perf/util/include/linux/compiler.h | 1 + > tools/perf/util/map.h | 7 +- > .../perf/util/scripting-engines/trace-event-perl.c | 3 +- > .../util/scripting-engines/trace-event-python.c | 3 +- > tools/perf/util/session.c | 61 ++- > tools/perf/util/session.h | 3 +- > tools/perf/util/trace-event-scripting.c | 3 +- > tools/perf/util/trace-event.h | 5 +- > tools/perf/util/unwind.c | 567 > ++++++++++++++++++++ > tools/perf/util/unwind.h | 34 ++ > 16 files changed, 811 insertions(+), 37 deletions(-) > create mode 100644 tools/perf/arch/x86/util/unwind.c > create mode 100644 tools/perf/util/unwind.c > create mode 100644 tools/perf/util/unwind.h > > diff --git a/tools/perf/Makefile b/tools/perf/Makefile > index d0c3291..c18c790 100644 > --- a/tools/perf/Makefile > +++ b/tools/perf/Makefile > @@ -328,6 +328,7 @@ LIB_H += util/cgroup.h > LIB_H += $(TRACE_EVENT_DIR)event-parse.h > LIB_H += util/target.h > LIB_H += util/perf_regs.h > +LIB_H += util/unwind.h > > LIB_OBJS += $(OUTPUT)util/abspath.o > LIB_OBJS += $(OUTPUT)util/alias.o > @@ -513,6 +514,7 @@ else > EXTLIBS += $(LIBUNWIND_LIBS) > BASIC_CFLAGS := $(LIBUNWIND_CFLAGS) $(BASIC_CFLAGS) > BASIC_LDFLAGS := $(LIBUNWIND_LDFLAGS) $(BASIC_LDFLAGS) > + LIB_OBJS += $(OUTPUT)util/unwind.o > endif > > ifdef NO_NEWT > diff --git a/tools/perf/arch/x86/Makefile b/tools/perf/arch/x86/Makefile > index 744e629..815841c 100644 > --- a/tools/perf/arch/x86/Makefile > +++ b/tools/perf/arch/x86/Makefile > @@ -2,4 +2,7 @@ ifndef NO_DWARF > PERF_HAVE_DWARF_REGS := 1 > LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o > endif > +ifndef NO_LIBUNWIND > +LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/unwind.o > +endif > LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o > diff --git a/tools/perf/arch/x86/util/unwind.c > b/tools/perf/arch/x86/util/unwind.c > new file mode 100644 > index 0000000..78d956e > --- /dev/null > +++ b/tools/perf/arch/x86/util/unwind.c > @@ -0,0 +1,111 @@ > + > +#include <errno.h> > +#include <libunwind.h> > +#include "perf_regs.h" > +#include "../../util/unwind.h" > + > +#ifdef ARCH_X86_64 > +int unwind__arch_reg_id(int regnum)
Please try to avoid __ in function names. We used that convention before but we gave up because that's actually more painful than anything. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
