On Sat, Jan 11, 2014 at 04:36:14PM +0100, Jiri Olsa wrote: > On Fri, Jan 10, 2014 at 04:32:03AM -0800, Andi Kleen wrote: > > From: Andi Kleen <a...@linux.intel.com> > > > > I never found the default LBR display mode which generates histograms > > of individual branches particularly useful. > > > > This implements an alternative mode that creates histograms over complete > > branch traces, instead of individual branches, similar to how normal > > callgraphs are handled. This is done by putting it in > > front of the normal callgraph and then using the normal callgraph > > histogram infrastructure to unify them. > > > > This way in complex functions we can understand the control flow > > that lead to a particular sample. > > > > The default output is unchanged. > > > > This is only implemented in perf report, no change to record > > or anywhere else. > > > > This adds the basic code to report: > > - add a new "branch" option to the -g option parser to enable this mode > > - when the flag is set include the LBR into the callstack in machine.c. > > The rest of the history code is unchanged and doesn't know the difference > > between LBR entry and normal call entry. > > sounds like nice idea, but I could not get the patchset applied > on acme's perf/core
It was on Linus master. I tried to rebase on perf/core, but it seems to be totally broken by itself. All the config tests fail on my opensuse system. Arnaldo? Auto-detecting system features: ... backtrace: [ OFF ] ... dwarf: [ OFF ] ... fortify-source: [ OFF ] ... glibc: [ OFF ] ... gtk2: [ OFF ] ... gtk2-infobar: [ OFF ] ... libaudit: [ OFF ] ... libbfd: [ OFF ] ... libelf: [ OFF ] ... libelf-getphdrnum: [ OFF ] ... libelf-mmap: [ OFF ] ... libnuma: [ OFF ] ... libperl: [ OFF ] ... libpython: [ OFF ] ... libpython-version: [ OFF ] ... libslang: [ OFF ] ... libunwind: [ OFF ] ... on-exit: [ OFF ] ... stackprotector-all: [ OFF ] ... timerfd: [ OFF ] config/Makefile:282: *** No gnu/libc-version.h found, please install glibc-dev[el]/glibc-static. Stop. make: *** [all] Error 2 -Andi -- 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/
