ping, any feedback? thanks, jirka
On Thu, Apr 17, 2014 at 07:39:09PM +0200, Jiri Olsa wrote: > hi, > trying to speedup DWARF unwind report code by factoring > related code: > - caching sample's registers access > - keep dso data file descriptor open for the > life of the dso object > - replace dso cache code by mapping dso data file > directly for the life of the dso object > > The speedup is mainly for libunwind unwind. The libdw will benefit > mainly from cached registers access, because it handles dso data > accesses by itself.. and anyway it's still faster ;-). > > Also reachable in here: > git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git > perf/core_unwind_speedup > > thanks, > jirka > > Cc: Corey Ashford <[email protected]> > Cc: David Ahern <[email protected]> > Cc: Frederic Weisbecker <[email protected]> > Cc: Ingo Molnar <[email protected]> > Cc: Namhyung Kim <[email protected]> > Cc: Paul Mackerras <[email protected]> > Cc: Peter Zijlstra <[email protected]> > Cc: Arnaldo Carvalho de Melo <[email protected]> > Cc: Jean Pihet <[email protected]> > Signed-off-by: Jiri Olsa <[email protected]> > --- > Jiri Olsa (3): > perf tools: Cache register accesses for unwind processing > perf tools: Cache dso data file descriptor > perf tools: Replace dso data cache with mapped data > > tools/perf/tests/dso-data.c | 7 ++++ > tools/perf/util/dso.c | 200 > +++++++++++++++++++++++++++--------------------------------------------------------------------- > tools/perf/util/dso.h | 14 ++----- > tools/perf/util/event.h | 5 +++ > tools/perf/util/perf_regs.c | 10 ++++- > tools/perf/util/perf_regs.h | 4 +- > tools/perf/util/unwind-libunwind.c | 2 - > 7 files changed, 83 insertions(+), 159 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
