Messages in this thread | | | Subject | Re: [PATCH v2 4/4] perf tests: print objdump/dso buffers if they don't match | From | Adrian Hunter <> | Date | Thu, 3 Sep 2015 12:12:53 +0300 |
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On 02/09/15 11:19, Jan Stancek wrote: > Signed-off-by: Jan Stancek <jstancek@redhat.com> > Cc: Arnaldo Carvalho de Melo <acme@kernel.org> > Cc: Jiri Olsa <jolsa@kernel.org> > Cc: Adrian Hunter <adrian.hunter@intel.com> > Cc: David Ahern <dsahern@gmail.com> > Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> > Cc: Frederic Weisbecker <fweisbec@gmail.com> > Cc: Ingo Molnar <mingo@kernel.org> > Cc: Namhyung Kim <namhyung@kernel.org> > Cc: Paul Mackerras <paulus@samba.org> > Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
> --- > tools/perf/tests/code-reading.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+) > > diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-reading.c > index e6bf47ff7e91..53a04f899d18 100644 > --- a/tools/perf/tests/code-reading.c > +++ b/tools/perf/tests/code-reading.c > @@ -163,6 +163,18 @@ static int read_via_objdump(const char *filename, u64 addr, void *buf, > return ret; > } > > +static void dump_buf(unsigned char *buf, size_t len) > +{ > + size_t i; > + > + for (i = 0; i < len; i++) { > + pr_debug("0x%02x ", buf[i]); > + if (i % 16 == 15) > + pr_debug("\n"); > + } > + pr_debug("\n"); > +} > + > static int read_object_code(u64 addr, size_t len, u8 cpumode, > struct thread *thread, struct state *state) > { > @@ -265,6 +277,10 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode, > /* The results should be identical */ > if (memcmp(buf1, buf2, len)) { > pr_debug("Bytes read differ from those read by objdump\n"); > + pr_debug("buf1 (dso):\n"); > + dump_buf(buf1, len); > + pr_debug("buf2 (objdump):\n"); > + dump_buf(buf2, len); > return -1; > } > pr_debug("Bytes read match those read by objdump\n"); >
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