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perf tests: Print objdump/dso buffers if they don't match 

Signed-off-by: Jan Stancek <jstancek@redhat.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/d0f42f786bc0e965918e0f422df25617a12a4021.1441181335.git.jstancek@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jan Stancek 2015-09-02 10:19:17 +02:00 committed by Arnaldo Carvalho de Melo
parent edfdb7eab0
commit fd405cf6cf
1 changed files with 16 additions and 0 deletions
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16
tools/perf/tests/code-reading.c
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@ -162,6 +162,18 @@ 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)
{
@ -264,6 +276,10 @@ 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");