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Commit fd405cf6 authored by Jan Stancek's avatar Jan Stancek Committed by Arnaldo Carvalho de Melo
Browse files

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



Signed-off-by: default avatarJan Stancek <jstancek@redhat.com>
Acked-by: default avatarAdrian 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent edfdb7ea

tools/perf/tests/code-reading.c

+16 −0
Original line number Diff line number Diff line
@@ -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");