[PATCH] perf report: Fix build error for s390 auxiliary trace support

[Thomas Richter]

Commit 73eeeea48b7e ("perf report: Add raw report support for s390 auxiliary trace")
introduced a compile errors on powerpc:
  util/s390-cpumsf.c: In function âtrailer_timestampâ:
  util/s390-cpumsf.c:222:2: error: dereferencing type-punned pointer will
	break strict-aliasing rules [-Werror=strict-aliasing]
	return *((unsigned long long *) &te->timestamp[te->t]);
	^

  In file included from util/cpumap.h:10:0,
                   from util/s390-cpumsf.c:150:
  util/s390-cpumsf.c: In function âs390_cpumsf_basic_showâ:
  util/s390-cpumsf.c:187:10: error: format â%lxâ expects argument of type
	âlong unsigned intâ, but argument 4 has type
	âsize_t {aka unsigned int}â [-Werror=format=]
     pr_err("Invalid AUX trace basic entry [%#08lx]\n", pos);
            ^

Fix these errors:
1. Use memcpy to extract value from character array.
2. Use %zu as format string in pr_err

Fixes: 73eeeea48b7e
Signed-off-by: Thomas Richter <tmricht@xxxxxxxxxxxxx>
---
 tools/perf/util/s390-cpumsf.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/perf/util/s390-cpumsf.c b/tools/perf/util/s390-cpumsf.c
index 15555604ddb3..2bcb160a08f0 100644
--- a/tools/perf/util/s390-cpumsf.c
+++ b/tools/perf/util/s390-cpumsf.c
@@ -184,7 +184,7 @@ static bool s390_cpumsf_basic_show(const char *color, size_t pos,
 				   struct hws_basic_entry *basic)
 {
 	if (basic->def != 1) {
-		pr_err("Invalid AUX trace basic entry [%#08lx]\n", pos);
+		pr_err("Invalid AUX trace basic entry [%#08zx]\n", pos);
 		return false;
 	}
 	color_fprintf(stdout, color, "    [%#08x] Basic   Def:%04x Inst:%#04x"
@@ -219,7 +219,10 @@ static unsigned long long trailer_timestamp(struct hws_trailer_entry *te)
 	/* te->t set: TOD in STCKE format, bytes 8-15
 	 * to->t not set: TOD in STCK format, bytes 0-7
 	 */
-	return *((unsigned long long *) &te->timestamp[te->t]);
+	unsigned long long ts;
+
+	memcpy(&ts, &te->timestamp[te->t], sizeof(ts));
+	return ts;
 }
 
 /* Display s390 CPU measurement facility trailer entry */
-- 
2.14.3


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