[106/127] selftests/vm/pkeys: make gcc check arguments of sigsafe_printf()

Commit Message

Andrew Morton June 4, 2020, 11:51 p.m. UTC

From: Thiago Jung Bauermann <[e-mail]>
Subject: selftests/vm/pkeys: make gcc check arguments of sigsafe_printf()

This will help us ensure we print pkey_reg_t values correctly in different
architectures.

Link: http://lkml.kernel.org/r/[e-mail]
Signed-off-by: Thiago Jung Bauermann <[e-mail]>
Signed-off-by: Sandipan Das <[e-mail]>
Acked-by: Dave Hansen <[e-mail]>
Cc: "Desnes A. Nunes do Rosario" <[e-mail]>
Cc: Florian Weimer <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Ram Pai <[e-mail]>
Cc: "Aneesh Kumar K.V" <[e-mail]>
Cc: Michael Ellerman <[e-mail]>
Cc: Michal Hocko <[e-mail]>
Cc: Michal Suchanek <[e-mail]>
Cc: Shuah Khan <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>
---

 tools/testing/selftests/vm/pkey-helpers.h |    4 ++++
 1 file changed, 4 insertions(+)

Patch

--- a/tools/testing/selftests/vm/pkey-helpers.h~selftests-vm-pkeys-make-gcc-check-arguments-of-sigsafe_printf
+++ a/tools/testing/selftests/vm/pkey-helpers.h
@@ -27,6 +27,10 @@ 
 #define DPRINT_IN_SIGNAL_BUF_SIZE 4096
 extern int dprint_in_signal;
 extern char dprint_in_signal_buffer[DPRINT_IN_SIGNAL_BUF_SIZE];
+
+#ifdef __GNUC__
+__attribute__((format(printf, 1, 2)))
+#endif
 static inline void sigsafe_printf(const char *format, ...)
 {
 	va_list ap;