selftests/rseq: Fix ppc32 offsets by using long rather than off_t

The semantic of off_t is for file offsets. We mean to use it as an
offset from a pointer. We really expect it to fit in a single register,
and not use a 64-bit type on 32-bit architectures.

Fix runtime issues on ppc32 where the offset is always 0 due to
inconsistency between the argument type (off_t -> 64-bit) and type
expected by the inline assembler (32-bit).

Signed-off-by: Mathieu Desnoyers <[e-mail]>
Signed-off-by: Peter Zijlstra (Intel) <[e-mail]>
Link: https://lkml.kernel.org/r/[e-mail]

tools/testing/selftests/rseq/basic_percpu_ops_test.c

···
 	for (;;) {
 		struct percpu_list_node *head;
 		intptr_t *targetptr, expectnot, *load;
-		off_t offset;
+		long offset;
 		int ret, cpu;
 
 		cpu = rseq_cpu_start();

tools/testing/selftests/rseq/param_test.c

···
 	for (;;) {
 		struct percpu_list_node *head;
 		intptr_t *targetptr, expectnot, *load;
-		off_t offset;
+		long offset;
 		int ret;
 
 		cpu = rseq_cpu_start();

tools/testing/selftests/rseq/rseq-arm.h

···
 
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	RSEQ_INJECT_C(9)
 

tools/testing/selftests/rseq/rseq-arm64.h

···
 
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	RSEQ_INJECT_C(9)
 

tools/testing/selftests/rseq/rseq-mips.h

···
 
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	RSEQ_INJECT_C(9)
 

tools/testing/selftests/rseq/rseq-ppc.h

···
 
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	RSEQ_INJECT_C(9)
 

tools/testing/selftests/rseq/rseq-s390.h

···
  */
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	RSEQ_INJECT_C(9)
 

tools/testing/selftests/rseq/rseq-skip.h

···
 
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	return -1;
 }

tools/testing/selftests/rseq/rseq-x86.h

···
  */
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	RSEQ_INJECT_C(9)
 
···
  *  *pval += inc;
  */
 static inline __attribute__((always_inline))
-int rseq_offset_deref_addv(intptr_t *ptr, off_t off, intptr_t inc, int cpu)
+int rseq_offset_deref_addv(intptr_t *ptr, long off, intptr_t inc, int cpu)
 {
 	RSEQ_INJECT_C(9)
 
···
  */
 static inline __attribute__((always_inline))
 int rseq_cmpnev_storeoffp_load(intptr_t *v, intptr_t expectnot,
-			       off_t voffp, intptr_t *load, int cpu)
+			       long voffp, intptr_t *load, int cpu)
 {
 	RSEQ_INJECT_C(9)