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kcsan: Support reporting scoped read-write access type 

Support generating the string representation of scoped read-write
accesses for completeness. They will become required in planned changes.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Marco Elver 2021-08-09 13:25:15 +02:00 committed by Paul E. McKenney
parent 6c65eb7568
commit d627c537c2
2 changed files with 9 additions and 3 deletions
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8
kernel/kcsan/kcsan_test.c
View File

@ -210,10 +210,12 @@ static bool report_matches(const struct expect_report *r)
"read-write" :
"write") :
"read");
const bool is_atomic = (ty & KCSAN_ACCESS_ATOMIC);
const bool is_scoped = (ty & KCSAN_ACCESS_SCOPED);
const char *const access_type_aux =
(ty & KCSAN_ACCESS_ATOMIC) ?
" (marked)" :
((ty & KCSAN_ACCESS_SCOPED) ? " (scoped)" : "");
(is_atomic && is_scoped) ? " (marked, scoped)"
: (is_atomic ? " (marked)"
: (is_scoped ? " (scoped)" : ""));
if (i == 1) {
/* Access 2 */

4
kernel/kcsan/report.c
View File

@ -247,6 +247,10 @@ static const char *get_access_type(int type)
return "write (scoped)";
case KCSAN_ACCESS_SCOPED | KCSAN_ACCESS_WRITE | KCSAN_ACCESS_ATOMIC:
return "write (marked, scoped)";
case KCSAN_ACCESS_SCOPED | KCSAN_ACCESS_COMPOUND | KCSAN_ACCESS_WRITE:
return "read-write (scoped)";
case KCSAN_ACCESS_SCOPED | KCSAN_ACCESS_COMPOUND | KCSAN_ACCESS_WRITE | KCSAN_ACCESS_ATOMIC:
return "read-write (marked, scoped)";
default:
BUG();
}