MFC r283460:

Print out unsupported futex operation message only once for the process.

2 files changed, 46 insertions, 23 deletions

diff --git a/sys/compat/linux/linux_emul.h b/sys/compat/linux/linux_emul.h
index 3558b0a..7262093 100644
--- a/sys/compat/linux/linux_emul.h
+++ b/sys/compat/linux/linux_emul.h
@@ -61,6 +61,7 @@ int	linux_common_execve(struct thread *, struct image_args *);
 #define	LINUX_XDEPR_REQUEUEOP	0x00000001	/* uses deprecated
 						   futex REQUEUE op*/
 #define	LINUX_XUNSUP_EPOLL	0x00000002	/* unsupported epoll events */
+#define	LINUX_XUNSUP_FUTEXPIOP	0x00000004	/* uses unsupported pi futex */
 
 struct linux_pemuldata {
 	uint32_t	flags;		/* process emuldata flags */
diff --git a/sys/compat/linux/linux_futex.c b/sys/compat/linux/linux_futex.c
index 51851d2..8e6ebad 100644
--- a/sys/compat/linux/linux_futex.c
+++ b/sys/compat/linux/linux_futex.c
@@ -937,29 +937,43 @@ linux_sys_futex(struct thread *td, struct linux_sys_futex_args *args)
 
 	case LINUX_FUTEX_LOCK_PI:
 		/* not yet implemented */
-		linux_msg(td,
-			  "linux_sys_futex: "
-			  "op LINUX_FUTEX_LOCK_PI not implemented\n");
-		LIN_SDT_PROBE0(futex, linux_sys_futex, unimplemented_lock_pi);
+		pem = pem_find(td->td_proc);
+		if ((pem->flags & LINUX_XUNSUP_FUTEXPIOP) == 0) {
+			linux_msg(td,
+				  "linux_sys_futex: "
+				  "unsupported futex_pi op\n");
+			pem->flags |= LINUX_XUNSUP_FUTEXPIOP;
+			LIN_SDT_PROBE0(futex, linux_sys_futex,
+			    unimplemented_lock_pi);
+		}
 		LIN_SDT_PROBE1(futex, linux_sys_futex, return, ENOSYS);
 		return (ENOSYS);
 
 	case LINUX_FUTEX_UNLOCK_PI:
 		/* not yet implemented */
-		linux_msg(td,
-			  "linux_sys_futex: "
-			  "op LINUX_FUTEX_UNLOCK_PI not implemented\n");
-		LIN_SDT_PROBE0(futex, linux_sys_futex, unimplemented_unlock_pi);
+		pem = pem_find(td->td_proc);
+		if ((pem->flags & LINUX_XUNSUP_FUTEXPIOP) == 0) {
+			linux_msg(td,
+				  "linux_sys_futex: "
+				  "unsupported futex_pi op\n");
+			pem->flags |= LINUX_XUNSUP_FUTEXPIOP;
+			LIN_SDT_PROBE0(futex, linux_sys_futex,
+			    unimplemented_unlock_pi);
+		}
 		LIN_SDT_PROBE1(futex, linux_sys_futex, return, ENOSYS);
 		return (ENOSYS);
 
 	case LINUX_FUTEX_TRYLOCK_PI:
 		/* not yet implemented */
-		linux_msg(td,
-			  "linux_sys_futex: "
-			  "op LINUX_FUTEX_TRYLOCK_PI not implemented\n");
-		LIN_SDT_PROBE0(futex, linux_sys_futex,
-		    unimplemented_trylock_pi);
+		pem = pem_find(td->td_proc);
+		if ((pem->flags & LINUX_XUNSUP_FUTEXPIOP) == 0) {
+			linux_msg(td,
+				  "linux_sys_futex: "
+				  "unsupported futex_pi op\n");
+			pem->flags |= LINUX_XUNSUP_FUTEXPIOP;
+			LIN_SDT_PROBE0(futex, linux_sys_futex,
+			    unimplemented_trylock_pi);
+		}
 		LIN_SDT_PROBE1(futex, linux_sys_futex, return, ENOSYS);
 		return (ENOSYS);
 
@@ -986,21 +1000,29 @@ linux_sys_futex(struct thread *td, struct linux_sys_futex_args *args)
 
 	case LINUX_FUTEX_WAIT_REQUEUE_PI:
 		/* not yet implemented */
-		linux_msg(td,
-			  "linux_sys_futex: "
-			  "op FUTEX_WAIT_REQUEUE_PI not implemented\n");
-		LIN_SDT_PROBE0(futex, linux_sys_futex,
-		    unimplemented_wait_requeue_pi);
+		pem = pem_find(td->td_proc);
+		if ((pem->flags & LINUX_XUNSUP_FUTEXPIOP) == 0) {
+			linux_msg(td,
+				  "linux_sys_futex: "
+				  "unsupported futex_pi op\n");
+			pem->flags |= LINUX_XUNSUP_FUTEXPIOP;
+			LIN_SDT_PROBE0(futex, linux_sys_futex,
+			    unimplemented_wait_requeue_pi);
+		}
 		LIN_SDT_PROBE1(futex, linux_sys_futex, return, ENOSYS);
 		return (ENOSYS);
 
 	case LINUX_FUTEX_CMP_REQUEUE_PI:
 		/* not yet implemented */
-		linux_msg(td,
-			    "linux_sys_futex: "
-			    "op LINUX_FUTEX_CMP_REQUEUE_PI not implemented\n");
-		LIN_SDT_PROBE0(futex, linux_sys_futex,
-		    unimplemented_cmp_requeue_pi);
+		pem = pem_find(td->td_proc);
+		if ((pem->flags & LINUX_XUNSUP_FUTEXPIOP) == 0) {
+			linux_msg(td,
+				  "linux_sys_futex: "
+				  "unsupported futex_pi op\n");
+			pem->flags |= LINUX_XUNSUP_FUTEXPIOP;
+			LIN_SDT_PROBE0(futex, linux_sys_futex,
+			    unimplemented_cmp_requeue_pi);
+		}
 		LIN_SDT_PROBE1(futex, linux_sys_futex, return, ENOSYS);
 		return (ENOSYS);