[tip: objtool/core] objtool: Use 'the fallthrough' pseudo-keyword

[tip-bot2 for Ruan Jinjie]

The following commit has been merged into the objtool/core branch of tip:

Commit-ID:     758a74306f1076b50cb9872af18cb900bafd9497
Gitweb:        https://git.kernel.org/tip/758a74306f1076b50cb9872af18cb900bafd9497
Author:        Ruan Jinjie <ruanjinjie@xxxxxxxxxx>
AuthorDate:    Tue, 01 Aug 2023 11:52:30 +08:00
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Tue, 03 Oct 2023 21:37:35 +02:00

objtool: Use 'the fallthrough' pseudo-keyword

Replace the existing /* fallthrough */ comments with the
new 'fallthrough' pseudo-keyword macro:

  https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Ruan Jinjie <ruanjinjie@xxxxxxxxxx>
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Josh Poimboeuf <jpoimboe@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
---
 tools/objtool/arch/x86/decode.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/objtool/arch/x86/decode.c b/tools/objtool/arch/x86/decode.c
index c0f25d0..e327cd8 100644
--- a/tools/objtool/arch/x86/decode.c
+++ b/tools/objtool/arch/x86/decode.c
@@ -291,7 +291,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
 		switch (modrm_reg & 7) {
 		case 5:
 			imm = -imm;
-			/* fallthrough */
+			fallthrough;
 		case 0:
 			/* add/sub imm, %rsp */
 			ADD_OP(op) {
@@ -375,7 +375,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
 			break;
 		}
 
-		/* fallthrough */
+		fallthrough;
 	case 0x88:
 		if (!rex_w)
 			break;
@@ -656,7 +656,7 @@ int arch_decode_instruction(struct objtool_file *file, const struct section *sec
 			break;
 		}
 
-		/* fallthrough */
+		fallthrough;
 
 	case 0xca: /* retf */
 	case 0xcb: /* retf */