linux-kernel - [PATCH] x86, spinlock: Remove obsolete ticket spinlock macros and types

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Message-Id: <20200526122014.25241-1-longman@redhat.com>
Date:   Tue, 26 May 2020 08:20:14 -0400
From:   Waiman Long <longman@...hat.com>
To:     Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>, Will Deacon <will@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "H. Peter Anvin" <hpa@...or.com>, Borislav Petkov <bp@...en8.de>,
        x86@...nel.org
Cc:     linux-kernel@...r.kernel.org, Waiman Long <longman@...hat.com>
Subject: [PATCH] x86, spinlock: Remove obsolete ticket spinlock macros and types

Even though the x86 ticket spinlock code has been removed in the
commit cfd8983f03c7 ("x86, locking/spinlocks: Remove ticket (spin)lock
implementation") a while ago, there are still some ticket spinlock
specific macros and types left in the asm/spinlock_types.h header file
that are no longer used. Remove those as well to avoid confusion.

Signed-off-by: Waiman Long <longman@...hat.com>
---
 arch/x86/include/asm/spinlock_types.h | 22 ----------------------
 1 file changed, 22 deletions(-)

diff --git a/arch/x86/include/asm/spinlock_types.h b/arch/x86/include/asm/spinlock_types.h
index bf3e34b25afc..323db6c5852a 100644
--- a/arch/x86/include/asm/spinlock_types.h
+++ b/arch/x86/include/asm/spinlock_types.h
@@ -3,29 +3,7 @@
 #define _ASM_X86_SPINLOCK_TYPES_H
 
 #include <linux/types.h>
-
-#ifdef CONFIG_PARAVIRT_SPINLOCKS
-#define __TICKET_LOCK_INC	2
-#define TICKET_SLOWPATH_FLAG	((__ticket_t)1)
-#else
-#define __TICKET_LOCK_INC	1
-#define TICKET_SLOWPATH_FLAG	((__ticket_t)0)
-#endif
-
-#if (CONFIG_NR_CPUS < (256 / __TICKET_LOCK_INC))
-typedef u8  __ticket_t;
-typedef u16 __ticketpair_t;
-#else
-typedef u16 __ticket_t;
-typedef u32 __ticketpair_t;
-#endif
-
-#define TICKET_LOCK_INC	((__ticket_t)__TICKET_LOCK_INC)
-
-#define TICKET_SHIFT	(sizeof(__ticket_t) * 8)
-
 #include <asm-generic/qspinlock_types.h>
-
 #include <asm-generic/qrwlock_types.h>
 
 #endif /* _ASM_X86_SPINLOCK_TYPES_H */
-- 
2.18.1