From 7e7814180b334dff97ef8f56c7c40c277ad4531c Mon Sep 17 00:00:00 2001 From: Andy Lutomirski Date: Tue, 2 Aug 2016 14:05:36 -0700 Subject: signal: consolidate {TS,TLF}_RESTORE_SIGMASK code In general, there's no need for the "restore sigmask" flag to live in ti->flags. alpha, ia64, microblaze, powerpc, sh, sparc (64-bit only), tile, and x86 use essentially identical alternative implementations, placing the flag in ti->status. Replace those optimized implementations with an equally good common implementation that stores it in a bitfield in struct task_struct and drop the custom implementations. Additional architectures can opt in by removing their TIF_RESTORE_SIGMASK defines. Link: http://lkml.kernel.org/r/8a14321d64a28e40adfddc90e18a96c086a6d6f9.1468522723.git.luto@kernel.org Signed-off-by: Andy Lutomirski Tested-by: Michael Ellerman [powerpc] Cc: Richard Henderson Cc: Ivan Kokshaysky Cc: Matt Turner Cc: Tony Luck Cc: Fenghua Yu Cc: Michal Simek Cc: Benjamin Herrenschmidt Cc: Paul Mackerras Cc: Yoshinori Sato Cc: Rich Felker Cc: "David S. Miller" Cc: Chris Metcalf Cc: Peter Zijlstra Cc: Borislav Petkov Cc: Brian Gerst Cc: Dmitry Safonov Cc: Oleg Nesterov Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/alpha/include/asm/thread_info.h | 27 --------------------------- arch/ia64/include/asm/thread_info.h | 28 ---------------------------- arch/microblaze/include/asm/thread_info.h | 27 --------------------------- arch/powerpc/include/asm/thread_info.h | 25 ------------------------- arch/sh/include/asm/thread_info.h | 26 -------------------------- arch/sparc/include/asm/thread_info_64.h | 24 ------------------------ arch/tile/include/asm/thread_info.h | 27 --------------------------- arch/x86/include/asm/thread_info.h | 24 ------------------------ 8 files changed, 208 deletions(-) (limited to 'arch') diff --git a/arch/alpha/include/asm/thread_info.h b/arch/alpha/include/asm/thread_info.h index 32e920a83ae5..e9e90bfa2b50 100644 --- a/arch/alpha/include/asm/thread_info.h +++ b/arch/alpha/include/asm/thread_info.h @@ -86,33 +86,6 @@ register struct thread_info *__current_thread_info __asm__("$8"); #define TS_UAC_NOPRINT 0x0001 /* ! Preserve the following three */ #define TS_UAC_NOFIX 0x0002 /* ! flags as they match */ #define TS_UAC_SIGBUS 0x0004 /* ! userspace part of 'osf_sysinfo' */ -#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */ - -#ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, (unsigned long *)&ti->flags)); -} -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->status &= ~TS_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->status & TS_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->status & TS_RESTORE_SIGMASK)) - return false; - ti->status &= ~TS_RESTORE_SIGMASK; - return true; -} -#endif #define SET_UNALIGN_CTL(task,value) ({ \ __u32 status = task_thread_info(task)->status & ~UAC_BITMASK; \ diff --git a/arch/ia64/include/asm/thread_info.h b/arch/ia64/include/asm/thread_info.h index d1212b84fb83..29bd59790d6c 100644 --- a/arch/ia64/include/asm/thread_info.h +++ b/arch/ia64/include/asm/thread_info.h @@ -121,32 +121,4 @@ struct thread_info { /* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */ #define TIF_WORK_MASK (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT)) -#define TS_RESTORE_SIGMASK 2 /* restore signal mask in do_signal() */ - -#ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, &ti->flags)); -} -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->status &= ~TS_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->status & TS_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->status & TS_RESTORE_SIGMASK)) - return false; - ti->status &= ~TS_RESTORE_SIGMASK; - return true; -} -#endif /* !__ASSEMBLY__ */ - #endif /* _ASM_IA64_THREAD_INFO_H */ diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h index 383f387b4eee..e7e8954e9815 100644 --- a/arch/microblaze/include/asm/thread_info.h +++ b/arch/microblaze/include/asm/thread_info.h @@ -148,33 +148,6 @@ static inline struct thread_info *current_thread_info(void) */ /* FPU was used by this task this quantum (SMP) */ #define TS_USEDFPU 0x0001 -#define TS_RESTORE_SIGMASK 0x0002 - -#ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, (unsigned long *)&ti->flags)); -} -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->status &= ~TS_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->status & TS_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->status & TS_RESTORE_SIGMASK)) - return false; - ti->status &= ~TS_RESTORE_SIGMASK; - return true; -} -#endif #endif /* __KERNEL__ */ #endif /* _ASM_MICROBLAZE_THREAD_INFO_H */ diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index b21bb1f72314..87e4b2d8dcd4 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -138,40 +138,15 @@ static inline struct thread_info *current_thread_info(void) /* Don't move TLF_NAPPING without adjusting the code in entry_32.S */ #define TLF_NAPPING 0 /* idle thread enabled NAP mode */ #define TLF_SLEEPING 1 /* suspend code enabled SLEEP mode */ -#define TLF_RESTORE_SIGMASK 2 /* Restore signal mask in do_signal */ #define TLF_LAZY_MMU 3 /* tlb_batch is active */ #define TLF_RUNLATCH 4 /* Is the runlatch enabled? */ #define _TLF_NAPPING (1 << TLF_NAPPING) #define _TLF_SLEEPING (1 << TLF_SLEEPING) -#define _TLF_RESTORE_SIGMASK (1 << TLF_RESTORE_SIGMASK) #define _TLF_LAZY_MMU (1 << TLF_LAZY_MMU) #define _TLF_RUNLATCH (1 << TLF_RUNLATCH) #ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->local_flags |= _TLF_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, &ti->flags)); -} -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->local_flags &= ~_TLF_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->local_flags & _TLF_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->local_flags & _TLF_RESTORE_SIGMASK)) - return false; - ti->local_flags &= ~_TLF_RESTORE_SIGMASK; - return true; -} static inline bool test_thread_local_flags(unsigned int flags) { diff --git a/arch/sh/include/asm/thread_info.h b/arch/sh/include/asm/thread_info.h index 2afa321157be..6c65dcd470ab 100644 --- a/arch/sh/include/asm/thread_info.h +++ b/arch/sh/include/asm/thread_info.h @@ -151,19 +151,10 @@ extern void init_thread_xstate(void); * ever touches our thread-synchronous status, so we don't * have to worry about atomic accesses. */ -#define TS_RESTORE_SIGMASK 0x0001 /* restore signal mask in do_signal() */ #define TS_USEDFPU 0x0002 /* FPU used by this task this quantum */ #ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, (unsigned long *)&ti->flags)); -} - #define TI_FLAG_FAULT_CODE_SHIFT 24 /* @@ -182,23 +173,6 @@ static inline unsigned int get_thread_fault_code(void) return ti->flags >> TI_FLAG_FAULT_CODE_SHIFT; } -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->status &= ~TS_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->status & TS_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->status & TS_RESTORE_SIGMASK)) - return false; - ti->status &= ~TS_RESTORE_SIGMASK; - return true; -} - #endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ diff --git a/arch/sparc/include/asm/thread_info_64.h b/arch/sparc/include/asm/thread_info_64.h index bde59825d06c..3d7b925f6516 100644 --- a/arch/sparc/include/asm/thread_info_64.h +++ b/arch/sparc/include/asm/thread_info_64.h @@ -222,32 +222,8 @@ register struct thread_info *current_thread_info_reg asm("g6"); * * Note that there are only 8 bits available. */ -#define TS_RESTORE_SIGMASK 0x0001 /* restore signal mask in do_signal() */ #ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, &ti->flags)); -} -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->status &= ~TS_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->status & TS_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->status & TS_RESTORE_SIGMASK)) - return false; - ti->status &= ~TS_RESTORE_SIGMASK; - return true; -} #define thread32_stack_is_64bit(__SP) (((__SP) & 0x1) != 0) #define test_thread_64bit_stack(__SP) \ diff --git a/arch/tile/include/asm/thread_info.h b/arch/tile/include/asm/thread_info.h index c1467ac59ce6..b7659b8f1117 100644 --- a/arch/tile/include/asm/thread_info.h +++ b/arch/tile/include/asm/thread_info.h @@ -166,32 +166,5 @@ extern void _cpu_idle(void); #ifdef __tilegx__ #define TS_COMPAT 0x0001 /* 32-bit compatibility mode */ #endif -#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal */ - -#ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, &ti->flags)); -} -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->status &= ~TS_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->status & TS_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->status & TS_RESTORE_SIGMASK)) - return false; - ti->status &= ~TS_RESTORE_SIGMASK; - return true; -} -#endif /* !__ASSEMBLY__ */ #endif /* _ASM_TILE_THREAD_INFO_H */ diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index 89bff044a6f5..b45ffdda3549 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -219,32 +219,8 @@ static inline unsigned long current_stack_pointer(void) * have to worry about atomic accesses. */ #define TS_COMPAT 0x0002 /* 32bit syscall active (64BIT)*/ -#define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */ #ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->status |= TS_RESTORE_SIGMASK; - WARN_ON(!test_bit(TIF_SIGPENDING, (unsigned long *)&ti->flags)); -} -static inline void clear_restore_sigmask(void) -{ - current_thread_info()->status &= ~TS_RESTORE_SIGMASK; -} -static inline bool test_restore_sigmask(void) -{ - return current_thread_info()->status & TS_RESTORE_SIGMASK; -} -static inline bool test_and_clear_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - if (!(ti->status & TS_RESTORE_SIGMASK)) - return false; - ti->status &= ~TS_RESTORE_SIGMASK; - return true; -} static inline bool in_ia32_syscall(void) { -- cgit v1.2.3