From: Jesper Juhl Date: Thu, 23 Jun 2005 07:09:07 +0000 (-0700) Subject: [PATCH] streamline preempt_count type across archs X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dcd497f99a1ef29a7c5e76142965be77e9dacabd;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git [PATCH] streamline preempt_count type across archs The preempt_count member of struct thread_info is currently either defined as int, unsigned int or __s32 depending on arch. This patch makes the type of preempt_count an int on all archs. Having preempt_count be an unsigned type prevents the catching of preempt_count < 0 bugs, and using int on some archs and __s32 on others is not exactely "neat" - much nicer when it's just int all over. A previous version of this patch was already ACK'ed by Robert Love, and the only change in this version of the patch compared to the one he ACK'ed is that this one also makes sure the preempt_count member is consistently commented. Signed-off-by: Jesper Juhl Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/include/asm-arm/thread_info.h b/include/asm-arm/thread_info.h index 66c585c50cf..8252a4cd860 100644 --- a/include/asm-arm/thread_info.h +++ b/include/asm-arm/thread_info.h @@ -49,7 +49,7 @@ struct cpu_context_save { */ struct thread_info { unsigned long flags; /* low level flags */ - __s32 preempt_count; /* 0 => preemptable, <0 => bug */ + int preempt_count; /* 0 => preemptable, <0 => bug */ mm_segment_t addr_limit; /* address limit */ struct task_struct *task; /* main task structure */ struct exec_domain *exec_domain; /* execution domain */ diff --git a/include/asm-arm26/thread_info.h b/include/asm-arm26/thread_info.h index 50f41b50268..aff3e5699c6 100644 --- a/include/asm-arm26/thread_info.h +++ b/include/asm-arm26/thread_info.h @@ -44,7 +44,7 @@ struct cpu_context_save { */ struct thread_info { unsigned long flags; /* low level flags */ - __s32 preempt_count; /* 0 => preemptable, <0 => bug */ + int preempt_count; /* 0 => preemptable, <0 => bug */ mm_segment_t addr_limit; /* address limit */ struct task_struct *task; /* main task structure */ struct exec_domain *exec_domain; /* execution domain */ diff --git a/include/asm-cris/thread_info.h b/include/asm-cris/thread_info.h index 53193feb082..5ba4b7865cc 100644 --- a/include/asm-cris/thread_info.h +++ b/include/asm-cris/thread_info.h @@ -31,7 +31,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: 0-0xBFFFFFFF for user-thead diff --git a/include/asm-frv/thread_info.h b/include/asm-frv/thread_info.h index b80a97f50af..c8cba7836f0 100644 --- a/include/asm-frv/thread_info.h +++ b/include/asm-frv/thread_info.h @@ -33,7 +33,7 @@ struct thread_info { unsigned long flags; /* low level flags */ unsigned long status; /* thread-synchronous flags */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: 0-0xBFFFFFFF for user-thead diff --git a/include/asm-h8300/thread_info.h b/include/asm-h8300/thread_info.h index b07c9344776..bfcc755c3bb 100644 --- a/include/asm-h8300/thread_info.h +++ b/include/asm-h8300/thread_info.h @@ -23,7 +23,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ int cpu; /* cpu we're on */ - int preempt_count; /* 0 => preemptable, <0 => BUG*/ + int preempt_count; /* 0 => preemptable, <0 => BUG */ struct restart_block restart_block; }; diff --git a/include/asm-i386/thread_info.h b/include/asm-i386/thread_info.h index 2cd57271801..95add81237e 100644 --- a/include/asm-i386/thread_info.h +++ b/include/asm-i386/thread_info.h @@ -31,7 +31,7 @@ struct thread_info { unsigned long flags; /* low level flags */ unsigned long status; /* thread-synchronous flags */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: diff --git a/include/asm-ia64/thread_info.h b/include/asm-ia64/thread_info.h index 8d5b7e77028..7dc8951708a 100644 --- a/include/asm-ia64/thread_info.h +++ b/include/asm-ia64/thread_info.h @@ -25,7 +25,7 @@ struct thread_info { __u32 flags; /* thread_info flags (see TIF_*) */ __u32 cpu; /* current CPU */ mm_segment_t addr_limit; /* user-level address space limit */ - __s32 preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ + int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ struct restart_block restart_block; struct { int signo; diff --git a/include/asm-m32r/thread_info.h b/include/asm-m32r/thread_info.h index 9f3a0fcf6e2..7a6be7727a9 100644 --- a/include/asm-m32r/thread_info.h +++ b/include/asm-m32r/thread_info.h @@ -28,7 +28,7 @@ struct thread_info { unsigned long flags; /* low level flags */ unsigned long status; /* thread-synchronous flags */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: 0-0xBFFFFFFF for user-thread diff --git a/include/asm-m68k/thread_info.h b/include/asm-m68k/thread_info.h index 5f58939c59d..2aed24f6fd2 100644 --- a/include/asm-m68k/thread_info.h +++ b/include/asm-m68k/thread_info.h @@ -8,7 +8,7 @@ struct thread_info { struct task_struct *task; /* main task structure */ struct exec_domain *exec_domain; /* execution domain */ - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ __u32 cpu; /* should always be 0 on m68k */ struct restart_block restart_block; diff --git a/include/asm-m68knommu/thread_info.h b/include/asm-m68knommu/thread_info.h index c8153b7c1f5..7b9a3fa3af5 100644 --- a/include/asm-m68knommu/thread_info.h +++ b/include/asm-m68knommu/thread_info.h @@ -36,7 +36,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ int cpu; /* cpu we're on */ - int preempt_count; /* 0 => preemptable, <0 => BUG*/ + int preempt_count; /* 0 => preemptable, <0 => BUG */ struct restart_block restart_block; }; diff --git a/include/asm-mips/thread_info.h b/include/asm-mips/thread_info.h index 768900305e2..42fcd6f2c20 100644 --- a/include/asm-mips/thread_info.h +++ b/include/asm-mips/thread_info.h @@ -27,7 +27,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: 0-0xBFFFFFFF for user-thead diff --git a/include/asm-parisc/thread_info.h b/include/asm-parisc/thread_info.h index fe9b7f8ae4c..57bbb76cb6c 100644 --- a/include/asm-parisc/thread_info.h +++ b/include/asm-parisc/thread_info.h @@ -12,7 +12,7 @@ struct thread_info { unsigned long flags; /* thread_info flags (see TIF_*) */ mm_segment_t addr_limit; /* user-level address space limit */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ + int preempt_count; /* 0=premptable, <0=BUG; will also serve as bh-counter */ struct restart_block restart_block; }; diff --git a/include/asm-ppc/thread_info.h b/include/asm-ppc/thread_info.h index e3b5284a6f9..27903db42ef 100644 --- a/include/asm-ppc/thread_info.h +++ b/include/asm-ppc/thread_info.h @@ -20,7 +20,8 @@ struct thread_info { unsigned long flags; /* low level flags */ unsigned long local_flags; /* non-racy flags */ int cpu; /* cpu we're on */ - int preempt_count; + int preempt_count; /* 0 => preemptable, + <0 => BUG */ struct restart_block restart_block; }; diff --git a/include/asm-ppc64/thread_info.h b/include/asm-ppc64/thread_info.h index 48b7900e90e..0494df6fca7 100644 --- a/include/asm-ppc64/thread_info.h +++ b/include/asm-ppc64/thread_info.h @@ -24,7 +24,7 @@ struct thread_info { struct task_struct *task; /* main task structure */ struct exec_domain *exec_domain; /* execution domain */ int cpu; /* cpu we're on */ - int preempt_count; + int preempt_count; /* 0 => preemptable, <0 => BUG */ struct restart_block restart_block; /* set by force_successful_syscall_return */ unsigned char syscall_noerror; diff --git a/include/asm-s390/thread_info.h b/include/asm-s390/thread_info.h index aade85c53a6..fe101d41e84 100644 --- a/include/asm-s390/thread_info.h +++ b/include/asm-s390/thread_info.h @@ -50,7 +50,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ unsigned int cpu; /* current CPU */ - unsigned int preempt_count; /* 0 => preemptable */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ struct restart_block restart_block; }; diff --git a/include/asm-sh/thread_info.h b/include/asm-sh/thread_info.h index 4bbbd9f3c37..46080cefaff 100644 --- a/include/asm-sh/thread_info.h +++ b/include/asm-sh/thread_info.h @@ -20,7 +20,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ __u32 flags; /* low level flags */ __u32 cpu; - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ struct restart_block restart_block; __u8 supervisor_stack[0]; }; diff --git a/include/asm-sh64/thread_info.h b/include/asm-sh64/thread_info.h index 8a32d6bd0b7..10f024c6a2e 100644 --- a/include/asm-sh64/thread_info.h +++ b/include/asm-sh64/thread_info.h @@ -22,7 +22,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ /* Put the 4 32-bit fields together to make asm offsetting easier. */ - __s32 preempt_count; /* 0 => preemptable, <0 => BUG */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ __u16 cpu; mm_segment_t addr_limit; diff --git a/include/asm-sparc/thread_info.h b/include/asm-sparc/thread_info.h index 104f03c5541..ff6ccb3d24c 100644 --- a/include/asm-sparc/thread_info.h +++ b/include/asm-sparc/thread_info.h @@ -30,9 +30,9 @@ struct thread_info { struct task_struct *task; /* main task structure */ struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ - int cpu; /* cpu we're on */ - int preempt_count; + int preempt_count; /* 0 => preemptable, + <0 => BUG */ int softirq_count; int hardirq_count; diff --git a/include/asm-sparc64/thread_info.h b/include/asm-sparc64/thread_info.h index 517caaba1c8..0cd65295692 100644 --- a/include/asm-sparc64/thread_info.h +++ b/include/asm-sparc64/thread_info.h @@ -46,7 +46,7 @@ struct thread_info { unsigned long fault_address; struct pt_regs *kregs; struct exec_domain *exec_domain; - int preempt_count; + int preempt_count; /* 0 => preemptable, <0 => BUG */ int __pad; unsigned long *utraps; diff --git a/include/asm-um/thread_info.h b/include/asm-um/thread_info.h index 1feaaf148ef..97267f059ef 100644 --- a/include/asm-um/thread_info.h +++ b/include/asm-um/thread_info.h @@ -17,7 +17,7 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ __u32 cpu; /* current CPU */ - __s32 preempt_count; /* 0 => preemptable, + int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; /* thread address space: 0-0xBFFFFFFF for user diff --git a/include/asm-v850/thread_info.h b/include/asm-v850/thread_info.h index e2ef4459375..e4cfad94a55 100644 --- a/include/asm-v850/thread_info.h +++ b/include/asm-v850/thread_info.h @@ -30,7 +30,8 @@ struct thread_info { struct exec_domain *exec_domain; /* execution domain */ unsigned long flags; /* low level flags */ int cpu; /* cpu we're on */ - int preempt_count; + int preempt_count; /* 0 => preemptable, + <0 => BUG */ struct restart_block restart_block; }; diff --git a/include/asm-x86_64/thread_info.h b/include/asm-x86_64/thread_info.h index f4b3b249639..08eb6e4f373 100644 --- a/include/asm-x86_64/thread_info.h +++ b/include/asm-x86_64/thread_info.h @@ -29,7 +29,7 @@ struct thread_info { __u32 flags; /* low level flags */ __u32 status; /* thread synchronous flags */ __u32 cpu; /* current CPU */ - int preempt_count; + int preempt_count; /* 0 => preemptable, <0 => BUG */ mm_segment_t addr_limit; struct restart_block restart_block;