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Date: Mon, 17 Dec 2007 20:52:34 -0200 From: Glauber de Oliveira Costa <gcosta@...hat.com> To: linux-kernel@...r.kernel.org Cc: akpm@...ux-foundation.org, glommer@...il.com, tglx@...utronix.de, mingo@...e.hu, ehabkost@...hat.com, jeremy@...p.org, avi@...ranet.com, anthony@...emonkey.ws, virtualization@...ts.linux-foundation.org, rusty@...tcorp.com.au, ak@...e.de, chrisw@...s-sol.org, rostedt@...dmis.org, hpa@...or.com, zach@...are.com, roland@...hat.com, Glauber de Oliveira Costa <gcosta@...hat.com> Subject: [PATCH 11/21] [PATCH] unify thread struct. The thread_struct is not fundamentally different between architectures, and this patch puts it in the common header. What's really unique for each of them is enclosed in ifdefs. Signed-off-by: Glauber de Oliveira Costa <gcosta@...hat.com> --- include/asm-x86/processor.h | 44 ++++++++++++++++++++++++++++++++++++++++ include/asm-x86/processor_32.h | 37 --------------------------------- include/asm-x86/processor_64.h | 32 ----------------------------- 3 files changed, 44 insertions(+), 69 deletions(-) Index: linux-2.6-x86/include/asm-x86/processor.h =================================================================== --- linux-2.6-x86.orig/include/asm-x86/processor.h +++ linux-2.6-x86/include/asm-x86/processor.h @@ -122,6 +122,50 @@ extern void init_scattered_cpuid_feature extern unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c); extern unsigned short num_cache_leaves; +struct thread_struct { +/* cached TLS descriptors. */ + struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES]; + unsigned long sp0; + unsigned long sp; +#ifdef CONFIG_X86_32 + unsigned long sysenter_cs; +#else + unsigned long usersp; /* Copy from PDA */ + unsigned short es, ds, fsindex, gsindex; +#endif + unsigned long ip; + unsigned long fs; + unsigned long gs; +/* Hardware debugging registers */ + unsigned long debugreg0; + unsigned long debugreg1; + unsigned long debugreg2; + unsigned long debugreg3; + unsigned long debugreg6; + unsigned long debugreg7; +/* fault info */ + unsigned long cr2, trap_no, error_code; +/* floating point info */ + union i387_union i387 __attribute__((aligned(16)));; +#ifdef CONFIG_X86_32 +/* virtual 86 mode info */ + struct vm86_struct __user *vm86_info; + unsigned long screen_bitmap; + unsigned long v86flags, v86mask, saved_sp0; + unsigned int saved_fs, saved_gs; +#endif +/* IO permissions */ + unsigned long *io_bitmap_ptr; + unsigned long iopl; +/* max allowed port in the bitmap, in bytes: */ + unsigned io_bitmap_max; +/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */ + unsigned long debugctlmsr; +/* Debug Store - if not 0 points to a DS Save Area configuration; + * goes into MSR_IA32_DS_AREA */ + unsigned long ds_area_msr; +}; + static inline unsigned long native_get_debugreg(int regno) { unsigned long val = 0; /* Damn you, gcc! */ Index: linux-2.6-x86/include/asm-x86/processor_32.h =================================================================== --- linux-2.6-x86.orig/include/asm-x86/processor_32.h +++ linux-2.6-x86/include/asm-x86/processor_32.h @@ -176,43 +176,6 @@ typedef struct { #define ARCH_MIN_TASKALIGN 16 -struct thread_struct { -/* cached TLS descriptors. */ - struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES]; - unsigned long sp0; - unsigned long sysenter_cs; - unsigned long ip; - unsigned long sp; - unsigned long fs; - unsigned long gs; -/* Hardware debugging registers */ - unsigned long debugreg0; - unsigned long debugreg1; - unsigned long debugreg2; - unsigned long debugreg3; - unsigned long debugreg6; - unsigned long debugreg7; -/* fault info */ - unsigned long cr2, trap_no, error_code; -/* floating point info */ - union i387_union i387; -/* virtual 86 mode info */ - struct vm86_struct __user * vm86_info; - unsigned long screen_bitmap; - unsigned long v86flags, v86mask, saved_sp0; - unsigned int saved_fs, saved_gs; -/* IO permissions */ - unsigned long *io_bitmap_ptr; - unsigned long iopl; -/* max allowed port in the bitmap, in bytes: */ - unsigned long io_bitmap_max; -/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */ - unsigned long debugctlmsr; -/* Debug Store - if not 0 points to a DS Save Area configuration; - * goes into MSR_IA32_DS_AREA */ - unsigned long ds_area_msr; -}; - #define INIT_THREAD { \ .sp0 = sizeof(init_stack) + (long)&init_stack, \ .vm86_info = NULL, \ Index: linux-2.6-x86/include/asm-x86/processor_64.h =================================================================== --- linux-2.6-x86.orig/include/asm-x86/processor_64.h +++ linux-2.6-x86/include/asm-x86/processor_64.h @@ -125,38 +125,6 @@ DECLARE_PER_CPU(struct orig_ist, orig_is #define ARCH_MIN_MMSTRUCT_ALIGN 0 #endif -struct thread_struct { - unsigned long sp0; - unsigned long sp; - unsigned long usersp; /* Copy from PDA */ - unsigned long fs; - unsigned long gs; - unsigned short es, ds, fsindex, gsindex; -/* Hardware debugging registers */ - unsigned long debugreg0; - unsigned long debugreg1; - unsigned long debugreg2; - unsigned long debugreg3; - unsigned long debugreg6; - unsigned long debugreg7; -/* fault info */ - unsigned long cr2, trap_no, error_code; -/* floating point info */ - union i387_union i387 __attribute__((aligned(16))); -/* IO permissions. the bitmap could be moved into the GDT, that would make - switch faster for a limited number of ioperm using tasks. -AK */ - int ioperm; - unsigned long *io_bitmap_ptr; - unsigned io_bitmap_max; -/* MSR_IA32_DEBUGCTLMSR value to switch in if TIF_DEBUGCTLMSR is set. */ - unsigned long debugctlmsr; -/* Debug Store - if not 0 points to a DS Save Area configuration; - * goes into MSR_IA32_DS_AREA */ - unsigned long ds_area_msr; -/* cached TLS descriptors. */ - struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES]; -} __attribute__((aligned(16))); - #define INIT_THREAD { \ .sp0 = (unsigned long)&init_stack + sizeof(init_stack) \ } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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