From patchwork Sat Jan 12 09:55:50 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 1023875 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 43cFs837nVz9s55 for ; Sat, 12 Jan 2019 21:12:12 +1100 (AEDT) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 43cFs820Y8zDr68 for ; Sat, 12 Jan 2019 21:12:12 +1100 (AEDT) X-Original-To: linuxppc-dev@lists.ozlabs.org Delivered-To: linuxppc-dev@lists.ozlabs.org Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=c-s.fr (client-ip=93.17.236.30; helo=pegase1.c-s.fr; envelope-from=christophe.leroy@c-s.fr; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=c-s.fr Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 43cFVL4t2BzDr5k for ; Sat, 12 Jan 2019 20:55:54 +1100 (AEDT) Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 43cFVD5cCDz9vCJB; Sat, 12 Jan 2019 10:55:48 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id RYDiNUq-PhEz; Sat, 12 Jan 2019 10:55:48 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 43cFVD56K8z9vCJ7; Sat, 12 Jan 2019 10:55:48 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 78FDD8B77F; Sat, 12 Jan 2019 10:55:51 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id OhEhaUPJ23NM; Sat, 12 Jan 2019 10:55:51 +0100 (CET) Received: from po16846vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 33A188B74C; Sat, 12 Jan 2019 10:55:51 +0100 (CET) Received: by po16846vm.idsi0.si.c-s.fr (Postfix, from userid 0) id F1FAF7183D; Sat, 12 Jan 2019 09:55:50 +0000 (UTC) Message-Id: In-Reply-To: References: From: Christophe Leroy Subject: [PATCH v13 09/10] powerpc/64: Remove CURRENT_THREAD_INFO To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Nicholas Piggin , Mike Rapoport Date: Sat, 12 Jan 2019 09:55:50 +0000 (UTC) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Now that current_thread_info is located at the beginning of 'current' task struct, CURRENT_THREAD_INFO macro is not really needed any more. This patch replaces it by loads of the value at PACACURRENT(r13). Signed-off-by: Christophe Leroy --- arch/powerpc/include/asm/exception-64s.h | 4 ++-- arch/powerpc/include/asm/thread_info.h | 4 ---- arch/powerpc/kernel/entry_64.S | 10 +++++----- arch/powerpc/kernel/exceptions-64e.S | 2 +- arch/powerpc/kernel/exceptions-64s.S | 2 +- arch/powerpc/kernel/idle_book3e.S | 2 +- arch/powerpc/kernel/idle_power4.S | 2 +- arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 6 +++--- 8 files changed, 14 insertions(+), 18 deletions(-) diff --git a/arch/powerpc/include/asm/exception-64s.h b/arch/powerpc/include/asm/exception-64s.h index 3b4767ed3ec5..dd6a5ae7a769 100644 --- a/arch/powerpc/include/asm/exception-64s.h +++ b/arch/powerpc/include/asm/exception-64s.h @@ -671,7 +671,7 @@ END_FTR_SECTION_NESTED(ftr,ftr,943) #define RUNLATCH_ON \ BEGIN_FTR_SECTION \ - CURRENT_THREAD_INFO(r3, r1); \ + ld r3, PACACURRENT(r13); \ ld r4,TI_LOCAL_FLAGS(r3); \ andi. r0,r4,_TLF_RUNLATCH; \ beql ppc64_runlatch_on_trampoline; \ @@ -721,7 +721,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CTRL) #ifdef CONFIG_PPC_970_NAP #define FINISH_NAP \ BEGIN_FTR_SECTION \ - CURRENT_THREAD_INFO(r11, r1); \ + ld r11, PACACURRENT(r13); \ ld r9,TI_LOCAL_FLAGS(r11); \ andi. r10,r9,_TLF_NAPPING; \ bnel power4_fixup_nap; \ diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index c959b8d66cac..8e1d0195ac36 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -17,10 +17,6 @@ #define THREAD_SIZE (1 << THREAD_SHIFT) -#ifdef CONFIG_PPC64 -#define CURRENT_THREAD_INFO(dest, sp) stringify_in_c(ld dest, PACACURRENT(r13)) -#endif - #ifndef __ASSEMBLY__ #include #include diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index 01d0706d873f..83bddacd7a17 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -166,7 +166,7 @@ system_call: /* label this so stack traces look sane */ li r10,IRQS_ENABLED std r10,SOFTE(r1) - CURRENT_THREAD_INFO(r11, r1) + ld r11, PACACURRENT(r13) ld r10,TI_FLAGS(r11) andi. r11,r10,_TIF_SYSCALL_DOTRACE bne .Lsyscall_dotrace /* does not return */ @@ -213,7 +213,7 @@ system_call: /* label this so stack traces look sane */ ld r3,RESULT(r1) #endif - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACACURRENT(r13) ld r8,_MSR(r1) #ifdef CONFIG_PPC_BOOK3S @@ -348,7 +348,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_HAS_PPR) /* Repopulate r9 and r10 for the syscall path */ addi r9,r1,STACK_FRAME_OVERHEAD - CURRENT_THREAD_INFO(r10, r1) + ld r10, PACACURRENT(r13) ld r10,TI_FLAGS(r10) cmpldi r0,NR_syscalls @@ -746,7 +746,7 @@ _GLOBAL(ret_from_except_lite) mtmsrd r10,1 /* Update machine state */ #endif /* CONFIG_PPC_BOOK3E */ - CURRENT_THREAD_INFO(r9, r1) + ld r9, PACACURRENT(r13) ld r3,_MSR(r1) #ifdef CONFIG_PPC_BOOK3E ld r10,PACACURRENT(r13) @@ -860,7 +860,7 @@ resume_kernel: 1: bl preempt_schedule_irq /* Re-test flags and eventually loop */ - CURRENT_THREAD_INFO(r9, r1) + ld r9, PACACURRENT(r13) ld r4,TI_FLAGS(r9) andi. r0,r4,_TIF_NEED_RESCHED bne 1b diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S index 20f14996281d..04ee24789f80 100644 --- a/arch/powerpc/kernel/exceptions-64e.S +++ b/arch/powerpc/kernel/exceptions-64e.S @@ -493,7 +493,7 @@ exc_##n##_bad_stack: \ * interrupts happen before the wait instruction. */ #define CHECK_NAPPING() \ - CURRENT_THREAD_INFO(r11, r1); \ + ld r11, PACACURRENT(r13); \ ld r10,TI_LOCAL_FLAGS(r11); \ andi. r9,r10,_TLF_NAPPING; \ beq+ 1f; \ diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index 9e253ce27e08..c7c4e2d6f98f 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -1629,7 +1629,7 @@ do_hash_page: ori r0,r0,DSISR_BAD_FAULT_64S@l and. r0,r4,r0 /* weird error? */ bne- handle_page_fault /* if not, try to insert a HPTE */ - CURRENT_THREAD_INFO(r11, r1) + ld r11, PACACURRENT(r13) lwz r0,TI_PREEMPT(r11) /* If we're in an "NMI" */ andis. r0,r0,NMI_MASK@h /* (i.e. an irq when soft-disabled) */ bne 77f /* then don't call hash_page now */ diff --git a/arch/powerpc/kernel/idle_book3e.S b/arch/powerpc/kernel/idle_book3e.S index 4e0d94d02030..31e732c378ad 100644 --- a/arch/powerpc/kernel/idle_book3e.S +++ b/arch/powerpc/kernel/idle_book3e.S @@ -63,7 +63,7 @@ _GLOBAL(\name) 1: /* Let's set the _TLF_NAPPING flag so interrupts make us return * to the right spot */ - CURRENT_THREAD_INFO(r11, r1) + ld r11, PACACURRENT(r13) ld r10,TI_LOCAL_FLAGS(r11) ori r10,r10,_TLF_NAPPING std r10,TI_LOCAL_FLAGS(r11) diff --git a/arch/powerpc/kernel/idle_power4.S b/arch/powerpc/kernel/idle_power4.S index a09b3c7ca176..61ac89fd0a05 100644 --- a/arch/powerpc/kernel/idle_power4.S +++ b/arch/powerpc/kernel/idle_power4.S @@ -68,7 +68,7 @@ BEGIN_FTR_SECTION DSSALL sync END_FTR_SECTION_IFSET(CPU_FTR_ALTIVEC) - CURRENT_THREAD_INFO(r9, r1) + ld r9, PACACURRENT(r13) ld r8,TI_LOCAL_FLAGS(r9) /* set napping bit */ ori r8,r8,_TLF_NAPPING /* so when we take an exception */ std r8,TI_LOCAL_FLAGS(r9) /* it will return to our caller */ diff --git a/arch/powerpc/kernel/trace/ftrace_64_mprofile.S b/arch/powerpc/kernel/trace/ftrace_64_mprofile.S index 32476a6e4e9c..202bec086e3b 100644 --- a/arch/powerpc/kernel/trace/ftrace_64_mprofile.S +++ b/arch/powerpc/kernel/trace/ftrace_64_mprofile.S @@ -229,7 +229,7 @@ ftrace_call: * - r0, r11 & r12 are free */ livepatch_handler: - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACACURRENT(r13) /* Allocate 3 x 8 bytes */ ld r11, TI_livepatch_sp(r12) @@ -256,7 +256,7 @@ livepatch_handler: * restore it. */ - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACACURRENT(r13) ld r11, TI_livepatch_sp(r12) @@ -273,7 +273,7 @@ livepatch_handler: ld r2, -24(r11) /* Pop livepatch stack frame */ - CURRENT_THREAD_INFO(r12, r1) + ld r12, PACACURRENT(r13) subi r11, r11, 24 std r11, TI_livepatch_sp(r12)