From patchwork Fri Mar 4 11:18:07 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Alex_Benn=C3=A9e?= X-Patchwork-Id: 8502791 Return-Path: X-Original-To: patchwork-qemu-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 63BE4C0553 for ; Fri, 4 Mar 2016 11:21:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 87DD820165 for ; Fri, 4 Mar 2016 11:21:58 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9718920160 for ; Fri, 4 Mar 2016 11:21:57 +0000 (UTC) Received: from localhost ([::1]:40373 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abnnw-00037V-Ub for patchwork-qemu-devel@patchwork.kernel.org; Fri, 04 Mar 2016 06:21:56 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:35280) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abnkZ-0006AO-Cq for qemu-devel@nongnu.org; Fri, 04 Mar 2016 06:18:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1abnkX-0003sM-NZ for qemu-devel@nongnu.org; Fri, 04 Mar 2016 06:18:27 -0500 Received: from mail-wm0-x235.google.com ([2a00:1450:400c:c09::235]:35934) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1abnkX-0003sF-Cz for qemu-devel@nongnu.org; Fri, 04 Mar 2016 06:18:25 -0500 Received: by mail-wm0-x235.google.com with SMTP id n186so30041152wmn.1 for ; Fri, 04 Mar 2016 03:18:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=p/Wf5EMV5kkWQKfyxtPu9tJaQ/FOunrKipBVbTNBqgg=; b=ZduhEq9trDYKz9WSQ7V8NoA+n7d+KwbA9OInQo+pgUBCyYrjBVqmzjR4STdqsBTO3+ IWtvpx9KRRIBJuvk4Uo37SgTLu1KvJg4WwnvHrnma5cBUFuTltgqa1hSaZFs4swNN4DE A02URmrogY48INv+EB3yPzAsthPID2+AXxXMM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=p/Wf5EMV5kkWQKfyxtPu9tJaQ/FOunrKipBVbTNBqgg=; b=Is+w6occX/sEPpHz8gH3OdzdlyvmzXwAqGdR7z4oDqeOAgSLglwDkAquE+/XuyuI1M q/8iBRHD3pulTnRlwMejOcBBbVmHENDwrVXQYCWpmejCa1+dDR+ar+5RaT90ZWWxxoDA ZckGRsBf13346sb7h7Xbp41uiQ7pgexf50rlnUa7cJmZlgQYizmTt+VkKCAVgJQ+oDWd Z3J90UzIqx4AoNHnvakNPZFYSG/z7FtaDBbrSxuCIMmy1bhTqx18P92c9uOhPG5J0HIk uoETR0Trd8ZQfPKuNPAGHPq67iqq2eLefIxp1dWGWAJzL0XIxvl8rMghyHKOMFAXn9le 8tdw== X-Gm-Message-State: AD7BkJKz0wFX1CVYBT2NYHYF75UP4yMjzyJ41+JI42Lat/77g9sBYfYsRL6mNxm9eTWXUNt1 X-Received: by 10.194.94.229 with SMTP id df5mr9699357wjb.133.1457090304845; Fri, 04 Mar 2016 03:18:24 -0800 (PST) Received: from zen.linaro.local ([81.128.185.34]) by smtp.gmail.com with ESMTPSA id 198sm2828696wml.22.2016.03.04.03.18.17 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 04 Mar 2016 03:18:20 -0800 (PST) Received: from zen.linaroharston (localhost [127.0.0.1]) by zen.linaro.local (Postfix) with ESMTP id E0E7F3E02FD; Fri, 4 Mar 2016 11:18:13 +0000 (GMT) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Date: Fri, 4 Mar 2016 11:18:07 +0000 Message-Id: <1457090287-8021-10-git-send-email-alex.bennee@linaro.org> X-Mailer: git-send-email 2.7.2 In-Reply-To: <1457090287-8021-1-git-send-email-alex.bennee@linaro.org> References: <1457090287-8021-1-git-send-email-alex.bennee@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2a00:1450:400c:c09::235 Cc: Peter Crosthwaite , crosthwaitepeter@gmail.com, pbonzini@redhat.com, =?UTF-8?q?Alex=20Benn=C3=A9e?= , aurelien@aurel32.net, rth@twiddle.net Subject: [Qemu-devel] [PATCH v8 9/9] cputlb: modernise the debug support X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To avoid cluttering the code with #ifdef legs we wrap up the print statements into a tlb_debug() macro. As access to the virtual TLB can get quite heavy defining DEBUG_TLB_LOG will ensure all the logs go to the qemu_log target of CPU_LOG_MMU instead of stderr. This remains compile time optional as these debug statements haven't been considered for usefulness for user visible logging. I've also removed DEBUG_TLB_CHECK which wasn't used. Signed-off-by: Alex Bennée Reviewed-by: Richard Henderson --- v2 - ensure compiler checks format strings even if debug is optimised out v5 - reword commit to justify not just using qemu_log at this time v6 - add r-b tag v8 - clean-up new flush_by_mmuidx functions - make message simpler --- cputlb.c | 88 ++++++++++++++++++++++++++++++++-------------------------------- 1 file changed, 44 insertions(+), 44 deletions(-) diff --git a/cputlb.c b/cputlb.c index 3973030..c136241 100644 --- a/cputlb.c +++ b/cputlb.c @@ -30,8 +30,30 @@ #include "exec/ram_addr.h" #include "tcg/tcg.h" -//#define DEBUG_TLB -//#define DEBUG_TLB_CHECK +/* DEBUG defines, enable DEBUG_TLB_LOG to log to the CPU_LOG_MMU target */ +/* #define DEBUG_TLB */ +/* #define DEBUG_TLB_LOG */ + +#ifdef DEBUG_TLB +# define DEBUG_TLB_GATE 1 +# ifdef DEBUG_TLB_LOG +# define DEBUG_TLB_LOG_GATE 1 +# else +# define DEBUG_TLB_LOG_GATE 0 +# endif +#else +# define DEBUG_TLB_GATE 0 +# define DEBUG_TLB_LOG_GATE 0 +#endif + +#define tlb_debug(fmt, ...) do { \ + if (DEBUG_TLB_LOG_GATE) { \ + qemu_log_mask(CPU_LOG_MMU, "%s: " fmt, __func__, \ + ## __VA_ARGS__); \ + } else if (DEBUG_TLB_GATE) { \ + fprintf(stderr, "%s: " fmt, __func__, ## __VA_ARGS__); \ + } \ +} while (0) /* statistics */ int tlb_flush_count; @@ -52,9 +74,8 @@ void tlb_flush(CPUState *cpu, int flush_global) { CPUArchState *env = cpu->env_ptr; -#if defined(DEBUG_TLB) - printf("tlb_flush:\n"); -#endif + tlb_debug("(%d)\n", flush_global); + /* must reset current TB so that interrupts cannot modify the links while we are modifying them */ cpu->current_tb = NULL; @@ -73,9 +94,7 @@ static inline void v_tlb_flush_by_mmuidx(CPUState *cpu, va_list argp) { CPUArchState *env = cpu->env_ptr; -#if defined(DEBUG_TLB) - printf("tlb_flush_by_mmuidx:"); -#endif + tlb_debug("start\n"); /* must reset current TB so that interrupts cannot modify the links while we are modifying them */ cpu->current_tb = NULL; @@ -87,18 +106,12 @@ static inline void v_tlb_flush_by_mmuidx(CPUState *cpu, va_list argp) break; } -#if defined(DEBUG_TLB) - printf(" %d", mmu_idx); -#endif + tlb_debug("%d\n", mmu_idx); memset(env->tlb_table[mmu_idx], -1, sizeof(env->tlb_table[0])); memset(env->tlb_v_table[mmu_idx], -1, sizeof(env->tlb_v_table[0])); } -#if defined(DEBUG_TLB) - printf("\n"); -#endif - memset(cpu->tb_jmp_cache, 0, sizeof(cpu->tb_jmp_cache)); } @@ -128,16 +141,14 @@ void tlb_flush_page(CPUState *cpu, target_ulong addr) int i; int mmu_idx; -#if defined(DEBUG_TLB) - printf("tlb_flush_page: " TARGET_FMT_lx "\n", addr); -#endif + tlb_debug("page :" TARGET_FMT_lx "\n", addr); + /* Check if we need to flush due to large pages. */ if ((addr & env->tlb_flush_mask) == env->tlb_flush_addr) { -#if defined(DEBUG_TLB) - printf("tlb_flush_page: forced full flush (" - TARGET_FMT_lx "/" TARGET_FMT_lx ")\n", - env->tlb_flush_addr, env->tlb_flush_mask); -#endif + tlb_debug("forcing full flush (" + TARGET_FMT_lx "/" TARGET_FMT_lx ")\n", + env->tlb_flush_addr, env->tlb_flush_mask); + tlb_flush(cpu, 1); return; } @@ -170,16 +181,14 @@ void tlb_flush_page_by_mmuidx(CPUState *cpu, target_ulong addr, ...) va_start(argp, addr); -#if defined(DEBUG_TLB) - printf("tlb_flush_page_by_mmu_idx: " TARGET_FMT_lx, addr); -#endif + tlb_debug("addr "TARGET_FMT_lx"\n", addr); + /* Check if we need to flush due to large pages. */ if ((addr & env->tlb_flush_mask) == env->tlb_flush_addr) { -#if defined(DEBUG_TLB) - printf(" forced full flush (" - TARGET_FMT_lx "/" TARGET_FMT_lx ")\n", - env->tlb_flush_addr, env->tlb_flush_mask); -#endif + tlb_debug("forced full flush (" + TARGET_FMT_lx "/" TARGET_FMT_lx ")\n", + env->tlb_flush_addr, env->tlb_flush_mask); + v_tlb_flush_by_mmuidx(cpu, argp); va_end(argp); return; @@ -198,9 +207,7 @@ void tlb_flush_page_by_mmuidx(CPUState *cpu, target_ulong addr, ...) break; } -#if defined(DEBUG_TLB) - printf(" %d", mmu_idx); -#endif + tlb_debug("idx %d\n", mmu_idx); tlb_flush_entry(&env->tlb_table[mmu_idx][i], addr); @@ -211,10 +218,6 @@ void tlb_flush_page_by_mmuidx(CPUState *cpu, target_ulong addr, ...) } va_end(argp); -#if defined(DEBUG_TLB) - printf("\n"); -#endif - tb_flush_jmp_cache(cpu, addr); } @@ -367,12 +370,9 @@ void tlb_set_page_with_attrs(CPUState *cpu, target_ulong vaddr, section = address_space_translate_for_iotlb(cpu, asidx, paddr, &xlat, &sz); assert(sz >= TARGET_PAGE_SIZE); -#if defined(DEBUG_TLB) - qemu_log_mask(CPU_LOG_MMU, - "tlb_set_page: vaddr=" TARGET_FMT_lx " paddr=0x" TARGET_FMT_plx - " prot=%x idx=%d\n", - vaddr, paddr, prot, mmu_idx); -#endif + tlb_debug("vaddr=" TARGET_FMT_lx " paddr=0x" TARGET_FMT_plx + " prot=%x idx=%d\n", + vaddr, paddr, prot, mmu_idx); address = vaddr; if (!memory_region_is_ram(section->mr) && !memory_region_is_romd(section->mr)) {