From patchwork Mon Nov 18 21:15:26 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Robert Foley X-Patchwork-Id: 11250279 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 316AC109A for ; Mon, 18 Nov 2019 21:17:55 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id EAA6122310 for ; Mon, 18 Nov 2019 21:17:54 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="TYt2XMi3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EAA6122310 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:39568 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iWoPB-00028J-FS for patchwork-qemu-devel@patchwork.kernel.org; Mon, 18 Nov 2019 16:17:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:35820) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iWoNF-00009M-0U for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:15:56 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iWoNB-0005mT-2v for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:15:52 -0500 Received: from mail-pg1-x543.google.com ([2607:f8b0:4864:20::543]:37967) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1iWoNA-0005m5-QL for qemu-devel@nongnu.org; Mon, 18 Nov 2019 16:15:49 -0500 Received: by mail-pg1-x543.google.com with SMTP id 15so10224440pgh.5 for ; Mon, 18 Nov 2019 13:15:48 -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=SzYBwosOH0RhXIU2AZPKvHTHuDB70z5449ITz+BvFqY=; b=TYt2XMi39KGb9A/5y0IUf+0NOS3PcVzcI4LafzRJc+SRKDh9yJxVYbPBBk0B07xhzy dNoAZ0bU/D16OZe8ajRIpB9aRMkxgyiq9DeE4Jaj3nhP2XXMznvfb0yPiEWkUX1ec3Up U1had5lYWIT1uIUrnq9IOPQIFI9LBRAir6QvOyz4eGUHuu2rYpwCxV7AwgMDgv/T9wHv cntPHC3mNnOLGl/RHiamodpdskqdL5PF/dD2bVevZpDSddW+90RIzu56nUpNDsmF3yfR 7TWYmXfLiWcafi6Fu0sj9xTQh3QkxUcgThsiAISWyukgcH69xztUH5AIKbDwsTBi+C9K L4mQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=SzYBwosOH0RhXIU2AZPKvHTHuDB70z5449ITz+BvFqY=; b=ds8q6HLxwQu+acIB+/O0/C6WXymbVbXpDH9wFiWAsw6KqRYzWmABhI+Uqafm4bYeR/ Urd/nhzrCL9iRFW/qxdB9xtJiUQOcMA8keXNYUz5sWT9o8fTICG3GAN7EWFhKR3+J0at w1glfc8v1NRSahTxpMiRGzUm7MoqjkDpVweH9ZYTbb8seBQF1umeqfU8N96YN4T0lOjJ BjZ8kNqN/E4mQoks8Hvurcd2vnl0219rjMNrU8CXJ22HtUJcoIqmnh4oMv20zTZl47oh ui2EyAGvv4F4oT001Wrtm60ZPaM9PZOPrZeCUkg9X4PfZOGXclcZzWwM/XHcQwevY6CD qlYg== X-Gm-Message-State: APjAAAWbe9CSJh5z6DX5J4AuxZAR7q2me9O4LguKLc1wJ8V30AxbmfSR 0F5zTb3LfPyv6r2n/h7lg97hhWH39wk= X-Google-Smtp-Source: APXvYqx/N4gJKzxkpwDxV3dqjyt6+727cKOOJtqLaeInRJH9YOEeMDVpX25Jnkp0LZoOCpzwP8drGg== X-Received: by 2002:a63:3741:: with SMTP id g1mr1491684pgn.434.1574111747293; Mon, 18 Nov 2019 13:15:47 -0800 (PST) Received: from Rfoley-MA01.usrd.futurewei.com ([12.111.81.71]) by smtp.gmail.com with ESMTPSA id v15sm22301728pfe.44.2019.11.18.13.15.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Nov 2019 13:15:46 -0800 (PST) From: Robert Foley To: qemu-devel@nongnu.org Subject: [PATCH v3 4/6] qemu_log_lock/unlock now preserves the qemu_logfile handle. Date: Mon, 18 Nov 2019 16:15:26 -0500 Message-Id: <20191118211528.3221-5-robert.foley@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191118211528.3221-1-robert.foley@linaro.org> References: <20191118211528.3221-1-robert.foley@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::543 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: richard.henderson@linaro.org, alex.bennee@linaro.org, robert.foley@linaro.org, peter.puhov@linaro.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" qemu_log_lock() now returns a handle and qemu_log_unlock() receives a handle to unlock. This allows for changing the handle during logging and ensures the lock() and unlock() are for the same file. Also in target/tilegx/translate.c removed the qemu_log_lock()/unlock() calls (and the log("\n")), since the translator can longjmp out of the loop if it attempts to translate an instruction in an inaccessible page. Signed-off-by: Robert Foley Reviewed-by: Alex Bennée Reviewed-by: Richard Henderson --- v3 - Changes to one use case to remove use of qemu_log_lock()/unlock(). Only change was target/tilegx/translate.c --- v1 - Moved this up in the patch sequence to be before adding RCU for qemu_logfile. --- include/qemu/log.h | 9 ++++++--- target/tilegx/translate.c | 6 ------ accel/tcg/cpu-exec.c | 4 ++-- accel/tcg/translate-all.c | 4 ++-- accel/tcg/translator.c | 4 ++-- exec.c | 4 ++-- hw/net/can/can_sja1000.c | 4 ++-- net/can/can_socketcan.c | 5 ++--- target/cris/translate.c | 4 ++-- target/i386/translate.c | 5 +++-- target/lm32/translate.c | 4 ++-- target/microblaze/translate.c | 4 ++-- target/nios2/translate.c | 4 ++-- target/unicore32/translate.c | 4 ++-- tcg/tcg.c | 16 ++++++++-------- 15 files changed, 39 insertions(+), 42 deletions(-) diff --git a/include/qemu/log.h b/include/qemu/log.h index a91105b2ad..a7c5b01571 100644 --- a/include/qemu/log.h +++ b/include/qemu/log.h @@ -53,14 +53,17 @@ static inline bool qemu_log_separate(void) * qemu_loglevel is never set when qemu_logfile is unset. */ -static inline void qemu_log_lock(void) +static inline FILE *qemu_log_lock(void) { qemu_flockfile(qemu_logfile); + return logfile->fd; } -static inline void qemu_log_unlock(void) +static inline void qemu_log_unlock(FILE *fd) { - qemu_funlockfile(qemu_logfile); + if (fd) { + qemu_funlockfile(fd); + } } /* Logging functions: */ diff --git a/target/tilegx/translate.c b/target/tilegx/translate.c index 68dd4aa2d8..abce7e1c75 100644 --- a/target/tilegx/translate.c +++ b/target/tilegx/translate.c @@ -2388,7 +2388,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) dc->zero = NULL; if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { - qemu_log_lock(); qemu_log("IN: %s\n", lookup_symbol(pc_start)); } gen_tb_start(tb); @@ -2417,11 +2416,6 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) gen_tb_end(tb, num_insns); tb->size = dc->pc - pc_start; tb->icount = num_insns; - - if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM)) { - qemu_log("\n"); - qemu_log_unlock(); - } } void restore_state_to_opc(CPUTLGState *env, TranslationBlock *tb, diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index c01f59c743..62068d10c3 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -156,7 +156,7 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu, TranslationBlock *itb) #if defined(DEBUG_DISAS) if (qemu_loglevel_mask(CPU_LOG_TB_CPU) && qemu_log_in_addr_range(itb->pc)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); int flags = 0; if (qemu_loglevel_mask(CPU_LOG_TB_FPU)) { flags |= CPU_DUMP_FPU; @@ -165,7 +165,7 @@ static inline tcg_target_ulong cpu_tb_exec(CPUState *cpu, TranslationBlock *itb) flags |= CPU_DUMP_CCOP; #endif log_cpu_state(cpu, flags); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif /* DEBUG_DISAS */ diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 9f48da9472..bb325a2bc4 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1804,7 +1804,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu, #ifdef DEBUG_DISAS if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM) && qemu_log_in_addr_range(tb->pc)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("OUT: [size=%d]\n", gen_code_size); if (tcg_ctx->data_gen_ptr) { size_t code_size = tcg_ctx->data_gen_ptr - tb->tc.ptr; @@ -1829,7 +1829,7 @@ TranslationBlock *tb_gen_code(CPUState *cpu, } qemu_log("\n"); qemu_log_flush(); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c index f977682be7..603d17ff83 100644 --- a/accel/tcg/translator.c +++ b/accel/tcg/translator.c @@ -138,11 +138,11 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db, #ifdef DEBUG_DISAS if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) && qemu_log_in_addr_range(db->pc_first)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("----------------\n"); ops->disas_log(db, cpu); qemu_log("\n"); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif } diff --git a/exec.c b/exec.c index ffdb518535..c994a00f10 100644 --- a/exec.c +++ b/exec.c @@ -1223,13 +1223,13 @@ void cpu_abort(CPUState *cpu, const char *fmt, ...) fprintf(stderr, "\n"); cpu_dump_state(cpu, stderr, CPU_DUMP_FPU | CPU_DUMP_CCOP); if (qemu_log_separate()) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("qemu: fatal: "); qemu_log_vprintf(fmt, ap2); qemu_log("\n"); log_cpu_state(cpu, CPU_DUMP_FPU | CPU_DUMP_CCOP); qemu_log_flush(); - qemu_log_unlock(); + qemu_log_unlock(logfile); qemu_log_close(); } va_end(ap2); diff --git a/hw/net/can/can_sja1000.c b/hw/net/can/can_sja1000.c index 1f81341554..39c78faf9b 100644 --- a/hw/net/can/can_sja1000.c +++ b/hw/net/can/can_sja1000.c @@ -247,8 +247,8 @@ int can_sja_accept_filter(CanSJA1000State *s, static void can_display_msg(const char *prefix, const qemu_can_frame *msg) { int i; + FILE *logfile = qemu_log_lock(); - qemu_log_lock(); qemu_log("%s%03X [%01d] %s %s", prefix, msg->can_id & QEMU_CAN_EFF_MASK, @@ -261,7 +261,7 @@ static void can_display_msg(const char *prefix, const qemu_can_frame *msg) } qemu_log("\n"); qemu_log_flush(); - qemu_log_unlock(); + qemu_log_unlock(logfile); } static void buff2frame_pel(const uint8_t *buff, qemu_can_frame *frame) diff --git a/net/can/can_socketcan.c b/net/can/can_socketcan.c index 8a6ffad40c..29bfacd4f8 100644 --- a/net/can/can_socketcan.c +++ b/net/can/can_socketcan.c @@ -76,8 +76,7 @@ QEMU_BUILD_BUG_ON(offsetof(qemu_can_frame, data) static void can_host_socketcan_display_msg(struct qemu_can_frame *msg) { int i; - - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("[cansocketcan]: %03X [%01d] %s %s", msg->can_id & QEMU_CAN_EFF_MASK, msg->can_dlc, @@ -89,7 +88,7 @@ static void can_host_socketcan_display_msg(struct qemu_can_frame *msg) } qemu_log("\n"); qemu_log_flush(); - qemu_log_unlock(); + qemu_log_unlock(logfile); } static void can_host_socketcan_read(void *opaque) diff --git a/target/cris/translate.c b/target/cris/translate.c index e752bd0609..cb57516a44 100644 --- a/target/cris/translate.c +++ b/target/cris/translate.c @@ -3273,11 +3273,11 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) #if !DISAS_CRIS if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) && qemu_log_in_addr_range(pc_start)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("--------------\n"); qemu_log("IN: %s\n", lookup_symbol(pc_start)); log_target_disas(cs, pc_start, dc->pc - pc_start); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif #endif diff --git a/target/i386/translate.c b/target/i386/translate.c index 77e932d827..7c99ef1385 100644 --- a/target/i386/translate.c +++ b/target/i386/translate.c @@ -2502,14 +2502,15 @@ static void gen_unknown_opcode(CPUX86State *env, DisasContext *s) gen_illegal_opcode(s); if (qemu_loglevel_mask(LOG_UNIMP)) { + FILE *logfile = qemu_log_lock(); target_ulong pc = s->pc_start, end = s->pc; - qemu_log_lock(); + qemu_log("ILLOPC: " TARGET_FMT_lx ":", pc); for (; pc < end; ++pc) { qemu_log(" %02x", cpu_ldub_code(env, pc)); } qemu_log("\n"); - qemu_log_unlock(); + qemu_log_unlock(logfile); } } diff --git a/target/lm32/translate.c b/target/lm32/translate.c index 778cae1e81..73db9654d6 100644 --- a/target/lm32/translate.c +++ b/target/lm32/translate.c @@ -1137,10 +1137,10 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) #ifdef DEBUG_DISAS if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) && qemu_log_in_addr_range(pc_start)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("\n"); log_target_disas(cs, pc_start, dc->pc - pc_start); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif } diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c index bdc7d5326a..525115b041 100644 --- a/target/microblaze/translate.c +++ b/target/microblaze/translate.c @@ -1765,10 +1765,10 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) #if !SIM_COMPAT if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) && qemu_log_in_addr_range(pc_start)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("--------------\n"); log_target_disas(cs, pc_start, dc->pc - pc_start); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif #endif diff --git a/target/nios2/translate.c b/target/nios2/translate.c index e17656e66f..82107bf270 100644 --- a/target/nios2/translate.c +++ b/target/nios2/translate.c @@ -892,11 +892,11 @@ void gen_intermediate_code(CPUState *cs, TranslationBlock *tb, int max_insns) #ifdef DEBUG_DISAS if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) && qemu_log_in_addr_range(tb->pc)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("IN: %s\n", lookup_symbol(tb->pc)); log_target_disas(cs, tb->pc, dc->pc - tb->pc); qemu_log("\n"); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif } diff --git a/target/unicore32/translate.c b/target/unicore32/translate.c index 0e01f35856..0f6891b8aa 100644 --- a/target/unicore32/translate.c +++ b/target/unicore32/translate.c @@ -1994,12 +1994,12 @@ done_generating: #ifdef DEBUG_DISAS if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) && qemu_log_in_addr_range(pc_start)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("----------------\n"); qemu_log("IN: %s\n", lookup_symbol(pc_start)); log_target_disas(cs, pc_start, dc->pc - pc_start); qemu_log("\n"); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif tb->size = dc->pc - pc_start; diff --git a/tcg/tcg.c b/tcg/tcg.c index 5475d49ed1..0511266d85 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -1085,7 +1085,7 @@ void tcg_prologue_init(TCGContext *s) #ifdef DEBUG_DISAS if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM)) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("PROLOGUE: [size=%zu]\n", prologue_size); if (s->data_gen_ptr) { size_t code_size = s->data_gen_ptr - buf0; @@ -1110,7 +1110,7 @@ void tcg_prologue_init(TCGContext *s) } qemu_log("\n"); qemu_log_flush(); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif @@ -4041,11 +4041,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) #ifdef DEBUG_DISAS if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP) && qemu_log_in_addr_range(tb->pc))) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("OP:\n"); tcg_dump_ops(s, false); qemu_log("\n"); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif @@ -4086,11 +4086,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) #ifdef DEBUG_DISAS if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_IND) && qemu_log_in_addr_range(tb->pc))) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("OP before indirect lowering:\n"); tcg_dump_ops(s, false); qemu_log("\n"); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif /* Replace indirect temps with direct temps. */ @@ -4107,11 +4107,11 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) #ifdef DEBUG_DISAS if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_OPT) && qemu_log_in_addr_range(tb->pc))) { - qemu_log_lock(); + FILE *logfile = qemu_log_lock(); qemu_log("OP after optimization and liveness analysis:\n"); tcg_dump_ops(s, true); qemu_log("\n"); - qemu_log_unlock(); + qemu_log_unlock(logfile); } #endif