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[189.204.159.168]) by smtp.gmail.com with ESMTPSA id n62-20020acaef41000000b002ef646e6690sm4610331oih.53.2022.03.26.06.25.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 26 Mar 2022 06:25:59 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 09/39] *: Use fprintf between qemu_log_trylock/unlock Date: Sat, 26 Mar 2022 07:25:04 -0600 Message-Id: <20220326132534.543738-18-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220326132534.543738-1-richard.henderson@linaro.org> References: <20220326132534.543738-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2607:f8b0:4864:20::c2e (failed) Received-SPF: pass client-ip=2607:f8b0:4864:20::c2e; envelope-from=richard.henderson@linaro.org; helo=mail-oo1-xc2e.google.com X-Spam_score_int: -6 X-Spam_score: -0.7 X-Spam_bar: / X-Spam_report: (-0.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Inside qemu_log, we perform qemu_log_trylock/unlock, which need not be done if we have already performed the lock beforehand. Always check the result of qemu_log_trylock -- only checking qemu_loglevel_mask races with the acquisition of the lock on the logfile. Signed-off-by: Richard Henderson --- include/exec/log.h | 2 +- accel/tcg/cpu-exec.c | 16 ++--- accel/tcg/translate-all.c | 117 +++++++++++++++++++----------------- accel/tcg/translator.c | 10 +-- cpu.c | 14 +++-- hw/net/can/can_sja1000.c | 24 ++++---- net/can/can_socketcan.c | 23 ++++--- target/i386/tcg/translate.c | 14 +++-- tcg/tcg.c | 74 +++++++++++++---------- 9 files changed, 162 insertions(+), 132 deletions(-) diff --git a/include/exec/log.h b/include/exec/log.h index fb595d1eb7..648f4d2263 100644 --- a/include/exec/log.h +++ b/include/exec/log.h @@ -73,7 +73,7 @@ static inline void log_page_dump(const char *operation) { FILE *logfile = qemu_log_trylock(); if (logfile) { - qemu_log("page layout changed following %s\n", operation); + fprintf(logfile, "page layout changed following %s\n", operation); page_dump(logfile); } qemu_log_unlock(logfile); diff --git a/accel/tcg/cpu-exec.c b/accel/tcg/cpu-exec.c index 8d0315de75..8a896e772d 100644 --- a/accel/tcg/cpu-exec.c +++ b/accel/tcg/cpu-exec.c @@ -216,16 +216,18 @@ static inline void log_cpu_exec(target_ulong pc, CPUState *cpu, #if defined(DEBUG_DISAS) if (qemu_loglevel_mask(CPU_LOG_TB_CPU)) { FILE *logfile = qemu_log_trylock(); - int flags = 0; + if (logfile) { + int flags = 0; - if (qemu_loglevel_mask(CPU_LOG_TB_FPU)) { - flags |= CPU_DUMP_FPU; - } + if (qemu_loglevel_mask(CPU_LOG_TB_FPU)) { + flags |= CPU_DUMP_FPU; + } #if defined(TARGET_I386) - flags |= CPU_DUMP_CCOP; + flags |= CPU_DUMP_CCOP; #endif - log_cpu_state(cpu, flags); - qemu_log_unlock(logfile); + log_cpu_state(cpu, flags); + qemu_log_unlock(logfile); + } } #endif /* DEBUG_DISAS */ } diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 71ab863c18..4812619f00 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -1529,68 +1529,75 @@ TranslationBlock *tb_gen_code(CPUState *cpu, if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM) && qemu_log_in_addr_range(tb->pc)) { FILE *logfile = qemu_log_trylock(); - int code_size, data_size; - const tcg_target_ulong *rx_data_gen_ptr; - size_t chunk_start; - int insn = 0; + if (logfile) { + int code_size, data_size; + const tcg_target_ulong *rx_data_gen_ptr; + size_t chunk_start; + int insn = 0; - if (tcg_ctx->data_gen_ptr) { - rx_data_gen_ptr = tcg_splitwx_to_rx(tcg_ctx->data_gen_ptr); - code_size = (const void *)rx_data_gen_ptr - tb->tc.ptr; - data_size = gen_code_size - code_size; - } else { - rx_data_gen_ptr = 0; - code_size = gen_code_size; - data_size = 0; - } - - /* Dump header and the first instruction */ - qemu_log("OUT: [size=%d]\n", gen_code_size); - qemu_log(" -- guest addr 0x" TARGET_FMT_lx " + tb prologue\n", - tcg_ctx->gen_insn_data[insn][0]); - chunk_start = tcg_ctx->gen_insn_end_off[insn]; - log_disas(tb->tc.ptr, chunk_start); - - /* - * Dump each instruction chunk, wrapping up empty chunks into - * the next instruction. The whole array is offset so the - * first entry is the beginning of the 2nd instruction. - */ - while (insn < tb->icount) { - size_t chunk_end = tcg_ctx->gen_insn_end_off[insn]; - if (chunk_end > chunk_start) { - qemu_log(" -- guest addr 0x" TARGET_FMT_lx "\n", - tcg_ctx->gen_insn_data[insn][0]); - log_disas(tb->tc.ptr + chunk_start, chunk_end - chunk_start); - chunk_start = chunk_end; + if (tcg_ctx->data_gen_ptr) { + rx_data_gen_ptr = tcg_splitwx_to_rx(tcg_ctx->data_gen_ptr); + code_size = (const void *)rx_data_gen_ptr - tb->tc.ptr; + data_size = gen_code_size - code_size; + } else { + rx_data_gen_ptr = 0; + code_size = gen_code_size; + data_size = 0; } - insn++; - } - if (chunk_start < code_size) { - qemu_log(" -- tb slow paths + alignment\n"); - log_disas(tb->tc.ptr + chunk_start, code_size - chunk_start); - } + /* Dump header and the first instruction */ + fprintf(logfile, "OUT: [size=%d]\n", gen_code_size); + fprintf(logfile, + " -- guest addr 0x" TARGET_FMT_lx " + tb prologue\n", + tcg_ctx->gen_insn_data[insn][0]); + chunk_start = tcg_ctx->gen_insn_end_off[insn]; + disas(logfile, tb->tc.ptr, chunk_start); - /* Finally dump any data we may have after the block */ - if (data_size) { - int i; - qemu_log(" data: [size=%d]\n", data_size); - for (i = 0; i < data_size / sizeof(tcg_target_ulong); i++) { - if (sizeof(tcg_target_ulong) == 8) { - qemu_log("0x%08" PRIxPTR ": .quad 0x%016" TCG_PRIlx "\n", - (uintptr_t)&rx_data_gen_ptr[i], rx_data_gen_ptr[i]); - } else if (sizeof(tcg_target_ulong) == 4) { - qemu_log("0x%08" PRIxPTR ": .long 0x%08" TCG_PRIlx "\n", - (uintptr_t)&rx_data_gen_ptr[i], rx_data_gen_ptr[i]); - } else { - qemu_build_not_reached(); + /* + * Dump each instruction chunk, wrapping up empty chunks into + * the next instruction. The whole array is offset so the + * first entry is the beginning of the 2nd instruction. + */ + while (insn < tb->icount) { + size_t chunk_end = tcg_ctx->gen_insn_end_off[insn]; + if (chunk_end > chunk_start) { + fprintf(logfile, " -- guest addr 0x" TARGET_FMT_lx "\n", + tcg_ctx->gen_insn_data[insn][0]); + disas(logfile, tb->tc.ptr + chunk_start, + chunk_end - chunk_start); + chunk_start = chunk_end; + } + insn++; + } + + if (chunk_start < code_size) { + fprintf(logfile, " -- tb slow paths + alignment\n"); + disas(logfile, tb->tc.ptr + chunk_start, + code_size - chunk_start); + } + + /* Finally dump any data we may have after the block */ + if (data_size) { + int i; + fprintf(logfile, " data: [size=%d]\n", data_size); + for (i = 0; i < data_size / sizeof(tcg_target_ulong); i++) { + if (sizeof(tcg_target_ulong) == 8) { + fprintf(logfile, + "0x%08" PRIxPTR ": .quad 0x%016" TCG_PRIlx "\n", + (uintptr_t)&rx_data_gen_ptr[i], rx_data_gen_ptr[i]); + } else if (sizeof(tcg_target_ulong) == 4) { + fprintf(logfile, + "0x%08" PRIxPTR ": .long 0x%08" TCG_PRIlx "\n", + (uintptr_t)&rx_data_gen_ptr[i], rx_data_gen_ptr[i]); + } else { + qemu_build_not_reached(); + } } } + fprintf(logfile, "\n"); + qemu_log_flush(); + qemu_log_unlock(logfile); } - qemu_log("\n"); - qemu_log_flush(); - qemu_log_unlock(logfile); } #endif diff --git a/accel/tcg/translator.c b/accel/tcg/translator.c index 1506755f3c..af8798f98b 100644 --- a/accel/tcg/translator.c +++ b/accel/tcg/translator.c @@ -140,10 +140,12 @@ void translator_loop(const TranslatorOps *ops, DisasContextBase *db, if (qemu_loglevel_mask(CPU_LOG_TB_IN_ASM) && qemu_log_in_addr_range(db->pc_first)) { FILE *logfile = qemu_log_trylock(); - qemu_log("----------------\n"); - ops->disas_log(db, cpu); - qemu_log("\n"); - qemu_log_unlock(logfile); + if (logfile) { + fprintf(logfile, "----------------\n"); + ops->disas_log(db, cpu); + fprintf(logfile, "\n"); + qemu_log_unlock(logfile); + } } #endif } diff --git a/cpu.c b/cpu.c index ddcbfc724d..3340bb7538 100644 --- a/cpu.c +++ b/cpu.c @@ -401,12 +401,14 @@ void cpu_abort(CPUState *cpu, const char *fmt, ...) cpu_dump_state(cpu, stderr, CPU_DUMP_FPU | CPU_DUMP_CCOP); if (qemu_log_separate()) { FILE *logfile = qemu_log_trylock(); - 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(logfile); + if (logfile) { + fprintf(logfile, "qemu: fatal: "); + vfprintf(logfile, fmt, ap2); + fprintf(logfile, "\n"); + cpu_dump_state(cpu, logfile, CPU_DUMP_FPU | CPU_DUMP_CCOP); + qemu_log_flush(); + 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 300313dfb8..23d634af6f 100644 --- a/hw/net/can/can_sja1000.c +++ b/hw/net/can/can_sja1000.c @@ -249,19 +249,21 @@ static void can_display_msg(const char *prefix, const qemu_can_frame *msg) int i; FILE *logfile = qemu_log_trylock(); - qemu_log("%s%03X [%01d] %s %s", - prefix, - msg->can_id & QEMU_CAN_EFF_MASK, - msg->can_dlc, - msg->can_id & QEMU_CAN_EFF_FLAG ? "EFF" : "SFF", - msg->can_id & QEMU_CAN_RTR_FLAG ? "RTR" : "DAT"); + if (logfile) { + fprintf(logfile, "%s%03X [%01d] %s %s", + prefix, + msg->can_id & QEMU_CAN_EFF_MASK, + msg->can_dlc, + msg->can_id & QEMU_CAN_EFF_FLAG ? "EFF" : "SFF", + msg->can_id & QEMU_CAN_RTR_FLAG ? "RTR" : "DAT"); - for (i = 0; i < msg->can_dlc; i++) { - qemu_log(" %02X", msg->data[i]); + for (i = 0; i < msg->can_dlc; i++) { + fprintf(logfile, " %02X", msg->data[i]); + } + fprintf(logfile, "\n"); + qemu_log_flush(); + qemu_log_unlock(logfile); } - qemu_log("\n"); - qemu_log_flush(); - 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 4a505643e9..a6388563c3 100644 --- a/net/can/can_socketcan.c +++ b/net/can/can_socketcan.c @@ -77,18 +77,21 @@ static void can_host_socketcan_display_msg(struct qemu_can_frame *msg) { int i; FILE *logfile = qemu_log_trylock(); - qemu_log("[cansocketcan]: %03X [%01d] %s %s", - msg->can_id & QEMU_CAN_EFF_MASK, - msg->can_dlc, - msg->can_id & QEMU_CAN_EFF_FLAG ? "EFF" : "SFF", - msg->can_id & QEMU_CAN_RTR_FLAG ? "RTR" : "DAT"); - for (i = 0; i < msg->can_dlc; i++) { - qemu_log(" %02X", msg->data[i]); + if (logfile) { + fprintf(logfile, "[cansocketcan]: %03X [%01d] %s %s", + msg->can_id & QEMU_CAN_EFF_MASK, + msg->can_dlc, + msg->can_id & QEMU_CAN_EFF_FLAG ? "EFF" : "SFF", + msg->can_id & QEMU_CAN_RTR_FLAG ? "RTR" : "DAT"); + + for (i = 0; i < msg->can_dlc; i++) { + fprintf(logfile, " %02X", msg->data[i]); + } + fprintf(logfile, "\n"); + qemu_log_flush(); + qemu_log_unlock(logfile); } - qemu_log("\n"); - qemu_log_flush(); - qemu_log_unlock(logfile); } static void can_host_socketcan_read(void *opaque) diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index 3fb8b530d8..d71bd2b0f4 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -2581,14 +2581,16 @@ static void gen_unknown_opcode(CPUX86State *env, DisasContext *s) if (qemu_loglevel_mask(LOG_UNIMP)) { FILE *logfile = qemu_log_trylock(); - target_ulong pc = s->pc_start, end = s->pc; + if (logfile) { + target_ulong pc = s->pc_start, end = s->pc; - qemu_log("ILLOPC: " TARGET_FMT_lx ":", pc); - for (; pc < end; ++pc) { - qemu_log(" %02x", cpu_ldub_code(env, pc)); + fprintf(logfile, "ILLOPC: " TARGET_FMT_lx ":", pc); + for (; pc < end; ++pc) { + fprintf(logfile, " %02x", cpu_ldub_code(env, pc)); + } + fprintf(logfile, "\n"); + qemu_log_unlock(logfile); } - qemu_log("\n"); - qemu_log_unlock(logfile); } } diff --git a/tcg/tcg.c b/tcg/tcg.c index 2f09114bf9..892f640fce 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -757,31 +757,35 @@ void tcg_prologue_init(TCGContext *s) #ifdef DEBUG_DISAS if (qemu_loglevel_mask(CPU_LOG_TB_OUT_ASM)) { FILE *logfile = qemu_log_trylock(); - qemu_log("PROLOGUE: [size=%zu]\n", prologue_size); - if (s->data_gen_ptr) { - size_t code_size = s->data_gen_ptr - s->code_gen_ptr; - size_t data_size = prologue_size - code_size; - size_t i; + if (logfile) { + fprintf(logfile, "PROLOGUE: [size=%zu]\n", prologue_size); + if (s->data_gen_ptr) { + size_t code_size = s->data_gen_ptr - s->code_gen_ptr; + size_t data_size = prologue_size - code_size; + size_t i; - log_disas(s->code_gen_ptr, code_size); + disas(logfile, s->code_gen_ptr, code_size); - for (i = 0; i < data_size; i += sizeof(tcg_target_ulong)) { - if (sizeof(tcg_target_ulong) == 8) { - qemu_log("0x%08" PRIxPTR ": .quad 0x%016" PRIx64 "\n", - (uintptr_t)s->data_gen_ptr + i, - *(uint64_t *)(s->data_gen_ptr + i)); - } else { - qemu_log("0x%08" PRIxPTR ": .long 0x%08x\n", - (uintptr_t)s->data_gen_ptr + i, - *(uint32_t *)(s->data_gen_ptr + i)); + for (i = 0; i < data_size; i += sizeof(tcg_target_ulong)) { + if (sizeof(tcg_target_ulong) == 8) { + fprintf(logfile, + "0x%08" PRIxPTR ": .quad 0x%016" PRIx64 "\n", + (uintptr_t)s->data_gen_ptr + i, + *(uint64_t *)(s->data_gen_ptr + i)); + } else { + fprintf(logfile, + "0x%08" PRIxPTR ": .long 0x%08x\n", + (uintptr_t)s->data_gen_ptr + i, + *(uint32_t *)(s->data_gen_ptr + i)); + } } + } else { + disas(logfile, s->code_gen_ptr, prologue_size); } - } else { - log_disas(s->code_gen_ptr, prologue_size); + fprintf(logfile, "\n"); + qemu_log_flush(); + qemu_log_unlock(logfile); } - qemu_log("\n"); - qemu_log_flush(); - qemu_log_unlock(logfile); } #endif @@ -4201,10 +4205,12 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP) && qemu_log_in_addr_range(tb->pc))) { FILE *logfile = qemu_log_trylock(); - qemu_log("OP:\n"); - tcg_dump_ops(s, false); - qemu_log("\n"); - qemu_log_unlock(logfile); + if (logfile) { + fprintf(logfile, "OP:\n"); + tcg_dump_ops(s, false); + fprintf(logfile, "\n"); + qemu_log_unlock(logfile); + } } #endif @@ -4246,10 +4252,12 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_IND) && qemu_log_in_addr_range(tb->pc))) { FILE *logfile = qemu_log_trylock(); - qemu_log("OP before indirect lowering:\n"); - tcg_dump_ops(s, false); - qemu_log("\n"); - qemu_log_unlock(logfile); + if (logfile) { + fprintf(logfile, "OP before indirect lowering:\n"); + tcg_dump_ops(s, false); + fprintf(logfile, "\n"); + qemu_log_unlock(logfile); + } } #endif /* Replace indirect temps with direct temps. */ @@ -4267,10 +4275,12 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb) if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP_OPT) && qemu_log_in_addr_range(tb->pc))) { FILE *logfile = qemu_log_trylock(); - qemu_log("OP after optimization and liveness analysis:\n"); - tcg_dump_ops(s, true); - qemu_log("\n"); - qemu_log_unlock(logfile); + if (logfile) { + fprintf(logfile, "OP after optimization and liveness analysis:\n"); + tcg_dump_ops(s, true); + fprintf(logfile, "\n"); + qemu_log_unlock(logfile); + } } #endif -- 2.25.1