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X-Received-From: 2607:f8b0:4864:20::744 Subject: [Qemu-devel] [PATCH v4 5/7] log: adding -d tb_stats to control tbstats 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: vandersonmr Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Adding -d tb_stats:[limit:[all|jit|exec]] to control TBStatistics collection. "limit" is used to limit the number of TBStats in the linux-user dump. [all|jit|exec] control the profilling level used by the TBStats: all, only jit stats or only execution count stats. Signed-off-by: Vanderson M. do Rosario --- include/qemu/log.h | 1 + util/log.c | 34 ++++++++++++++++++++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/include/qemu/log.h b/include/qemu/log.h index 8cdfc268ca..93642603e5 100644 --- a/include/qemu/log.h +++ b/include/qemu/log.h @@ -45,6 +45,7 @@ static inline bool qemu_log_separate(void) /* LOG_TRACE (1 << 15) is defined in log-for-trace.h */ #define CPU_LOG_TB_OP_IND (1 << 16) #define CPU_LOG_TB_FPU (1 << 17) +#define CPU_LOG_TB_STATS (1 << 18) /* Lock output for a series of related logs. Since this is not needed * for a single qemu_log / qemu_log_mask / qemu_log_mask_and_addr, we diff --git a/util/log.c b/util/log.c index f81653d712..8109d19afb 100644 --- a/util/log.c +++ b/util/log.c @@ -30,6 +30,7 @@ FILE *qemu_logfile; int qemu_loglevel; static int log_append = 0; static GArray *debug_regions; +int32_t max_num_hot_tbs_to_dump; /* Return the number of characters emitted. */ int qemu_log(const char *fmt, ...) @@ -273,6 +274,8 @@ const QEMULogItem qemu_log_items[] = { { CPU_LOG_TB_NOCHAIN, "nochain", "do not chain compiled TBs so that \"exec\" and \"cpu\" show\n" "complete traces" }, + { CPU_LOG_TB_STATS, "tb_stats[:limit:(all,jit,exec)]", + "show TBs statistics (until given a limit) ordered by their hotness.\n" }, { 0, NULL, NULL }, }; @@ -294,6 +297,37 @@ int qemu_str_to_log_mask(const char *str) trace_enable_events((*tmp) + 6); mask |= LOG_TRACE; #endif + } else if (g_str_has_prefix(*tmp, "tb_stats")) { + if (g_str_has_prefix(*tmp, "tb_stats:") && (*tmp)[9] != '\0') { + + if (!g_ascii_isdigit(*((*tmp) + 9))) { + fprintf(stderr, + "should be a number follow by [all|jit|exec], as tb_stats:10:all\n"); + exit(1); + } + /* get limit */ + max_num_hot_tbs_to_dump = atoi((*tmp) + 9); + + /* get profilling level */ + char *s = (*tmp) + 9; + while (*s != '\0') { + if (*s++ == ':') { + break; + } + } + if (g_str_equal(s, "jit") == 0) { + set_default_tbstats_flag(TB_JIT_STATS); + } else if (g_str_equal(s, "exec") == 0) { + set_default_tbstats_flag(TB_EXEC_STATS); + } else { + set_default_tbstats_flag(TB_JIT_STATS | TB_EXEC_STATS); + } + } else { + set_default_tbstats_flag(TB_JIT_STATS | TB_EXEC_STATS); + } + + mask |= CPU_LOG_TB_STATS; + enable_collect_tb_stats(); } else { for (item = qemu_log_items; item->mask != 0; item++) { if (g_str_equal(*tmp, item->name)) { -- 2.22.0