| /* |
| * Copyright (C) 2018, Emilio G. Cota <cota@braap.org> |
| * |
| * License: GNU GPL, version 2 or later. |
| * See the COPYING file in the top-level directory. |
| */ |
| #include <inttypes.h> |
| #include <assert.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include <stdio.h> |
| #include <glib.h> |
| |
| #include <qemu-plugin.h> |
| |
| QEMU_PLUGIN_EXPORT int qemu_plugin_version = QEMU_PLUGIN_VERSION; |
| |
| typedef struct { |
| uint64_t bb_count; |
| uint64_t insn_count; |
| } CPUCount; |
| |
| static struct qemu_plugin_scoreboard *counts; |
| static qemu_plugin_u64 bb_count; |
| static qemu_plugin_u64 insn_count; |
| |
| static bool do_inline; |
| /* Dump running CPU total on idle? */ |
| static bool idle_report; |
| |
| static void gen_one_cpu_report(CPUCount *count, GString *report, |
| unsigned int cpu_index) |
| { |
| if (count->bb_count) { |
| g_string_append_printf(report, "CPU%d: " |
| "bb's: %" PRIu64", insns: %" PRIu64 "\n", |
| cpu_index, |
| count->bb_count, count->insn_count); |
| } |
| } |
| |
| static void plugin_exit(qemu_plugin_id_t id, void *p) |
| { |
| g_autoptr(GString) report = g_string_new(""); |
| |
| for (int i = 0; i < qemu_plugin_num_vcpus(); ++i) { |
| CPUCount *count = qemu_plugin_scoreboard_find(counts, i); |
| gen_one_cpu_report(count, report, i); |
| } |
| g_string_append_printf(report, "Total: " |
| "bb's: %" PRIu64", insns: %" PRIu64 "\n", |
| qemu_plugin_u64_sum(bb_count), |
| qemu_plugin_u64_sum(insn_count)); |
| qemu_plugin_outs(report->str); |
| qemu_plugin_scoreboard_free(counts); |
| } |
| |
| static void vcpu_idle(qemu_plugin_id_t id, unsigned int cpu_index) |
| { |
| CPUCount *count = qemu_plugin_scoreboard_find(counts, cpu_index); |
| g_autoptr(GString) report = g_string_new(""); |
| gen_one_cpu_report(count, report, cpu_index); |
| |
| if (report->len > 0) { |
| g_string_prepend(report, "Idling "); |
| qemu_plugin_outs(report->str); |
| } |
| } |
| |
| static void vcpu_tb_exec(unsigned int cpu_index, void *udata) |
| { |
| CPUCount *count = qemu_plugin_scoreboard_find(counts, cpu_index); |
| |
| uintptr_t n_insns = (uintptr_t)udata; |
| count->insn_count += n_insns; |
| count->bb_count++; |
| } |
| |
| static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) |
| { |
| size_t n_insns = qemu_plugin_tb_n_insns(tb); |
| |
| if (do_inline) { |
| qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu( |
| tb, QEMU_PLUGIN_INLINE_ADD_U64, bb_count, 1); |
| qemu_plugin_register_vcpu_tb_exec_inline_per_vcpu( |
| tb, QEMU_PLUGIN_INLINE_ADD_U64, insn_count, n_insns); |
| } else { |
| qemu_plugin_register_vcpu_tb_exec_cb(tb, vcpu_tb_exec, |
| QEMU_PLUGIN_CB_NO_REGS, |
| (void *)n_insns); |
| } |
| } |
| |
| QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, |
| const qemu_info_t *info, |
| int argc, char **argv) |
| { |
| int i; |
| |
| for (i = 0; i < argc; i++) { |
| char *opt = argv[i]; |
| g_auto(GStrv) tokens = g_strsplit(opt, "=", 2); |
| if (g_strcmp0(tokens[0], "inline") == 0) { |
| if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) { |
| fprintf(stderr, "boolean argument parsing failed: %s\n", opt); |
| return -1; |
| } |
| } else if (g_strcmp0(tokens[0], "idle") == 0) { |
| if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &idle_report)) { |
| fprintf(stderr, "boolean argument parsing failed: %s\n", opt); |
| return -1; |
| } |
| } else { |
| fprintf(stderr, "option parsing failed: %s\n", opt); |
| return -1; |
| } |
| } |
| |
| counts = qemu_plugin_scoreboard_new(sizeof(CPUCount)); |
| bb_count = qemu_plugin_scoreboard_u64_in_struct(counts, CPUCount, bb_count); |
| insn_count = qemu_plugin_scoreboard_u64_in_struct( |
| counts, CPUCount, insn_count); |
| |
| if (idle_report) { |
| qemu_plugin_register_vcpu_idle_cb(id, vcpu_idle); |
| } |
| |
| qemu_plugin_register_vcpu_tb_trans_cb(id, vcpu_tb_trans); |
| qemu_plugin_register_atexit_cb(id, plugin_exit, NULL); |
| return 0; |
| } |