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Wed, 06 Mar 2024 06:49:00 -0800 (PST) From: =?UTF-8?q?Alex=20Benn=C3=A9e?= To: qemu-devel@nongnu.org Cc: Pierrick Bouvier , Luc Michel , =?UTF-8?q?Alex=20Benn=C3=A9e?= , Alexandre Iooss , Mahmoud Mandour Subject: [PULL 20/29] tests/plugin/insn: migrate to new per_vcpu API Date: Wed, 6 Mar 2024 14:40:32 +0000 Message-Id: <20240306144041.3787188-21-alex.bennee@linaro.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240306144041.3787188-1-alex.bennee@linaro.org> References: <20240306144041.3787188-1-alex.bennee@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::334; envelope-from=alex.bennee@linaro.org; helo=mail-wm1-x334.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1709736588217100001 From: Pierrick Bouvier Reviewed-by: Luc Michel Signed-off-by: Pierrick Bouvier Message-Id: <20240304130036.124418-8-pierrick.bouvier@linaro.org> Signed-off-by: Alex Benn=C3=A9e Message-Id: <20240305121005.3528075-21-alex.bennee@linaro.org> diff --git a/tests/plugin/insn.c b/tests/plugin/insn.c index 54da06fcf26..5e0aa03223e 100644 --- a/tests/plugin/insn.c +++ b/tests/plugin/insn.c @@ -16,25 +16,21 @@ =20 QEMU_PLUGIN_EXPORT int qemu_plugin_version =3D QEMU_PLUGIN_VERSION; =20 -#define MAX_CPUS 8 /* lets not go nuts */ - -typedef struct { - uint64_t insn_count; -} InstructionCount; - -static InstructionCount counts[MAX_CPUS]; -static uint64_t inline_insn_count; +static qemu_plugin_u64 insn_count; =20 static bool do_inline; static bool do_size; static GArray *sizes; =20 +typedef struct { + uint64_t hits; + uint64_t last_hit; + uint64_t total_delta; +} MatchCount; + typedef struct { char *match_string; - uint64_t hits[MAX_CPUS]; - uint64_t last_hit[MAX_CPUS]; - uint64_t total_delta[MAX_CPUS]; - GPtrArray *history[MAX_CPUS]; + struct qemu_plugin_scoreboard *counts; /* MatchCount */ } Match; =20 static GArray *matches; @@ -67,41 +63,40 @@ static void vcpu_init(qemu_plugin_id_t id, unsigned int= vcpu_index) =20 static void vcpu_insn_exec_before(unsigned int cpu_index, void *udata) { - unsigned int i =3D cpu_index % MAX_CPUS; - InstructionCount *c =3D &counts[i]; - - c->insn_count++; + qemu_plugin_u64_add(insn_count, cpu_index, 1); } =20 static void vcpu_insn_matched_exec_before(unsigned int cpu_index, void *ud= ata) { - unsigned int i =3D cpu_index % MAX_CPUS; Instruction *insn =3D (Instruction *) udata; - Match *match =3D insn->match; + Match *insn_match =3D insn->match; + MatchCount *match =3D qemu_plugin_scoreboard_find(insn_match->counts, + cpu_index); + g_autoptr(GString) ts =3D g_string_new(""); =20 insn->hits++; g_string_append_printf(ts, "0x%" PRIx64 ", '%s', %"PRId64 " hits", insn->vaddr, insn->disas, insn->hits); =20 - uint64_t icount =3D counts[i].insn_count; - uint64_t delta =3D icount - match->last_hit[i]; + uint64_t icount =3D qemu_plugin_u64_get(insn_count, cpu_index); + uint64_t delta =3D icount - match->last_hit; =20 - match->hits[i]++; - match->total_delta[i] +=3D delta; + match->hits++; + match->total_delta +=3D delta; =20 g_string_append_printf(ts, - ", %"PRId64" match hits, " - "=CE=94+%"PRId64 " since last match," + " , cpu %u," + " %"PRId64" match hits," + " =CE=94+%"PRId64 " since last match," " %"PRId64 " avg insns/match\n", - match->hits[i], delta, - match->total_delta[i] / match->hits[i]); + cpu_index, + match->hits, delta, + match->total_delta / match->hits); =20 - match->last_hit[i] =3D icount; + match->last_hit =3D icount; =20 qemu_plugin_outs(ts->str); - - g_ptr_array_add(match->history[i], insn); } =20 static void vcpu_tb_trans(qemu_plugin_id_t id, struct qemu_plugin_tb *tb) @@ -113,8 +108,8 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct q= emu_plugin_tb *tb) struct qemu_plugin_insn *insn =3D qemu_plugin_tb_get_insn(tb, i); =20 if (do_inline) { - qemu_plugin_register_vcpu_insn_exec_inline( - insn, QEMU_PLUGIN_INLINE_ADD_U64, &inline_insn_count, 1); + qemu_plugin_register_vcpu_insn_exec_inline_per_vcpu( + insn, QEMU_PLUGIN_INLINE_ADD_U64, insn_count, 1); } else { uint64_t vaddr =3D qemu_plugin_insn_vaddr(insn); qemu_plugin_register_vcpu_insn_exec_cb( @@ -136,10 +131,9 @@ static void vcpu_tb_trans(qemu_plugin_id_t id, struct = qemu_plugin_tb *tb) * information about the instruction which we also need to * save if there is a hit. */ - if (matches) { + if (matches->len) { char *insn_disas =3D qemu_plugin_insn_disas(insn); - int j; - for (j =3D 0; j < matches->len; j++) { + for (int j =3D 0; j < matches->len; j++) { Match *m =3D &g_array_index(matches, Match, j); if (g_str_has_prefix(insn_disas, m->match_string)) { Instruction *rec =3D g_new0(Instruction, 1); @@ -169,36 +163,33 @@ static void plugin_exit(qemu_plugin_id_t id, void *p) "len %d bytes: %ld insns\n", i, *cn= t); } } - } else if (do_inline) { - g_string_append_printf(out, "insns: %" PRIu64 "\n", inline_insn_co= unt); } else { - uint64_t total_insns =3D 0; - for (i =3D 0; i < MAX_CPUS; i++) { - InstructionCount *c =3D &counts[i]; - if (c->insn_count) { - g_string_append_printf(out, "cpu %d insns: %" PRIu64 "\n", - i, c->insn_count); - total_insns +=3D c->insn_count; - } + for (i =3D 0; i < qemu_plugin_num_vcpus(); i++) { + g_string_append_printf(out, "cpu %d insns: %" PRIu64 "\n", + i, qemu_plugin_u64_get(insn_count, i)); } g_string_append_printf(out, "total insns: %" PRIu64 "\n", - total_insns); + qemu_plugin_u64_sum(insn_count)); } qemu_plugin_outs(out->str); + + qemu_plugin_scoreboard_free(insn_count.score); + for (i =3D 0; i < matches->len; ++i) { + Match *m =3D &g_array_index(matches, Match, i); + g_free(m->match_string); + qemu_plugin_scoreboard_free(m->counts); + } + g_array_free(matches, TRUE); + g_array_free(sizes, TRUE); } =20 =20 /* Add a match to the array of matches */ static void parse_match(char *match) { - Match new_match =3D { .match_string =3D match }; - int i; - for (i =3D 0; i < MAX_CPUS; i++) { - new_match.history[i] =3D g_ptr_array_new(); - } - if (!matches) { - matches =3D g_array_new(false, true, sizeof(Match)); - } + Match new_match =3D { + .match_string =3D g_strdup(match), + .counts =3D qemu_plugin_scoreboard_new(sizeof(MatchCount)) }; g_array_append_val(matches, new_match); } =20 @@ -206,6 +197,10 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin= _id_t id, const qemu_info_t *info, int argc, char **argv) { + matches =3D g_array_new(false, true, sizeof(Match)); + /* null terminated so 0 is not a special case */ + sizes =3D g_array_new(true, true, sizeof(unsigned long)); + for (int i =3D 0; i < argc; i++) { char *opt =3D argv[i]; g_auto(GStrv) tokens =3D g_strsplit(opt, "=3D", 2); @@ -227,9 +222,8 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_= id_t id, } } =20 - if (do_size) { - sizes =3D g_array_new(true, true, sizeof(unsigned long)); - } + insn_count =3D qemu_plugin_scoreboard_u64( + qemu_plugin_scoreboard_new(sizeof(uint64_t))); =20 /* Register init, translation block and exit callbacks */ qemu_plugin_register_vcpu_init_cb(id, vcpu_init); --=20 2.39.2