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d="scan'208";a="3787823" From: Anthony PERARD To: Date: Fri, 2 Aug 2019 16:36:03 +0100 Message-ID: <20190802153606.32061-33-anthony.perard@citrix.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802153606.32061-1-anthony.perard@citrix.com> References: <20190802153606.32061-1-anthony.perard@citrix.com> MIME-Version: 1.0 Subject: [Xen-devel] [PATCH 32/35] libxl: Use ev_qmp in libxl_set_vcpuonline X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Anthony PERARD , Ian Jackson , Wei Liu Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Removed libxl__qmp_cpu_add since it's not used anymore. `cpumap' arg of libxl__set_vcpuonline_xenstore is constified. Signed-off-by: Anthony PERARD Acked-by: Ian Jackson --- tools/libxl/libxl_domain.c | 205 ++++++++++++++++++++++++++--------- tools/libxl/libxl_internal.h | 2 - tools/libxl/libxl_qmp.c | 9 -- 3 files changed, 153 insertions(+), 63 deletions(-) diff --git a/tools/libxl/libxl_domain.c b/tools/libxl/libxl_domain.c index 08d3fc9fbc..4726e27d20 100644 --- a/tools/libxl/libxl_domain.c +++ b/tools/libxl/libxl_domain.c @@ -1432,8 +1432,8 @@ libxl_vcpuinfo *libxl_list_vcpu(libxl_ctx *ctx, uint3= 2_t domid, } =20 static int libxl__set_vcpuonline_xenstore(libxl__gc *gc, uint32_t domid, - libxl_bitmap *cpumap, - const libxl_dominfo *info) + const libxl_bitmap *cpumap, + const libxl_dominfo *info) { char *dompath; xs_transaction_t t; @@ -1457,43 +1457,27 @@ static int libxl__set_vcpuonline_xenstore(libxl__gc= *gc, uint32_t domid, return rc; } =20 -static int libxl__set_vcpuonline_qmp(libxl__gc *gc, uint32_t domid, - libxl_bitmap *cpumap, - const libxl_dominfo *info) -{ - int i, rc; - libxl_bitmap current_map, final_map; - - libxl_bitmap_init(¤t_map); - libxl_bitmap_init(&final_map); - - libxl_bitmap_alloc(CTX, ¤t_map, info->vcpu_max_id + 1); - libxl_bitmap_set_none(¤t_map); - rc =3D libxl__qmp_query_cpus(gc, domid, ¤t_map); - if (rc) { - LOGD(ERROR, domid, "Failed to query cpus"); - goto out; - } - - libxl_bitmap_copy_alloc(CTX, &final_map, cpumap); - - libxl_for_each_set_bit(i, current_map) - libxl_bitmap_reset(&final_map, i); - - libxl_for_each_set_bit(i, final_map) { - rc =3D libxl__qmp_cpu_add(gc, domid, i); - if (rc) { - LOGD(ERROR, domid, "Failed to add cpu %d", i); - goto out; - } - } - - rc =3D 0; -out: - libxl_bitmap_dispose(¤t_map); - libxl_bitmap_dispose(&final_map); - return rc; -} +typedef struct set_vcpuonline_state { + libxl__ev_qmp qmp; + libxl__ev_time timeout; + const libxl_bitmap *cpumap; + libxl_dominfo info; + libxl_bitmap final_map; + int index; /* for loop on final_map */ +} set_vcpuonline_state; + +static void set_vcpuonline_qmp_cpus_queried(libxl__egc *, libxl__ev_qmp *, + const libxl__json_object *, + int rc); +static void set_vcpuonline_qmp_add_cpu(libxl__egc *, libxl__ev_qmp *, + const libxl__json_object *response, + int rc); +static void set_vcpuonline_timeout(libxl__egc *egc, libxl__ev_time *ev, + const struct timeval *requested_abs, + int rc); +static void set_vcpuonline_done(libxl__egc *egc, + set_vcpuonline_state *svos, + int rc); =20 int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t domid, libxl_bitmap *cpumap, @@ -1501,11 +1485,22 @@ int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t d= omid, { AO_CREATE(ctx, domid, ao_how); int rc, maxcpus; - libxl_dominfo info; + set_vcpuonline_state *svos; =20 - libxl_dominfo_init(&info); + GCNEW(svos); + libxl__ev_qmp_init(&svos->qmp); + svos->qmp.ao =3D ao; + svos->qmp.domid =3D domid; + svos->qmp.payload_fd =3D -1; + libxl__ev_time_init(&svos->timeout); + libxl_dominfo_init(&svos->info); + libxl_bitmap_init(&svos->final_map); =20 - rc =3D libxl_domain_info(CTX, &info, domid); + /* Convenience aliases */ + libxl_dominfo *info =3D &svos->info; + libxl__ev_qmp *qmp =3D &svos->qmp; + + rc =3D libxl_domain_info(CTX, info, domid); if (rc < 0) { LOGED(ERROR, domid, "Getting domain info list"); goto out; @@ -1518,10 +1513,10 @@ int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t d= omid, rc =3D ERROR_FAIL; goto out; } - if (maxcpus > info.vcpu_max_id + 1) + if (maxcpus > info->vcpu_max_id + 1) { LOGED(ERROR, domid, "Requested %d VCPUs, however maxcpus is %d!", - maxcpus, info.vcpu_max_id + 1); + maxcpus, info->vcpu_max_id + 1); rc =3D ERROR_FAIL; goto out; } @@ -1532,8 +1527,14 @@ int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t do= mid, case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN_TRADITIONAL: break; case LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN: - rc =3D libxl__set_vcpuonline_qmp(gc, domid, cpumap, &info); - break; + rc =3D libxl__ev_time_register_rel(ao, &svos->timeout, + set_vcpuonline_timeout, + LIBXL_QMP_CMD_TIMEOUT * 1000); + if (rc) goto out; + qmp->callback =3D set_vcpuonline_qmp_cpus_queried; + rc =3D libxl__ev_qmp_send(gc, qmp, "query-cpus", NULL); + if (rc) goto out; + return AO_INPROGRESS; default: rc =3D ERROR_INVAL; } @@ -1545,15 +1546,115 @@ int libxl_set_vcpuonline(libxl_ctx *ctx, uint32_t = domid, rc =3D ERROR_INVAL; } =20 - if (!rc) - rc =3D libxl__set_vcpuonline_xenstore(gc, domid, cpumap, &info); +out: + set_vcpuonline_done(egc, svos, rc); /* must be last */ + return AO_INPROGRESS; +} + +static void set_vcpuonline_qmp_cpus_queried(libxl__egc *egc, + libxl__ev_qmp *qmp, const libxl__json_object *response, int rc) +{ + EGC_GC; + set_vcpuonline_state *svos =3D CONTAINER_OF(qmp, *svos, qmp); + const libxl__json_object *cpu; + int i; + libxl_bitmap current_map; + + /* Convenience aliases */ + libxl_bitmap *final_map =3D &svos->final_map; + + libxl_bitmap_init(¤t_map); + + if (rc) goto out; + + libxl_bitmap_alloc(CTX, ¤t_map, svos->info.vcpu_max_id + 1); + libxl_bitmap_set_none(¤t_map); + + for (i =3D 0; (cpu =3D libxl__json_array_get(response, i)); i++) { + unsigned int cpu_index; + const libxl__json_object *o; + + o =3D libxl__json_map_get("CPU", cpu, JSON_INTEGER); + if (!o) { + LOGD(ERROR, qmp->domid, "Failed to retrieve CPU index."); + rc =3D ERROR_QEMU_API; + goto out; + } + + cpu_index =3D libxl__json_object_get_integer(o); + libxl_bitmap_set(¤t_map, cpu_index); + } + + + libxl_bitmap_copy_alloc(CTX, final_map, svos->cpumap); + + libxl_for_each_set_bit(i, current_map) { + libxl_bitmap_reset(final_map, i); + } =20 out: - libxl_dominfo_dispose(&info); - if (rc) - return AO_CREATE_FAIL(rc); + libxl_bitmap_dispose(¤t_map); + svos->index =3D -1; + set_vcpuonline_qmp_add_cpu(egc, qmp, NULL, rc); /* must be last */ +} + +static void set_vcpuonline_qmp_add_cpu(libxl__egc *egc, + libxl__ev_qmp *qmp, const libxl__json_object *response, int rc) +{ + STATE_AO_GC(qmp->ao); + set_vcpuonline_state *svos =3D CONTAINER_OF(qmp, *svos, qmp); + libxl__json_object *args =3D NULL; + + /* Convenience aliases */ + libxl_bitmap *map =3D &svos->final_map; + + if (rc) goto out; + + while (libxl_bitmap_cpu_valid(map, ++svos->index)) { + if (libxl_bitmap_test(map, svos->index)) { + qmp->callback =3D set_vcpuonline_qmp_add_cpu; + libxl__qmp_param_add_integer(gc, &args, "id", svos->index); + rc =3D libxl__ev_qmp_send(gc, qmp, "cpu-add", args); + if (rc) goto out; + return; + } + } + +out: + set_vcpuonline_done(egc, svos, rc); +} + +static void set_vcpuonline_timeout(libxl__egc *egc, libxl__ev_time *ev, + const struct timeval *requested_abs, + int rc) +{ + EGC_GC; + set_vcpuonline_state *svos =3D CONTAINER_OF(ev, *svos, timeout); + + if (rc =3D=3D ERROR_TIMEDOUT) + LOGD(ERROR, svos->qmp.domid, + "Setting CPU online in QEMU timed out"); + + set_vcpuonline_done(egc, svos, rc); +} + +static void set_vcpuonline_done(libxl__egc *egc, + set_vcpuonline_state *svos, + int rc) +{ + STATE_AO_GC(svos->qmp.ao); + + /* Convenience aliases */ + libxl_domid domid =3D svos->qmp.domid; + + if (!rc) + rc =3D libxl__set_vcpuonline_xenstore(gc, domid, svos->cpumap, + &svos->info); + + libxl_bitmap_dispose(&svos->final_map); + libxl_dominfo_dispose(&svos->info); + libxl__ev_qmp_dispose(gc, &svos->qmp); libxl__ao_complete(egc, ao, rc); - return AO_INPROGRESS; } =20 static void domain_s3_resume_done(libxl__egc *egc, libxl__ev_qmp *qmp, diff --git a/tools/libxl/libxl_internal.h b/tools/libxl/libxl_internal.h index c6b9655af2..03e99b23f5 100644 --- a/tools/libxl/libxl_internal.h +++ b/tools/libxl/libxl_internal.h @@ -1987,8 +1987,6 @@ _hidden libxl__qmp_handler *libxl__qmp_initialize(lib= xl__gc *gc, _hidden int libxl__qmp_resume(libxl__gc *gc, int domid); /* Load current QEMU state from file. */ _hidden int libxl__qmp_restore(libxl__gc *gc, int domid, const char *filen= ame); -/* Add a virtual CPU */ -_hidden int libxl__qmp_cpu_add(libxl__gc *gc, int domid, int index); /* Query the bitmap of CPUs */ _hidden int libxl__qmp_query_cpus(libxl__gc *gc, int domid, libxl_bitmap *map); diff --git a/tools/libxl/libxl_qmp.c b/tools/libxl/libxl_qmp.c index 40043a0a45..27183bc6c4 100644 --- a/tools/libxl/libxl_qmp.c +++ b/tools/libxl/libxl_qmp.c @@ -767,15 +767,6 @@ int libxl__qmp_resume(libxl__gc *gc, int domid) return qmp_run_command(gc, domid, "cont", NULL, NULL, NULL); } =20 -int libxl__qmp_cpu_add(libxl__gc *gc, int domid, int idx) -{ - libxl__json_object *args =3D NULL; - - libxl__qmp_param_add_integer(gc, &args, "id", idx); - - return qmp_run_command(gc, domid, "cpu-add", args, NULL, NULL); -} - static int query_cpus_callback(libxl__qmp_handler *qmp, const libxl__json_object *response, void *opaque) --=20 Anthony PERARD _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel