From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:59043) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1erNrt-0004jl-69 for qemu-devel@nongnu.org; Thu, 01 Mar 2018 08:03:34 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1erNrs-0007jE-4A for qemu-devel@nongnu.org; Thu, 01 Mar 2018 08:03:29 -0500 From: Cornelia Huck Date: Thu, 1 Mar 2018 14:01:57 +0100 Message-Id: <20180301130201.24666-24-cohuck@redhat.com> In-Reply-To: <20180301130201.24666-1-cohuck@redhat.com> References: <20180301130201.24666-1-cohuck@redhat.com> Subject: [Qemu-devel] [PULL v2 23/27] hmp: change hmp_info_cpus to use query-cpus-fast List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: peter.maydell@linaro.org Cc: qemu-s390x@nongnu.org, qemu-devel@nongnu.org, borntraeger@de.ibm.com, rth@twiddle.net, agraf@suse.de, david@redhat.com, thuth@redhat.com, Viktor Mihajlovski , Cornelia Huck From: Viktor Mihajlovski Changing the implementation of hmp_info_cpus() to call qmp_query_cpus_fast() instead of qmp_query_cpus. This has the following consequences: o No further code change required for qmp_query_cpus deprecation o HMP profits from the less disruptive cpu information retrieval o HMP 'info cpus' won't display architecture specific data anymore, which should be tolerable in the light of the deprecation of query-cpus. In order to allow 'info cpus' to be executed completely on the fast path, monitor_get_cpu_index() has been adapted to not synchronize the cpu state. Signed-off-by: Viktor Mihajlovski Message-Id: <1518797321-28356-6-git-send-email-mihajlov@linux.vnet.ibm.com> Reviewed-by: Cornelia Huck Reviewed-by: Eric Blake Signed-off-by: Cornelia Huck --- hmp.c | 41 +++++++---------------------------------- monitor.c | 13 ++++++++++--- 2 files changed, 17 insertions(+), 37 deletions(-) diff --git a/hmp.c b/hmp.c index 7870d6a300..ae86bfbade 100644 --- a/hmp.c +++ b/hmp.c @@ -360,50 +360,23 @@ void hmp_info_migrate_cache_size(Monitor *mon, const QDict *qdict) void hmp_info_cpus(Monitor *mon, const QDict *qdict) { - CpuInfoList *cpu_list, *cpu; + CpuInfoFastList *cpu_list, *cpu; - cpu_list = qmp_query_cpus(NULL); + cpu_list = qmp_query_cpus_fast(NULL); for (cpu = cpu_list; cpu; cpu = cpu->next) { int active = ' '; - if (cpu->value->CPU == monitor_get_cpu_index()) { + if (cpu->value->cpu_index == monitor_get_cpu_index()) { active = '*'; } - monitor_printf(mon, "%c CPU #%" PRId64 ":", active, cpu->value->CPU); - - switch (cpu->value->arch) { - case CPU_INFO_ARCH_X86: - monitor_printf(mon, " pc=0x%016" PRIx64, cpu->value->u.x86.pc); - break; - case CPU_INFO_ARCH_PPC: - monitor_printf(mon, " nip=0x%016" PRIx64, cpu->value->u.ppc.nip); - break; - case CPU_INFO_ARCH_SPARC: - monitor_printf(mon, " pc=0x%016" PRIx64, - cpu->value->u.q_sparc.pc); - monitor_printf(mon, " npc=0x%016" PRIx64, - cpu->value->u.q_sparc.npc); - break; - case CPU_INFO_ARCH_MIPS: - monitor_printf(mon, " PC=0x%016" PRIx64, cpu->value->u.q_mips.PC); - break; - case CPU_INFO_ARCH_TRICORE: - monitor_printf(mon, " PC=0x%016" PRIx64, cpu->value->u.tricore.PC); - break; - default: - break; - } - - if (cpu->value->halted) { - monitor_printf(mon, " (halted)"); - } - - monitor_printf(mon, " thread_id=%" PRId64 "\n", cpu->value->thread_id); + monitor_printf(mon, "%c CPU #%" PRId64 ":", active, + cpu->value->cpu_index); + monitor_printf(mon, " thread-id=%" PRId64 "\n", cpu->value->thread_id); } - qapi_free_CpuInfoList(cpu_list); + qapi_free_CpuInfoFastList(cpu_list); } static void print_block_info(Monitor *mon, BlockInfo *info, diff --git a/monitor.c b/monitor.c index 373bb8d1c3..308a3d9b78 100644 --- a/monitor.c +++ b/monitor.c @@ -1055,7 +1055,7 @@ int monitor_set_cpu(int cpu_index) return 0; } -CPUState *mon_get_cpu(void) +static CPUState *mon_get_cpu_sync(bool synchronize) { CPUState *cpu; @@ -1074,10 +1074,17 @@ CPUState *mon_get_cpu(void) monitor_set_cpu(first_cpu->cpu_index); cpu = first_cpu; } - cpu_synchronize_state(cpu); + if (synchronize) { + cpu_synchronize_state(cpu); + } return cpu; } +CPUState *mon_get_cpu(void) +{ + return mon_get_cpu_sync(true); +} + CPUArchState *mon_get_cpu_env(void) { CPUState *cs = mon_get_cpu(); @@ -1087,7 +1094,7 @@ CPUArchState *mon_get_cpu_env(void) int monitor_get_cpu_index(void) { - CPUState *cs = mon_get_cpu(); + CPUState *cs = mon_get_cpu_sync(false); return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX; } -- 2.13.6