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Date: Fri, 22 Oct 2010 11:25:35 +0900 From: Masami Hiramatsu <masami.hiramatsu.pt@...achi.com> To: Arnaldo Carvalho de Melo <acme@...hat.com> Cc: Ingo Molnar <mingo@...e.hu>, Steven Rostedt <rostedt@...dmis.org>, Srikar Dronamraju <srikar@...ux.vnet.ibm.com>, linux-kernel@...r.kernel.org, 2nddept-manager@....hitachi.co.jp, Peter Zijlstra <a.p.zijlstra@...llo.nl>, Paul Mackerras <paulus@...ba.org>, Frederic Weisbecker <fweisbec@...il.com> Subject: Re: [PATCH -tip 6/7] perf probe: Show accessible global variables (2010/10/22 5:50), Arnaldo Carvalho de Melo wrote: > Em Thu, Oct 21, 2010 at 07:13:35PM +0900, Masami Hiramatsu escreveu: >> Add --externs for allowing --vars to show accessible >> global(externally defined) variables from a given probe >> point too. >> This will give you a hint which globals can be accessible >> from the probe point. > > Cool, but perhaps we need to filter out some of the globals? Things > like: Hmm, yeah. So is that enough to filter out symbols which start with __k???tab_ and __crc_ ? > > long unsigned int __kcrctab_tcp_hashinfo > long unsigned int __kcrctab_tcp_proc_register > long unsigned int __kcrctab_tcp_proc_unregister > long unsigned int __kcrctab_tcp_prot > > If --verbose is specified we could then show everything. --verbose is already used for showing debug messages, ;) so how about using --all/--allextras? Or, perhaps we can add more generic filtering for listing events/vars/funcs. Thank you, > > So that it doesn't get this long: > > [root@...lia ~]# perf probe -V tcp_v4_do_rcv:28 --externs > Available variables at tcp_v4_do_rcv:28 > @<tcp_v4_do_rcv+390> > (function_type)* ip_nat_decode_session > (unknown_type) __crc_ipv4_specific > (unknown_type) __crc_sysctl_tcp_low_latency > (unknown_type) __crc_tcp4_gro_complete > (unknown_type) __crc_tcp4_gro_receive > (unknown_type) __crc_tcp_hashinfo > (unknown_type) __crc_tcp_proc_register > (unknown_type) __crc_tcp_proc_unregister > (unknown_type) __crc_tcp_prot > (unknown_type) __crc_tcp_twsk_unique > (unknown_type) __crc_tcp_v4_conn_request > (unknown_type) __crc_tcp_v4_connect > (unknown_type) __crc_tcp_v4_destroy_sock > (unknown_type) __crc_tcp_v4_do_rcv > (unknown_type) __crc_tcp_v4_md5_do_add > (unknown_type) __crc_tcp_v4_md5_do_del > (unknown_type) __crc_tcp_v4_md5_hash_skb > (unknown_type) __crc_tcp_v4_md5_lookup > (unknown_type) __crc_tcp_v4_remember_stamp > (unknown_type) __crc_tcp_v4_send_check > (unknown_type) __crc_tcp_v4_syn_recv_sock > __u8* ip_tos2prio > atomic_long_t* vm_stat > atomic_t tcp_memory_allocated > bool c1e_detected > char __pcpu_scope_cpu_core_map > char __pcpu_scope_cpu_info > char __pcpu_scope_cpu_llc_id > char __pcpu_scope_cpu_number > char __pcpu_scope_cpu_sibling_map > char __pcpu_scope_current_task > char __pcpu_scope_init_tss > char __pcpu_scope_irq_count > char __pcpu_scope_irq_regs > char __pcpu_scope_irq_stack_ptr > char __pcpu_scope_irq_stack_union > char __pcpu_scope_irq_stat > char __pcpu_scope_kernel_stack > char __pcpu_scope_numa_node > char __pcpu_scope_orig_ist > char __pcpu_scope_process_counts > char __pcpu_scope_softirq_work_list > char __pcpu_scope_softnet_data > char __pcpu_scope_this_cpu_off > char __pcpu_scope_tick_cpu_device > char __pcpu_scope_vector_irq > char __pcpu_scope_vm_event_states > char __pcpu_scope_x2apic_extra_bits > char __pcpu_scope_x86_bios_cpu_apicid > char __pcpu_scope_x86_cpu_to_apicid > char __pcpu_scope_x86_cpu_to_node_map > char* __kstrtab_ipv4_specific > char* __kstrtab_sysctl_tcp_low_latency > char* __kstrtab_tcp4_gro_complete > char* __kstrtab_tcp4_gro_receive > char* __kstrtab_tcp_hashinfo > char* __kstrtab_tcp_proc_register > char* __kstrtab_tcp_proc_unregister > char* __kstrtab_tcp_prot > char* __kstrtab_tcp_twsk_unique > char* __kstrtab_tcp_v4_conn_request > char* __kstrtab_tcp_v4_connect > char* __kstrtab_tcp_v4_destroy_sock > char* __kstrtab_tcp_v4_do_rcv > char* __kstrtab_tcp_v4_md5_do_add > char* __kstrtab_tcp_v4_md5_do_del > char* __kstrtab_tcp_v4_md5_hash_skb > char* __kstrtab_tcp_v4_md5_lookup > char* __kstrtab_tcp_v4_remember_stamp > char* __kstrtab_tcp_v4_send_check > char* __kstrtab_tcp_v4_syn_recv_sock > char* hex_asc > char* inet_csk_timer_bug_msg > cpumask_var_t cpu_callout_mask > cpumask_var_t cpu_core_map > cpumask_var_t cpu_sibling_map > cpumask_var_t* node_to_cpumask_map > int acpi_disabled > int acpi_noirq > int acpi_pci_disabled > int audit_enabled > int cpu_number > int debug_locks > int disable_apic > int net_msg_warn > int nr_cpu_ids > int nr_online_nodes > int numa_node > int page_group_by_mobility_disabled > int percpu_counter_batch > int prof_on > int sched_mc_power_savings > int sched_smt_power_savings > int smp_found_config > int sysctl_max_syn_backlog > int sysctl_tcp_adv_win_scale > int sysctl_tcp_cookie_size > int sysctl_tcp_ecn > int sysctl_tcp_fin_timeout > int sysctl_tcp_keepalive_intvl > int sysctl_tcp_keepalive_probes > int sysctl_tcp_keepalive_time > int sysctl_tcp_low_latency > int sysctl_tcp_max_orphans > int sysctl_tcp_reordering > int sysctl_tcp_syncookies > int sysctl_tcp_tw_reuse > int tcp_memory_pressure > int time_status > int timer_stats_active > int x2apic_phys > int x86_cpu_to_node_map > int* console_printk > int* sysctl_tcp_mem > int* sysctl_tcp_rmem > int* sysctl_tcp_wmem > int* x86_cpu_to_node_map_early_ptr > irq_cpustat_t irq_stat > long unsigned int __kcrctab_ipv4_specific > long unsigned int __kcrctab_sysctl_tcp_low_latency > long unsigned int __kcrctab_tcp4_gro_complete > long unsigned int __kcrctab_tcp4_gro_receive > long unsigned int __kcrctab_tcp_hashinfo > long unsigned int __kcrctab_tcp_proc_register > long unsigned int __kcrctab_tcp_proc_unregister > long unsigned int __kcrctab_tcp_prot > long unsigned int __kcrctab_tcp_twsk_unique > long unsigned int __kcrctab_tcp_v4_conn_request > long unsigned int __kcrctab_tcp_v4_connect > long unsigned int __kcrctab_tcp_v4_destroy_sock > long unsigned int __kcrctab_tcp_v4_do_rcv > long unsigned int __kcrctab_tcp_v4_md5_do_add > long unsigned int __kcrctab_tcp_v4_md5_do_del > long unsigned int __kcrctab_tcp_v4_md5_hash_skb > long unsigned int __kcrctab_tcp_v4_md5_lookup > long unsigned int __kcrctab_tcp_v4_remember_stamp > long unsigned int __kcrctab_tcp_v4_send_check > long unsigned int __kcrctab_tcp_v4_syn_recv_sock > long unsigned int jiffies > long unsigned int kernel_stack > long unsigned int mmap_min_addr > long unsigned int mmu_cr4_features > long unsigned int* __per_cpu_offset > long unsigned int* cpu_bit_bitmap > long unsigned int* sysctl_local_reserved_ports > nodemask_t* node_states > pg_data_t** node_data > physid_mask_t phys_cpu_present_map > pteval_t __supported_pte_mask > spinlock_t dcache_lock > struct address_space swapper_space > struct apic* apic > struct cache_sizes* malloc_sizes > struct cpuinfo_x86 boot_cpu_data > struct cpuinfo_x86 cpu_info > struct cpumask* cpu_online_mask > struct cpumask* cpu_possible_mask > struct cpumask* cpu_present_mask > struct device x86_dma_fallback_dev > struct dma_map_ops* dma_ops > struct dqstats dqstats > struct icmp_err* icmp_err_convert > struct inet_connection_sock_af_ops ipv4_specific > struct inet_hashinfo tcp_hashinfo > struct inet_timewait_death_row tcp_death_row > struct kernel_symbol __ksymtab_ipv4_specific > struct kernel_symbol __ksymtab_sysctl_tcp_low_latency > struct kernel_symbol __ksymtab_tcp4_gro_complete > struct kernel_symbol __ksymtab_tcp4_gro_receive > struct kernel_symbol __ksymtab_tcp_hashinfo > struct kernel_symbol __ksymtab_tcp_proc_register > struct kernel_symbol __ksymtab_tcp_proc_unregister > struct kernel_symbol __ksymtab_tcp_prot > struct kernel_symbol __ksymtab_tcp_twsk_unique > struct kernel_symbol __ksymtab_tcp_v4_conn_request > struct kernel_symbol __ksymtab_tcp_v4_connect > struct kernel_symbol __ksymtab_tcp_v4_destroy_sock > struct kernel_symbol __ksymtab_tcp_v4_do_rcv > struct kernel_symbol __ksymtab_tcp_v4_md5_do_add > struct kernel_symbol __ksymtab_tcp_v4_md5_do_del > struct kernel_symbol __ksymtab_tcp_v4_md5_hash_skb > struct kernel_symbol __ksymtab_tcp_v4_md5_lookup > struct kernel_symbol __ksymtab_tcp_v4_remember_stamp > struct kernel_symbol __ksymtab_tcp_v4_send_check > struct kernel_symbol __ksymtab_tcp_v4_syn_recv_sock > struct list_head* nf_hooks > struct mem_section** mem_section > struct memnode memnode > struct neigh_table nd_tbl > struct nf_afinfo** nf_afinfo > struct percpu_counter tcp_orphan_count > struct percpu_counter tcp_sockets_allocated > struct pernet_operations tcp4_net_ops > struct pernet_operations tcp_sk_ops > struct pglist_data** node_data > struct pid* cad_pid > struct pid_namespace init_pid_ns > struct proto tcp_prot > struct pt_regs* irq_regs > struct pv_apic_ops pv_apic_ops > struct pv_cpu_ops pv_cpu_ops > struct pv_info pv_info > struct pv_irq_ops pv_irq_ops > struct pv_mmu_ops pv_mmu_ops > struct pv_time_ops pv_time_ops > struct request_sock_ops tcp_request_sock_ops > struct resource ioport_resource > struct rps_sock_flow_table* rps_sock_flow_table > struct sk_buff* skb > struct smp_ops smp_ops > struct sock* sk > struct task_struct* current_task > struct tcp_congestion_ops tcp_init_congestion_ops > struct tcp_request_sock_ops tcp_request_sock_ipv4_ops > struct tcp_seq_afinfo tcp4_seq_afinfo > struct tcp_sock_af_ops tcp_sock_ipv4_specific > struct timewait_sock_ops tcp_timewait_sock_ops > struct tracepoint __tracepoint_irq_handler_entry > struct tracepoint __tracepoint_irq_handler_exit > struct tracepoint __tracepoint_kfree > struct tracepoint __tracepoint_kmalloc > struct tracepoint __tracepoint_kmalloc_node > struct tracepoint __tracepoint_kmem_cache_alloc > struct tracepoint __tracepoint_kmem_cache_alloc_node > struct tracepoint __tracepoint_kmem_cache_free > struct tracepoint __tracepoint_mm_page_alloc > struct tracepoint __tracepoint_mm_page_alloc_extfrag > struct tracepoint __tracepoint_mm_page_alloc_zone_locked > struct tracepoint __tracepoint_mm_page_free_direct > struct tracepoint __tracepoint_mm_page_pcpu_drain > struct tracepoint __tracepoint_mm_pagevec_free > struct tracepoint __tracepoint_module_free > struct tracepoint __tracepoint_module_get > struct tracepoint __tracepoint_module_load > struct tracepoint __tracepoint_module_put > struct tracepoint __tracepoint_module_request > struct tracepoint __tracepoint_softirq_entry > struct tracepoint __tracepoint_softirq_exit > struct tracepoint __tracepoint_softirq_raise > struct vm_event_state vm_event_states > struct x86_init_ops x86_init > struct x86_platform_ops x86_platform > u16 x86_bios_cpu_apicid > u32 inet_ehash_secret > union irq_stack_union irq_stack_union > unsigned int apic_verbosity > unsigned int sysctl_timer_migration > > - Arnaldo > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@...r.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- Masami HIRAMATSU 2nd Dept. Linux Technology Center Hitachi, Ltd., Systems Development Laboratory E-mail: masami.hiramatsu.pt@...achi.com -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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