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Date: Fri, 3 Nov 2006 16:07:30 -0300 From: Arnaldo Carvalho de Melo <acme@...driva.com> To: Andrew Morton <akpm@...l.org> Cc: linux-kernel@...r.kernel.org, lwn@....net Subject: Re: [ANNOUNCE] pahole and other DWARF2 utilities On Mon, Oct 30, 2006 at 08:33:34PM -0800, Andrew Morton wrote: > On Mon, 30 Oct 2006 18:33:19 -0300 > Arnaldo Carvalho de Melo <acme@...driva.com> wrote: > > > Further ideas on how to use the DWARF2 information include tools > > that will show where inlines are being used, how much code is added by > > inline functions, > > It would be quite useful to be able to identify inlined functions which are > good candidates for uninlining. Top 50 inline functions expanded more than once by sum of its expansions in a vmlinux file built for qemu, most things are modules, columns are (inline function name, number of times it was expanded, sum in bytes of its expansions, number of source files where expansions ocurred): [acme@...toy guinea_pig-2.6]$ pfunct --total_inline_stats ../../acme/OUTPUT/qemu/net-2.6/vmlinux | grep -v ': 1 ' | sort -k3 -nr | head -50 get_current 676 5732 155 xfrm_selector_match 6 4778 2 __memcpy 177 4326 89 kmalloc 185 3991 119 __constant_c_memset 113 3556 69 __constant_c_and_count_memset 225 3161 156 prefetch 333 2915 101 __ext3_journal_dirty_metadata 44 2810 6 skb_put 34 2650 27 module_put 80 2613 42 strcmp 108 2506 49 __ext3_journal_get_write_access 41 2482 6 down 57 2253 19 __fswab16 96 2172 33 dst_release 34 2130 23 list_add_tail 88 2030 67 kzalloc 89 2007 76 __constant_memcpy 146 1930 118 tcp_done 8 1918 4 brelse 128 1897 16 __nlmsg_put 21 1856 13 INIT_LIST_HEAD 226 1848 88 pci_read_config_byte 54 1802 9 list_del_init 103 1782 39 ip_rt_put 27 1692 12 pci_read_config_word 50 1675 11 strlen 108 1671 64 __xfrm6_selector_match 3 1615 2 __skb_trim 25 1604 21 do_follow_link 2 1543 1 strncmp 48 1533 22 __xfrm4_selector_match 6 1525 2 outb_p 136 1518 9 tcp_set_state 14 1501 5 find_group_orlov 2 1456 2 inet_twsk_put 16 1448 5 pci_write_config_byte 38 1433 10 up 68 1372 19 pci_read_config_dword 42 1357 12 raw_local_irq_restore 366 1292 88 skb_tailroom 62 1239 23 set_bit 155 1232 68 put_task_struct 53 1227 11 print_irq_desc 2 1206 1 skb_trim 14 1192 13 __do_follow_link 2 1190 1 nf_hook_thresh 16 1164 8 dget 47 1147 19 __raw_local_irq_save 314 1145 85 __fswab32 130 1117 28 - 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/
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