Em Mon, Mar 02, 2015 at 09:49:53PM +0900, Masami Hiramatsu escreveu: > With this patch; > ----- > # ./perf probe -x /usr/lib64/libc-2.17.so -V malloc > Available variables at malloc > @<__libc_malloc+0> > size_t bytes > # ./perf probe -x /usr/lib64/libc-2.17.so -a "malloc bytes" > Added new event: > probe_libc:malloc (on malloc in /usr/lib64/libc-2.17.so with bytes) > > You can now use it in all perf tools, such as: > > perf record -e probe_libc:malloc -aR sleep 1
> Reported-by: Arnaldo Carvalho de Melo <a...@kernel.org> Humm, not working for me, after the patch: [root@ssdandy ~]# perf probe -x /usr/lib64/libc-2.17.so -V malloc Available variables at malloc @<__malloc_check_init+96> (No matched variables) [root@ssdandy ~]# And then the one asking for 'bytes' to be collectd fails. After processing the other patches I'll try to debug this... [root@ssdandy ~]# cat /etc/redhat-release Red Hat Enterprise Linux Server release 7.0 (Maipo) [root@ssdandy ~]# rpm -q glibc glibc-debuginfo glibc-2.17-55.el7_0.3.x86_64 glibc-debuginfo-2.17-55.el7_0.1.x86_64 [root@ssdandy ~]# [acme@ssdandy linux]$ readelf -Ws /usr/lib64/libc-2.17.so| grep malloc 438: 00000000000800c0 245 FUNC GLOBAL DEFAULT 12 __libc_malloc@@GLIBC_2.2.5 545: 0000000000082320 239 FUNC GLOBAL DEFAULT 12 malloc_info@@GLIBC_2.10 810: 00000000000820c0 490 FUNC WEAK DEFAULT 12 malloc_stats@@GLIBC_2.2.5 981: 00000000000802e0 507 FUNC WEAK DEFAULT 12 malloc_get_state@@GLIBC_2.2.5 1077: 00000000003ba740 8 OBJECT WEAK DEFAULT 32 __malloc_hook@@GLIBC_2.2.5 1170: 00000000000800c0 245 FUNC GLOBAL DEFAULT 12 malloc@@GLIBC_2.2.5 1204: 0000000000080d30 222 FUNC WEAK DEFAULT 12 malloc_usable_size@@GLIBC_2.2.5 1450: 0000000000081d50 604 FUNC WEAK DEFAULT 12 malloc_trim@@GLIBC_2.2.5 1767: 00000000003bca60 8 OBJECT WEAK DEFAULT 33 __malloc_initialize_hook@@GLIBC_2.2.5 2061: 00000000000814f0 1286 FUNC WEAK DEFAULT 12 malloc_set_state@@GLIBC_2.2.5 95: 00000000003bbaa0 4 OBJECT LOCAL DEFAULT 33 cache_malloced 1004: 0000000000000000 0 FILE LOCAL DEFAULT ABS malloc.c 1005: 000000000007b060 275 FUNC LOCAL DEFAULT 12 ptmalloc_lock_all 1011: 00000000003bcb30 8 OBJECT LOCAL DEFAULT 33 save_malloc_hook 1013: 00000000000801c0 285 FUNC LOCAL DEFAULT 12 malloc_atfork 1017: 000000000007b180 158 FUNC LOCAL DEFAULT 12 ptmalloc_unlock_all2 1030: 000000000007ba90 174 FUNC LOCAL DEFAULT 12 ptmalloc_unlock_all 1033: 000000000007bb40 232 FUNC LOCAL DEFAULT 12 malloc_printerr 1057: 000000000007c3d0 1518 FUNC LOCAL DEFAULT 12 malloc_consolidate 1089: 000000000007dee0 5195 FUNC LOCAL DEFAULT 12 _int_malloc 1100: 000000000007f330 282 FUNC LOCAL DEFAULT 12 malloc_check 1117: 00000000003bca90 4 OBJECT LOCAL DEFAULT 33 disallow_malloc_check 1118: 00000000003bcaa0 4 OBJECT LOCAL DEFAULT 33 using_malloc_checking 1136: 0000000000080fe0 1015 FUNC LOCAL DEFAULT 12 ptmalloc_init.part.8 1138: 00000000000813e0 21 FUNC LOCAL DEFAULT 12 ptmalloc_init 1139: 0000000000081400 60 FUNC LOCAL DEFAULT 12 malloc_hook_ini 1160: 0000000000082fc0 495 FUNC LOCAL DEFAULT 12 mallochook 1162: 00000000003bcbf0 8 OBJECT LOCAL DEFAULT 33 old_malloc_hook 1181: 00000000003bcc40 8 OBJECT LOCAL DEFAULT 33 tr_old_malloc_hook 1182: 0000000000083fc0 189 FUNC LOCAL DEFAULT 12 tr_mallochook 1194: 00000000003bcc60 8 OBJECT LOCAL DEFAULT 33 malloc_trace_buffer 3673: 00000000003ba170 4 OBJECT LOCAL DEFAULT 32 __libc_malloc_initialized 3734: 00000000000814f0 1286 FUNC LOCAL DEFAULT 12 __malloc_set_state 4047: 0000000000080d30 222 FUNC LOCAL DEFAULT 12 __malloc_usable_size 4101: 0000000000081d50 604 FUNC LOCAL DEFAULT 12 __malloc_trim 4338: 00000000000800c0 245 FUNC LOCAL DEFAULT 12 __GI___libc_malloc 4531: 00000000000802e0 507 FUNC LOCAL DEFAULT 12 __malloc_get_state 4569: 00000000000820c0 490 FUNC LOCAL DEFAULT 12 __malloc_stats 4849: 0000000000080050 107 FUNC LOCAL DEFAULT 12 __malloc_check_init 5351: 00000000000800c0 245 FUNC LOCAL DEFAULT 12 __malloc 5490: 00000000003bca60 8 OBJECT WEAK DEFAULT 33 __malloc_initialize_hook 5571: 00000000000814f0 1286 FUNC WEAK DEFAULT 12 malloc_set_state 5868: 00000000000800c0 245 FUNC GLOBAL DEFAULT 12 malloc 5878: 0000000000082320 239 FUNC GLOBAL DEFAULT 12 malloc_info 5988: 0000000000081d50 604 FUNC WEAK DEFAULT 12 malloc_trim 6526: 00000000003ba740 8 OBJECT WEAK DEFAULT 32 __malloc_hook 6615: 0000000000080d30 222 FUNC WEAK DEFAULT 12 malloc_usable_size 7087: 00000000000802e0 507 FUNC WEAK DEFAULT 12 malloc_get_state 7104: 00000000000800c0 245 FUNC GLOBAL DEFAULT 12 __libc_malloc 7271: 00000000000820c0 490 FUNC WEAK DEFAULT 12 malloc_stats [acme@ssdandy linux]$ - Arnaldo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/