From fd4be13067ef65bf33b965a18c717889305d5fea Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 11 Apr 2016 22:03:56 -0300 Subject: perf evsel: Allow unresolved symbol names to be printed as addresses The fprintf_sym() and fprintf_callchain() methods now allow users to change the existing behaviour of showing "[unknown]" as the name of unresolved symbols to instead show "[0x123456]", i.e. its address. The current patch doesn't change tools to use this facility, the results from 'perf trace' and 'perf script' cotinue like: 70.109 ( 0.001 ms): qemu-system-x8/10153 poll(ufds: 0x7f2d93ffe870, nfds: 1) = 0 Timeout [unknown] (/usr/lib64/libc-2.22.so) [unknown] (/usr/lib64/libspice-server.so.1.10.0) [unknown] (/usr/lib64/libspice-server.so.1.10.0) [unknown] (/usr/lib64/libspice-server.so.1.10.0) start_thread+0xca (/usr/lib64/libpthread-2.22.so) __clone+0x6d (/usr/lib64/libc-2.22.so) The next patch will make 'perf trace' use the new formatting. Suggested-by: Milian Wolff Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-fja1ods5vqpg42mdz09xcz3r@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/session.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) (limited to 'tools/perf/util/session.c') diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index e384b651a3e8..0516d06a2741 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1966,6 +1966,7 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample * int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; int print_oneline = print_opts & PRINT_IP_OPT_ONELINE; int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; + int print_unknown_as_addr = print_opts & PRINT_IP_OPT_UNKNOWN_AS_ADDR; char s = print_oneline ? ' ' : '\t'; if (sample->callchain) { @@ -2003,12 +2004,16 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample * if (print_sym) { printed += fprintf(fp, " "); + node_al.addr = addr; + node_al.map = node->map; + if (print_symoffset) { - node_al.addr = addr; - node_al.map = node->map; - printed += symbol__fprintf_symname_offs(node->sym, &node_al, fp); - } else - printed += symbol__fprintf_symname(node->sym, fp); + printed += __symbol__fprintf_symname_offs(node->sym, &node_al, + print_unknown_as_addr, fp); + } else { + printed += __symbol__fprintf_symname(node->sym, &node_al, + print_unknown_as_addr, fp); + } } if (print_dso) { @@ -2043,6 +2048,7 @@ int perf_evsel__fprintf_sym(struct perf_evsel *evsel, struct perf_sample *sample int print_dso = print_opts & PRINT_IP_OPT_DSO; int print_symoffset = print_opts & PRINT_IP_OPT_SYMOFFSET; int print_srcline = print_opts & PRINT_IP_OPT_SRCLINE; + int print_unknown_as_addr = print_opts & PRINT_IP_OPT_UNKNOWN_AS_ADDR; if (symbol_conf.use_callchain && sample->callchain) { printed += perf_evsel__fprintf_callchain(evsel, sample, al, left_alignment, @@ -2055,10 +2061,13 @@ int perf_evsel__fprintf_sym(struct perf_evsel *evsel, struct perf_sample *sample if (print_sym) { printed += fprintf(fp, " "); - if (print_symoffset) - printed += symbol__fprintf_symname_offs(al->sym, al, fp); - else - printed += symbol__fprintf_symname(al->sym, fp); + if (print_symoffset) { + printed += __symbol__fprintf_symname_offs(al->sym, al, + print_unknown_as_addr, fp); + } else { + printed += __symbol__fprintf_symname(al->sym, al, + print_unknown_as_addr, fp); + } } if (print_dso) { -- cgit v1.2.1