diff options
author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-14 20:48:07 +0300 |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-04-14 20:48:07 +0300 |
commit | 91d7b2de318ff701451dfc7ede1c029b150ef0e9 (patch) | |
tree | 98440b6dfabaf5dc1490bd64f6d5993eea9bf3eb /tools/perf/util | |
parent | bbf86c43eace367e805199f94ad8b5a45636f805 (diff) | |
download | linux-91d7b2de318ff701451dfc7ede1c029b150ef0e9.tar.xz |
perf callchain: Start moving away from global per thread cursors
The recent perf_evsel__fprintf_callchain() move to evsel.c added several
new symbol requirements to the python binding, for instance:
# perf test -v python
16: Try 'import perf' in python, checking link problems :
--- start ---
test child forked, pid 18030
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: /tmp/build/perf/python/perf.so: undefined symbol:
callchain_cursor
test child finished with -1
---- end ----
Try 'import perf' in python, checking link problems: FAILED!
#
This would require linking against callchain.c to access to the global
callchain_cursor variables.
Since lots of functions already receive as a parameter a
callchain_cursor struct pointer, make that be the case for some more
function so that we can start phasing out usage of yet another global
variable.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/n/tip-djko3097eyg2rn66v2qcqfvn@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util')
-rw-r--r-- | tools/perf/util/callchain.c | 5 | ||||
-rw-r--r-- | tools/perf/util/callchain.h | 3 | ||||
-rw-r--r-- | tools/perf/util/evsel.c | 9 | ||||
-rw-r--r-- | tools/perf/util/hist.c | 2 | ||||
-rw-r--r-- | tools/perf/util/machine.c | 26 | ||||
-rw-r--r-- | tools/perf/util/machine.h | 4 | ||||
-rw-r--r-- | tools/perf/util/scripting-engines/trace-event-perl.c | 2 | ||||
-rw-r--r-- | tools/perf/util/scripting-engines/trace-event-python.c | 2 |
8 files changed, 32 insertions, 21 deletions
diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index 24b4bd0d7754..2b4ceaf058bb 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -788,7 +788,8 @@ int callchain_cursor_append(struct callchain_cursor *cursor, return 0; } -int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent, +int sample__resolve_callchain(struct perf_sample *sample, + struct callchain_cursor *cursor, struct symbol **parent, struct perf_evsel *evsel, struct addr_location *al, int max_stack) { @@ -797,7 +798,7 @@ int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent if (symbol_conf.use_callchain || symbol_conf.cumulate_callchain || sort__has_parent) { - return thread__resolve_callchain(al->thread, evsel, sample, + return thread__resolve_callchain(al->thread, cursor, evsel, sample, parent, al, max_stack); } return 0; diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index d2a9e694810c..cae5a7b1f5c8 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -212,7 +212,8 @@ struct hist_entry; int record_parse_callchain_opt(const struct option *opt, const char *arg, int unset); int record_callchain_opt(const struct option *opt, const char *arg, int unset); -int sample__resolve_callchain(struct perf_sample *sample, struct symbol **parent, +int sample__resolve_callchain(struct perf_sample *sample, + struct callchain_cursor *cursor, struct symbol **parent, struct perf_evsel *evsel, struct addr_location *al, int max_stack); int hist_entry__append_callchain(struct hist_entry *he, struct perf_sample *sample); diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 6e86598682be..38f464a4fa04 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2349,6 +2349,7 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample * FILE *fp) { int printed = 0; + struct callchain_cursor cursor; struct callchain_cursor_node *node; int print_ip = print_opts & EVSEL__PRINT_IP; int print_sym = print_opts & EVSEL__PRINT_SYM; @@ -2362,14 +2363,14 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample * if (sample->callchain) { struct addr_location node_al; - if (thread__resolve_callchain(al->thread, evsel, + if (thread__resolve_callchain(al->thread, &cursor, evsel, sample, NULL, NULL, stack_depth) != 0) { if (verbose) error("Failed to resolve callchain. Skipping\n"); return printed; } - callchain_cursor_commit(&callchain_cursor); + callchain_cursor_commit(&cursor); if (print_symoffset) node_al = *al; @@ -2377,7 +2378,7 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample * while (stack_depth) { u64 addr = 0; - node = callchain_cursor_current(&callchain_cursor); + node = callchain_cursor_current(&cursor); if (!node) break; @@ -2420,7 +2421,7 @@ int perf_evsel__fprintf_callchain(struct perf_evsel *evsel, struct perf_sample * stack_depth--; next: - callchain_cursor_advance(&callchain_cursor); + callchain_cursor_advance(&cursor); } } diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index 3d34c57dfbe2..991a351a8a41 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -953,7 +953,7 @@ int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al, { int err, err2; - err = sample__resolve_callchain(iter->sample, &iter->parent, + err = sample__resolve_callchain(iter->sample, &callchain_cursor, &iter->parent, iter->evsel, al, max_stack_depth); if (err) return err; diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c index 80b9b6a87990..0c4dabc69932 100644 --- a/tools/perf/util/machine.c +++ b/tools/perf/util/machine.c @@ -1599,6 +1599,7 @@ struct mem_info *sample__resolve_mem(struct perf_sample *sample, } static int add_callchain_ip(struct thread *thread, + struct callchain_cursor *cursor, struct symbol **parent, struct addr_location *root_al, u8 *cpumode, @@ -1630,7 +1631,7 @@ static int add_callchain_ip(struct thread *thread, * It seems the callchain is corrupted. * Discard all. */ - callchain_cursor_reset(&callchain_cursor); + callchain_cursor_reset(cursor); return 1; } return 0; @@ -1648,13 +1649,13 @@ static int add_callchain_ip(struct thread *thread, /* Treat this symbol as the root, forgetting its callees. */ *root_al = al; - callchain_cursor_reset(&callchain_cursor); + callchain_cursor_reset(cursor); } } if (symbol_conf.hide_unresolved && al.sym == NULL) return 0; - return callchain_cursor_append(&callchain_cursor, al.addr, al.map, al.sym); + return callchain_cursor_append(cursor, al.addr, al.map, al.sym); } struct branch_info *sample__resolve_bstack(struct perf_sample *sample, @@ -1724,6 +1725,7 @@ static int remove_loops(struct branch_entry *l, int nr) * negative error code on other errors. */ static int resolve_lbr_callchain_sample(struct thread *thread, + struct callchain_cursor *cursor, struct perf_sample *sample, struct symbol **parent, struct addr_location *root_al, @@ -1778,7 +1780,7 @@ static int resolve_lbr_callchain_sample(struct thread *thread, ip = lbr_stack->entries[0].to; } - err = add_callchain_ip(thread, parent, root_al, &cpumode, ip); + err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip); if (err) return (err < 0) ? err : 0; } @@ -1789,6 +1791,7 @@ static int resolve_lbr_callchain_sample(struct thread *thread, } static int thread__resolve_callchain_sample(struct thread *thread, + struct callchain_cursor *cursor, struct perf_evsel *evsel, struct perf_sample *sample, struct symbol **parent, @@ -1803,10 +1806,10 @@ static int thread__resolve_callchain_sample(struct thread *thread, int skip_idx = -1; int first_call = 0; - callchain_cursor_reset(&callchain_cursor); + callchain_cursor_reset(cursor); if (has_branch_callstack(evsel)) { - err = resolve_lbr_callchain_sample(thread, sample, parent, + err = resolve_lbr_callchain_sample(thread, cursor, sample, parent, root_al, max_stack); if (err) return (err < 0) ? err : 0; @@ -1863,10 +1866,10 @@ static int thread__resolve_callchain_sample(struct thread *thread, nr = remove_loops(be, nr); for (i = 0; i < nr; i++) { - err = add_callchain_ip(thread, parent, root_al, + err = add_callchain_ip(thread, cursor, parent, root_al, NULL, be[i].to); if (!err) - err = add_callchain_ip(thread, parent, root_al, + err = add_callchain_ip(thread, cursor, parent, root_al, NULL, be[i].from); if (err == -EINVAL) break; @@ -1896,7 +1899,7 @@ check_calls: #endif ip = chain->ips[j]; - err = add_callchain_ip(thread, parent, root_al, &cpumode, ip); + err = add_callchain_ip(thread, cursor, parent, root_al, &cpumode, ip); if (err) return (err < 0) ? err : 0; @@ -1916,13 +1919,14 @@ static int unwind_entry(struct unwind_entry *entry, void *arg) } int thread__resolve_callchain(struct thread *thread, + struct callchain_cursor *cursor, struct perf_evsel *evsel, struct perf_sample *sample, struct symbol **parent, struct addr_location *root_al, int max_stack) { - int ret = thread__resolve_callchain_sample(thread, evsel, + int ret = thread__resolve_callchain_sample(thread, cursor, evsel, sample, parent, root_al, max_stack); if (ret) @@ -1938,7 +1942,7 @@ int thread__resolve_callchain(struct thread *thread, (!sample->user_stack.size)) return 0; - return unwind__get_entries(unwind_entry, &callchain_cursor, + return unwind__get_entries(unwind_entry, cursor, thread, sample, max_stack); } diff --git a/tools/perf/util/machine.h b/tools/perf/util/machine.h index 8499db281158..382873bdc563 100644 --- a/tools/perf/util/machine.h +++ b/tools/perf/util/machine.h @@ -141,7 +141,11 @@ struct branch_info *sample__resolve_bstack(struct perf_sample *sample, struct addr_location *al); struct mem_info *sample__resolve_mem(struct perf_sample *sample, struct addr_location *al); + +struct callchain_cursor; + int thread__resolve_callchain(struct thread *thread, + struct callchain_cursor *cursor, struct perf_evsel *evsel, struct perf_sample *sample, struct symbol **parent, diff --git a/tools/perf/util/scripting-engines/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c index 35ed00a600fb..ae1cebc307c5 100644 --- a/tools/perf/util/scripting-engines/trace-event-perl.c +++ b/tools/perf/util/scripting-engines/trace-event-perl.c @@ -263,7 +263,7 @@ static SV *perl_process_callchain(struct perf_sample *sample, if (!symbol_conf.use_callchain || !sample->callchain) goto exit; - if (thread__resolve_callchain(al->thread, evsel, + if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel, sample, NULL, NULL, PERF_MAX_STACK_DEPTH) != 0) { pr_err("Failed to resolve callchain. Skipping\n"); diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c index fbd05242b4e5..525eb49e7ba6 100644 --- a/tools/perf/util/scripting-engines/trace-event-python.c +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -323,7 +323,7 @@ static PyObject *python_process_callchain(struct perf_sample *sample, if (!symbol_conf.use_callchain || !sample->callchain) goto exit; - if (thread__resolve_callchain(al->thread, evsel, + if (thread__resolve_callchain(al->thread, &callchain_cursor, evsel, sample, NULL, NULL, scripting_max_stack) != 0) { pr_err("Failed to resolve callchain. Skipping\n"); |