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Inac12f6764c("perf tools: Implement branch_type event parameter") we started using the parse_branch_str() function from one of the files used in the python binding, which caused this entry in 'perf test' to fail: # perf test -v python 16: Try 'import perf' in python, checking link problems : --- start --- test child forked, pid 16667 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /tmp/build/perf/python/perf.so: undefined symbol: parse_branch_str test child finished with -1 ---- end ---- Try 'import perf' in python, checking link problems: FAILED! # I must've commited some mistake when running 'perf test' to send the pull request for the perf-core-for-mingo-20161024 tag, to have let this regression to pass, sigh. Just add tools/perf/util/parse-branch-options.c and switch from using ui__warning(), that is not available in the python binding, use pr_warning() instead, which is good enough for this case. Now: # perf test python 16: Try 'import perf' in python, checking link problems : Ok # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Cc: Andi Kleen <ak@linux.intel.com> Fixes:ac12f6764c("perf tools: Implement branch_type event parameter") Link: http://lkml.kernel.org/n/tip-9kn1ct1cx9ppwqlmzl6z0xhs@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
105 lines
2.1 KiB
C
105 lines
2.1 KiB
C
#include "perf.h"
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#include "util/util.h"
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#include "util/debug.h"
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#include <subcmd/parse-options.h>
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#include "util/parse-branch-options.h"
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#define BRANCH_OPT(n, m) \
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{ .name = n, .mode = (m) }
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#define BRANCH_END { .name = NULL }
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struct branch_mode {
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const char *name;
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int mode;
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};
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static const struct branch_mode branch_modes[] = {
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BRANCH_OPT("u", PERF_SAMPLE_BRANCH_USER),
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BRANCH_OPT("k", PERF_SAMPLE_BRANCH_KERNEL),
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BRANCH_OPT("hv", PERF_SAMPLE_BRANCH_HV),
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BRANCH_OPT("any", PERF_SAMPLE_BRANCH_ANY),
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BRANCH_OPT("any_call", PERF_SAMPLE_BRANCH_ANY_CALL),
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BRANCH_OPT("any_ret", PERF_SAMPLE_BRANCH_ANY_RETURN),
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BRANCH_OPT("ind_call", PERF_SAMPLE_BRANCH_IND_CALL),
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BRANCH_OPT("abort_tx", PERF_SAMPLE_BRANCH_ABORT_TX),
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BRANCH_OPT("in_tx", PERF_SAMPLE_BRANCH_IN_TX),
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BRANCH_OPT("no_tx", PERF_SAMPLE_BRANCH_NO_TX),
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BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
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BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP),
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BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL),
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BRANCH_END
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};
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int parse_branch_str(const char *str, __u64 *mode)
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{
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#define ONLY_PLM \
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(PERF_SAMPLE_BRANCH_USER |\
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PERF_SAMPLE_BRANCH_KERNEL |\
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PERF_SAMPLE_BRANCH_HV)
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int ret = 0;
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char *p, *s;
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char *os = NULL;
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const struct branch_mode *br;
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if (str == NULL) {
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*mode = PERF_SAMPLE_BRANCH_ANY;
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return 0;
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}
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/* because str is read-only */
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s = os = strdup(str);
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if (!s)
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return -1;
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for (;;) {
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p = strchr(s, ',');
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if (p)
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*p = '\0';
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for (br = branch_modes; br->name; br++) {
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if (!strcasecmp(s, br->name))
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break;
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}
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if (!br->name) {
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ret = -1;
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pr_warning("unknown branch filter %s,"
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" check man page\n", s);
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goto error;
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}
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*mode |= br->mode;
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if (!p)
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break;
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s = p + 1;
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}
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/* default to any branch */
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if ((*mode & ~ONLY_PLM) == 0) {
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*mode = PERF_SAMPLE_BRANCH_ANY;
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}
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error:
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free(os);
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return ret;
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}
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int
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parse_branch_stack(const struct option *opt, const char *str, int unset)
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{
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__u64 *mode = (__u64 *)opt->value;
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if (unset)
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return 0;
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/*
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* cannot set it twice, -b + --branch-filter for instance
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*/
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if (*mode)
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return -1;
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return parse_branch_str(str, mode);
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}
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