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![Anshuman Khandual](/assets/img/avatar_default.png)
This adds all remaining branch filters i.e "no_cycles", "no_flags" and "hw_index". While here, also updates the documentation. Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Cc: James Clark <james.clark@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20221205064443.533587-1-anshuman.khandual@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
114 lines
2.5 KiB
C
114 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "util/debug.h"
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#include "util/event.h"
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#include <subcmd/parse-options.h>
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#include "util/parse-branch-options.h"
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#include <stdlib.h>
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#include <string.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_OPT("no_flags", PERF_SAMPLE_BRANCH_NO_FLAGS),
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BRANCH_OPT("no_cycles", PERF_SAMPLE_BRANCH_NO_CYCLES),
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BRANCH_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
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BRANCH_OPT("stack", PERF_SAMPLE_BRANCH_CALL_STACK),
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BRANCH_OPT("hw_index", PERF_SAMPLE_BRANCH_HW_INDEX),
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BRANCH_OPT("priv", PERF_SAMPLE_BRANCH_PRIV_SAVE),
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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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pr_err("Error: Can't use --branch-any (-b) with --branch-filter (-j).\n");
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return -1;
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}
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return parse_branch_str(str, mode);
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}
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