1d037ca164
perf defines both __used and __unused variables to use for marking
unused variables. The variable __used is defined to
__attribute__((__unused__)), which contradicts the kernel definition to
__attribute__((__used__)) for new gcc versions. On Android, __used is
also defined in system headers and this leads to warnings like: warning:
'__used__' attribute ignored
__unused is not defined in the kernel and is not a standard definition.
If __unused is included everywhere instead of __used, this leads to
conflicts with glibc headers, since glibc has a variables with this name
in its headers.
The best approach is to use __maybe_unused, the definition used in the
kernel for __attribute__((unused)). In this way there is only one
definition in perf sources (instead of 2 definitions that point to the
same thing: __used and __unused) and it works on both Linux and Android.
This patch simply replaces all instances of __used and __unused with
__maybe_unused.
Signed-off-by: Irina Tirdea <irina.tirdea@intel.com>
Acked-by: Pekka Enberg <penberg@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com
[ committer note: fixed up conflict with a116e05 in builtin-sched.c ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
135 lines
2.9 KiB
C
135 lines
2.9 KiB
C
/*
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* Builtin evlist command: Show the list of event selectors present
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* in a perf.data file.
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*/
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#include "builtin.h"
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#include "util/util.h"
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#include <linux/list.h>
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#include "perf.h"
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#include "util/evlist.h"
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#include "util/evsel.h"
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#include "util/parse-events.h"
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#include "util/parse-options.h"
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#include "util/session.h"
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struct perf_attr_details {
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bool freq;
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bool verbose;
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};
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static int comma_printf(bool *first, const char *fmt, ...)
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{
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va_list args;
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int ret = 0;
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if (!*first) {
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ret += printf(",");
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} else {
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ret += printf(":");
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*first = false;
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}
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va_start(args, fmt);
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ret += vprintf(fmt, args);
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va_end(args);
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return ret;
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}
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static int __if_print(bool *first, const char *field, u64 value)
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{
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if (value == 0)
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return 0;
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return comma_printf(first, " %s: %" PRIu64, field, value);
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}
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#define if_print(field) __if_print(&first, #field, pos->attr.field)
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static int __cmd_evlist(const char *input_name, struct perf_attr_details *details)
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{
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struct perf_session *session;
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struct perf_evsel *pos;
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session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
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if (session == NULL)
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return -ENOMEM;
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list_for_each_entry(pos, &session->evlist->entries, node) {
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bool first = true;
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printf("%s", perf_evsel__name(pos));
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if (details->verbose || details->freq) {
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comma_printf(&first, " sample_freq=%" PRIu64,
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(u64)pos->attr.sample_freq);
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}
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if (details->verbose) {
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if_print(type);
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if_print(config);
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if_print(config1);
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if_print(config2);
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if_print(size);
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if_print(sample_type);
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if_print(read_format);
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if_print(disabled);
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if_print(inherit);
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if_print(pinned);
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if_print(exclusive);
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if_print(exclude_user);
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if_print(exclude_kernel);
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if_print(exclude_hv);
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if_print(exclude_idle);
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if_print(mmap);
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if_print(comm);
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if_print(freq);
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if_print(inherit_stat);
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if_print(enable_on_exec);
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if_print(task);
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if_print(watermark);
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if_print(precise_ip);
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if_print(mmap_data);
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if_print(sample_id_all);
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if_print(exclude_host);
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if_print(exclude_guest);
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if_print(__reserved_1);
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if_print(wakeup_events);
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if_print(bp_type);
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if_print(branch_sample_type);
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}
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putchar('\n');
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}
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perf_session__delete(session);
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return 0;
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}
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static const char * const evlist_usage[] = {
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"perf evlist [<options>]",
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NULL
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};
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int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
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{
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struct perf_attr_details details = { .verbose = false, };
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const char *input_name = NULL;
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const struct option options[] = {
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OPT_STRING('i', "input", &input_name, "file",
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"Input file name"),
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OPT_BOOLEAN('F', "freq", &details.freq,
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"Show the sample frequency"),
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OPT_BOOLEAN('v', "verbose", &details.verbose,
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"Show all event attr details"),
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OPT_END()
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};
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argc = parse_options(argc, argv, options, evlist_usage, 0);
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if (argc)
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usage_with_options(evlist_usage, options);
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return __cmd_evlist(input_name, &details);
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}
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