perf trace: Add --verbose option
Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-ain6q4u8g3bpnh18yhw24v2x@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -49,6 +49,10 @@ OPTIONS
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--uid=::
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Record events in threads owned by uid. Name or number.
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-v::
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--verbose=::
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Verbosity level.
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-i::
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--no-inherit::
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Child tasks do not inherit counters.
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@ -1,6 +1,7 @@
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#include <traceevent/event-parse.h>
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#include "builtin.h"
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#include "util/color.h"
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#include "util/debug.h"
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#include "util/evlist.h"
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#include "util/machine.h"
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#include "util/thread.h"
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@ -311,10 +312,12 @@ static struct syscall *trace__syscall_info(struct trace *trace,
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return &trace->syscalls.table[id];
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out_cant_read:
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fprintf(trace->output, "Problems reading syscall %d", id);
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if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
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fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
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fputs(" information", trace->output);
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if (verbose) {
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fprintf(trace->output, "Problems reading syscall %d", id);
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if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL)
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fprintf(trace->output, "(%s)", trace->syscalls.table[id].name);
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fputs(" information\n", trace->output);
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}
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return NULL;
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}
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@ -714,6 +717,7 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
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"show only events with duration > N.M ms",
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trace__set_duration),
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OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"),
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OPT_INCR('v', "verbose", &verbose, "be more verbose"),
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OPT_END()
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};
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int err;
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