From 04b34729e4584adfcb2e8ea908ff9478b1563001 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Mon, 26 Aug 2013 11:36:30 -0300 Subject: [PATCH] perf trace: Allow printing syscall return values in hex event_format->flags has a FIELD_IS_POINTER, but it is not set for the sys_exit 'ret' field in syscalls like mmap, so we need a way to ask for hex printing for pointer returns and keep things like 'read' returns printing in decimal. Cc: Adrian Hunter Cc: David Ahern Cc: Frederic Weisbecker Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-lfuveegw4od1t08n7bsmonrm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-trace.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 9e23660d96eb..b2038fdefca1 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -22,13 +22,18 @@ static struct syscall_fmt { const char *alias; bool errmsg; bool timeout; + bool hexret; } syscall_fmts[] = { { .name = "access", .errmsg = true, }, { .name = "arch_prctl", .errmsg = true, .alias = "prctl", }, + { .name = "brk", .hexret = true, }, + { .name = "mmap", .hexret = true, }, { .name = "connect", .errmsg = true, }, { .name = "fstat", .errmsg = true, .alias = "newfstat", }, { .name = "fstatat", .errmsg = true, .alias = "newfstatat", }, { .name = "futex", .errmsg = true, }, + { .name = "mmap", .hexret = true, }, + { .name = "mremap", .hexret = true, }, { .name = "open", .errmsg = true, }, { .name = "poll", .errmsg = true, .timeout = true, }, { .name = "ppoll", .errmsg = true, .timeout = true, }, @@ -475,6 +480,8 @@ static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, fprintf(trace->output, ") = -1 %s %s", e, emsg); } else if (ret == 0 && sc->fmt->timeout) fprintf(trace->output, ") = 0 Timeout"); + else if (sc->fmt->hexret) + fprintf(trace->output, ") = %#x", ret); else goto signed_print; -- GitLab