Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755552AbbLVRIU (ORCPT ); Tue, 22 Dec 2015 12:08:20 -0500 Received: from mail-pa0-f41.google.com ([209.85.220.41]:34816 "EHLO mail-pa0-f41.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755511AbbLVRIR (ORCPT ); Tue, 22 Dec 2015 12:08:17 -0500 From: Namhyung Kim To: Arnaldo Carvalho de Melo Cc: Ingo Molnar , Peter Zijlstra , Jiri Olsa , LKML , David Ahern , Steven Rostedt , Frederic Weisbecker , Andi Kleen , Wang Nan Subject: [PATCH 06/13] perf tools: Try to show pretty printed output for dynamic sort keys Date: Wed, 23 Dec 2015 02:07:03 +0900 Message-Id: <1450804030-29193-7-git-send-email-namhyung@kernel.org> X-Mailer: git-send-email 2.6.4 In-Reply-To: <1450804030-29193-1-git-send-email-namhyung@kernel.org> References: <1450804030-29193-1-git-send-email-namhyung@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5384 Lines: 204 Each tracepoint event has format string for print to improve readability. Try to parse the output and match the field name. If it finds one, use that for the result. If not, fallbacks to the original output. For example, sort on kmem:kmalloc.gfp_flags looks like below: (Note: libtraceevent plugins are not installed on my system. They might affect the output below) Before: # Overhead Command gfp_flags # ........ ....... .......... # 99.89% perf 32848 0.06% sleep 208 0.03% perf 32976 0.01% perf 208 After: # Overhead Command gfp_flags # ........ ....... ................... # 99.89% perf GFP_NOFS|GFP_ZERO 0.06% sleep GFP_KERNEL 0.03% perf GFP_KERNEL|GFP_ZERO 0.01% perf GFP_KERNEL Cc: Steven Rostedt Signed-off-by: Namhyung Kim --- tools/perf/util/hist.c | 1 + tools/perf/util/sort.c | 105 ++++++++++++++++++++++++++++++++++++++++++++++--- tools/perf/util/sort.h | 1 + 3 files changed, 102 insertions(+), 5 deletions(-) diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index c0c92a3daa69..ef1a4a5cc610 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -978,6 +978,7 @@ void hist_entry__delete(struct hist_entry *he) if (he->srcfile && he->srcfile[0]) free(he->srcfile); free_callchain(he->callchain); + free(he->trace_output); free(he); } diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 763d810cdb38..91c48f7a7f02 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1560,6 +1560,62 @@ static int hde_width(struct hpp_dynamic_entry *hde) return hde->hpp.len; } +static char *get_trace_output(struct hist_entry *he) +{ + struct trace_seq seq; + struct perf_evsel *evsel; + struct pevent_record rec = { + .data = he->raw_data, + .size = he->raw_size, + }; + + evsel = hists_to_evsel(he->hists); + + trace_seq_init(&seq); + pevent_event_info(&seq, evsel->tp_format, &rec); + return seq.buffer; +} + +static void update_dynamic_len(struct hpp_dynamic_entry *hde, + struct hist_entry *he) +{ + char *str, *pos; + struct format_field *field = hde->field; + size_t namelen; + bool last = false; + + /* parse pretty print result and update max length */ + if (!he->trace_output) + he->trace_output = get_trace_output(he); + + namelen = strlen(field->name); + str = he->trace_output; + + while (str) { + pos = strchr(str, ' '); + if (pos == NULL) { + last = true; + pos = str + strlen(str); + } + + if (!strncmp(str, field->name, namelen)) { + size_t len; + + str += namelen + 1; + len = pos - str; + + if (len > hde->dynamic_len) + hde->dynamic_len = len; + break; + } + + if (last) + str = NULL; + else + str = pos + 1; + } +} + static int __sort__hde_header(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, struct perf_evsel *evsel __maybe_unused) { @@ -1594,7 +1650,10 @@ static int __sort__hde_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, { struct hpp_dynamic_entry *hde; size_t len = fmt->user_len; - struct trace_seq seq; + char *str, *pos; + struct format_field *field; + size_t namelen; + bool last = false; int ret; hde = container_of(fmt, struct hpp_dynamic_entry, hpp); @@ -1605,10 +1664,43 @@ static int __sort__hde_entry(struct perf_hpp_fmt *fmt, struct perf_hpp *hpp, if (hists_to_evsel(he->hists) != hde->evsel) return scnprintf(hpp->buf, hpp->size, "%*.*s", len, len, "N/A"); - trace_seq_init(&seq); - print_event_field(&seq, he->raw_data, hde->field); - ret = scnprintf(hpp->buf, hpp->size, "%*.*s", len, len, seq.buffer); - trace_seq_destroy(&seq); + field = hde->field; + + namelen = strlen(field->name); + str = he->trace_output; + + while (str) { + pos = strchr(str, ' '); + if (pos == NULL) { + last = true; + pos = str + strlen(str); + } + + if (!strncmp(str, field->name, namelen)) { + str += namelen + 1; + str = strndup(str, pos - str); + + if (str == NULL) + return scnprintf(hpp->buf, hpp->size, + "%*.*s", len, len, "ERROR"); + break; + } + + if (last) + str = NULL; + else + str = pos + 1; + } + + if (str == NULL) { + struct trace_seq seq; + trace_seq_init(&seq); + print_event_field(&seq, he->raw_data, hde->field); + str = seq.buffer; + } + + ret = scnprintf(hpp->buf, hpp->size, "%*.*s", len, len, str); + free(str); return ret; } @@ -1638,6 +1730,9 @@ static int64_t __sort__hde_cmp(struct perf_hpp_fmt *fmt, } else { offset = field->offset; size = field->size; + + update_dynamic_len(hde, a); + update_dynamic_len(hde, b); } return memcmp(a->raw_data + offset, b->raw_data + offset, size); diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 1a00f1eb9d21..f6d2a7e3e7f2 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -124,6 +124,7 @@ struct hist_entry { struct mem_info *mem_info; void *raw_data; u32 raw_size; + void *trace_output; struct callchain_root callchain[0]; /* must be last member */ }; -- 2.6.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/