Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759911AbbFBRPm (ORCPT ); Tue, 2 Jun 2015 13:15:42 -0400 Received: from e37.co.us.ibm.com ([32.97.110.158]:58200 "EHLO e37.co.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759128AbbFBRNA (ORCPT ); Tue, 2 Jun 2015 13:13:00 -0400 From: Sukadev Bhattiprolu To: mingo@redhat.com, ak@linux.intel.com, Michael Ellerman , Jiri Olsa , Arnaldo Carvalho de Melo Cc: namhyung@kernel.org, linuxppc-dev@lists.ozlabs.org, Subject: [PATCH v13 06/14] perf, tools: Support alias descriptions Date: Tue, 2 Jun 2015 10:12:06 -0700 Message-Id: <1433265135-20426-7-git-send-email-sukadev@linux.vnet.ibm.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1433265135-20426-1-git-send-email-sukadev@linux.vnet.ibm.com> References: <1433265135-20426-1-git-send-email-sukadev@linux.vnet.ibm.com> X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 15060217-0025-0000-0000-00000B2ED71F Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5343 Lines: 199 From: Andi Kleen Add support to print alias descriptions in perf list, which are taken from the generated event files. The sorting code is changed to put the events with descriptions at the end. The descriptions are printed as possibly multiple word wrapped lines. Example output: % perf list ... arith.fpu_div [Divide operations executed] arith.fpu_div_active [Cycles when divider is busy executing divide operations] Signed-off-by: Andi Kleen Signed-off-by: Sukadev Bhattiprolu Changelog - Delete a redundant free() --- tools/perf/util/pmu.c | 83 +++++++++++++++++++++++++++++++++++++------------ tools/perf/util/pmu.h | 1 + 2 files changed, 64 insertions(+), 20 deletions(-) diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index 0932323..77b6801 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -239,10 +239,7 @@ static int __perf_pmu__new_alias(struct list_head *list, char *name, char *dir, perf_pmu__parse_snapshot(alias, dir, name); } - /* - * TODO: pickup description from Andi's patchset - */ - //alias->desc = desc ? strdpu(desc) : NULL; + alias->desc = desc ? strdup(desc) : NULL; list_add_tail(&alias->list, list); @@ -993,11 +990,42 @@ static char *format_alias_or(char *buf, int len, struct perf_pmu *pmu, return buf; } -static int cmp_string(const void *a, const void *b) +struct pair { + char *name; + char *desc; +}; + +static int cmp_pair(const void *a, const void *b) { - const char * const *as = a; - const char * const *bs = b; - return strcmp(*as, *bs); + const struct pair *as = a; + const struct pair *bs = b; + + /* Put extra events last */ + if (!!as->desc != !!bs->desc) + return !!as->desc - !!bs->desc; + return strcmp(as->name, bs->name); +} + +static void wordwrap(char *s, int start, int max, int corr) +{ + int column = start; + int n; + + while (*s) { + int wlen = strcspn(s, " \t"); + + if (column + wlen >= max && column > start) { + printf("\n%*s", start, ""); + column = start + corr; + } + n = printf("%s%.*s", column > start ? " " : "", wlen, s); + if (n <= 0) + break; + s += wlen; + column += n; + while (isspace(*s)) + s++; + } } void print_pmu_events(const char *event_glob, bool name_only) @@ -1007,7 +1035,9 @@ void print_pmu_events(const char *event_glob, bool name_only) char buf[1024]; int printed = 0; int len, j; - char **aliases; + struct pair *aliases; + int numdesc = 0; + int columns = 78; pmu = NULL; len = 0; @@ -1017,14 +1047,15 @@ void print_pmu_events(const char *event_glob, bool name_only) if (pmu->selectable) len++; } - aliases = zalloc(sizeof(char *) * len); + aliases = zalloc(sizeof(struct pair) * len); if (!aliases) goto out_enomem; pmu = NULL; j = 0; while ((pmu = perf_pmu__scan(pmu)) != NULL) { list_for_each_entry(alias, &pmu->aliases, list) { - char *name = format_alias(buf, sizeof(buf), pmu, alias); + char *name = alias->desc ? alias->name : + format_alias(buf, sizeof(buf), pmu, alias); bool is_cpu = !strcmp(pmu->name, "cpu"); if (event_glob != NULL && @@ -1033,37 +1064,49 @@ void print_pmu_events(const char *event_glob, bool name_only) event_glob)))) continue; - if (is_cpu && !name_only) + if (is_cpu && !name_only && !alias->desc) name = format_alias_or(buf, sizeof(buf), pmu, alias); - aliases[j] = strdup(name); - if (aliases[j] == NULL) - goto out_enomem; + aliases[j].name = name; + if (is_cpu && !name_only && !alias->desc) + aliases[j].name = format_alias_or(buf, sizeof(buf), + pmu, alias); + aliases[j].name = strdup(aliases[j].name); + /* failure harmless */ + aliases[j].desc = alias->desc; j++; } if (pmu->selectable) { char *s; if (asprintf(&s, "%s//", pmu->name) < 0) goto out_enomem; - aliases[j] = s; + aliases[j].name = s; j++; } } len = j; - qsort(aliases, len, sizeof(char *), cmp_string); + qsort(aliases, len, sizeof(struct pair), cmp_pair); for (j = 0; j < len; j++) { if (name_only) { - printf("%s ", aliases[j]); + printf("%s ", aliases[j].name); continue; } - printf(" %-50s [Kernel PMU event]\n", aliases[j]); + if (aliases[j].desc) { + if (numdesc++ == 0) + printf("\n"); + printf(" %-50s\n", aliases[j].name); + printf("%*s", 8, "["); + wordwrap(aliases[j].desc, 8, columns, 0); + printf("]\n"); + } else + printf(" %-50s [Kernel PMU event]\n", aliases[j].name); printed++; } if (printed) printf("\n"); out_free: for (j = 0; j < len; j++) - zfree(&aliases[j]); + zfree(&aliases[j].name); zfree(&aliases); return; diff --git a/tools/perf/util/pmu.h b/tools/perf/util/pmu.h index 7b9c8cf..e7b1010 100644 --- a/tools/perf/util/pmu.h +++ b/tools/perf/util/pmu.h @@ -38,6 +38,7 @@ struct perf_pmu_info { struct perf_pmu_alias { char *name; + char *desc; struct list_head terms; /* HEAD struct parse_events_term -> list */ struct list_head list; /* ELEM */ char unit[UNIT_MAX_LEN+1]; -- 1.7.9.5 -- 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/