From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755267AbcESWVs (ORCPT ); Thu, 19 May 2016 18:21:48 -0400 Received: from bombadil.infradead.org ([198.137.202.9]:51255 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755231AbcESWVp (ORCPT ); Thu, 19 May 2016 18:21:45 -0400 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Chris Ryder , Alexander Shishkin , Mark Rutland , Peter Zijlstra , Will Deacon , Arnaldo Carvalho de Melo Subject: [PATCH 09/11] perf annotate: Sort list of recognised instructions Date: Thu, 19 May 2016 19:21:31 -0300 Message-Id: <1463696493-27528-10-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.5.5 In-Reply-To: <1463696493-27528-1-git-send-email-acme@kernel.org> References: <1463696493-27528-1-git-send-email-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Chris Ryder Currently the list of instructions recognised by perf annotate has to be explicitly written in sorted order. This makes it easy to make mistakes when adding new instructions. Sort the list of instructions on first access. Signed-off-by: Chris Ryder Acked-by: Pawel Moll Cc: Alexander Shishkin Cc: Mark Rutland Cc: Peter Zijlstra Cc: Will Deacon Link: http://lkml.kernel.org/r/4268febaf32f47f322c166fb2fe98cfec7041e11.1463676839.git.chris.ryder@arm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/annotate.c | 28 +++++++++++++++++++++++----- 1 file changed, 23 insertions(+), 5 deletions(-) diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index 3d9f2ca2ed2d..7e5a1e8874ce 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -354,9 +354,6 @@ static struct ins_ops nop_ops = { .scnprintf = nop__scnprintf, }; -/* - * Must be sorted by name! - */ static struct ins instructions[] = { { .name = "add", .ops = &mov_ops, }, { .name = "addl", .ops = &mov_ops, }, @@ -449,18 +446,39 @@ static struct ins instructions[] = { { .name = "xbeginq", .ops = &jump_ops, }, }; -static int ins__cmp(const void *name, const void *insp) +static int ins__key_cmp(const void *name, const void *insp) { const struct ins *ins = insp; return strcmp(name, ins->name); } +static int ins__cmp(const void *a, const void *b) +{ + const struct ins *ia = a; + const struct ins *ib = b; + + return strcmp(ia->name, ib->name); +} + +static void ins__sort(void) +{ + const int nmemb = ARRAY_SIZE(instructions); + + qsort(instructions, nmemb, sizeof(struct ins), ins__cmp); +} + static struct ins *ins__find(const char *name) { const int nmemb = ARRAY_SIZE(instructions); + static bool sorted; + + if (!sorted) { + ins__sort(); + sorted = true; + } - return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp); + return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__key_cmp); } int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym) -- 2.5.5