Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757777AbZFBBqU (ORCPT ); Mon, 1 Jun 2009 21:46:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755785AbZFBBqK (ORCPT ); Mon, 1 Jun 2009 21:46:10 -0400 Received: from hera.kernel.org ([140.211.167.34]:56240 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756216AbZFBBqJ (ORCPT ); Mon, 1 Jun 2009 21:46:09 -0400 Date: Tue, 2 Jun 2009 01:45:34 GMT From: tip-bot for Arnaldo Carvalho de Melo To: linux-tip-commits@vger.kernel.org Cc: linux-kernel@vger.kernel.org, acme@redhat.com, hpa@zytor.com, mingo@redhat.com, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, acme@redhat.com, linux-kernel@vger.kernel.org, tglx@linutronix.de, mingo@elte.hu In-Reply-To: References: Subject: [tip:perfcounters/core] perf_counter tools: Add string.[ch] Message-ID: Git-Commit-ID: ea5cc87c63b49c133d15ec2911bb2e49e8124516 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Tue, 02 Jun 2009 01:45:34 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2167 Lines: 81 Commit-ID: ea5cc87c63b49c133d15ec2911bb2e49e8124516 Gitweb: http://git.kernel.org/tip/ea5cc87c63b49c133d15ec2911bb2e49e8124516 Author: Arnaldo Carvalho de Melo AuthorDate: Mon, 1 Jun 2009 22:31:03 -0300 Committer: Ingo Molnar CommitDate: Tue, 2 Jun 2009 03:40:42 +0200 perf_counter tools: Add string.[ch] Add hex conversion libraries. We are going to replace sscanf() uses with them. Signed-off-by: Arnaldo Carvalho de Melo LKML-Reference: Signed-off-by: Ingo Molnar --- Documentation/perf_counter/util/string.c | 34 ++++++++++++++++++++++++++++++ Documentation/perf_counter/util/string.h | 8 +++++++ 2 files changed, 42 insertions(+), 0 deletions(-) diff --git a/Documentation/perf_counter/util/string.c b/Documentation/perf_counter/util/string.c new file mode 100644 index 0000000..ec33c0c --- /dev/null +++ b/Documentation/perf_counter/util/string.c @@ -0,0 +1,34 @@ +#include "string.h" + +static int hex(char ch) +{ + if ((ch >= '0') && (ch <= '9')) + return ch - '0'; + if ((ch >= 'a') && (ch <= 'f')) + return ch - 'a' + 10; + if ((ch >= 'A') && (ch <= 'F')) + return ch - 'A' + 10; + return -1; +} + +/* + * While we find nice hex chars, build a long_val. + * Return number of chars processed. + */ +int hex2u64(const char *ptr, __u64 *long_val) +{ + const char *p = ptr; + *long_val = 0; + + while (*p) { + const int hex_val = hex(*p); + + if (hex_val < 0) + break; + + *long_val = (*long_val << 4) | hex_val; + p++; + } + + return p - ptr; +} diff --git a/Documentation/perf_counter/util/string.h b/Documentation/perf_counter/util/string.h new file mode 100644 index 0000000..72812c1 --- /dev/null +++ b/Documentation/perf_counter/util/string.h @@ -0,0 +1,8 @@ +#ifndef _PERF_STRING_H_ +#define _PERF_STRING_H_ + +#include + +int hex2u64(const char *ptr, __u64 *val); + +#endif -- 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/