From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755107AbbGFQbB (ORCPT ); Mon, 6 Jul 2015 12:31:01 -0400 Received: from terminus.zytor.com ([198.137.202.10]:50219 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754669AbbGFQa4 (ORCPT ); Mon, 6 Jul 2015 12:30:56 -0400 Date: Mon, 6 Jul 2015 09:30:38 -0700 From: tip-bot for Arnaldo Carvalho de Melo Message-ID: Cc: fweisbec@gmail.com, hpa@zytor.com, dsahern@gmail.com, acme@redhat.com, eranian@google.com, tglx@linutronix.de, bp@suse.de, namhyung@kernel.org, adrian.hunter@intel.com, linux-kernel@vger.kernel.org, dzickus@redhat.com, mingo@kernel.org, jolsa@redhat.com Reply-To: eranian@google.com, tglx@linutronix.de, fweisbec@gmail.com, hpa@zytor.com, dsahern@gmail.com, acme@redhat.com, namhyung@kernel.org, mingo@kernel.org, adrian.hunter@intel.com, dzickus@redhat.com, linux-kernel@vger.kernel.org, jolsa@redhat.com, bp@suse.de To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/core] perf tools: Asprintf like functions to format integer filter expression Git-Commit-ID: 93ec4ce789995c5c58dff82193b3ec77caa8aecb X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 93ec4ce789995c5c58dff82193b3ec77caa8aecb Gitweb: http://git.kernel.org/tip/93ec4ce789995c5c58dff82193b3ec77caa8aecb Author: Arnaldo Carvalho de Melo AuthorDate: Thu, 2 Jul 2015 17:48:23 -0300 Committer: Arnaldo Carvalho de Melo CommitDate: Mon, 6 Jul 2015 10:21:46 -0300 perf tools: Asprintf like functions to format integer filter expression char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints); char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints); Example of output formatted with those functions: # ./tp_filter 6 12 2015 asprintf_expr_in_ints: id == 6 || id == 12 || id == 2015 asprintf_expr_not_in_ints: id != 6 && id != 12 && id != 2015 # It'll be used with, for instance, perf_evsel__set_filter_in_ints(), that will be used in turn to ask the kernel to filter out all raw_syscalls:* except for the ones specified by the user via: $ perf trace -e some,list,of,syscalls Cc: Adrian Hunter Cc: Borislav Petkov Cc: David Ahern Cc: Don Zickus Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Namhyung Kim Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-jt07vfp6bd8y50c05j1t7hrn@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/util/string.c | 39 +++++++++++++++++++++++++++++++++++++++ tools/perf/util/util.h | 12 ++++++++++++ 2 files changed, 51 insertions(+) diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c index 6afd610..fc8781d 100644 --- a/tools/perf/util/string.c +++ b/tools/perf/util/string.c @@ -357,3 +357,42 @@ void *memdup(const void *src, size_t len) return p; } + +char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints) +{ + /* + * FIXME: replace this with an expression using log10() when we + * find a suitable implementation, maybe the one in the dvb drivers... + * + * "%s == %d || " = log10(MAXINT) * 2 + 8 chars for the operators + */ + size_t size = nints * 28 + 1; /* \0 */ + size_t i, printed = 0; + char *expr = malloc(size); + + if (expr) { + const char *or_and = "||", *eq_neq = "=="; + char *e = expr; + + if (!in) { + or_and = "&&"; + eq_neq = "!="; + } + + for (i = 0; i < nints; ++i) { + if (printed == size) + goto out_err_overflow; + + if (i > 0) + printed += snprintf(e + printed, size - printed, " %s ", or_and); + printed += scnprintf(e + printed, size - printed, + "%s %s %d", var, eq_neq, ints[i]); + } + } + + return expr; + +out_err_overflow: + free(expr); + return NULL; +} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index 8bce58b..20d625a 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -339,4 +339,16 @@ int gzip_decompress_to_file(const char *input, int output_fd); int lzma_decompress_to_file(const char *input, int output_fd); #endif +char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints); + +static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints) +{ + return asprintf_expr_inout_ints(var, true, nints, ints); +} + +static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints) +{ + return asprintf_expr_inout_ints(var, false, nints, ints); +} + #endif /* GIT_COMPAT_UTIL_H */