From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 03 Jan 2022 13:04:36 +0100 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1n4M4q-009nyl-9k for lore@lore.pengutronix.de; Mon, 03 Jan 2022 13:04:36 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:e::133]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1n4M4p-0004o7-3a for lore@pengutronix.de; Mon, 03 Jan 2022 13:04:35 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=DrcbHW+AJ1DJ2S6a0pal2H81bBoXyvA9hPeNRc8kJMI=; b=sBpl2GxOS+tD/s IS3t9pr+l7O79lQ4aWeKOvDZzciwJxhlDKPGJwMaqcaCPH8UDhyIVtUpy7eqqsqqkt2tvKbe/TeQB 1bFhx+xmQuBiBMHzOHO4ziSPeF3gSlG2U01GZeLS12IkCTJsslGcU4hHxuZqcNzxBB5bOqOymCQX/ p/RTaLEeuWsXppw97HEu9Ls02I+Dyyxda0FTXVhk/WyPlryVMUAzrAt9M/j0ayUYe9S4iyzMTslUO XbxuOVug/3uBjUeoR7wRzO6Jox7Y3ulHaU6IOFy1GilNqPRZ/wsbDGlQdsJbyKJOEVSFtAIxMbma7 Eu/i8g09WzSDj5IxGumQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1n4M3Z-008xSX-Ku; Mon, 03 Jan 2022 12:03:17 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1n4M3U-008xRl-NZ for barebox@lists.infradead.org; Mon, 03 Jan 2022 12:03:13 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1n4M3T-0004gr-BP; Mon, 03 Jan 2022 13:03:11 +0100 Received: from afa by dude.hi.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1n4M3S-007FpC-Sw; Mon, 03 Jan 2022 13:03:10 +0100 From: Ahmad Fatoum To: barebox@lists.infradead.org Cc: Ahmad Fatoum Date: Mon, 3 Jan 2022 13:03:10 +0100 Message-Id: <20220103120310.1729050-1-a.fatoum@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220103_040312_785697_D6791D02 X-CRM114-Status: GOOD ( 11.11 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:e::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.ext.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.8 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH] commands: time: add -n option for nanoseconds output X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.ext.pengutronix.de) The current millisecond output may be too coarse for debugging timing of barebox functionality. Add an optional nanosecond output. Signed-off-by: Ahmad Fatoum --- commands/time.c | 21 ++++++++++++++------- 1 file changed, 14 insertions(+), 7 deletions(-) diff --git a/commands/time.c b/commands/time.c index 25ba2da15ed5..2d9fb75e7a8c 100644 --- a/commands/time.c +++ b/commands/time.c @@ -9,7 +9,7 @@ static int do_time(int argc, char *argv[]) int i; unsigned char *buf; u64 start, end, diff64; - unsigned long diff; + bool nanoseconds = false; int len = 1; /* '\0' */ if (argc < 2) @@ -20,7 +20,13 @@ static int do_time(int argc, char *argv[]) buf = xzalloc(len); - for (i = 1; i < argc; i++) { + i = 1; + if (!strcmp(argv[i], "-n")) { + nanoseconds = true; + i++; + } + + for (; i < argc; i++) { strcat(buf, argv[i]); strcat(buf, " "); } @@ -33,11 +39,10 @@ static int do_time(int argc, char *argv[]) diff64 = end - start; - do_div(diff64, 1000000); - - diff = diff64; + if (!nanoseconds) + do_div(diff64, 1000000); - printf("time: %lums\n", diff); + printf("time: %llu%cs\n", diff64, nanoseconds ? 'n' : 'm'); free(buf); @@ -47,12 +52,14 @@ static int do_time(int argc, char *argv[]) BAREBOX_CMD_HELP_START(time) BAREBOX_CMD_HELP_TEXT("Note: This command depends on COMMAND being interruptible,") BAREBOX_CMD_HELP_TEXT("otherwise the timer may overrun resulting in incorrect results") +BAREBOX_CMD_HELP_TEXT("Options:") +BAREBOX_CMD_HELP_OPT ("-n", "output elapsed time in nanoseconds") BAREBOX_CMD_HELP_END BAREBOX_CMD_START(time) .cmd = do_time, BAREBOX_CMD_DESC("measure execution duration of a command") - BAREBOX_CMD_OPTS("COMMAND") + BAREBOX_CMD_OPTS("[-n] COMMAND") BAREBOX_CMD_GROUP(CMD_GRP_MISC) BAREBOX_CMD_HELP(cmd_time_help) BAREBOX_CMD_END -- 2.30.2 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox