From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 37167C3A589 for ; Thu, 15 Aug 2019 16:39:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0A21C2086C for ; Thu, 15 Aug 2019 16:39:01 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=arista.com header.i=@arista.com header.b="cc+gNkYn" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732303AbfHOQjA (ORCPT ); Thu, 15 Aug 2019 12:39:00 -0400 Received: from mail-wm1-f68.google.com ([209.85.128.68]:53806 "EHLO mail-wm1-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732240AbfHOQi5 (ORCPT ); Thu, 15 Aug 2019 12:38:57 -0400 Received: by mail-wm1-f68.google.com with SMTP id 10so1790118wmp.3 for ; Thu, 15 Aug 2019 09:38:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arista.com; s=googlenew; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=8ETIHkSYMAOTDNEv7fS406d0qKzuQO+5fSqFounTdnk=; b=cc+gNkYnBv6B6XgW4uSgGPyvgmVCpjrafee8/9+P5gekuQ+nQt9wj2EqZkRI/e/HiO CcwZq1z99OhGgCEvdUwHJQbgJtqjjYk3kmkausc3QaZ3dB42TqqqFd90zlPimVhIbrQC lcQjxqmXo5KzcjKfzzU4YuN0CWuLugpkplCCqSFCaLo72+KyGEDp0UJ+Nkr92ORWzkd9 s4roICH0YWvl5Zxx1knPXHsCq9AUgRy7+RX2qILG7YBLKKEjB9iOpulCwUWYXx24Wdxa r6ftr0uRU6AJkY2nvKKfxHutO3pi00jHMI/2ugbR4mP4waeRZ0Hs6pfAil570mggyM4R vG5A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=8ETIHkSYMAOTDNEv7fS406d0qKzuQO+5fSqFounTdnk=; b=aHj1erKCOLFrbLCpLKtFM8nBXUurCq7ffw2eQSdcVizJozs8bsB1HzcbuUIws85nEV 3I5a5jW5sNc1NnKOBkS2wIroI3B7sw+2VR7GKBckDKattaIfmUYhSZsbHmtg8hIPeGnc It3IuGg7JEFGclVB/EZ4HwCHus3YvX4S63mhuA0HFI+IGdJWfPVHss9SJCBFWDULWcUk DMwscPXGKLVANVJdtBYysttZfEN85sNdS++DNGptbQl9vqF9nxC8yodn9nA7sykRtdjm /C9wwi/b/ax62NxdhfeeUqQRQkbm6xzLL203mjezTByioQyf9rYA4JnvxVth+6I78Suj TzSg== X-Gm-Message-State: APjAAAVIBBevMknyLFOmGoeYYxk/cXn53GBoYGB0pS+oJwqU8p1kRn+2 opx4PNejXgYyuWarV3E6wNojubni7RU= X-Google-Smtp-Source: APXvYqzjAXxM6yXzyjOSjV/E5M0xSHs0/yjywHKPTIFJhx1NmnggfHCdfn1KSAMIXLqWUC1RxJIu6A== X-Received: by 2002:a1c:988a:: with SMTP id a132mr3513182wme.165.1565887135746; Thu, 15 Aug 2019 09:38:55 -0700 (PDT) Received: from Mindolluin.ire.aristanetworks.com ([217.173.96.166]) by smtp.gmail.com with ESMTPSA id f7sm5755046wrf.8.2019.08.15.09.38.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Aug 2019 09:38:55 -0700 (PDT) From: Dmitry Safonov To: linux-kernel@vger.kernel.org Cc: Dmitry Safonov <0x7f454c46@gmail.com>, Andrei Vagin , Dmitry Safonov , Adrian Reber , Andrei Vagin , Andy Lutomirski , Arnd Bergmann , Christian Brauner , Cyrill Gorcunov , "Eric W. Biederman" , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Jeff Dike , Oleg Nesterov , Pavel Emelyanov , Shuah Khan , Thomas Gleixner , Vincenzo Frascino , containers@lists.linux-foundation.org, criu@openvz.org, linux-api@vger.kernel.org, x86@kernel.org Subject: [PATCHv6 12/36] posix-timers: Make timer_settime() time namespace aware Date: Thu, 15 Aug 2019 17:38:12 +0100 Message-Id: <20190815163836.2927-13-dima@arista.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190815163836.2927-1-dima@arista.com> References: <20190815163836.2927-1-dima@arista.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Andrei Vagin Wire timer_settime() syscall into time namespace virtualization. sys_timer_settime() calls the ktime->timer_set() callback. Right now, common_timer_set() is the only implementation for the callback. There user-supplied timer's value is converted from timespec64 to ktime and then timens_ktime_to_host() can be used to convert namespace's time to the host time. Inside a time namespace kernel's time differ on a fixed offset from a user-supplied, but only absolute values (TIMER_ABSTIME) must be converted. Signed-off-by: Andrei Vagin Co-developed-by: Dmitry Safonov Signed-off-by: Dmitry Safonov --- kernel/time/posix-timers.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/time/posix-timers.c b/kernel/time/posix-timers.c index 365ac40d46b1..1f30e3ef0918 100644 --- a/kernel/time/posix-timers.c +++ b/kernel/time/posix-timers.c @@ -891,6 +891,8 @@ int common_timer_set(struct k_itimer *timr, int flags, timr->it_interval = timespec64_to_ktime(new_setting->it_interval); expires = timespec64_to_ktime(new_setting->it_value); + if (flags & TIMER_ABSTIME) + expires = timens_ktime_to_host(timr->it_clock, expires); sigev_none = timr->it_sigev_notify == SIGEV_NONE; kc->timer_arm(timr, expires, flags & TIMER_ABSTIME, sigev_none); -- 2.22.0