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Wed, 27 May 2026 23:33:19 -0700 (PDT) Received: from csl-conti-dell7858.ntu.edu.sg ([155.69.195.57]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-841d6d60d07sm5628781b3a.0.2026.05.27.23.33.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 May 2026 23:33:18 -0700 (PDT) From: Maoyi Xie To: Thomas Gleixner , Anna-Maria Behnsen , Frederic Weisbecker , Elizabeth Figura , Arnd Bergmann , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, Maoyi Xie Subject: [PATCH 1/2] time/namespace: export init_time_ns and do_timens_ktime_to_host Date: Thu, 28 May 2026 14:33:10 +0800 Message-Id: <20260528063311.3300393-2-maoyixie.tju@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20260528063311.3300393-1-maoyixie.tju@gmail.com> References: <20260528063311.3300393-1-maoyixie.tju@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The inline timens_ktime_to_host() in compares the current time namespace against init_time_ns for the fast path. It calls do_timens_ktime_to_host() for the offset case. Both symbols are needed at link time by any caller of the inline. All current callers are in the kernel itself (timerfd, posix-timers, alarmtimer, posix-stubs, futex, io_uring). The next caller is a module (ntsync), which fails to load because neither symbol is exported. Export both with EXPORT_SYMBOL_GPL. The header already declares init_time_ns extern, so this only makes the symbols linkable from modules. Signed-off-by: Maoyi Xie --- kernel/time/namespace.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/time/namespace.c b/kernel/time/namespace.c index 4bca3f78c8ea..5fa0af66cf3f 100644 --- a/kernel/time/namespace.c +++ b/kernel/time/namespace.c @@ -57,6 +57,7 @@ ktime_t do_timens_ktime_to_host(clockid_t clockid, ktime_t tim, return tim; } +EXPORT_SYMBOL_GPL(do_timens_ktime_to_host); static struct ucounts *inc_time_namespaces(struct user_namespace *ns) { @@ -351,6 +352,7 @@ struct time_namespace init_time_ns = { .user_ns = &init_user_ns, .frozen_offsets = true, }; +EXPORT_SYMBOL_GPL(init_time_ns); void __init time_ns_init(void) { -- 2.34.1