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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:38 +0000 |
commit | 08b74a000942a380fe028845f92cd3a0dee827d5 (patch) | |
tree | aa78b4e12607c3e1fcce8d5cc42df4330792f118 /debian/patches-rt/0176-fs-epoll-Do-not-disable-preemption-on-RT.patch | |
parent | Adding upstream version 4.19.249. (diff) | |
download | linux-08b74a000942a380fe028845f92cd3a0dee827d5.tar.xz linux-08b74a000942a380fe028845f92cd3a0dee827d5.zip |
Adding debian version 4.19.249-2.debian/4.19.249-2debian
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | debian/patches-rt/0176-fs-epoll-Do-not-disable-preemption-on-RT.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/debian/patches-rt/0176-fs-epoll-Do-not-disable-preemption-on-RT.patch b/debian/patches-rt/0176-fs-epoll-Do-not-disable-preemption-on-RT.patch new file mode 100644 index 000000000..bf911af26 --- /dev/null +++ b/debian/patches-rt/0176-fs-epoll-Do-not-disable-preemption-on-RT.patch @@ -0,0 +1,37 @@ +From 6507a3f1c5cfe4486efb5aada6114437dd6d099f Mon Sep 17 00:00:00 2001 +From: Thomas Gleixner <tglx@linutronix.de> +Date: Fri, 8 Jul 2011 16:35:35 +0200 +Subject: [PATCH 176/347] fs/epoll: Do not disable preemption on RT +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/4.19/older/patches-4.19.246-rt110.tar.xz + +ep_call_nested() takes a sleeping lock so we can't disable preemption. +The light version is enough since ep_call_nested() doesn't mind beeing +invoked twice on the same CPU. + +Signed-off-by: Thomas Gleixner <tglx@linutronix.de> +--- + fs/eventpoll.c | 4 ++-- + 1 file changed, 2 insertions(+), 2 deletions(-) + +diff --git a/fs/eventpoll.c b/fs/eventpoll.c +index a4a32b79e832..8569db5eceb0 100644 +--- a/fs/eventpoll.c ++++ b/fs/eventpoll.c +@@ -569,12 +569,12 @@ static int ep_poll_wakeup_proc(void *priv, void *cookie, int call_nests) + + static void ep_poll_safewake(wait_queue_head_t *wq) + { +- int this_cpu = get_cpu(); ++ int this_cpu = get_cpu_light(); + + ep_call_nested(&poll_safewake_ncalls, EP_MAX_NESTS, + ep_poll_wakeup_proc, NULL, wq, (void *) (long) this_cpu); + +- put_cpu(); ++ put_cpu_light(); + } + + #else +-- +2.36.1 + |