Hello RT Folks! I'm pleased to announce the 5.4.109-rt56 stable release. You can get this release via the git tree at: git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-stable-rt.git branch: v5.4-rt Head SHA1: a84a83ce44cafc96cb9cf419378a713dcdea00ac Or to build 5.4.109-rt56 directly, the following patches should be applied: https://www.kernel.org/pub/linux/kernel/v5.x/linux-5.4.tar.xz https://www.kernel.org/pub/linux/kernel/v5.x/patch-5.4.109.xz https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/patch-5.4.109-rt56.patch.xz You can also build from 5.4.109-rt55 by applying the incremental patch: https://www.kernel.org/pub/linux/kernel/projects/rt/5.4/incr/patch-5.4.109-rt55-rt56.patch.xz Enjoy! Tom Changes from v5.4.109-rt55: --- Sebastian Andrzej Siewior (1): mm: slub: Don't resize the location tracking cache on PREEMPT_RT Tom Zanussi (1): Linux 5.4.109-rt56 --- localversion-rt | 2 +- mm/slub.c | 3 +++ 2 files changed, 4 insertions(+), 1 deletion(-) --- diff --git a/localversion-rt b/localversion-rt index 51b05e9abe6f..fdb0f880c7e9 100644 --- a/localversion-rt +++ b/localversion-rt @@ -1 +1 @@ --rt55 +-rt56 diff --git a/mm/slub.c b/mm/slub.c index 1815e28852fe..0d78368d149a 100644 --- a/mm/slub.c +++ b/mm/slub.c @@ -4647,6 +4647,9 @@ static int alloc_loc_track(struct loc_track *t, unsigned long max, gfp_t flags) struct location *l; int order; + if (IS_ENABLED(CONFIG_PREEMPT_RT) && flags == GFP_ATOMIC) + return 0; + order = get_order(sizeof(struct location) * max); l = (void *)__get_free_pages(flags, order);
