From d22c3e0088e85be8131f7a9283f759cdbb20726d Mon Sep 17 00:00:00 2001 From: Sven Schnelle Date: Wed, 9 Sep 2026 11:29:53 +0200 Subject: selftests/ftrace: Fix unique symbol check in kprobe_non_uniq_symbol.tc The current regex also matches symbols in modules, which makes the test fail on s390 where name_show is present only once in the kernel, but also multiple times in modules: 000001b1401cdc20 t name_show 000001b0c05e6c40 t name_show [mdev] 000001b0c0495f30 t name_show [i2c_core] Fix this by changing the regular expression to only match the function name. Link: https://lore.kernel.org/all/20260909092954.2200558-1-svens@linux.ibm.com/ Fixes: 03b80ff8023a ("selftests/ftrace: Add new test case which checks non unique symbol") Signed-off-by: Sven Schnelle Reviewed-by: Steven Rostedt Signed-off-by: Masami Hiramatsu (Google) --- Documentation/ABI/testing/sysfs-kernel-mm-numa | 28 ++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-kernel-mm-numa (limited to 'Documentation/ABI/testing/sysfs-kernel-mm-numa') diff --git a/Documentation/ABI/testing/sysfs-kernel-mm-numa b/Documentation/ABI/testing/sysfs-kernel-mm-numa new file mode 100644 index 000000000..90e375ff5 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-mm-numa @@ -0,0 +1,28 @@ +What: /sys/kernel/mm/numa/ +Date: June 2021 +Contact: Linux memory management mailing list +Description: Interface for NUMA + +What: /sys/kernel/mm/numa/demotion_enabled +Date: June 2021 +Contact: Linux memory management mailing list +Description: Enable/disable demoting pages during reclaim + + Page migration during reclaim is intended for systems + with tiered memory configurations. These systems have + multiple types of memory with varied performance + characteristics instead of plain NUMA systems where + the same kind of memory is found at varied distances. + Allowing page migration during reclaim enables these + systems to migrate pages from fast tiers to slow tiers + when the fast tier is under pressure. This migration + is performed before swap if an eligible numa node is + present in cpuset.mems for the cgroup (or if cpuset v1 + is being used). If cpusets.mems changes at runtime, it + may move data to a NUMA node that does not fall into the + cpuset of the new cpusets.mems, which might be construed + to violate the guarantees of cpusets. Shared memory, + such as libraries, owned by another cgroup may still be + demoted and result in memory use on a node not present + in cpusets.mem. This should not be enabled on systems + which need strict cpuset location guarantees. -- cgit v1.3.1