From 0102c8c7fdfc4bd700971daff2b94470f4eafae4 Mon Sep 17 00:00:00 2001 From: Dapeng Mi Date: Thu, 17 Sep 2026 09:52:33 +0800 Subject: perf/x86/intel: Rename DMR offcore_rsp attribute to offmodule_rsp DMR introduces Offmodule Response events in place of the legacy Offcore Response events, but it still exposes the inherited offcore_rsp PMU attribute for programming the corresponding MSR data. Rename the DMR PMU attribute to offmodule_rsp so the sysfs interface matches the underlying event name and avoids user & tooling confusion. Signed-off-by: Dapeng Mi Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://patch.msgid.link/20260917015234.981153-12-dapeng1.mi@linux.intel.com --- Documentation/ABI/testing/sysfs-kernel-fadump | 59 +++++++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-kernel-fadump (limited to 'Documentation/ABI/testing/sysfs-kernel-fadump') diff --git a/Documentation/ABI/testing/sysfs-kernel-fadump b/Documentation/ABI/testing/sysfs-kernel-fadump new file mode 100644 index 000000000..b64b7622e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-kernel-fadump @@ -0,0 +1,59 @@ +What: /sys/kernel/fadump/* +Date: Dec 2019 +Contact: linuxppc-dev@lists.ozlabs.org +Description: + The /sys/kernel/fadump/* is a collection of FADump sysfs + file provide information about the configuration status + of Firmware Assisted Dump (FADump). + +What: /sys/kernel/fadump/enabled +Date: Dec 2019 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Primarily used to identify whether the FADump is enabled in + the kernel or not. +User: Kdump service + +What: /sys/kernel/fadump/registered +Date: Dec 2019 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read/write + Helps to control the dump collect feature from userspace. + Setting 1 to this file enables the system to collect the + dump and 0 to disable it. +User: Kdump service + +What: /sys/kernel/fadump/release_mem +Date: Dec 2019 +Contact: linuxppc-dev@lists.ozlabs.org +Description: write only + This is a special sysfs file and only available when + the system is booted to capture the vmcore using FADump. + It is used to release the memory reserved by FADump to + save the crash dump. + +What: /sys/kernel/fadump/mem_reserved +Date: Dec 2019 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Provide information about the amount of memory reserved by + FADump to save the crash dump in bytes. + +What: /sys/kernel/fadump/hotplug_ready +Date: Apr 2024 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read only + Kdump udev rule re-registers fadump on memory add/remove events, + primarily to update the elfcorehdr. This sysfs indicates the + kdump udev rule that fadump re-registration is not required on + memory add/remove events because elfcorehdr is now prepared in + the second/fadump kernel. +User: kexec-tools + +What: /sys/kernel/fadump/bootargs_append +Date: May 2024 +Contact: linuxppc-dev@lists.ozlabs.org +Description: read/write + This is a special sysfs file available to setup additional + parameters to be passed to capture kernel. For HASH MMU it + is exported only if RMA size higher than 768MB. -- cgit v1.3.1