Changes in Kbuild

2c142b63c8ee982cdfdba49a616027c266294838 - Merge tag 'asoc-fix-v7.1-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

Thu, 28 May 2026 13:48:04 +0200

Merge tag 'asoc-fix-v7.1-rc5' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linusASoC: Fixes for v7.1This round of fixes is mostly Sirini's Qualcomm cleanups that have beenin review for a while, we also have a couple of small fixes from Cássio. List of files: /linux/arch/riscv/include/asm/Kbuild

37f32d5ab83968d63cfba6092ecaae3e582db964 - Merge tag 'kvm-s390-master-7.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

Sat, 23 May 2026 10:03:58 +0200

Merge tag 'kvm-s390-master-7.1-2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEADKVM: s390: some vSIE and UCONTROL fixesFix some memory issues and some hangs in vSIE. List of files: /linux/arch/riscv/include/asm/Kbuild

7acfa2c5f4366d63653380646ffa7dbd1bfaccc0 - Merge tag 'trace-ringbuffer-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Thu, 21 May 2026 23:05:09 +0200

Merge tag 'trace-ringbuffer-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracePull ring-buffer fixes from Steven Rostedt: - Fix reporting MISSED EVENTS in trace iterator When the "trace" file is read with tracing enabled, if the writer were to pass the iterator reader, it resets, sets a "missed_events" flag and continues. The tracing output checks for missed events and if there are some, it prints out "[LOST EVENTS]" to let the user know events were dropped. But the clearing of the missed_events happened when the tracing system queried the ring buffer iterator about missed events. This was premature as the ring buffer is per CPU, and the tracing code reads all the CPU buffers and checks for missed events when it is read. If the CPU iterator that had missed events isn't printed next, the output for the LOST EVENTS is lost. Clear the missed_events flag when the iterator moves to the next event and not when the missed_events flag is queried. Also clear it on reset. - Flush and stop the persistent ring buffer on panic On panic the persistent ring buffer is used to debug what caused the panic. But on some architectures, it requires flushing the memory from cache, otherwise, the ring buffer persistent memory may not have the last events and this could also cause the ring buffer to be corrupted on the next boot. - Fix nr_subbufs initialization in simple_ring_buffer_init_mm The remote simple ring buffer meta data nr_subbufs is initialized too early and gets cleared later on, making it zero and not reflect the actual number of sub-buffers. - Fix unload_page for simple_ring_buffer init rollback On error, the pages loaded need to be unloaded. To unload a page it is expected that: page = load_page(va); -> unload_page(page). But the code was doing: unload_page(va) and not unload_page(page). - Create output file from cmd_check_undefined The check for undefined symbols checks if the file *.o.checked exists and if so it skips doing the work. But the *.o.checked file never was created making every build do the work even when it was already done previously.* tag 'trace-ringbuffer-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: tracing: Create output file from cmd_check_undefined tracing: Fix unload_page for simple_ring_buffer init rollback tracing: Fix nr_subbufs initialization in simple_ring_buffer_init_mm() ring-buffer: Flush and stop persistent ring buffer on panic ring-buffer: Fix reporting of missed events in iterator List of files: /linux/arch/riscv/include/asm/Kbuild

a494d3c8d5392bcdff83c2a593df0c160ff9f322 - ring-buffer: Flush and stop persistent ring buffer on panic

Thu, 30 Apr 2026 05:28:16 +0200

ring-buffer: Flush and stop persistent ring buffer on panicOn real hardware, panic and machine reboot may not flush hardware cacheto memory. This means the persistent ring buffer, which relies on acoherent state of memory, may not have its events written to the bufferand they may be lost. Moreover, there may be inconsistency with thecounters which are used for validation of the integrity of thepersistent ring buffer which may cause all data to be discarded.To avoid this issue, stop recording of the ring buffer on panic andflush the cache of the ring buffer's memory.Fixes: e645535a954a ("tracing: Add option to use memmapped memory for trace boot instance")Cc: stable@vger.kernel.orgCc: Will Deacon Cc: Mathieu Desnoyers Cc: Ian Rogers Link: https://patch.msgid.link/177751969602.2136606.12031934362587643488.stgit@mhiramat.tok.corp.google.comSigned-off-by: Masami Hiramatsu (Google) Acked-by: Catalin Marinas Acked-by: Geert Uytterhoeven Signed-off-by: Steven Rostedt List of files: /linux/arch/riscv/include/asm/Kbuild

1260ed77798502de9c98020040d2995008de10cc - Merge drm/drm-fixes into drm-misc-fixes

Tue, 08 Apr 2025 10:15:47 +0200

Merge drm/drm-fixes into drm-misc-fixesBackmerging to get updates from v6.15-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/arch/riscv/include/asm/Kbuild

946661e3bef8efa11ba8079d4ebafe6fc3b0aaad - Merge branch 'next' into for-linus

Sat, 05 Apr 2025 08:04:35 +0200

Merge branch 'next' into for-linusPrepare input updates for 6.15 merge window. List of files: /linux/arch/riscv/include/asm/Kbuild

0b119045b79a672bc6d8f18641c60fc8ce1b4585 - Merge tag 'v6.14-rc4' into next

Wed, 26 Feb 2025 01:03:25 +0100

Merge tag 'v6.14-rc4' into nextSync up with the mainline. List of files: /linux/arch/riscv/include/asm/Kbuild

9e676a024fa1fa2bd8150c2d2ba85478280353bc - Merge tag 'v6.14-rc1' into perf-tools-next

Wed, 05 Feb 2025 23:57:18 +0100

Merge tag 'v6.14-rc1' into perf-tools-nextTo get the various fixes in the current master.Signed-off-by: Namhyung Kim List of files: /linux/arch/riscv/include/asm/Kbuild

0410c6121529409b08e81a77ae3ee58c657e2243 - Merge drm/drm-next into drm-xe-next

Fri, 28 Feb 2025 15:54:14 +0100

Merge drm/drm-next into drm-xe-nextSync to fix conlicts between drm-xe-next and drm-intel-next.Signed-off-by: Lucas De Marchi List of files: /linux/arch/riscv/include/asm/Kbuild

93c7dd1b39444ebd5a6a98e56a363d7a4e646775 - Merge drm/drm-next into drm-misc-next

Thu, 06 Feb 2025 13:47:32 +0100

Merge drm/drm-next into drm-misc-nextBring rc1 to start the new release dev.Signed-off-by: Maxime Ripard List of files: /linux/arch/riscv/include/asm/Kbuild

ea9f8f2b21795a5d80418a655bcb212d5b89e08f - Merge drm/drm-next into drm-intel-next

Wed, 05 Feb 2025 18:12:37 +0100

Merge drm/drm-next into drm-intel-nextSync with v6.14-rc1.Signed-off-by: Jani Nikula List of files: /linux/arch/riscv/include/asm/Kbuild

c771600c6af14749609b49565ffb4cac2959710d - Merge drm/drm-next into drm-intel-gt-next

Wed, 05 Feb 2025 10:29:14 +0100

Merge drm/drm-next into drm-intel-gt-nextWe need4ba4f1afb6a9 ("perf: Generic hotplug support for a PMU with a scope")in order to land a i915 PMU simplification and a fix. That landed in 6.12and we are stuck at 6.9 so lets bump things forward.Signed-off-by: Tvrtko Ursulin List of files: /linux/arch/riscv/include/asm/Kbuild

f49040c7aaa5532a1f94355ef5073c49e6b32349 - Merge branch 'for-6.15-console-suspend-api-cleanup' into for-linus

Thu, 27 Mar 2025 11:09:34 +0100

Merge branch 'for-6.15-console-suspend-api-cleanup' into for-linus List of files: /linux/arch/riscv/include/asm/Kbuild

60675d4ca1ef0857e44eba5849b74a3a998d0c0f - Merge branch 'linus' into x86/mm, to pick up fixes

Fri, 20 Dec 2024 10:25:44 +0100

Merge branch 'linus' into x86/mm, to pick up fixesSigned-off-by: Ingo Molnar List of files: /linux/arch/riscv/include/asm/Kbuild

25768de50b1f2dbb6ea44bd5148a87fe2c9c3688 - Merge branch 'next' into for-linus

Tue, 21 Jan 2025 06:37:39 +0100

Merge branch 'next' into for-linusPrepare input updates for 6.14 merge window. List of files: /linux/arch/riscv/include/asm/Kbuild

670af65d2ab4a6a9bb72f014b080757e291ad3fe - Merge branch 'for-6.14/constify-bin-attribute' into for-linus

Mon, 20 Jan 2025 09:58:12 +0100

Merge branch 'for-6.14/constify-bin-attribute' into for-linus- constification of 'struct bin_attribute' in various HID driver (Thomas Weißschuh) List of files: /linux/arch/riscv/include/asm/Kbuild

6d4a0f4ea72319c9a37c1a7191695467006dd272 - Merge tag 'v6.13-rc3' into next

Tue, 17 Dec 2024 18:40:45 +0100

Merge tag 'v6.13-rc3' into nextSync up with the mainline. List of files: /linux/arch/riscv/include/asm/Kbuild

2e04247f7cce8b8cd8381a29078701691fec684d - Merge tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Wed, 22 Jan 2025 00:15:28 +0100

Merge tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-tracePull ftrace updates from Steven Rostedt: - Have fprobes built on top of function graph infrastructure The fprobe logic is an optimized kprobe that uses ftrace to attach to functions when a probe is needed at the start or end of the function. The fprobe and kretprobe logic implements a similar method as the function graph tracer to trace the end of the function. That is to hijack the return address and jump to a trampoline to do the trace when the function exits. To do this, a shadow stack needs to be created to store the original return address. Fprobes and function graph do this slightly differently. Fprobes (and kretprobes) has slots per callsite that are reserved to save the return address. This is fine when just a few points are traced. But users of fprobes, such as BPF programs, are starting to add many more locations, and this method does not scale. The function graph tracer was created to trace all functions in the kernel. In order to do this, when function graph tracing is started, every task gets its own shadow stack to hold the return address that is going to be traced. The function graph tracer has been updated to allow multiple users to use its infrastructure. Now have fprobes be one of those users. This will also allow for the fprobe and kretprobe methods to trace the return address to become obsolete. With new technologies like CFI that need to know about these methods of hijacking the return address, going toward a solution that has only one method of doing this will make the kernel less complex. - Cleanup with guard() and free() helpers There were several places in the code that had a lot of "goto out" in the error paths to either unlock a lock or free some memory that was allocated. But this is error prone. Convert the code over to use the guard() and free() helpers that let the compiler unlock locks or free memory when the function exits. - Remove disabling of interrupts in the function graph tracer When function graph tracer was first introduced, it could race with interrupts and NMIs. To prevent that race, it would disable interrupts and not trace NMIs. But the code has changed to allow NMIs and also interrupts. This change was done a long time ago, but the disabling of interrupts was never removed. Remove the disabling of interrupts in the function graph tracer is it is not needed. This greatly improves its performance. - Allow the :mod: command to enable tracing module functions on the kernel command line. The function tracer already has a way to enable functions to be traced in modules by writing ":mod:" into set_ftrace_filter. That will enable either all the functions for the module if it is loaded, or if it is not, it will cache that command, and when the module is loaded that matches , its functions will be enabled. This also allows init functions to be traced. But currently events do not have that feature. Because enabling function tracing can be done very early at boot up (before scheduling is enabled), the commands that can be done when function tracing is started is limited. Having the ":mod:" command to trace module functions as they are loaded is very useful. Update the kernel command line function filtering to allow it.* tag 'ftrace-v6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace: (26 commits) ftrace: Implement :mod: cache filtering on kernel command line tracing: Adopt __free() and guard() for trace_fprobe.c bpf: Use ftrace_get_symaddr() for kprobe_multi probes ftrace: Add ftrace_get_symaddr to convert fentry_ip to symaddr Documentation: probes: Update fprobe on function-graph tracer selftests/ftrace: Add a test case for repeating register/unregister fprobe selftests: ftrace: Remove obsolate maxactive syntax check tracing/fprobe: Remove nr_maxactive from fprobe fprobe: Add fprobe_header encoding feature fprobe: Rewrite fprobe on function-graph tracer s390/tracing: Enable HAVE_FTRACE_GRAPH_FUNC ftrace: Add CONFIG_HAVE_FTRACE_GRAPH_FUNC bpf: Enable kprobe_multi feature if CONFIG_FPROBE is enabled tracing/fprobe: Enable fprobe events with CONFIG_DYNAMIC_FTRACE_WITH_ARGS tracing: Add ftrace_fill_perf_regs() for perf event tracing: Add ftrace_partial_regs() for converting ftrace_regs to pt_regs fprobe: Use ftrace_regs in fprobe exit handler fprobe: Use ftrace_regs in fprobe entry handler fgraph: Pass ftrace_regs to retfunc fgraph: Replace fgraph_ret_regs with ftrace_regs ... List of files: /linux/arch/riscv/include/asm/Kbuild

c5fb51b71788926feef0d07f30c8af1d5e4af1a6 - Merge remote-tracking branch 'pm/opp/linux-next' into HEAD

Fri, 03 Jan 2025 16:13:45 +0100

Merge remote-tracking branch 'pm/opp/linux-next' into HEADMerge pm/opp tree to get dev_pm_opp_get_bw()Signed-off-by: Rob Clark List of files: /linux/arch/riscv/include/asm/Kbuild

b5fa903b7f7c7ffc07430d1380936f72aaf09068 - fprobe: Add fprobe_header encoding feature

Thu, 26 Dec 2024 06:14:17 +0100

fprobe: Add fprobe_header encoding featureFprobe store its data structure address and size on the fgraph return stackby __fprobe_header. But most 64bit architecture can combine those toone unsigned long value because 4 MSB in the kernel address are the same.With this encoding, fprobe can consume less space on ret_stack.This introduces asm/fprobe.h to define arch dependent encode/decodemacros. Note that since fprobe depends on CONFIG_HAVE_FUNCTION_GRAPH_FREGS,currently only arm64, loongarch, riscv, s390 and x86 are supported.Signed-off-by: Masami Hiramatsu (Google) Acked-by: Heiko Carstens # s390Cc: Catalin Marinas Cc: Alexei Starovoitov Cc: Florent Revest Cc: Martin KaFai Lau Cc: bpf Cc: Alexei Starovoitov Cc: Jiri Olsa Cc: Alan Maguire Cc: Mark Rutland Cc: Heiko Carstens Cc: Will Deacon Cc: Huacai Chen Cc: WANG Xuerui Cc: Paul Walmsley Cc: Palmer Dabbelt Cc: Albert Ou Cc: Vasily Gorbik Cc: Alexander Gordeev Cc: Christian Borntraeger Cc: Sven Schnelle Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov Cc: Dave Hansen Cc: x86@kernel.orgCc: "H. Peter Anvin" Cc: Arnd Bergmann Cc: Masami Hiramatsu Cc: Mathieu Desnoyers Link: https://lore.kernel.org/173519005783.391279.5307910947400277525.stgit@devnote2Signed-off-by: Steven Rostedt (Google) List of files: /linux/arch/riscv/include/asm/Kbuild