Changes in 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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/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/arm64/include/asm/Kbuild

77b679453d3364688ff3e5153c0be5b2b52672b7 - Merge tag 'v6.12-rc3' into perf-tools-next

Mon, 14 Oct 2024 19:45:28 +0200

Merge tag 'v6.12-rc3' into perf-tools-nextTo get the fixes in the current perf-tools tree.Signed-off-by: Namhyung Kim List of files: /linux/arch/arm64/include/asm/Kbuild

3fd6c59042dbba50391e30862beac979491145fe - Merge tag 'v6.12-rc1' into clk-meson-next

Mon, 30 Sep 2024 11:28:07 +0200

Merge tag 'v6.12-rc1' into clk-meson-nextLinux 6.12-rc1 List of files: /linux/arch/arm64/include/asm/Kbuild

a0efa2f362a69e47b9d8b48f770ef3a0249a7911 - Merge net-next/main to resolve conflicts

Wed, 09 Oct 2024 08:59:14 +0200

Merge net-next/main to resolve conflictsThe wireless-next tree was based on something older, and thereare now conflicts between -rc2 and work here. Merge net-next,which has enough of -rc2 for the conflicts to happen, resolvingthem in the process.Signed-off-by: Johannes Berg List of files: /linux/arch/arm64/include/asm/Kbuild

b88132ceb3faccdd785809df75f9d490ebaab459 - Merge drm/drm-next into drm-xe-next

Fri, 04 Oct 2024 11:29:21 +0200

Merge drm/drm-next into drm-xe-nextBackmerging to resolve a conflict with core locally.Signed-off-by: Thomas Hellström List of files: /linux/arch/arm64/include/asm/Kbuild

2dd0ef5d951e9b565ddb324fe26c531b6a40bf82 - Merge drm/drm-next into drm-misc-next

Mon, 30 Sep 2024 10:50:54 +0200

Merge drm/drm-next into drm-misc-nextGet drm-misc-next to up v6.12-rc1.Signed-off-by: Thomas Zimmermann List of files: /linux/arch/arm64/include/asm/Kbuild

e0568571258d096f0277c74185bcbfc9cf21bccb - Merge drm/drm-next into drm-intel-next

Mon, 30 Sep 2024 10:49:10 +0200

Merge drm/drm-next into drm-intel-nextSync to v6.12-rc1.Signed-off-by: Jani Nikula List of files: /linux/arch/arm64/include/asm/Kbuild

f33e46a0c6bddd341d0989484a2546bba7ac4a3c - Merge branch 'for-6.13/wacom' into for-linus

Mon, 18 Nov 2024 21:29:33 +0100

Merge branch 'for-6.13/wacom' into for-linus- Sanitization of BTN_TOOL_RUBBER handling (Jason Gerecke) List of files: /linux/arch/arm64/include/asm/Kbuild