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71753c6ed2
Introduce a generic API for unwinding user stacks. In order to expand user space unwinding to be able to handle more complex scenarios, such as deferred unwinding and reading user space information, create a generic interface that all architectures can use that support the various unwinding methods. This is an alternative method for handling user space stack traces from the simple stack_trace_save_user() API. This does not replace that interface, but this interface will be used to expand the functionality of user space stack walking. None of the structures introduced will be exposed to user space tooling. Support for frame pointer unwinding is added. For an architecture to support frame pointer unwinding it needs to enable CONFIG_HAVE_UNWIND_USER_FP and define ARCH_INIT_USER_FP_FRAME. By encoding the frame offsets in struct unwind_user_frame, much of this code can also be reused for future unwinder implementations like sframe. Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andrii Nakryiko <andrii@kernel.org> Cc: Indu Bhagat <indu.bhagat@oracle.com> Cc: "Jose E. Marchesi" <jemarch@gnu.org> Cc: Beau Belgrave <beaub@linux.microsoft.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jens Axboe <axboe@kernel.dk> Cc: Florian Weimer <fweimer@redhat.com> Cc: Sam James <sam@gentoo.org> Link: https://lore.kernel.org/20250729182404.975790139@kernel.org Reviewed-by: Jens Remus <jremus@linux.ibm.com> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Co-developed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Link: https://lore.kernel.org/all/20250710164301.3094-2-mathieu.desnoyers@efficios.com/ Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Co-developed-by: Steven Rostedt (Google) <rostedt@goodmis.org> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
67 lines
1.7 KiB
Makefile
67 lines
1.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# asm headers that all architectures except um should have
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# (This file is not included when SRCARCH=um since UML borrows several
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# asm headers from the host architecture.)
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mandatory-y += atomic.h
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mandatory-y += archrandom.h
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mandatory-y += barrier.h
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mandatory-y += bitops.h
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mandatory-y += bug.h
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mandatory-y += cacheflush.h
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mandatory-y += cfi.h
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mandatory-y += checksum.h
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mandatory-y += compat.h
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mandatory-y += current.h
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mandatory-y += delay.h
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mandatory-y += device.h
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mandatory-y += div64.h
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mandatory-y += dma-mapping.h
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mandatory-y += dma.h
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mandatory-y += emergency-restart.h
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mandatory-y += exec.h
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mandatory-y += ftrace.h
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mandatory-y += futex.h
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mandatory-y += hardirq.h
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mandatory-y += hw_irq.h
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mandatory-y += io.h
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mandatory-y += irq.h
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mandatory-y += irq_regs.h
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mandatory-y += irq_work.h
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mandatory-y += kdebug.h
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mandatory-y += kmap_size.h
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mandatory-y += kprobes.h
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mandatory-y += linkage.h
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mandatory-y += local.h
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mandatory-y += local64.h
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mandatory-y += mmiowb.h
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mandatory-y += mmu.h
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mandatory-y += mmu_context.h
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mandatory-y += module.h
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mandatory-y += module.lds.h
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mandatory-y += msi.h
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mandatory-y += pci.h
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mandatory-y += percpu.h
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mandatory-y += pgalloc.h
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mandatory-y += preempt.h
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mandatory-y += rqspinlock.h
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mandatory-y += runtime-const.h
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mandatory-y += rwonce.h
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mandatory-y += sections.h
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mandatory-y += serial.h
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mandatory-y += shmparam.h
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mandatory-y += simd.h
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mandatory-y += softirq_stack.h
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mandatory-y += switch_to.h
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mandatory-y += timex.h
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mandatory-y += tlbflush.h
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mandatory-y += topology.h
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mandatory-y += trace_clock.h
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mandatory-y += uaccess.h
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mandatory-y += unwind_user.h
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mandatory-y += vermagic.h
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mandatory-y += vga.h
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mandatory-y += video.h
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mandatory-y += word-at-a-time.h
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mandatory-y += xor.h
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