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Florent Revest f5997d173c samples: ftrace: Save required argument registers in sample trampolines 
commit 8564c31587 upstream.

The ftrace-direct-too sample traces the handle_mm_fault function whose
signature changed since the introduction of the sample. Since:
commit bce617edec ("mm: do page fault accounting in handle_mm_fault")
handle_mm_fault now has 4 arguments. Therefore, the sample trampoline
should save 4 argument registers.

s390 saves all argument registers already so it does not need a change
but x86_64 needs an extra push and pop.

This also evolves the signature of the tracing function to make it
mirror the signature of the traced function.

Link: https://lkml.kernel.org/r/20230427140700.625241-2-revest@chromium.org

Cc: stable@vger.kernel.org
Fixes: bce617edec ("mm: do page fault accounting in handle_mm_fault")
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-07-23 13:54:09 +02:00
arch s390/decompressor: fix misaligned symbol build error 2023-07-23 13:54:08 +02:00
block
certs
crypto
Documentation media: uapi: Fix [GS]_ROUTING ACTIVE flag value 2023-07-23 13:54:08 +02:00
drivers nvme: don't reject probe due to duplicate IDs for single-ported PCIe devices 2023-07-23 13:54:09 +02:00
fs ceph: don't let check_caps skip sending responses for revoke msgs 2023-07-23 13:54:06 +02:00
include Revert "8250: add support for ASIX devices with a FIFO bug" 2023-07-23 13:54:08 +02:00
init
io_uring
ipc
kernel tracing: Fix memory leak of iter->temp when reading trace_pipe 2023-07-23 13:54:09 +02:00
lib
LICENSES
mm mm/mmap: Fix error return in do_vmi_align_munmap() 2023-07-23 13:53:57 +02:00
net libceph: harden msgr2.1 frame segment length checks 2023-07-23 13:54:06 +02:00
rust
samples samples: ftrace: Save required argument registers in sample trampolines 2023-07-23 13:54:09 +02:00
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README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.