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Mainly singleton patches all over the place. Series of note are:
- updates to scripts/gdb from Glenn Washburn - kexec cleanups from Bjorn Helgaas -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCZEr+6wAKCRDdBJ7gKXxA jn4NAP4u/hj/kR2dxYehcVLuQqJspCRZZBZlAReFJyHNQO6voAEAk0NN9rtG2+/E r0G29CJhK+YL0W6mOs8O1yo9J1rZnAM= =2CUV -----END PGP SIGNATURE----- Merge tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull non-MM updates from Andrew Morton: "Mainly singleton patches all over the place. Series of note are: - updates to scripts/gdb from Glenn Washburn - kexec cleanups from Bjorn Helgaas" * tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (50 commits) mailmap: add entries for Paul Mackerras libgcc: add forward declarations for generic library routines mailmap: add entry for Oleksandr ocfs2: reduce ioctl stack usage fs/proc: add Kthread flag to /proc/$pid/status ia64: fix an addr to taddr in huge_pte_offset() checkpatch: introduce proper bindings license check epoll: rename global epmutex scripts/gdb: add GDB convenience functions $lx_dentry_name() and $lx_i_dentry() scripts/gdb: create linux/vfs.py for VFS related GDB helpers uapi/linux/const.h: prefer ISO-friendly __typeof__ delayacct: track delays from IRQ/SOFTIRQ scripts/gdb: timerlist: convert int chunks to str scripts/gdb: print interrupts scripts/gdb: raise error with reduced debugging information scripts/gdb: add a Radix Tree Parser lib/rbtree: use '+' instead of '|' for setting color. proc/stat: remove arch_idle_time() checkpatch: check for misuse of the link tags checkpatch: allow Closes tags with links ...
This commit is contained in:
Linus Torvalds
commit
33afd4b763
3
.mailmap
3
.mailmap
@ -360,6 +360,7 @@ Nicolas Pitre <nico@fluxnic.net> <nico@linaro.org>
|
||||
Nicolas Saenz Julienne <nsaenz@kernel.org> <nsaenzjulienne@suse.de>
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Nicolas Saenz Julienne <nsaenz@kernel.org> <nsaenzjulienne@suse.com>
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Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
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Oleksandr Natalenko <oleksandr@natalenko.name> <oleksandr@redhat.com>
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Oleksij Rempel <linux@rempel-privat.de> <bug-track@fisher-privat.net>
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Oleksij Rempel <linux@rempel-privat.de> <external.Oleksij.Rempel@de.bosch.com>
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Oleksij Rempel <linux@rempel-privat.de> <fixed-term.Oleksij.Rempel@de.bosch.com>
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@ -375,6 +376,8 @@ Paul E. McKenney <paulmck@kernel.org> <paul.mckenney@linaro.org>
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Paul E. McKenney <paulmck@kernel.org> <paulmck@linux.ibm.com>
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Paul E. McKenney <paulmck@kernel.org> <paulmck@linux.vnet.ibm.com>
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Paul E. McKenney <paulmck@kernel.org> <paulmck@us.ibm.com>
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Paul Mackerras <paulus@ozlabs.org> <paulus@samba.org>
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Paul Mackerras <paulus@ozlabs.org> <paulus@au1.ibm.com>
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Peter A Jonsson <pj@ludd.ltu.se>
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Peter Oruba <peter.oruba@amd.com>
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Peter Oruba <peter@oruba.de>
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@ -16,6 +16,7 @@ d) memory reclaim
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e) thrashing
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f) direct compact
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g) write-protect copy
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h) IRQ/SOFTIRQ
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and makes these statistics available to userspace through
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the taskstats interface.
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@ -49,7 +50,7 @@ this structure. See
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for a description of the fields pertaining to delay accounting.
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It will generally be in the form of counters returning the cumulative
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delay seen for cpu, sync block I/O, swapin, memory reclaim, thrash page
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cache, direct compact, write-protect copy etc.
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cache, direct compact, write-protect copy, IRQ/SOFTIRQ etc.
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Taking the difference of two successive readings of a given
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counter (say cpu_delay_total) for a task will give the delay
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@ -109,17 +110,19 @@ Get sum of delays, since system boot, for all pids with tgid 5::
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CPU count real total virtual total delay total delay average
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8 7000000 6872122 3382277 0.423ms
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IO count delay total delay average
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0 0 0ms
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0 0 0.000ms
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SWAP count delay total delay average
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0 0 0ms
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0 0 0.000ms
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RECLAIM count delay total delay average
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0 0 0ms
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0 0 0.000ms
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THRASHING count delay total delay average
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0 0 0ms
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0 0 0.000ms
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COMPACT count delay total delay average
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0 0 0ms
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WPCOPY count delay total delay average
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0 0 0ms
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0 0 0.000ms
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WPCOPY count delay total delay average
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0 0 0.000ms
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IRQ count delay total delay average
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0 0 0.000ms
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Get IO accounting for pid 1, it works only with -p::
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@ -1,42 +1,50 @@
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kcov: code coverage for fuzzing
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KCOV: code coverage for fuzzing
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===============================
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kcov exposes kernel code coverage information in a form suitable for coverage-
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guided fuzzing (randomized testing). Coverage data of a running kernel is
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exported via the "kcov" debugfs file. Coverage collection is enabled on a task
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basis, and thus it can capture precise coverage of a single system call.
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KCOV collects and exposes kernel code coverage information in a form suitable
|
||||
for coverage-guided fuzzing. Coverage data of a running kernel is exported via
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the ``kcov`` debugfs file. Coverage collection is enabled on a task basis, and
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thus KCOV can capture precise coverage of a single system call.
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|
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Note that kcov does not aim to collect as much coverage as possible. It aims
|
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to collect more or less stable coverage that is function of syscall inputs.
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To achieve this goal it does not collect coverage in soft/hard interrupts
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and instrumentation of some inherently non-deterministic parts of kernel is
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disabled (e.g. scheduler, locking).
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Note that KCOV does not aim to collect as much coverage as possible. It aims
|
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to collect more or less stable coverage that is a function of syscall inputs.
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To achieve this goal, it does not collect coverage in soft/hard interrupts
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(unless remove coverage collection is enabled, see below) and from some
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inherently non-deterministic parts of the kernel (e.g. scheduler, locking).
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kcov is also able to collect comparison operands from the instrumented code
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(this feature currently requires that the kernel is compiled with clang).
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Besides collecting code coverage, KCOV can also collect comparison operands.
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See the "Comparison operands collection" section for details.
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|
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Besides collecting coverage data from syscall handlers, KCOV can also collect
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coverage for annotated parts of the kernel executing in background kernel
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tasks or soft interrupts. See the "Remote coverage collection" section for
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details.
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Prerequisites
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||||
-------------
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||||
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Configure the kernel with::
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KCOV relies on compiler instrumentation and requires GCC 6.1.0 or later
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or any Clang version supported by the kernel.
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Collecting comparison operands is supported with GCC 8+ or with Clang.
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To enable KCOV, configure the kernel with::
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CONFIG_KCOV=y
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CONFIG_KCOV requires gcc 6.1.0 or later.
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|
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If the comparison operands need to be collected, set::
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To enable comparison operands collection, set::
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CONFIG_KCOV_ENABLE_COMPARISONS=y
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Profiling data will only become accessible once debugfs has been mounted::
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Coverage data only becomes accessible once debugfs has been mounted::
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mount -t debugfs none /sys/kernel/debug
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Coverage collection
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||||
-------------------
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The following program demonstrates coverage collection from within a test
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program using kcov:
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The following program demonstrates how to use KCOV to collect coverage for a
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single syscall from within a test program:
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.. code-block:: c
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@ -84,7 +92,7 @@ program using kcov:
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perror("ioctl"), exit(1);
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/* Reset coverage from the tail of the ioctl() call. */
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__atomic_store_n(&cover[0], 0, __ATOMIC_RELAXED);
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/* That's the target syscal call. */
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/* Call the target syscall call. */
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read(-1, NULL, 0);
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/* Read number of PCs collected. */
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n = __atomic_load_n(&cover[0], __ATOMIC_RELAXED);
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@ -103,7 +111,7 @@ program using kcov:
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return 0;
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}
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After piping through addr2line output of the program looks as follows::
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After piping through ``addr2line`` the output of the program looks as follows::
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SyS_read
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fs/read_write.c:562
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@ -121,12 +129,13 @@ After piping through addr2line output of the program looks as follows::
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fs/read_write.c:562
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If a program needs to collect coverage from several threads (independently),
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it needs to open /sys/kernel/debug/kcov in each thread separately.
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it needs to open ``/sys/kernel/debug/kcov`` in each thread separately.
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The interface is fine-grained to allow efficient forking of test processes.
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That is, a parent process opens /sys/kernel/debug/kcov, enables trace mode,
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mmaps coverage buffer and then forks child processes in a loop. Child processes
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only need to enable coverage (disable happens automatically on thread end).
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That is, a parent process opens ``/sys/kernel/debug/kcov``, enables trace mode,
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mmaps coverage buffer, and then forks child processes in a loop. The child
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processes only need to enable coverage (it gets disabled automatically when
|
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a thread exits).
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Comparison operands collection
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------------------------------
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@ -205,52 +214,78 @@ Comparison operands collection is similar to coverage collection:
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return 0;
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}
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Note that the kcov modes (coverage collection or comparison operands) are
|
||||
mutually exclusive.
|
||||
Note that the KCOV modes (collection of code coverage or comparison operands)
|
||||
are mutually exclusive.
|
||||
|
||||
Remote coverage collection
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||||
--------------------------
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|
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With KCOV_ENABLE coverage is collected only for syscalls that are issued
|
||||
from the current process. With KCOV_REMOTE_ENABLE it's possible to collect
|
||||
coverage for arbitrary parts of the kernel code, provided that those parts
|
||||
are annotated with kcov_remote_start()/kcov_remote_stop().
|
||||
Besides collecting coverage data from handlers of syscalls issued from a
|
||||
userspace process, KCOV can also collect coverage for parts of the kernel
|
||||
executing in other contexts - so-called "remote" coverage.
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||||
|
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This allows to collect coverage from two types of kernel background
|
||||
threads: the global ones, that are spawned during kernel boot in a limited
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||||
number of instances (e.g. one USB hub_event() worker thread is spawned per
|
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USB HCD); and the local ones, that are spawned when a user interacts with
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||||
some kernel interface (e.g. vhost workers); as well as from soft
|
||||
interrupts.
|
||||
Using KCOV to collect remote coverage requires:
|
||||
|
||||
To enable collecting coverage from a global background thread or from a
|
||||
softirq, a unique global handle must be assigned and passed to the
|
||||
corresponding kcov_remote_start() call. Then a userspace process can pass
|
||||
a list of such handles to the KCOV_REMOTE_ENABLE ioctl in the handles
|
||||
array field of the kcov_remote_arg struct. This will attach the used kcov
|
||||
device to the code sections, that are referenced by those handles.
|
||||
1. Modifying kernel code to annotate the code section from where coverage
|
||||
should be collected with ``kcov_remote_start`` and ``kcov_remote_stop``.
|
||||
|
||||
Since there might be many local background threads spawned from different
|
||||
userspace processes, we can't use a single global handle per annotation.
|
||||
Instead, the userspace process passes a non-zero handle through the
|
||||
common_handle field of the kcov_remote_arg struct. This common handle gets
|
||||
saved to the kcov_handle field in the current task_struct and needs to be
|
||||
passed to the newly spawned threads via custom annotations. Those threads
|
||||
should in turn be annotated with kcov_remote_start()/kcov_remote_stop().
|
||||
2. Using ``KCOV_REMOTE_ENABLE`` instead of ``KCOV_ENABLE`` in the userspace
|
||||
process that collects coverage.
|
||||
|
||||
Internally kcov stores handles as u64 integers. The top byte of a handle
|
||||
is used to denote the id of a subsystem that this handle belongs to, and
|
||||
the lower 4 bytes are used to denote the id of a thread instance within
|
||||
that subsystem. A reserved value 0 is used as a subsystem id for common
|
||||
handles as they don't belong to a particular subsystem. The bytes 4-7 are
|
||||
currently reserved and must be zero. In the future the number of bytes
|
||||
used for the subsystem or handle ids might be increased.
|
||||
Both ``kcov_remote_start`` and ``kcov_remote_stop`` annotations and the
|
||||
``KCOV_REMOTE_ENABLE`` ioctl accept handles that identify particular coverage
|
||||
collection sections. The way a handle is used depends on the context where the
|
||||
matching code section executes.
|
||||
|
||||
When a particular userspace process collects coverage via a common
|
||||
handle, kcov will collect coverage for each code section that is annotated
|
||||
to use the common handle obtained as kcov_handle from the current
|
||||
task_struct. However non common handles allow to collect coverage
|
||||
selectively from different subsystems.
|
||||
KCOV supports collecting remote coverage from the following contexts:
|
||||
|
||||
1. Global kernel background tasks. These are the tasks that are spawned during
|
||||
kernel boot in a limited number of instances (e.g. one USB ``hub_event``
|
||||
worker is spawned per one USB HCD).
|
||||
|
||||
2. Local kernel background tasks. These are spawned when a userspace process
|
||||
interacts with some kernel interface and are usually killed when the process
|
||||
exits (e.g. vhost workers).
|
||||
|
||||
3. Soft interrupts.
|
||||
|
||||
For #1 and #3, a unique global handle must be chosen and passed to the
|
||||
corresponding ``kcov_remote_start`` call. Then a userspace process must pass
|
||||
this handle to ``KCOV_REMOTE_ENABLE`` in the ``handles`` array field of the
|
||||
``kcov_remote_arg`` struct. This will attach the used KCOV device to the code
|
||||
section referenced by this handle. Multiple global handles identifying
|
||||
different code sections can be passed at once.
|
||||
|
||||
For #2, the userspace process instead must pass a non-zero handle through the
|
||||
``common_handle`` field of the ``kcov_remote_arg`` struct. This common handle
|
||||
gets saved to the ``kcov_handle`` field in the current ``task_struct`` and
|
||||
needs to be passed to the newly spawned local tasks via custom kernel code
|
||||
modifications. Those tasks should in turn use the passed handle in their
|
||||
``kcov_remote_start`` and ``kcov_remote_stop`` annotations.
|
||||
|
||||
KCOV follows a predefined format for both global and common handles. Each
|
||||
handle is a ``u64`` integer. Currently, only the one top and the lower 4 bytes
|
||||
are used. Bytes 4-7 are reserved and must be zero.
|
||||
|
||||
For global handles, the top byte of the handle denotes the id of a subsystem
|
||||
this handle belongs to. For example, KCOV uses ``1`` as the USB subsystem id.
|
||||
The lower 4 bytes of a global handle denote the id of a task instance within
|
||||
that subsystem. For example, each ``hub_event`` worker uses the USB bus number
|
||||
as the task instance id.
|
||||
|
||||
For common handles, a reserved value ``0`` is used as a subsystem id, as such
|
||||
handles don't belong to a particular subsystem. The lower 4 bytes of a common
|
||||
handle identify a collective instance of all local tasks spawned by the
|
||||
userspace process that passed a common handle to ``KCOV_REMOTE_ENABLE``.
|
||||
|
||||
In practice, any value can be used for common handle instance id if coverage
|
||||
is only collected from a single userspace process on the system. However, if
|
||||
common handles are used by multiple processes, unique instance ids must be
|
||||
used for each process. One option is to use the process id as the common
|
||||
handle instance id.
|
||||
|
||||
The following program demonstrates using KCOV to collect coverage from both
|
||||
local tasks spawned by the process and the global task that handles USB bus #1:
|
||||
|
||||
.. code-block:: c
|
||||
|
||||
|
||||
@ -179,6 +179,7 @@ read the file /proc/PID/status::
|
||||
Gid: 100 100 100 100
|
||||
FDSize: 256
|
||||
Groups: 100 14 16
|
||||
Kthread: 0
|
||||
VmPeak: 5004 kB
|
||||
VmSize: 5004 kB
|
||||
VmLck: 0 kB
|
||||
@ -256,6 +257,7 @@ It's slow but very precise.
|
||||
NSpid descendant namespace process ID hierarchy
|
||||
NSpgid descendant namespace process group ID hierarchy
|
||||
NSsid descendant namespace session ID hierarchy
|
||||
Kthread kernel thread flag, 1 is yes, 0 is no
|
||||
VmPeak peak virtual memory size
|
||||
VmSize total program size
|
||||
VmLck locked memory size
|
||||
|
||||
@ -207,8 +207,8 @@ the patch::
|
||||
Fixes: 1f2e3d4c5b6a ("The first line of the commit specified by the first 12 characters of its SHA-1 ID")
|
||||
|
||||
Another tag is used for linking web pages with additional backgrounds or
|
||||
details, for example a report about a bug fixed by the patch or a document
|
||||
with a specification implemented by the patch::
|
||||
details, for example an earlier discussion which leads to the patch or a
|
||||
document with a specification implemented by the patch::
|
||||
|
||||
Link: https://example.com/somewhere.html optional-other-stuff
|
||||
|
||||
@ -217,7 +217,17 @@ latest public review posting of the patch; often this is automatically done
|
||||
by tools like b4 or a git hook like the one described in
|
||||
'Documentation/maintainer/configure-git.rst'.
|
||||
|
||||
A third kind of tag is used to document who was involved in the development of
|
||||
If the URL points to a public bug report being fixed by the patch, use the
|
||||
"Closes:" tag instead::
|
||||
|
||||
Closes: https://example.com/issues/1234 optional-other-stuff
|
||||
|
||||
Some bug trackers have the ability to close issues automatically when a
|
||||
commit with such a tag is applied. Some bots monitoring mailing lists can
|
||||
also track such tags and take certain actions. Private bug trackers and
|
||||
invalid URLs are forbidden.
|
||||
|
||||
Another kind of tag is used to document who was involved in the development of
|
||||
the patch. Each of these uses this format::
|
||||
|
||||
tag: Full Name <email address> optional-other-stuff
|
||||
@ -251,8 +261,10 @@ The tags in common use are:
|
||||
- Reported-by: names a user who reported a problem which is fixed by this
|
||||
patch; this tag is used to give credit to the (often underappreciated)
|
||||
people who test our code and let us know when things do not work
|
||||
correctly. Note, this tag should be followed by a Link: tag pointing to the
|
||||
report, unless the report is not available on the web.
|
||||
correctly. Note, this tag should be followed by a Closes: tag pointing to
|
||||
the report, unless the report is not available on the web. The Link: tag
|
||||
can be used instead of Closes: if the patch fixes a part of the issue(s)
|
||||
being reported.
|
||||
|
||||
- Cc: the named person received a copy of the patch and had the
|
||||
opportunity to comment on it.
|
||||
|
||||
@ -113,11 +113,9 @@ there is no collision with your six-character ID now, that condition may
|
||||
change five years from now.
|
||||
|
||||
If related discussions or any other background information behind the change
|
||||
can be found on the web, add 'Link:' tags pointing to it. In case your patch
|
||||
fixes a bug, for example, add a tag with a URL referencing the report in the
|
||||
mailing list archives or a bug tracker; if the patch is a result of some
|
||||
earlier mailing list discussion or something documented on the web, point to
|
||||
it.
|
||||
can be found on the web, add 'Link:' tags pointing to it. If the patch is a
|
||||
result of some earlier mailing list discussions or something documented on the
|
||||
web, point to it.
|
||||
|
||||
When linking to mailing list archives, preferably use the lore.kernel.org
|
||||
message archiver service. To create the link URL, use the contents of the
|
||||
@ -134,6 +132,16 @@ resources. In addition to giving a URL to a mailing list archive or bug,
|
||||
summarize the relevant points of the discussion that led to the
|
||||
patch as submitted.
|
||||
|
||||
In case your patch fixes a bug, use the 'Closes:' tag with a URL referencing
|
||||
the report in the mailing list archives or a public bug tracker. For example::
|
||||
|
||||
Closes: https://example.com/issues/1234
|
||||
|
||||
Some bug trackers have the ability to close issues automatically when a
|
||||
commit with such a tag is applied. Some bots monitoring mailing lists can
|
||||
also track such tags and take certain actions. Private bug trackers and
|
||||
invalid URLs are forbidden.
|
||||
|
||||
If your patch fixes a bug in a specific commit, e.g. you found an issue using
|
||||
``git bisect``, please use the 'Fixes:' tag with the first 12 characters of
|
||||
the SHA-1 ID, and the one line summary. Do not split the tag across multiple
|
||||
@ -495,9 +503,11 @@ Using Reported-by:, Tested-by:, Reviewed-by:, Suggested-by: and Fixes:
|
||||
The Reported-by tag gives credit to people who find bugs and report them and it
|
||||
hopefully inspires them to help us again in the future. The tag is intended for
|
||||
bugs; please do not use it to credit feature requests. The tag should be
|
||||
followed by a Link: tag pointing to the report, unless the report is not
|
||||
available on the web. Please note that if the bug was reported in private, then
|
||||
ask for permission first before using the Reported-by tag.
|
||||
followed by a Closes: tag pointing to the report, unless the report is not
|
||||
available on the web. The Link: tag can be used instead of Closes: if the patch
|
||||
fixes a part of the issue(s) being reported. Please note that if the bug was
|
||||
reported in private, then ask for permission first before using the Reported-by
|
||||
tag.
|
||||
|
||||
A Tested-by: tag indicates that the patch has been successfully tested (in
|
||||
some environment) by the person named. This tag informs maintainers that
|
||||
|
||||
@ -92,15 +92,15 @@ getdelays命令的一般格式::
|
||||
CPU count real total virtual total delay total delay average
|
||||
8 7000000 6872122 3382277 0.423ms
|
||||
IO count delay total delay average
|
||||
0 0 0ms
|
||||
0 0 0.000ms
|
||||
SWAP count delay total delay average
|
||||
0 0 0ms
|
||||
0 0 0.000ms
|
||||
RECLAIM count delay total delay average
|
||||
0 0 0ms
|
||||
0 0 0.000ms
|
||||
THRASHING count delay total delay average
|
||||
0 0 0ms
|
||||
0 0 0.000ms
|
||||
COMPACT count delay total delay average
|
||||
0 0 0ms
|
||||
0 0 0.000ms
|
||||
WPCOPY count delay total delay average
|
||||
0 0 0ms
|
||||
|
||||
|
||||
@ -7564,12 +7564,6 @@ T: git git://linuxtv.org/media_tree.git
|
||||
F: Documentation/admin-guide/media/em28xx*
|
||||
F: drivers/media/usb/em28xx/
|
||||
|
||||
EMBEDDED LINUX
|
||||
M: Olivia Mackall <olivia@selenic.com>
|
||||
M: David Woodhouse <dwmw2@infradead.org>
|
||||
L: linux-embedded@vger.kernel.org
|
||||
S: Maintained
|
||||
|
||||
EMMC CMDQ HOST CONTROLLER INTERFACE (CQHCI) DRIVER
|
||||
M: Adrian Hunter <adrian.hunter@intel.com>
|
||||
M: Ritesh Harjani <riteshh@codeaurora.org>
|
||||
|
||||
@ -581,7 +581,7 @@ static int salinfo_cpu_pre_down(unsigned int cpu)
|
||||
* 'data' contains an integer that corresponds to the feature we're
|
||||
* testing
|
||||
*/
|
||||
static int proc_salinfo_show(struct seq_file *m, void *v)
|
||||
static int __maybe_unused proc_salinfo_show(struct seq_file *m, void *v)
|
||||
{
|
||||
unsigned long data = (unsigned long)v;
|
||||
seq_puts(m, (sal_platform_features & data) ? "1\n" : "0\n");
|
||||
|
||||
@ -77,7 +77,7 @@ skip:
|
||||
return __per_cpu_start + __per_cpu_offset[smp_processor_id()];
|
||||
}
|
||||
|
||||
static inline void
|
||||
static inline __init void
|
||||
alloc_per_cpu_data(void)
|
||||
{
|
||||
size_t size = PERCPU_PAGE_SIZE * num_possible_cpus();
|
||||
|
||||
@ -58,7 +58,7 @@ huge_pte_offset (struct mm_struct *mm, unsigned long addr, unsigned long sz)
|
||||
|
||||
pgd = pgd_offset(mm, taddr);
|
||||
if (pgd_present(*pgd)) {
|
||||
p4d = p4d_offset(pgd, addr);
|
||||
p4d = p4d_offset(pgd, taddr);
|
||||
if (p4d_present(*p4d)) {
|
||||
pud = pud_offset(p4d, taddr);
|
||||
if (pud_present(*pud)) {
|
||||
|
||||
@ -245,7 +245,7 @@ static void read_ehdr(FILE *fp)
|
||||
die("Unknown ELF version\n");
|
||||
|
||||
if (ehdr.e_ehsize != sizeof(Elf_Ehdr))
|
||||
die("Bad Elf header size\n");
|
||||
die("Bad ELF header size\n");
|
||||
|
||||
if (ehdr.e_phentsize != sizeof(Elf_Phdr))
|
||||
die("Bad program header entry\n");
|
||||
|
||||
@ -2,7 +2,7 @@
|
||||
/*
|
||||
* arch/um/kernel/elf_aux.c
|
||||
*
|
||||
* Scan the Elf auxiliary vector provided by the host to extract
|
||||
* Scan the ELF auxiliary vector provided by the host to extract
|
||||
* information about vsyscall-page, etc.
|
||||
*
|
||||
* Copyright (C) 2004 Fujitsu Siemens Computers GmbH
|
||||
|
||||
@ -200,9 +200,6 @@ int arch_kexec_apply_relocations_add(struct purgatory_info *pi,
|
||||
const Elf_Shdr *symtab);
|
||||
#define arch_kexec_apply_relocations_add arch_kexec_apply_relocations_add
|
||||
|
||||
void *arch_kexec_kernel_image_load(struct kimage *image);
|
||||
#define arch_kexec_kernel_image_load arch_kexec_kernel_image_load
|
||||
|
||||
int arch_kimage_file_post_load_cleanup(struct kimage *image);
|
||||
#define arch_kimage_file_post_load_cleanup arch_kimage_file_post_load_cleanup
|
||||
#endif
|
||||
|
||||
@ -374,17 +374,6 @@ void machine_kexec(struct kimage *image)
|
||||
/* arch-dependent functionality related to kexec file-based syscall */
|
||||
|
||||
#ifdef CONFIG_KEXEC_FILE
|
||||
void *arch_kexec_kernel_image_load(struct kimage *image)
|
||||
{
|
||||
if (!image->fops || !image->fops->load)
|
||||
return ERR_PTR(-ENOEXEC);
|
||||
|
||||
return image->fops->load(image, image->kernel_buf,
|
||||
image->kernel_buf_len, image->initrd_buf,
|
||||
image->initrd_buf_len, image->cmdline_buf,
|
||||
image->cmdline_buf_len);
|
||||
}
|
||||
|
||||
/*
|
||||
* Apply purgatory relocations.
|
||||
*
|
||||
|
||||
@ -406,7 +406,7 @@ static void read_ehdr(FILE *fp)
|
||||
if (ehdr.e_version != EV_CURRENT)
|
||||
die("Unknown ELF version\n");
|
||||
if (ehdr.e_ehsize != sizeof(Elf_Ehdr))
|
||||
die("Bad Elf header size\n");
|
||||
die("Bad ELF header size\n");
|
||||
if (ehdr.e_phentsize != sizeof(Elf_Phdr))
|
||||
die("Bad program header entry\n");
|
||||
if (ehdr.e_shentsize != sizeof(Elf_Shdr))
|
||||
|
||||
@ -294,9 +294,7 @@ EXPORT_SYMBOL_GPL(dca3_get_tag);
|
||||
*/
|
||||
u8 dca_get_tag(int cpu)
|
||||
{
|
||||
struct device *dev = NULL;
|
||||
|
||||
return dca_common_get_tag(dev, cpu);
|
||||
return dca_common_get_tag(NULL, cpu);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dca_get_tag);
|
||||
|
||||
|
||||
@ -2924,7 +2924,6 @@ err_unmap_bars:
|
||||
iounmap(priv->odb_base);
|
||||
err_free_res:
|
||||
pci_release_regions(pdev);
|
||||
pci_clear_master(pdev);
|
||||
err_disable_pdev:
|
||||
pci_disable_device(pdev);
|
||||
err_clean:
|
||||
@ -2962,7 +2961,6 @@ static void tsi721_remove(struct pci_dev *pdev)
|
||||
pci_disable_msi(priv->pdev);
|
||||
#endif
|
||||
pci_release_regions(pdev);
|
||||
pci_clear_master(pdev);
|
||||
pci_disable_device(pdev);
|
||||
pci_set_drvdata(pdev, NULL);
|
||||
kfree(priv);
|
||||
@ -2977,7 +2975,6 @@ static void tsi721_shutdown(struct pci_dev *pdev)
|
||||
|
||||
tsi721_disable_ints(priv);
|
||||
tsi721_dma_stop_all(priv);
|
||||
pci_clear_master(pdev);
|
||||
pci_disable_device(pdev);
|
||||
}
|
||||
|
||||
|
||||
@ -249,7 +249,7 @@ void rproc_coredump(struct rproc *rproc)
|
||||
return;
|
||||
|
||||
if (class == ELFCLASSNONE) {
|
||||
dev_err(&rproc->dev, "Elf class is not set\n");
|
||||
dev_err(&rproc->dev, "ELF class is not set\n");
|
||||
return;
|
||||
}
|
||||
|
||||
@ -361,7 +361,7 @@ void rproc_coredump_using_sections(struct rproc *rproc)
|
||||
return;
|
||||
|
||||
if (class == ELFCLASSNONE) {
|
||||
dev_err(&rproc->dev, "Elf class is not set\n");
|
||||
dev_err(&rproc->dev, "ELF class is not set\n");
|
||||
return;
|
||||
}
|
||||
|
||||
|
||||
@ -1,6 +1,6 @@
|
||||
// SPDX-License-Identifier: GPL-2.0-only
|
||||
/*
|
||||
* Remote Processor Framework Elf loader
|
||||
* Remote Processor Framework ELF loader
|
||||
*
|
||||
* Copyright (C) 2011 Texas Instruments, Inc.
|
||||
* Copyright (C) 2011 Google, Inc.
|
||||
@ -39,7 +39,7 @@ int rproc_elf_sanity_check(struct rproc *rproc, const struct firmware *fw)
|
||||
const char *name = rproc->firmware;
|
||||
struct device *dev = &rproc->dev;
|
||||
/*
|
||||
* Elf files are beginning with the same structure. Thus, to simplify
|
||||
* ELF files are beginning with the same structure. Thus, to simplify
|
||||
* header parsing, we can use the elf32_hdr one for both elf64 and
|
||||
* elf32.
|
||||
*/
|
||||
|
||||
@ -2058,7 +2058,7 @@ static int elf_core_dump(struct coredump_params *cprm)
|
||||
|
||||
has_dumped = 1;
|
||||
|
||||
offset += sizeof(elf); /* Elf header */
|
||||
offset += sizeof(elf); /* ELF header */
|
||||
offset += segs * sizeof(struct elf_phdr); /* Program headers */
|
||||
|
||||
/* Write notes phdr entry */
|
||||
|
||||
@ -1540,7 +1540,7 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
|
||||
fill_note(&auxv_note, "CORE", NT_AUXV, i * sizeof(elf_addr_t), auxv);
|
||||
thread_status_size += notesize(&auxv_note);
|
||||
|
||||
offset = sizeof(*elf); /* Elf header */
|
||||
offset = sizeof(*elf); /* ELF header */
|
||||
offset += segs * sizeof(struct elf_phdr); /* Program headers */
|
||||
|
||||
/* Write notes phdr entry */
|
||||
|
||||
217
fs/eventpoll.c
217
fs/eventpoll.c
@ -43,7 +43,7 @@
|
||||
* LOCKING:
|
||||
* There are three level of locking required by epoll :
|
||||
*
|
||||
* 1) epmutex (mutex)
|
||||
* 1) epnested_mutex (mutex)
|
||||
* 2) ep->mtx (mutex)
|
||||
* 3) ep->lock (rwlock)
|
||||
*
|
||||
@ -57,14 +57,8 @@
|
||||
* we need a lock that will allow us to sleep. This lock is a
|
||||
* mutex (ep->mtx). It is acquired during the event transfer loop,
|
||||
* during epoll_ctl(EPOLL_CTL_DEL) and during eventpoll_release_file().
|
||||
* Then we also need a global mutex to serialize eventpoll_release_file()
|
||||
* and ep_free().
|
||||
* This mutex is acquired by ep_free() during the epoll file
|
||||
* cleanup path and it is also acquired by eventpoll_release_file()
|
||||
* if a file has been pushed inside an epoll set and it is then
|
||||
* close()d without a previous call to epoll_ctl(EPOLL_CTL_DEL).
|
||||
* It is also acquired when inserting an epoll fd onto another epoll
|
||||
* fd. We do this so that we walk the epoll tree and ensure that this
|
||||
* The epnested_mutex is acquired when inserting an epoll fd onto another
|
||||
* epoll fd. We do this so that we walk the epoll tree and ensure that this
|
||||
* insertion does not create a cycle of epoll file descriptors, which
|
||||
* could lead to deadlock. We need a global mutex to prevent two
|
||||
* simultaneous inserts (A into B and B into A) from racing and
|
||||
@ -80,9 +74,9 @@
|
||||
* of epoll file descriptors, we use the current recursion depth as
|
||||
* the lockdep subkey.
|
||||
* It is possible to drop the "ep->mtx" and to use the global
|
||||
* mutex "epmutex" (together with "ep->lock") to have it working,
|
||||
* mutex "epnested_mutex" (together with "ep->lock") to have it working,
|
||||
* but having "ep->mtx" will make the interface more scalable.
|
||||
* Events that require holding "epmutex" are very rare, while for
|
||||
* Events that require holding "epnested_mutex" are very rare, while for
|
||||
* normal operations the epoll private "ep->mtx" will guarantee
|
||||
* a better scalability.
|
||||
*/
|
||||
@ -153,6 +147,13 @@ struct epitem {
|
||||
/* The file descriptor information this item refers to */
|
||||
struct epoll_filefd ffd;
|
||||
|
||||
/*
|
||||
* Protected by file->f_lock, true for to-be-released epitem already
|
||||
* removed from the "struct file" items list; together with
|
||||
* eventpoll->refcount orchestrates "struct eventpoll" disposal
|
||||
*/
|
||||
bool dying;
|
||||
|
||||
/* List containing poll wait queues */
|
||||
struct eppoll_entry *pwqlist;
|
||||
|
||||
@ -217,6 +218,12 @@ struct eventpoll {
|
||||
u64 gen;
|
||||
struct hlist_head refs;
|
||||
|
||||
/*
|
||||
* usage count, used together with epitem->dying to
|
||||
* orchestrate the disposal of this struct
|
||||
*/
|
||||
refcount_t refcount;
|
||||
|
||||
#ifdef CONFIG_NET_RX_BUSY_POLL
|
||||
/* used to track busy poll napi_id */
|
||||
unsigned int napi_id;
|
||||
@ -240,10 +247,8 @@ struct ep_pqueue {
|
||||
/* Maximum number of epoll watched descriptors, per user */
|
||||
static long max_user_watches __read_mostly;
|
||||
|
||||
/*
|
||||
* This mutex is used to serialize ep_free() and eventpoll_release_file().
|
||||
*/
|
||||
static DEFINE_MUTEX(epmutex);
|
||||
/* Used for cycles detection */
|
||||
static DEFINE_MUTEX(epnested_mutex);
|
||||
|
||||
static u64 loop_check_gen = 0;
|
||||
|
||||
@ -258,7 +263,7 @@ static struct kmem_cache *pwq_cache __read_mostly;
|
||||
|
||||
/*
|
||||
* List of files with newly added links, where we may need to limit the number
|
||||
* of emanating paths. Protected by the epmutex.
|
||||
* of emanating paths. Protected by the epnested_mutex.
|
||||
*/
|
||||
struct epitems_head {
|
||||
struct hlist_head epitems;
|
||||
@ -557,8 +562,7 @@ static void ep_remove_wait_queue(struct eppoll_entry *pwq)
|
||||
|
||||
/*
|
||||
* This function unregisters poll callbacks from the associated file
|
||||
* descriptor. Must be called with "mtx" held (or "epmutex" if called from
|
||||
* ep_free).
|
||||
* descriptor. Must be called with "mtx" held.
|
||||
*/
|
||||
static void ep_unregister_pollwait(struct eventpoll *ep, struct epitem *epi)
|
||||
{
|
||||
@ -681,11 +685,40 @@ static void epi_rcu_free(struct rcu_head *head)
|
||||
kmem_cache_free(epi_cache, epi);
|
||||
}
|
||||
|
||||
static void ep_get(struct eventpoll *ep)
|
||||
{
|
||||
refcount_inc(&ep->refcount);
|
||||
}
|
||||
|
||||
/*
|
||||
* Returns true if the event poll can be disposed
|
||||
*/
|
||||
static bool ep_refcount_dec_and_test(struct eventpoll *ep)
|
||||
{
|
||||
if (!refcount_dec_and_test(&ep->refcount))
|
||||
return false;
|
||||
|
||||
WARN_ON_ONCE(!RB_EMPTY_ROOT(&ep->rbr.rb_root));
|
||||
return true;
|
||||
}
|
||||
|
||||
static void ep_free(struct eventpoll *ep)
|
||||
{
|
||||
mutex_destroy(&ep->mtx);
|
||||
free_uid(ep->user);
|
||||
wakeup_source_unregister(ep->ws);
|
||||
kfree(ep);
|
||||
}
|
||||
|
||||
/*
|
||||
* Removes a "struct epitem" from the eventpoll RB tree and deallocates
|
||||
* all the associated resources. Must be called with "mtx" held.
|
||||
* If the dying flag is set, do the removal only if force is true.
|
||||
* This prevents ep_clear_and_put() from dropping all the ep references
|
||||
* while running concurrently with eventpoll_release_file().
|
||||
* Returns true if the eventpoll can be disposed.
|
||||
*/
|
||||
static int ep_remove(struct eventpoll *ep, struct epitem *epi)
|
||||
static bool __ep_remove(struct eventpoll *ep, struct epitem *epi, bool force)
|
||||
{
|
||||
struct file *file = epi->ffd.file;
|
||||
struct epitems_head *to_free;
|
||||
@ -700,6 +733,11 @@ static int ep_remove(struct eventpoll *ep, struct epitem *epi)
|
||||
|
||||
/* Remove the current item from the list of epoll hooks */
|
||||
spin_lock(&file->f_lock);
|
||||
if (epi->dying && !force) {
|
||||
spin_unlock(&file->f_lock);
|
||||
return false;
|
||||
}
|
||||
|
||||
to_free = NULL;
|
||||
head = file->f_ep;
|
||||
if (head->first == &epi->fllink && !epi->fllink.next) {
|
||||
@ -733,28 +771,28 @@ static int ep_remove(struct eventpoll *ep, struct epitem *epi)
|
||||
call_rcu(&epi->rcu, epi_rcu_free);
|
||||
|
||||
percpu_counter_dec(&ep->user->epoll_watches);
|
||||
|
||||
return 0;
|
||||
return ep_refcount_dec_and_test(ep);
|
||||
}
|
||||
|
||||
static void ep_free(struct eventpoll *ep)
|
||||
/*
|
||||
* ep_remove variant for callers owing an additional reference to the ep
|
||||
*/
|
||||
static void ep_remove_safe(struct eventpoll *ep, struct epitem *epi)
|
||||
{
|
||||
struct rb_node *rbp;
|
||||
WARN_ON_ONCE(__ep_remove(ep, epi, false));
|
||||
}
|
||||
|
||||
static void ep_clear_and_put(struct eventpoll *ep)
|
||||
{
|
||||
struct rb_node *rbp, *next;
|
||||
struct epitem *epi;
|
||||
bool dispose;
|
||||
|
||||
/* We need to release all tasks waiting for these file */
|
||||
if (waitqueue_active(&ep->poll_wait))
|
||||
ep_poll_safewake(ep, NULL, 0);
|
||||
|
||||
/*
|
||||
* We need to lock this because we could be hit by
|
||||
* eventpoll_release_file() while we're freeing the "struct eventpoll".
|
||||
* We do not need to hold "ep->mtx" here because the epoll file
|
||||
* is on the way to be removed and no one has references to it
|
||||
* anymore. The only hit might come from eventpoll_release_file() but
|
||||
* holding "epmutex" is sufficient here.
|
||||
*/
|
||||
mutex_lock(&epmutex);
|
||||
mutex_lock(&ep->mtx);
|
||||
|
||||
/*
|
||||
* Walks through the whole tree by unregistering poll callbacks.
|
||||
@ -767,26 +805,25 @@ static void ep_free(struct eventpoll *ep)
|
||||
}
|
||||
|
||||
/*
|
||||
* Walks through the whole tree by freeing each "struct epitem". At this
|
||||
* point we are sure no poll callbacks will be lingering around, and also by
|
||||
* holding "epmutex" we can be sure that no file cleanup code will hit
|
||||
* us during this operation. So we can avoid the lock on "ep->lock".
|
||||
* We do not need to lock ep->mtx, either, we only do it to prevent
|
||||
* a lockdep warning.
|
||||
* Walks through the whole tree and try to free each "struct epitem".
|
||||
* Note that ep_remove_safe() will not remove the epitem in case of a
|
||||
* racing eventpoll_release_file(); the latter will do the removal.
|
||||
* At this point we are sure no poll callbacks will be lingering around.
|
||||
* Since we still own a reference to the eventpoll struct, the loop can't
|
||||
* dispose it.
|
||||
*/
|
||||
mutex_lock(&ep->mtx);
|
||||
while ((rbp = rb_first_cached(&ep->rbr)) != NULL) {
|
||||
for (rbp = rb_first_cached(&ep->rbr); rbp; rbp = next) {
|
||||
next = rb_next(rbp);
|
||||
epi = rb_entry(rbp, struct epitem, rbn);
|
||||
ep_remove(ep, epi);
|
||||
ep_remove_safe(ep, epi);
|
||||
cond_resched();
|
||||
}
|
||||
|
||||
dispose = ep_refcount_dec_and_test(ep);
|
||||
mutex_unlock(&ep->mtx);
|
||||
|
||||
mutex_unlock(&epmutex);
|
||||
mutex_destroy(&ep->mtx);
|
||||
free_uid(ep->user);
|
||||
wakeup_source_unregister(ep->ws);
|
||||
kfree(ep);
|
||||
if (dispose)
|
||||
ep_free(ep);
|
||||
}
|
||||
|
||||
static int ep_eventpoll_release(struct inode *inode, struct file *file)
|
||||
@ -794,7 +831,7 @@ static int ep_eventpoll_release(struct inode *inode, struct file *file)
|
||||
struct eventpoll *ep = file->private_data;
|
||||
|
||||
if (ep)
|
||||
ep_free(ep);
|
||||
ep_clear_and_put(ep);
|
||||
|
||||
return 0;
|
||||
}
|
||||
@ -906,33 +943,34 @@ void eventpoll_release_file(struct file *file)
|
||||
{
|
||||
struct eventpoll *ep;
|
||||
struct epitem *epi;
|
||||
struct hlist_node *next;
|
||||
bool dispose;
|
||||
|
||||
/*
|
||||
* We don't want to get "file->f_lock" because it is not
|
||||
* necessary. It is not necessary because we're in the "struct file"
|
||||
* cleanup path, and this means that no one is using this file anymore.
|
||||
* So, for example, epoll_ctl() cannot hit here since if we reach this
|
||||
* point, the file counter already went to zero and fget() would fail.
|
||||
* The only hit might come from ep_free() but by holding the mutex
|
||||
* will correctly serialize the operation. We do need to acquire
|
||||
* "ep->mtx" after "epmutex" because ep_remove() requires it when called
|
||||
* from anywhere but ep_free().
|
||||
*
|
||||
* Besides, ep_remove() acquires the lock, so we can't hold it here.
|
||||
* Use the 'dying' flag to prevent a concurrent ep_clear_and_put() from
|
||||
* touching the epitems list before eventpoll_release_file() can access
|
||||
* the ep->mtx.
|
||||
*/
|
||||
mutex_lock(&epmutex);
|
||||
if (unlikely(!file->f_ep)) {
|
||||
mutex_unlock(&epmutex);
|
||||
return;
|
||||
}
|
||||
hlist_for_each_entry_safe(epi, next, file->f_ep, fllink) {
|
||||
again:
|
||||
spin_lock(&file->f_lock);
|
||||
if (file->f_ep && file->f_ep->first) {
|
||||
epi = hlist_entry(file->f_ep->first, struct epitem, fllink);
|
||||
epi->dying = true;
|
||||
spin_unlock(&file->f_lock);
|
||||
|
||||
/*
|
||||
* ep access is safe as we still own a reference to the ep
|
||||
* struct
|
||||
*/
|
||||
ep = epi->ep;
|
||||
mutex_lock_nested(&ep->mtx, 0);
|
||||
ep_remove(ep, epi);
|
||||
mutex_lock(&ep->mtx);
|
||||
dispose = __ep_remove(ep, epi, true);
|
||||
mutex_unlock(&ep->mtx);
|
||||
|
||||
if (dispose)
|
||||
ep_free(ep);
|
||||
goto again;
|
||||
}
|
||||
mutex_unlock(&epmutex);
|
||||
spin_unlock(&file->f_lock);
|
||||
}
|
||||
|
||||
static int ep_alloc(struct eventpoll **pep)
|
||||
@ -955,6 +993,7 @@ static int ep_alloc(struct eventpoll **pep)
|
||||
ep->rbr = RB_ROOT_CACHED;
|
||||
ep->ovflist = EP_UNACTIVE_PTR;
|
||||
ep->user = user;
|
||||
refcount_set(&ep->refcount, 1);
|
||||
|
||||
*pep = ep;
|
||||
|
||||
@ -1223,10 +1262,10 @@ out_unlock:
|
||||
*/
|
||||
list_del_init(&wait->entry);
|
||||
/*
|
||||
* ->whead != NULL protects us from the race with ep_free()
|
||||
* or ep_remove(), ep_remove_wait_queue() takes whead->lock
|
||||
* held by the caller. Once we nullify it, nothing protects
|
||||
* ep/epi or even wait.
|
||||
* ->whead != NULL protects us from the race with
|
||||
* ep_clear_and_put() or ep_remove(), ep_remove_wait_queue()
|
||||
* takes whead->lock held by the caller. Once we nullify it,
|
||||
* nothing protects ep/epi or even wait.
|
||||
*/
|
||||
smp_store_release(&ep_pwq_from_wait(wait)->whead, NULL);
|
||||
}
|
||||
@ -1298,7 +1337,7 @@ static void ep_rbtree_insert(struct eventpoll *ep, struct epitem *epi)
|
||||
* is connected to n file sources. In this case each file source has 1 path
|
||||
* of length 1. Thus, the numbers below should be more than sufficient. These
|
||||
* path limits are enforced during an EPOLL_CTL_ADD operation, since a modify
|
||||
* and delete can't add additional paths. Protected by the epmutex.
|
||||
* and delete can't add additional paths. Protected by the epnested_mutex.
|
||||
*/
|
||||
static const int path_limits[PATH_ARR_SIZE] = { 1000, 500, 100, 50, 10 };
|
||||
static int path_count[PATH_ARR_SIZE];
|
||||
@ -1496,16 +1535,22 @@ static int ep_insert(struct eventpoll *ep, const struct epoll_event *event,
|
||||
if (tep)
|
||||
mutex_unlock(&tep->mtx);
|
||||
|
||||
/*
|
||||
* ep_remove_safe() calls in the later error paths can't lead to
|
||||
* ep_free() as the ep file itself still holds an ep reference.
|
||||
*/
|
||||
ep_get(ep);
|
||||
|
||||
/* now check if we've created too many backpaths */
|
||||
if (unlikely(full_check && reverse_path_check())) {
|
||||
ep_remove(ep, epi);
|
||||
ep_remove_safe(ep, epi);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
if (epi->event.events & EPOLLWAKEUP) {
|
||||
error = ep_create_wakeup_source(epi);
|
||||
if (error) {
|
||||
ep_remove(ep, epi);
|
||||
ep_remove_safe(ep, epi);
|
||||
return error;
|
||||
}
|
||||
}
|
||||
@ -1529,7 +1574,7 @@ static int ep_insert(struct eventpoll *ep, const struct epoll_event *event,
|
||||
* high memory pressure.
|
||||
*/
|
||||
if (unlikely(!epq.epi)) {
|
||||
ep_remove(ep, epi);
|
||||
ep_remove_safe(ep, epi);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
@ -2025,7 +2070,7 @@ static int do_epoll_create(int flags)
|
||||
out_free_fd:
|
||||
put_unused_fd(fd);
|
||||
out_free_ep:
|
||||
ep_free(ep);
|
||||
ep_clear_and_put(ep);
|
||||
return error;
|
||||
}
|
||||
|
||||
@ -2135,7 +2180,7 @@ int do_epoll_ctl(int epfd, int op, int fd, struct epoll_event *epds,
|
||||
* We do not need to take the global 'epumutex' on EPOLL_CTL_ADD when
|
||||
* the epoll file descriptor is attaching directly to a wakeup source,
|
||||
* unless the epoll file descriptor is nested. The purpose of taking the
|
||||
* 'epmutex' on add is to prevent complex toplogies such as loops and
|
||||
* 'epnested_mutex' on add is to prevent complex toplogies such as loops and
|
||||
* deep wakeup paths from forming in parallel through multiple
|
||||
* EPOLL_CTL_ADD operations.
|
||||
*/
|
||||
@ -2146,7 +2191,7 @@ int do_epoll_ctl(int epfd, int op, int fd, struct epoll_event *epds,
|
||||
if (READ_ONCE(f.file->f_ep) || ep->gen == loop_check_gen ||
|
||||
is_file_epoll(tf.file)) {
|
||||
mutex_unlock(&ep->mtx);
|
||||
error = epoll_mutex_lock(&epmutex, 0, nonblock);
|
||||
error = epoll_mutex_lock(&epnested_mutex, 0, nonblock);
|
||||
if (error)
|
||||
goto error_tgt_fput;
|
||||
loop_check_gen++;
|
||||
@ -2180,10 +2225,16 @@ int do_epoll_ctl(int epfd, int op, int fd, struct epoll_event *epds,
|
||||
error = -EEXIST;
|
||||
break;
|
||||
case EPOLL_CTL_DEL:
|
||||
if (epi)
|
||||
error = ep_remove(ep, epi);
|
||||
else
|
||||
if (epi) {
|
||||
/*
|
||||
* The eventpoll itself is still alive: the refcount
|
||||
* can't go to zero here.
|
||||
*/
|
||||
ep_remove_safe(ep, epi);
|
||||
error = 0;
|
||||
} else {
|
||||
error = -ENOENT;
|
||||
}
|
||||
break;
|
||||
case EPOLL_CTL_MOD:
|
||||
if (epi) {
|
||||
@ -2201,7 +2252,7 @@ error_tgt_fput:
|
||||
if (full_check) {
|
||||
clear_tfile_check_list();
|
||||
loop_check_gen++;
|
||||
mutex_unlock(&epmutex);
|
||||
mutex_unlock(&epnested_mutex);
|
||||
}
|
||||
|
||||
fdput(tf);
|
||||
|
||||
@ -21,9 +21,8 @@ static void nfs3_prepare_get_acl(struct posix_acl **p)
|
||||
{
|
||||
struct posix_acl *sentinel = uncached_acl_sentinel(current);
|
||||
|
||||
if (cmpxchg(p, ACL_NOT_CACHED, sentinel) != ACL_NOT_CACHED) {
|
||||
/* Not the first reader or sentinel already in place. */
|
||||
}
|
||||
/* If the ACL isn't being read yet, set our sentinel. */
|
||||
cmpxchg(p, ACL_NOT_CACHED, sentinel);
|
||||
}
|
||||
|
||||
static void nfs3_complete_get_acl(struct posix_acl **p, struct posix_acl *acl)
|
||||
|
||||
@ -803,8 +803,8 @@ bail:
|
||||
* a better backward&forward compatibility, since a small piece of
|
||||
* request will be less likely to be broken if disk layout get changed.
|
||||
*/
|
||||
static int ocfs2_info_handle(struct inode *inode, struct ocfs2_info *info,
|
||||
int compat_flag)
|
||||
static noinline_for_stack int
|
||||
ocfs2_info_handle(struct inode *inode, struct ocfs2_info *info, int compat_flag)
|
||||
{
|
||||
int i, status = 0;
|
||||
u64 req_addr;
|
||||
@ -840,27 +840,26 @@ bail:
|
||||
long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
struct inode *inode = file_inode(filp);
|
||||
int new_clusters;
|
||||
int status;
|
||||
struct ocfs2_space_resv sr;
|
||||
struct ocfs2_new_group_input input;
|
||||
struct reflink_arguments args;
|
||||
const char __user *old_path;
|
||||
const char __user *new_path;
|
||||
bool preserve;
|
||||
struct ocfs2_info info;
|
||||
void __user *argp = (void __user *)arg;
|
||||
int status;
|
||||
|
||||
switch (cmd) {
|
||||
case OCFS2_IOC_RESVSP:
|
||||
case OCFS2_IOC_RESVSP64:
|
||||
case OCFS2_IOC_UNRESVSP:
|
||||
case OCFS2_IOC_UNRESVSP64:
|
||||
{
|
||||
struct ocfs2_space_resv sr;
|
||||
|
||||
if (copy_from_user(&sr, (int __user *) arg, sizeof(sr)))
|
||||
return -EFAULT;
|
||||
|
||||
return ocfs2_change_file_space(filp, cmd, &sr);
|
||||
}
|
||||
case OCFS2_IOC_GROUP_EXTEND:
|
||||
{
|
||||
int new_clusters;
|
||||
|
||||
if (!capable(CAP_SYS_RESOURCE))
|
||||
return -EPERM;
|
||||
|
||||
@ -873,8 +872,12 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||||
status = ocfs2_group_extend(inode, new_clusters);
|
||||
mnt_drop_write_file(filp);
|
||||
return status;
|
||||
}
|
||||
case OCFS2_IOC_GROUP_ADD:
|
||||
case OCFS2_IOC_GROUP_ADD64:
|
||||
{
|
||||
struct ocfs2_new_group_input input;
|
||||
|
||||
if (!capable(CAP_SYS_RESOURCE))
|
||||
return -EPERM;
|
||||
|
||||
@ -887,7 +890,14 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||||
status = ocfs2_group_add(inode, &input);
|
||||
mnt_drop_write_file(filp);
|
||||
return status;
|
||||
}
|
||||
case OCFS2_IOC_REFLINK:
|
||||
{
|
||||
struct reflink_arguments args;
|
||||
const char __user *old_path;
|
||||
const char __user *new_path;
|
||||
bool preserve;
|
||||
|
||||
if (copy_from_user(&args, argp, sizeof(args)))
|
||||
return -EFAULT;
|
||||
old_path = (const char __user *)(unsigned long)args.old_path;
|
||||
@ -895,11 +905,16 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
|
||||
preserve = (args.preserve != 0);
|
||||
|
||||
return ocfs2_reflink_ioctl(inode, old_path, new_path, preserve);
|
||||
}
|
||||
case OCFS2_IOC_INFO:
|
||||
{
|
||||
struct ocfs2_info info;
|
||||
|
||||
if (copy_from_user(&info, argp, sizeof(struct ocfs2_info)))
|
||||
return -EFAULT;
|
||||
|
||||
return ocfs2_info_handle(inode, &info, 0);
|
||||
}
|
||||
case FITRIM:
|
||||
{
|
||||
struct super_block *sb = inode->i_sb;
|
||||
|
||||
@ -219,6 +219,8 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
|
||||
seq_put_decimal_ull(m, "\t", task_session_nr_ns(p, pid->numbers[g].ns));
|
||||
#endif
|
||||
seq_putc(m, '\n');
|
||||
|
||||
seq_printf(m, "Kthread:\t%c\n", p->flags & PF_KTHREAD ? '1' : '0');
|
||||
}
|
||||
|
||||
void render_sigset_t(struct seq_file *m, const char *header,
|
||||
|
||||
@ -700,7 +700,6 @@ int proc_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
|
||||
return error;
|
||||
|
||||
setattr_copy(&nop_mnt_idmap, inode, attr);
|
||||
mark_inode_dirty(inode);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -127,7 +127,6 @@ static int proc_notify_change(struct mnt_idmap *idmap,
|
||||
return error;
|
||||
|
||||
setattr_copy(&nop_mnt_idmap, inode, iattr);
|
||||
mark_inode_dirty(inode);
|
||||
|
||||
proc_set_user(de, inode->i_uid, inode->i_gid);
|
||||
de->mode = inode->i_mode;
|
||||
|
||||
@ -841,7 +841,6 @@ static int proc_sys_setattr(struct mnt_idmap *idmap,
|
||||
return error;
|
||||
|
||||
setattr_copy(&nop_mnt_idmap, inode, attr);
|
||||
mark_inode_dirty(inode);
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
@ -22,30 +22,6 @@
|
||||
#define arch_irq_stat() 0
|
||||
#endif
|
||||
|
||||
#ifdef arch_idle_time
|
||||
|
||||
u64 get_idle_time(struct kernel_cpustat *kcs, int cpu)
|
||||
{
|
||||
u64 idle;
|
||||
|
||||
idle = kcs->cpustat[CPUTIME_IDLE];
|
||||
if (cpu_online(cpu) && !nr_iowait_cpu(cpu))
|
||||
idle += arch_idle_time(cpu);
|
||||
return idle;
|
||||
}
|
||||
|
||||
static u64 get_iowait_time(struct kernel_cpustat *kcs, int cpu)
|
||||
{
|
||||
u64 iowait;
|
||||
|
||||
iowait = kcs->cpustat[CPUTIME_IOWAIT];
|
||||
if (cpu_online(cpu) && nr_iowait_cpu(cpu))
|
||||
iowait += arch_idle_time(cpu);
|
||||
return iowait;
|
||||
}
|
||||
|
||||
#else
|
||||
|
||||
u64 get_idle_time(struct kernel_cpustat *kcs, int cpu)
|
||||
{
|
||||
u64 idle, idle_usecs = -1ULL;
|
||||
@ -78,8 +54,6 @@ static u64 get_iowait_time(struct kernel_cpustat *kcs, int cpu)
|
||||
return iowait;
|
||||
}
|
||||
|
||||
#endif
|
||||
|
||||
static void show_irq_gap(struct seq_file *p, unsigned int gap)
|
||||
{
|
||||
static const char zeros[] = " 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0";
|
||||
|
||||
@ -339,7 +339,7 @@ static ssize_t __read_vmcore(struct iov_iter *iter, loff_t *fpos)
|
||||
return acc;
|
||||
}
|
||||
|
||||
/* Read Elf note segment */
|
||||
/* Read ELF note segment */
|
||||
if (*fpos < elfcorebuf_sz + elfnotes_sz) {
|
||||
void *kaddr;
|
||||
|
||||
@ -1109,7 +1109,7 @@ static int __init process_ptload_program_headers_elf64(char *elfptr,
|
||||
ehdr_ptr = (Elf64_Ehdr *)elfptr;
|
||||
phdr_ptr = (Elf64_Phdr*)(elfptr + sizeof(Elf64_Ehdr)); /* PT_NOTE hdr */
|
||||
|
||||
/* Skip Elf header, program headers and Elf note segment. */
|
||||
/* Skip ELF header, program headers and ELF note segment. */
|
||||
vmcore_off = elfsz + elfnotes_sz;
|
||||
|
||||
for (i = 0; i < ehdr_ptr->e_phnum; i++, phdr_ptr++) {
|
||||
@ -1152,7 +1152,7 @@ static int __init process_ptload_program_headers_elf32(char *elfptr,
|
||||
ehdr_ptr = (Elf32_Ehdr *)elfptr;
|
||||
phdr_ptr = (Elf32_Phdr*)(elfptr + sizeof(Elf32_Ehdr)); /* PT_NOTE hdr */
|
||||
|
||||
/* Skip Elf header, program headers and Elf note segment. */
|
||||
/* Skip ELF header, program headers and ELF note segment. */
|
||||
vmcore_off = elfsz + elfnotes_sz;
|
||||
|
||||
for (i = 0; i < ehdr_ptr->e_phnum; i++, phdr_ptr++) {
|
||||
@ -1188,7 +1188,7 @@ static void set_vmcore_list_offsets(size_t elfsz, size_t elfnotes_sz,
|
||||
loff_t vmcore_off;
|
||||
struct vmcore *m;
|
||||
|
||||
/* Skip Elf header, program headers and Elf note segment. */
|
||||
/* Skip ELF header, program headers and ELF note segment. */
|
||||
vmcore_off = elfsz + elfnotes_sz;
|
||||
|
||||
list_for_each_entry(m, vc_list, list) {
|
||||
@ -1213,7 +1213,7 @@ static int __init parse_crash_elf64_headers(void)
|
||||
|
||||
addr = elfcorehdr_addr;
|
||||
|
||||
/* Read Elf header */
|
||||
/* Read ELF header */
|
||||
rc = elfcorehdr_read((char *)&ehdr, sizeof(Elf64_Ehdr), &addr);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
@ -1269,7 +1269,7 @@ static int __init parse_crash_elf32_headers(void)
|
||||
|
||||
addr = elfcorehdr_addr;
|
||||
|
||||
/* Read Elf header */
|
||||
/* Read ELF header */
|
||||
rc = elfcorehdr_read((char *)&ehdr, sizeof(Elf32_Ehdr), &addr);
|
||||
if (rc < 0)
|
||||
return rc;
|
||||
@ -1376,12 +1376,12 @@ static void vmcoredd_write_header(void *buf, struct vmcoredd_data *data,
|
||||
}
|
||||
|
||||
/**
|
||||
* vmcoredd_update_program_headers - Update all Elf program headers
|
||||
* vmcoredd_update_program_headers - Update all ELF program headers
|
||||
* @elfptr: Pointer to elf header
|
||||
* @elfnotesz: Size of elf notes aligned to page size
|
||||
* @vmcoreddsz: Size of device dumps to be added to elf note header
|
||||
*
|
||||
* Determine type of Elf header (Elf64 or Elf32) and update the elf note size.
|
||||
* Determine type of ELF header (Elf64 or Elf32) and update the elf note size.
|
||||
* Also update the offsets of all the program headers after the elf note header.
|
||||
*/
|
||||
static void vmcoredd_update_program_headers(char *elfptr, size_t elfnotesz,
|
||||
@ -1439,10 +1439,10 @@ static void vmcoredd_update_program_headers(char *elfptr, size_t elfnotesz,
|
||||
|
||||
/**
|
||||
* vmcoredd_update_size - Update the total size of the device dumps and update
|
||||
* Elf header
|
||||
* ELF header
|
||||
* @dump_size: Size of the current device dump to be added to total size
|
||||
*
|
||||
* Update the total size of all the device dumps and update the Elf program
|
||||
* Update the total size of all the device dumps and update the ELF program
|
||||
* headers. Calculate the new offsets for the vmcore list and update the
|
||||
* total vmcore size.
|
||||
*/
|
||||
@ -1466,7 +1466,7 @@ static void vmcoredd_update_size(size_t dump_size)
|
||||
* @data: dump info.
|
||||
*
|
||||
* Allocate a buffer and invoke the calling driver's dump collect routine.
|
||||
* Write Elf note at the beginning of the buffer to indicate vmcore device
|
||||
* Write ELF note at the beginning of the buffer to indicate vmcore device
|
||||
* dump and add the dump to global list.
|
||||
*/
|
||||
int vmcore_add_device_dump(struct vmcoredd_data *data)
|
||||
|
||||
@ -48,10 +48,13 @@ struct task_delay_info {
|
||||
u64 wpcopy_start;
|
||||
u64 wpcopy_delay; /* wait for write-protect copy */
|
||||
|
||||
u64 irq_delay; /* wait for IRQ/SOFTIRQ */
|
||||
|
||||
u32 freepages_count; /* total count of memory reclaim */
|
||||
u32 thrashing_count; /* total count of thrash waits */
|
||||
u32 compact_count; /* total count of memory compact */
|
||||
u32 wpcopy_count; /* total count of write-protect copy */
|
||||
u32 irq_count; /* total count of IRQ/SOFTIRQ */
|
||||
};
|
||||
#endif
|
||||
|
||||
@ -81,6 +84,7 @@ extern void __delayacct_compact_start(void);
|
||||
extern void __delayacct_compact_end(void);
|
||||
extern void __delayacct_wpcopy_start(void);
|
||||
extern void __delayacct_wpcopy_end(void);
|
||||
extern void __delayacct_irq(struct task_struct *task, u32 delta);
|
||||
|
||||
static inline void delayacct_tsk_init(struct task_struct *tsk)
|
||||
{
|
||||
@ -215,6 +219,15 @@ static inline void delayacct_wpcopy_end(void)
|
||||
__delayacct_wpcopy_end();
|
||||
}
|
||||
|
||||
static inline void delayacct_irq(struct task_struct *task, u32 delta)
|
||||
{
|
||||
if (!static_branch_unlikely(&delayacct_key))
|
||||
return;
|
||||
|
||||
if (task->delays)
|
||||
__delayacct_irq(task, delta);
|
||||
}
|
||||
|
||||
#else
|
||||
static inline void delayacct_init(void)
|
||||
{}
|
||||
@ -253,6 +266,8 @@ static inline void delayacct_wpcopy_start(void)
|
||||
{}
|
||||
static inline void delayacct_wpcopy_end(void)
|
||||
{}
|
||||
static inline void delayacct_irq(struct task_struct *task, u32 delta)
|
||||
{}
|
||||
|
||||
#endif /* CONFIG_TASK_DELAY_ACCT */
|
||||
|
||||
|
||||
35
include/linux/hex.h
Normal file
35
include/linux/hex.h
Normal file
@ -0,0 +1,35 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#ifndef _LINUX_HEX_H
|
||||
#define _LINUX_HEX_H
|
||||
|
||||
#include <linux/types.h>
|
||||
|
||||
extern const char hex_asc[];
|
||||
#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
|
||||
#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
|
||||
|
||||
static inline char *hex_byte_pack(char *buf, u8 byte)
|
||||
{
|
||||
*buf++ = hex_asc_hi(byte);
|
||||
*buf++ = hex_asc_lo(byte);
|
||||
return buf;
|
||||
}
|
||||
|
||||
extern const char hex_asc_upper[];
|
||||
#define hex_asc_upper_lo(x) hex_asc_upper[((x) & 0x0f)]
|
||||
#define hex_asc_upper_hi(x) hex_asc_upper[((x) & 0xf0) >> 4]
|
||||
|
||||
static inline char *hex_byte_pack_upper(char *buf, u8 byte)
|
||||
{
|
||||
*buf++ = hex_asc_upper_hi(byte);
|
||||
*buf++ = hex_asc_upper_lo(byte);
|
||||
return buf;
|
||||
}
|
||||
|
||||
extern int hex_to_bin(unsigned char ch);
|
||||
extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
|
||||
extern char *bin2hex(char *dst, const void *src, size_t count);
|
||||
|
||||
bool mac_pton(const char *s, u8 *mac);
|
||||
|
||||
#endif
|
||||
@ -20,6 +20,7 @@
|
||||
#include <linux/compiler.h>
|
||||
#include <linux/container_of.h>
|
||||
#include <linux/bitops.h>
|
||||
#include <linux/hex.h>
|
||||
#include <linux/kstrtox.h>
|
||||
#include <linux/log2.h>
|
||||
#include <linux/math.h>
|
||||
@ -263,34 +264,6 @@ extern enum system_states {
|
||||
SYSTEM_SUSPEND,
|
||||
} system_state;
|
||||
|
||||
extern const char hex_asc[];
|
||||
#define hex_asc_lo(x) hex_asc[((x) & 0x0f)]
|
||||
#define hex_asc_hi(x) hex_asc[((x) & 0xf0) >> 4]
|
||||
|
||||
static inline char *hex_byte_pack(char *buf, u8 byte)
|
||||
{
|
||||
*buf++ = hex_asc_hi(byte);
|
||||
*buf++ = hex_asc_lo(byte);
|
||||
return buf;
|
||||
}
|
||||
|
||||
extern const char hex_asc_upper[];
|
||||
#define hex_asc_upper_lo(x) hex_asc_upper[((x) & 0x0f)]
|
||||
#define hex_asc_upper_hi(x) hex_asc_upper[((x) & 0xf0) >> 4]
|
||||
|
||||
static inline char *hex_byte_pack_upper(char *buf, u8 byte)
|
||||
{
|
||||
*buf++ = hex_asc_upper_hi(byte);
|
||||
*buf++ = hex_asc_upper_lo(byte);
|
||||
return buf;
|
||||
}
|
||||
|
||||
extern int hex_to_bin(unsigned char ch);
|
||||
extern int __must_check hex2bin(u8 *dst, const char *src, size_t count);
|
||||
extern char *bin2hex(char *dst, const void *src, size_t count);
|
||||
|
||||
bool mac_pton(const char *s, u8 *mac);
|
||||
|
||||
/*
|
||||
* General tracing related utility functions - trace_printk(),
|
||||
* tracing_on/tracing_off and tracing_start()/tracing_stop
|
||||
|
||||
@ -190,7 +190,6 @@ int kexec_purgatory_get_set_symbol(struct kimage *image, const char *name,
|
||||
void *buf, unsigned int size,
|
||||
bool get_value);
|
||||
void *kexec_purgatory_get_symbol_addr(struct kimage *image, const char *name);
|
||||
void *kexec_image_load_default(struct kimage *image);
|
||||
|
||||
#ifndef arch_kexec_kernel_image_probe
|
||||
static inline int
|
||||
@ -207,13 +206,6 @@ static inline int arch_kimage_file_post_load_cleanup(struct kimage *image)
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef arch_kexec_kernel_image_load
|
||||
static inline void *arch_kexec_kernel_image_load(struct kimage *image)
|
||||
{
|
||||
return kexec_image_load_default(image);
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_KEXEC_SIG
|
||||
#ifdef CONFIG_SIGNED_PE_FILE_VERIFICATION
|
||||
int kexec_kernel_verify_pe_sig(const char *kernel, unsigned long kernel_len);
|
||||
|
||||
@ -27,4 +27,11 @@ typedef union {
|
||||
long long ll;
|
||||
} DWunion;
|
||||
|
||||
long long notrace __ashldi3(long long u, word_type b);
|
||||
long long notrace __ashrdi3(long long u, word_type b);
|
||||
word_type notrace __cmpdi2(long long a, long long b);
|
||||
long long notrace __lshrdi3(long long u, word_type b);
|
||||
long long notrace __muldi3(long long u, long long v);
|
||||
word_type notrace __ucmpdi2(unsigned long long a, unsigned long long b);
|
||||
|
||||
#endif /* __ASM_LIBGCC_H */
|
||||
|
||||
@ -156,13 +156,13 @@ RB_DECLARE_CALLBACKS(RBSTATIC, RBNAME, \
|
||||
|
||||
static inline void rb_set_parent(struct rb_node *rb, struct rb_node *p)
|
||||
{
|
||||
rb->__rb_parent_color = rb_color(rb) | (unsigned long)p;
|
||||
rb->__rb_parent_color = rb_color(rb) + (unsigned long)p;
|
||||
}
|
||||
|
||||
static inline void rb_set_parent_color(struct rb_node *rb,
|
||||
struct rb_node *p, int color)
|
||||
{
|
||||
rb->__rb_parent_color = (unsigned long)p | color;
|
||||
rb->__rb_parent_color = (unsigned long)p + color;
|
||||
}
|
||||
|
||||
static inline void
|
||||
|
||||
69
include/trace/events/notifier.h
Normal file
69
include/trace/events/notifier.h
Normal file
@ -0,0 +1,69 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#undef TRACE_SYSTEM
|
||||
#define TRACE_SYSTEM notifier
|
||||
|
||||
#if !defined(_TRACE_NOTIFIERS_H) || defined(TRACE_HEADER_MULTI_READ)
|
||||
#define _TRACE_NOTIFIERS_H
|
||||
|
||||
#include <linux/tracepoint.h>
|
||||
|
||||
DECLARE_EVENT_CLASS(notifier_info,
|
||||
|
||||
TP_PROTO(void *cb),
|
||||
|
||||
TP_ARGS(cb),
|
||||
|
||||
TP_STRUCT__entry(
|
||||
__field(void *, cb)
|
||||
),
|
||||
|
||||
TP_fast_assign(
|
||||
__entry->cb = cb;
|
||||
),
|
||||
|
||||
TP_printk("%ps", __entry->cb)
|
||||
);
|
||||
|
||||
/*
|
||||
* notifier_register - called upon notifier callback registration
|
||||
*
|
||||
* @cb: callback pointer
|
||||
*
|
||||
*/
|
||||
DEFINE_EVENT(notifier_info, notifier_register,
|
||||
|
||||
TP_PROTO(void *cb),
|
||||
|
||||
TP_ARGS(cb)
|
||||
);
|
||||
|
||||
/*
|
||||
* notifier_unregister - called upon notifier callback unregistration
|
||||
*
|
||||
* @cb: callback pointer
|
||||
*
|
||||
*/
|
||||
DEFINE_EVENT(notifier_info, notifier_unregister,
|
||||
|
||||
TP_PROTO(void *cb),
|
||||
|
||||
TP_ARGS(cb)
|
||||
);
|
||||
|
||||
/*
|
||||
* notifier_run - called upon notifier callback execution
|
||||
*
|
||||
* @cb: callback pointer
|
||||
*
|
||||
*/
|
||||
DEFINE_EVENT(notifier_info, notifier_run,
|
||||
|
||||
TP_PROTO(void *cb),
|
||||
|
||||
TP_ARGS(cb)
|
||||
);
|
||||
|
||||
#endif /* _TRACE_NOTIFIERS_H */
|
||||
|
||||
/* This part must be outside protection */
|
||||
#include <trace/define_trace.h>
|
||||
@ -28,7 +28,7 @@
|
||||
#define _BITUL(x) (_UL(1) << (x))
|
||||
#define _BITULL(x) (_ULL(1) << (x))
|
||||
|
||||
#define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (typeof(x))(a) - 1)
|
||||
#define __ALIGN_KERNEL(x, a) __ALIGN_KERNEL_MASK(x, (__typeof__(x))(a) - 1)
|
||||
#define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
|
||||
|
||||
#define __KERNEL_DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
|
||||
|
||||
@ -34,7 +34,7 @@
|
||||
*/
|
||||
|
||||
|
||||
#define TASKSTATS_VERSION 13
|
||||
#define TASKSTATS_VERSION 14
|
||||
#define TS_COMM_LEN 32 /* should be >= TASK_COMM_LEN
|
||||
* in linux/sched.h */
|
||||
|
||||
@ -198,6 +198,10 @@ struct taskstats {
|
||||
/* v13: Delay waiting for write-protect copy */
|
||||
__u64 wpcopy_count;
|
||||
__u64 wpcopy_delay_total;
|
||||
|
||||
/* v14: Delay waiting for IRQ/SOFTIRQ */
|
||||
__u64 irq_count;
|
||||
__u64 irq_delay_total;
|
||||
};
|
||||
|
||||
|
||||
|
||||
@ -179,12 +179,15 @@ int delayacct_add_tsk(struct taskstats *d, struct task_struct *tsk)
|
||||
d->compact_delay_total = (tmp < d->compact_delay_total) ? 0 : tmp;
|
||||
tmp = d->wpcopy_delay_total + tsk->delays->wpcopy_delay;
|
||||
d->wpcopy_delay_total = (tmp < d->wpcopy_delay_total) ? 0 : tmp;
|
||||
tmp = d->irq_delay_total + tsk->delays->irq_delay;
|
||||
d->irq_delay_total = (tmp < d->irq_delay_total) ? 0 : tmp;
|
||||
d->blkio_count += tsk->delays->blkio_count;
|
||||
d->swapin_count += tsk->delays->swapin_count;
|
||||
d->freepages_count += tsk->delays->freepages_count;
|
||||
d->thrashing_count += tsk->delays->thrashing_count;
|
||||
d->compact_count += tsk->delays->compact_count;
|
||||
d->wpcopy_count += tsk->delays->wpcopy_count;
|
||||
d->irq_count += tsk->delays->irq_count;
|
||||
raw_spin_unlock_irqrestore(&tsk->delays->lock, flags);
|
||||
|
||||
return 0;
|
||||
@ -274,3 +277,14 @@ void __delayacct_wpcopy_end(void)
|
||||
¤t->delays->wpcopy_delay,
|
||||
¤t->delays->wpcopy_count);
|
||||
}
|
||||
|
||||
void __delayacct_irq(struct task_struct *task, u32 delta)
|
||||
{
|
||||
unsigned long flags;
|
||||
|
||||
raw_spin_lock_irqsave(&task->delays->lock, flags);
|
||||
task->delays->irq_delay += delta;
|
||||
task->delays->irq_count++;
|
||||
raw_spin_unlock_irqrestore(&task->delays->lock, flags);
|
||||
}
|
||||
|
||||
|
||||
@ -28,7 +28,7 @@
|
||||
/*
|
||||
* The number of tasks checked:
|
||||
*/
|
||||
int __read_mostly sysctl_hung_task_check_count = PID_MAX_LIMIT;
|
||||
static int __read_mostly sysctl_hung_task_check_count = PID_MAX_LIMIT;
|
||||
|
||||
/*
|
||||
* Limit number of tasks checked in a batch.
|
||||
@ -47,9 +47,9 @@ unsigned long __read_mostly sysctl_hung_task_timeout_secs = CONFIG_DEFAULT_HUNG_
|
||||
/*
|
||||
* Zero (default value) means use sysctl_hung_task_timeout_secs:
|
||||
*/
|
||||
unsigned long __read_mostly sysctl_hung_task_check_interval_secs;
|
||||
static unsigned long __read_mostly sysctl_hung_task_check_interval_secs;
|
||||
|
||||
int __read_mostly sysctl_hung_task_warnings = 10;
|
||||
static int __read_mostly sysctl_hung_task_warnings = 10;
|
||||
|
||||
static int __read_mostly did_panic;
|
||||
static bool hung_task_show_lock;
|
||||
@ -72,8 +72,8 @@ static unsigned int __read_mostly sysctl_hung_task_all_cpu_backtrace;
|
||||
* Should we panic (and reboot, if panic_timeout= is set) when a
|
||||
* hung task is detected:
|
||||
*/
|
||||
unsigned int __read_mostly sysctl_hung_task_panic =
|
||||
IS_ENABLED(CONFIG_BOOTPARAM_HUNG_TASK_PANIC);
|
||||
static unsigned int __read_mostly sysctl_hung_task_panic =
|
||||
IS_ENABLED(CONFIG_BOOTPARAM_HUNG_TASK_PANIC);
|
||||
|
||||
static int
|
||||
hung_task_panic(struct notifier_block *this, unsigned long event, void *ptr)
|
||||
|
||||
@ -65,7 +65,7 @@ int kexec_image_probe_default(struct kimage *image, void *buf,
|
||||
return ret;
|
||||
}
|
||||
|
||||
void *kexec_image_load_default(struct kimage *image)
|
||||
static void *kexec_image_load_default(struct kimage *image)
|
||||
{
|
||||
if (!image->fops || !image->fops->load)
|
||||
return ERR_PTR(-ENOEXEC);
|
||||
@ -249,8 +249,8 @@ kimage_file_prepare_segments(struct kimage *image, int kernel_fd, int initrd_fd,
|
||||
/* IMA needs to pass the measurement list to the next kernel. */
|
||||
ima_add_kexec_buffer(image);
|
||||
|
||||
/* Call arch image load handlers */
|
||||
ldata = arch_kexec_kernel_image_load(image);
|
||||
/* Call image load handler */
|
||||
ldata = kexec_image_load_default(image);
|
||||
|
||||
if (IS_ERR(ldata)) {
|
||||
ret = PTR_ERR(ldata);
|
||||
|
||||
@ -7,6 +7,9 @@
|
||||
#include <linux/vmalloc.h>
|
||||
#include <linux/reboot.h>
|
||||
|
||||
#define CREATE_TRACE_POINTS
|
||||
#include <trace/events/notifier.h>
|
||||
|
||||
/*
|
||||
* Notifier list for kernel code which wants to be called
|
||||
* at shutdown. This is used to stop any idling DMA operations
|
||||
@ -37,6 +40,7 @@ static int notifier_chain_register(struct notifier_block **nl,
|
||||
}
|
||||
n->next = *nl;
|
||||
rcu_assign_pointer(*nl, n);
|
||||
trace_notifier_register((void *)n->notifier_call);
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -46,6 +50,7 @@ static int notifier_chain_unregister(struct notifier_block **nl,
|
||||
while ((*nl) != NULL) {
|
||||
if ((*nl) == n) {
|
||||
rcu_assign_pointer(*nl, n->next);
|
||||
trace_notifier_unregister((void *)n->notifier_call);
|
||||
return 0;
|
||||
}
|
||||
nl = &((*nl)->next);
|
||||
@ -84,6 +89,7 @@ static int notifier_call_chain(struct notifier_block **nl,
|
||||
continue;
|
||||
}
|
||||
#endif
|
||||
trace_notifier_run((void *)nb->notifier_call);
|
||||
ret = nb->notifier_call(nb, val, v);
|
||||
|
||||
if (nr_calls)
|
||||
|
||||
@ -704,6 +704,7 @@ static void update_rq_clock_task(struct rq *rq, s64 delta)
|
||||
rq->prev_irq_time += irq_delta;
|
||||
delta -= irq_delta;
|
||||
psi_account_irqtime(rq->curr, irq_delta);
|
||||
delayacct_irq(rq->curr, irq_delta);
|
||||
#endif
|
||||
#ifdef CONFIG_PARAVIRT_TIME_ACCOUNTING
|
||||
if (static_key_false((¶virt_steal_rq_enabled))) {
|
||||
|
||||
@ -163,7 +163,7 @@ out:
|
||||
|
||||
/**
|
||||
* build_id_parse_buf - Get build ID from a buffer
|
||||
* @buf: Elf note section(s) to parse
|
||||
* @buf: ELF note section(s) to parse
|
||||
* @buf_size: Size of @buf in bytes
|
||||
* @build_id: Build ID parsed from @buf, at least BUILD_ID_SIZE_MAX long
|
||||
*
|
||||
|
||||
@ -58,7 +58,7 @@
|
||||
|
||||
static inline void rb_set_black(struct rb_node *rb)
|
||||
{
|
||||
rb->__rb_parent_color |= RB_BLACK;
|
||||
rb->__rb_parent_color += RB_BLACK;
|
||||
}
|
||||
|
||||
static inline struct rb_node *rb_red_parent(struct rb_node *red)
|
||||
|
||||
@ -587,7 +587,7 @@ static int __init test_string_helpers_init(void)
|
||||
for (i = 0; i < UNESCAPE_ALL_MASK + 1; i++)
|
||||
test_string_unescape("unescape", i, false);
|
||||
test_string_unescape("unescape inplace",
|
||||
get_random_u32_below(UNESCAPE_ANY + 1), true);
|
||||
get_random_u32_below(UNESCAPE_ALL_MASK + 1), true);
|
||||
|
||||
/* Without dictionary */
|
||||
for (i = 0; i < ESCAPE_ALL_MASK + 1; i++)
|
||||
|
||||
@ -49,6 +49,7 @@ EXPORT_SYMBOL(kfree_const);
|
||||
*
|
||||
* Return: newly allocated copy of @s or %NULL in case of error
|
||||
*/
|
||||
noinline
|
||||
char *kstrdup(const char *s, gfp_t gfp)
|
||||
{
|
||||
size_t len;
|
||||
|
||||
@ -620,6 +620,22 @@ our $signature_tags = qr{(?xi:
|
||||
Cc:
|
||||
)};
|
||||
|
||||
our @link_tags = qw(Link Closes);
|
||||
|
||||
#Create a search and print patterns for all these strings to be used directly below
|
||||
our $link_tags_search = "";
|
||||
our $link_tags_print = "";
|
||||
foreach my $entry (@link_tags) {
|
||||
if ($link_tags_search ne "") {
|
||||
$link_tags_search .= '|';
|
||||
$link_tags_print .= ' or ';
|
||||
}
|
||||
$entry .= ':';
|
||||
$link_tags_search .= $entry;
|
||||
$link_tags_print .= "'$entry'";
|
||||
}
|
||||
$link_tags_search = "(?:${link_tags_search})";
|
||||
|
||||
our $tracing_logging_tags = qr{(?xi:
|
||||
[=-]*> |
|
||||
<[=-]* |
|
||||
@ -3158,14 +3174,14 @@ sub process {
|
||||
}
|
||||
}
|
||||
|
||||
# check if Reported-by: is followed by a Link:
|
||||
# check if Reported-by: is followed by a Closes: tag
|
||||
if ($sign_off =~ /^reported(?:|-and-tested)-by:$/i) {
|
||||
if (!defined $lines[$linenr]) {
|
||||
WARN("BAD_REPORTED_BY_LINK",
|
||||
"Reported-by: should be immediately followed by Link: to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
|
||||
} elsif ($rawlines[$linenr] !~ m{^link:\s*https?://}i) {
|
||||
"Reported-by: should be immediately followed by Closes: with a URL to the report\n" . $herecurr . "\n");
|
||||
} elsif ($rawlines[$linenr] !~ /^closes:\s*/i) {
|
||||
WARN("BAD_REPORTED_BY_LINK",
|
||||
"Reported-by: should be immediately followed by Link: with a URL to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
|
||||
"Reported-by: should be immediately followed by Closes: with a URL to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -3250,8 +3266,8 @@ sub process {
|
||||
# file delta changes
|
||||
$line =~ /^\s*(?:[\w\.\-\+]*\/)++[\w\.\-\+]+:/ ||
|
||||
# filename then :
|
||||
$line =~ /^\s*(?:Fixes:|Link:|$signature_tags)/i ||
|
||||
# A Fixes: or Link: line or signature tag line
|
||||
$line =~ /^\s*(?:Fixes:|$link_tags_search|$signature_tags)/i ||
|
||||
# A Fixes:, link or signature tag line
|
||||
$commit_log_possible_stack_dump)) {
|
||||
WARN("COMMIT_LOG_LONG_LINE",
|
||||
"Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
|
||||
@ -3266,13 +3282,24 @@ sub process {
|
||||
|
||||
# Check for odd tags before a URI/URL
|
||||
if ($in_commit_log &&
|
||||
$line =~ /^\s*(\w+):\s*http/ && $1 ne 'Link') {
|
||||
$line =~ /^\s*(\w+:)\s*http/ && $1 !~ /^$link_tags_search$/) {
|
||||
if ($1 =~ /^v(?:ersion)?\d+/i) {
|
||||
WARN("COMMIT_LOG_VERSIONING",
|
||||
"Patch version information should be after the --- line\n" . $herecurr);
|
||||
} else {
|
||||
WARN("COMMIT_LOG_USE_LINK",
|
||||
"Unknown link reference '$1:', use 'Link:' instead\n" . $herecurr);
|
||||
"Unknown link reference '$1', use $link_tags_print instead\n" . $herecurr);
|
||||
}
|
||||
}
|
||||
|
||||
# Check for misuse of the link tags
|
||||
if ($in_commit_log &&
|
||||
$line =~ /^\s*(\w+:)\s*(\S+)/) {
|
||||
my $tag = $1;
|
||||
my $value = $2;
|
||||
if ($tag =~ /^$link_tags_search$/ && $value !~ m{^https?://}) {
|
||||
WARN("COMMIT_LOG_WRONG_LINK",
|
||||
"'$tag' should be followed by a public http(s) link\n" . $herecurr);
|
||||
}
|
||||
}
|
||||
|
||||
@ -3736,7 +3763,7 @@ sub process {
|
||||
"'$spdx_license' is not supported in LICENSES/...\n" . $herecurr);
|
||||
}
|
||||
if ($realfile =~ m@^Documentation/devicetree/bindings/@ &&
|
||||
not $spdx_license =~ /GPL-2\.0.*BSD-2-Clause/) {
|
||||
$spdx_license !~ /GPL-2\.0(?:-only)? OR BSD-2-Clause/) {
|
||||
my $msg_level = \&WARN;
|
||||
$msg_level = \&CHK if ($file);
|
||||
if (&{$msg_level}("SPDX_LICENSE_TAG",
|
||||
@ -3746,6 +3773,11 @@ sub process {
|
||||
$fixed[$fixlinenr] =~ s/SPDX-License-Identifier: .*/SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)/;
|
||||
}
|
||||
}
|
||||
if ($realfile =~ m@^include/dt-bindings/@ &&
|
||||
$spdx_license !~ /GPL-2\.0(?:-only)? OR \S+/) {
|
||||
WARN("SPDX_LICENSE_TAG",
|
||||
"DT binding headers should be licensed (GPL-2.0-only OR .*)\n" . $herecurr);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -5809,6 +5841,8 @@ sub process {
|
||||
$var !~ /^(?:[A-Z]+_){1,5}[A-Z]{1,3}[a-z]/ &&
|
||||
#Ignore Page<foo> variants
|
||||
$var !~ /^(?:Clear|Set|TestClear|TestSet|)Page[A-Z]/ &&
|
||||
#Ignore ETHTOOL_LINK_MODE_<foo> variants
|
||||
$var !~ /^ETHTOOL_LINK_MODE_/ &&
|
||||
#Ignore SI style variants like nS, mV and dB
|
||||
#(ie: max_uV, regulator_min_uA_show, RANGE_mA_VALUE)
|
||||
$var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&
|
||||
|
||||
@ -41,6 +41,8 @@ are cached and potentially out of date"""
|
||||
self.show_subtree(child, level + 1)
|
||||
|
||||
def invoke(self, arg, from_tty):
|
||||
if utils.gdb_eval_or_none("clk_root_list") is None:
|
||||
raise gdb.GdbError("No clocks registered")
|
||||
gdb.write(" enable prepare protect \n")
|
||||
gdb.write(" clock count count count rate \n")
|
||||
gdb.write("------------------------------------------------------------------------\n")
|
||||
|
||||
@ -15,8 +15,10 @@
|
||||
#include <linux/clk-provider.h>
|
||||
#include <linux/fs.h>
|
||||
#include <linux/hrtimer.h>
|
||||
#include <linux/irq.h>
|
||||
#include <linux/mount.h>
|
||||
#include <linux/of_fdt.h>
|
||||
#include <linux/radix-tree.h>
|
||||
#include <linux/threads.h>
|
||||
|
||||
/* We need to stringify expanded macros so that they can be parsed */
|
||||
@ -39,6 +41,8 @@
|
||||
|
||||
import gdb
|
||||
|
||||
LX_CONFIG(CONFIG_DEBUG_INFO_REDUCED)
|
||||
|
||||
/* linux/clk-provider.h */
|
||||
if IS_BUILTIN(CONFIG_COMMON_CLK):
|
||||
LX_GDBPARSED(CLK_GET_RATE_NOCACHE)
|
||||
@ -54,6 +58,10 @@ LX_VALUE(SB_NODIRATIME)
|
||||
/* linux/htimer.h */
|
||||
LX_GDBPARSED(hrtimer_resolution)
|
||||
|
||||
/* linux/irq.h */
|
||||
LX_GDBPARSED(IRQD_LEVEL)
|
||||
LX_GDBPARSED(IRQ_HIDDEN)
|
||||
|
||||
/* linux/module.h */
|
||||
LX_GDBPARSED(MOD_TEXT)
|
||||
|
||||
@ -71,6 +79,13 @@ LX_VALUE(NR_CPUS)
|
||||
/* linux/of_fdt.h> */
|
||||
LX_VALUE(OF_DT_HEADER)
|
||||
|
||||
/* linux/radix-tree.h */
|
||||
LX_GDBPARSED(RADIX_TREE_ENTRY_MASK)
|
||||
LX_GDBPARSED(RADIX_TREE_INTERNAL_NODE)
|
||||
LX_GDBPARSED(RADIX_TREE_MAP_SIZE)
|
||||
LX_GDBPARSED(RADIX_TREE_MAP_SHIFT)
|
||||
LX_GDBPARSED(RADIX_TREE_MAP_MASK)
|
||||
|
||||
/* Kernel Configs */
|
||||
LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS)
|
||||
LX_CONFIG(CONFIG_GENERIC_CLOCKEVENTS_BROADCAST)
|
||||
@ -78,3 +93,12 @@ LX_CONFIG(CONFIG_HIGH_RES_TIMERS)
|
||||
LX_CONFIG(CONFIG_NR_CPUS)
|
||||
LX_CONFIG(CONFIG_OF)
|
||||
LX_CONFIG(CONFIG_TICK_ONESHOT)
|
||||
LX_CONFIG(CONFIG_GENERIC_IRQ_SHOW_LEVEL)
|
||||
LX_CONFIG(CONFIG_X86_LOCAL_APIC)
|
||||
LX_CONFIG(CONFIG_SMP)
|
||||
LX_CONFIG(CONFIG_X86_THERMAL_VECTOR)
|
||||
LX_CONFIG(CONFIG_X86_MCE_THRESHOLD)
|
||||
LX_CONFIG(CONFIG_X86_MCE_AMD)
|
||||
LX_CONFIG(CONFIG_X86_MCE)
|
||||
LX_CONFIG(CONFIG_X86_IO_APIC)
|
||||
LX_CONFIG(CONFIG_HAVE_KVM)
|
||||
|
||||
@ -163,16 +163,22 @@ def get_current_task(cpu):
|
||||
task_ptr_type = task_type.get_type().pointer()
|
||||
|
||||
if utils.is_target_arch("x86"):
|
||||
var_ptr = gdb.parse_and_eval("&pcpu_hot.current_task")
|
||||
return per_cpu(var_ptr, cpu).dereference()
|
||||
if gdb.lookup_global_symbol("cpu_tasks"):
|
||||
# This is a UML kernel, which stores the current task
|
||||
# differently than other x86 sub architectures
|
||||
var_ptr = gdb.parse_and_eval("(struct task_struct *)cpu_tasks[0].task")
|
||||
return var_ptr.dereference()
|
||||
else:
|
||||
var_ptr = gdb.parse_and_eval("&pcpu_hot.current_task")
|
||||
return per_cpu(var_ptr, cpu).dereference()
|
||||
elif utils.is_target_arch("aarch64"):
|
||||
current_task_addr = gdb.parse_and_eval("$SP_EL0")
|
||||
if((current_task_addr >> 63) != 0):
|
||||
current_task = current_task_addr.cast(task_ptr_type)
|
||||
return current_task.dereference()
|
||||
else:
|
||||
raise gdb.GdbError("Sorry, obtaining the current task is not allowed "
|
||||
"while running in userspace(EL0)")
|
||||
current_task_addr = gdb.parse_and_eval("$SP_EL0")
|
||||
if (current_task_addr >> 63) != 0:
|
||||
current_task = current_task_addr.cast(task_ptr_type)
|
||||
return current_task.dereference()
|
||||
else:
|
||||
raise gdb.GdbError("Sorry, obtaining the current task is not allowed "
|
||||
"while running in userspace(EL0)")
|
||||
else:
|
||||
raise gdb.GdbError("Sorry, obtaining the current task is not yet "
|
||||
"supported with this arch")
|
||||
|
||||
@ -5,7 +5,7 @@
|
||||
import gdb
|
||||
import sys
|
||||
|
||||
from linux.utils import CachedType
|
||||
from linux.utils import CachedType, gdb_eval_or_none
|
||||
from linux.lists import list_for_each_entry
|
||||
|
||||
generic_pm_domain_type = CachedType('struct generic_pm_domain')
|
||||
@ -70,6 +70,8 @@ Output is similar to /sys/kernel/debug/pm_genpd/pm_genpd_summary'''
|
||||
gdb.write(' %-50s %s\n' % (kobj_path, rtpm_status_str(dev)))
|
||||
|
||||
def invoke(self, arg, from_tty):
|
||||
if gdb_eval_or_none("&gpd_list") is None:
|
||||
raise gdb.GdbError("No power domain(s) registered")
|
||||
gdb.write('domain status children\n');
|
||||
gdb.write(' /device runtime status\n');
|
||||
gdb.write('----------------------------------------------------------------------\n');
|
||||
|
||||
232
scripts/gdb/linux/interrupts.py
Normal file
232
scripts/gdb/linux/interrupts.py
Normal file
@ -0,0 +1,232 @@
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
#
|
||||
# Copyright 2023 Broadcom
|
||||
|
||||
import gdb
|
||||
|
||||
from linux import constants
|
||||
from linux import cpus
|
||||
from linux import utils
|
||||
from linux import radixtree
|
||||
|
||||
irq_desc_type = utils.CachedType("struct irq_desc")
|
||||
|
||||
def irq_settings_is_hidden(desc):
|
||||
return desc['status_use_accessors'] & constants.LX_IRQ_HIDDEN
|
||||
|
||||
def irq_desc_is_chained(desc):
|
||||
return desc['action'] and desc['action'] == gdb.parse_and_eval("&chained_action")
|
||||
|
||||
def irqd_is_level(desc):
|
||||
return desc['irq_data']['common']['state_use_accessors'] & constants.LX_IRQD_LEVEL
|
||||
|
||||
def show_irq_desc(prec, irq):
|
||||
text = ""
|
||||
|
||||
desc = radixtree.lookup(gdb.parse_and_eval("&irq_desc_tree"), irq)
|
||||
if desc is None:
|
||||
return text
|
||||
|
||||
desc = desc.cast(irq_desc_type.get_type())
|
||||
if desc is None:
|
||||
return text
|
||||
|
||||
if irq_settings_is_hidden(desc):
|
||||
return text
|
||||
|
||||
any_count = 0
|
||||
if desc['kstat_irqs']:
|
||||
for cpu in cpus.each_online_cpu():
|
||||
any_count += cpus.per_cpu(desc['kstat_irqs'], cpu)
|
||||
|
||||
if (desc['action'] == 0 or irq_desc_is_chained(desc)) and any_count == 0:
|
||||
return text;
|
||||
|
||||
text += "%*d: " % (prec, irq)
|
||||
for cpu in cpus.each_online_cpu():
|
||||
if desc['kstat_irqs']:
|
||||
count = cpus.per_cpu(desc['kstat_irqs'], cpu)
|
||||
else:
|
||||
count = 0
|
||||
text += "%10u" % (count)
|
||||
|
||||
name = "None"
|
||||
if desc['irq_data']['chip']:
|
||||
chip = desc['irq_data']['chip']
|
||||
if chip['name']:
|
||||
name = chip['name'].string()
|
||||
else:
|
||||
name = "-"
|
||||
|
||||
text += " %8s" % (name)
|
||||
|
||||
if desc['irq_data']['domain']:
|
||||
text += " %*lu" % (prec, desc['irq_data']['hwirq'])
|
||||
else:
|
||||
text += " %*s" % (prec, "")
|
||||
|
||||
if constants.LX_CONFIG_GENERIC_IRQ_SHOW_LEVEL:
|
||||
text += " %-8s" % ("Level" if irqd_is_level(desc) else "Edge")
|
||||
|
||||
if desc['name']:
|
||||
text += "-%-8s" % (desc['name'].string())
|
||||
|
||||
""" Some toolchains may not be able to provide information about irqaction """
|
||||
try:
|
||||
gdb.lookup_type("struct irqaction")
|
||||
action = desc['action']
|
||||
if action is not None:
|
||||
text += " %s" % (action['name'].string())
|
||||
while True:
|
||||
action = action['next']
|
||||
if action is not None:
|
||||
break
|
||||
if action['name']:
|
||||
text += ", %s" % (action['name'].string())
|
||||
except:
|
||||
pass
|
||||
|
||||
text += "\n"
|
||||
|
||||
return text
|
||||
|
||||
def show_irq_err_count(prec):
|
||||
cnt = utils.gdb_eval_or_none("irq_err_count")
|
||||
text = ""
|
||||
if cnt is not None:
|
||||
text += "%*s: %10u\n" % (prec, "ERR", cnt['counter'])
|
||||
return text
|
||||
|
||||
def x86_show_irqstat(prec, pfx, field, desc):
|
||||
irq_stat = gdb.parse_and_eval("&irq_stat")
|
||||
text = "%*s: " % (prec, pfx)
|
||||
for cpu in cpus.each_online_cpu():
|
||||
stat = cpus.per_cpu(irq_stat, cpu)
|
||||
text += "%10u " % (stat[field])
|
||||
text += " %s\n" % (desc)
|
||||
return text
|
||||
|
||||
def x86_show_mce(prec, var, pfx, desc):
|
||||
pvar = gdb.parse_and_eval(var)
|
||||
text = "%*s: " % (prec, pfx)
|
||||
for cpu in cpus.each_online_cpu():
|
||||
text += "%10u " % (cpus.per_cpu(pvar, cpu))
|
||||
text += " %s\n" % (desc)
|
||||
return text
|
||||
|
||||
def x86_show_interupts(prec):
|
||||
text = x86_show_irqstat(prec, "NMI", '__nmi_count', 'Non-maskable interrupts')
|
||||
|
||||
if constants.LX_CONFIG_X86_LOCAL_APIC:
|
||||
text += x86_show_irqstat(prec, "LOC", 'apic_timer_irqs', "Local timer interrupts")
|
||||
text += x86_show_irqstat(prec, "SPU", 'irq_spurious_count', "Spurious interrupts")
|
||||
text += x86_show_irqstat(prec, "PMI", 'apic_perf_irqs', "Performance monitoring interrupts")
|
||||
text += x86_show_irqstat(prec, "IWI", 'apic_irq_work_irqs', "IRQ work interrupts")
|
||||
text += x86_show_irqstat(prec, "RTR", 'icr_read_retry_count', "APIC ICR read retries")
|
||||
if utils.gdb_eval_or_none("x86_platform_ipi_callback") is not None:
|
||||
text += x86_show_irqstat(prec, "PLT", 'x86_platform_ipis', "Platform interrupts")
|
||||
|
||||
if constants.LX_CONFIG_SMP:
|
||||
text += x86_show_irqstat(prec, "RES", 'irq_resched_count', "Rescheduling interrupts")
|
||||
text += x86_show_irqstat(prec, "CAL", 'irq_call_count', "Function call interrupts")
|
||||
text += x86_show_irqstat(prec, "TLB", 'irq_tlb_count', "TLB shootdowns")
|
||||
|
||||
if constants.LX_CONFIG_X86_THERMAL_VECTOR:
|
||||
text += x86_show_irqstat(prec, "TRM", 'irq_thermal_count', "Thermal events interrupts")
|
||||
|
||||
if constants.LX_CONFIG_X86_MCE_THRESHOLD:
|
||||
text += x86_show_irqstat(prec, "THR", 'irq_threshold_count', "Threshold APIC interrupts")
|
||||
|
||||
if constants.LX_CONFIG_X86_MCE_AMD:
|
||||
text += x86_show_irqstat(prec, "DFR", 'irq_deferred_error_count', "Deferred Error APIC interrupts")
|
||||
|
||||
if constants.LX_CONFIG_X86_MCE:
|
||||
text += x86_show_mce(prec, "&mce_exception_count", "MCE", "Machine check exceptions")
|
||||
text == x86_show_mce(prec, "&mce_poll_count", "MCP", "Machine check polls")
|
||||
|
||||
text += show_irq_err_count(prec)
|
||||
|
||||
if constants.LX_CONFIG_X86_IO_APIC:
|
||||
cnt = utils.gdb_eval_or_none("irq_mis_count")
|
||||
if cnt is not None:
|
||||
text += "%*s: %10u\n" % (prec, "MIS", cnt['counter'])
|
||||
|
||||
if constants.LX_CONFIG_HAVE_KVM:
|
||||
text += x86_show_irqstat(prec, "PIN", 'kvm_posted_intr_ipis', 'Posted-interrupt notification event')
|
||||
text += x86_show_irqstat(prec, "NPI", 'kvm_posted_intr_nested_ipis', 'Nested posted-interrupt event')
|
||||
text += x86_show_irqstat(prec, "PIW", 'kvm_posted_intr_wakeup_ipis', 'Posted-interrupt wakeup event')
|
||||
|
||||
return text
|
||||
|
||||
def arm_common_show_interrupts(prec):
|
||||
text = ""
|
||||
nr_ipi = utils.gdb_eval_or_none("nr_ipi")
|
||||
ipi_desc = utils.gdb_eval_or_none("ipi_desc")
|
||||
ipi_types = utils.gdb_eval_or_none("ipi_types")
|
||||
if nr_ipi is None or ipi_desc is None or ipi_types is None:
|
||||
return text
|
||||
|
||||
if prec >= 4:
|
||||
sep = " "
|
||||
else:
|
||||
sep = ""
|
||||
|
||||
for ipi in range(nr_ipi):
|
||||
text += "%*s%u:%s" % (prec - 1, "IPI", ipi, sep)
|
||||
desc = ipi_desc[ipi].cast(irq_desc_type.get_type().pointer())
|
||||
if desc == 0:
|
||||
continue
|
||||
for cpu in cpus.each_online_cpu():
|
||||
text += "%10u" % (cpus.per_cpu(desc['kstat_irqs'], cpu))
|
||||
text += " %s" % (ipi_types[ipi].string())
|
||||
text += "\n"
|
||||
return text
|
||||
|
||||
def aarch64_show_interrupts(prec):
|
||||
text = arm_common_show_interrupts(prec)
|
||||
text += "%*s: %10lu\n" % (prec, "ERR", gdb.parse_and_eval("irq_err_count"))
|
||||
return text
|
||||
|
||||
def arch_show_interrupts(prec):
|
||||
text = ""
|
||||
if utils.is_target_arch("x86"):
|
||||
text += x86_show_interupts(prec)
|
||||
elif utils.is_target_arch("aarch64"):
|
||||
text += aarch64_show_interrupts(prec)
|
||||
elif utils.is_target_arch("arm"):
|
||||
text += arm_common_show_interrupts(prec)
|
||||
elif utils.is_target_arch("mips"):
|
||||
text += show_irq_err_count(prec)
|
||||
else:
|
||||
raise gdb.GdbError("Unsupported architecture: {}".format(target_arch))
|
||||
|
||||
return text
|
||||
|
||||
class LxInterruptList(gdb.Command):
|
||||
"""Print /proc/interrupts"""
|
||||
|
||||
def __init__(self):
|
||||
super(LxInterruptList, self).__init__("lx-interruptlist", gdb.COMMAND_DATA)
|
||||
|
||||
def invoke(self, arg, from_tty):
|
||||
nr_irqs = gdb.parse_and_eval("nr_irqs")
|
||||
prec = 3
|
||||
j = 1000
|
||||
while prec < 10 and j <= nr_irqs:
|
||||
prec += 1
|
||||
j *= 10
|
||||
|
||||
gdb.write("%*s" % (prec + 8, ""))
|
||||
for cpu in cpus.each_online_cpu():
|
||||
gdb.write("CPU%-8d" % cpu)
|
||||
gdb.write("\n")
|
||||
|
||||
if utils.gdb_eval_or_none("&irq_desc_tree") is None:
|
||||
return
|
||||
|
||||
for irq in range(nr_irqs):
|
||||
gdb.write(show_irq_desc(prec, irq))
|
||||
gdb.write(arch_show_interrupts(prec))
|
||||
|
||||
|
||||
LxInterruptList()
|
||||
@ -1,3 +1,4 @@
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
#
|
||||
# gdb helper commands and functions for Linux kernel debugging
|
||||
#
|
||||
@ -16,6 +17,7 @@ from linux import constants
|
||||
from linux import utils
|
||||
from linux import tasks
|
||||
from linux import lists
|
||||
from linux import vfs
|
||||
from struct import *
|
||||
|
||||
|
||||
@ -170,16 +172,16 @@ values of that process namespace"""
|
||||
gdb.write("{:^18} {:^15} {:>9} {} {} options\n".format(
|
||||
"mount", "super_block", "devname", "pathname", "fstype"))
|
||||
|
||||
for vfs in lists.list_for_each_entry(namespace['list'],
|
||||
for mnt in lists.list_for_each_entry(namespace['list'],
|
||||
mount_ptr_type, "mnt_list"):
|
||||
devname = vfs['mnt_devname'].string()
|
||||
devname = mnt['mnt_devname'].string()
|
||||
devname = devname if devname else "none"
|
||||
|
||||
pathname = ""
|
||||
parent = vfs
|
||||
parent = mnt
|
||||
while True:
|
||||
mntpoint = parent['mnt_mountpoint']
|
||||
pathname = utils.dentry_name(mntpoint) + pathname
|
||||
pathname = vfs.dentry_name(mntpoint) + pathname
|
||||
if (parent == parent['mnt_parent']):
|
||||
break
|
||||
parent = parent['mnt_parent']
|
||||
@ -187,14 +189,14 @@ values of that process namespace"""
|
||||
if (pathname == ""):
|
||||
pathname = "/"
|
||||
|
||||
superblock = vfs['mnt']['mnt_sb']
|
||||
superblock = mnt['mnt']['mnt_sb']
|
||||
fstype = superblock['s_type']['name'].string()
|
||||
s_flags = int(superblock['s_flags'])
|
||||
m_flags = int(vfs['mnt']['mnt_flags'])
|
||||
m_flags = int(mnt['mnt']['mnt_flags'])
|
||||
rd = "ro" if (s_flags & constants.LX_SB_RDONLY) else "rw"
|
||||
|
||||
gdb.write("{} {} {} {} {} {}{}{} 0 0\n".format(
|
||||
vfs.format_string(), superblock.format_string(), devname,
|
||||
mnt.format_string(), superblock.format_string(), devname,
|
||||
pathname, fstype, rd, info_opts(FS_INFO, s_flags),
|
||||
info_opts(MNT_INFO, m_flags)))
|
||||
|
||||
|
||||
90
scripts/gdb/linux/radixtree.py
Normal file
90
scripts/gdb/linux/radixtree.py
Normal file
@ -0,0 +1,90 @@
|
||||
# SPDX-License-Identifier: GPL-2.0
|
||||
#
|
||||
# Radix Tree Parser
|
||||
#
|
||||
# Copyright (c) 2016 Linaro Ltd
|
||||
# Copyright (c) 2023 Broadcom
|
||||
#
|
||||
# Authors:
|
||||
# Kieran Bingham <kieran.bingham@linaro.org>
|
||||
# Florian Fainelli <f.fainelli@gmail.com>
|
||||
|
||||
import gdb
|
||||
|
||||
from linux import utils
|
||||
from linux import constants
|
||||
|
||||
radix_tree_root_type = utils.CachedType("struct xarray")
|
||||
radix_tree_node_type = utils.CachedType("struct xa_node")
|
||||
|
||||
def is_internal_node(node):
|
||||
long_type = utils.get_long_type()
|
||||
return ((node.cast(long_type) & constants.LX_RADIX_TREE_ENTRY_MASK) == constants.LX_RADIX_TREE_INTERNAL_NODE)
|
||||
|
||||
def entry_to_node(node):
|
||||
long_type = utils.get_long_type()
|
||||
node_type = node.type
|
||||
indirect_ptr = node.cast(long_type) & ~constants.LX_RADIX_TREE_INTERNAL_NODE
|
||||
return indirect_ptr.cast(radix_tree_node_type.get_type().pointer())
|
||||
|
||||
def node_maxindex(node):
|
||||
return (constants.LX_RADIX_TREE_MAP_SIZE << node['shift']) - 1
|
||||
|
||||
def lookup(root, index):
|
||||
if root.type == radix_tree_root_type.get_type().pointer():
|
||||
node = root.dereference()
|
||||
elif root.type != radix_tree_root_type.get_type():
|
||||
raise gdb.GdbError("must be {} not {}"
|
||||
.format(radix_tree_root_type.get_type(), root.type))
|
||||
|
||||
node = root['xa_head']
|
||||
if node == 0:
|
||||
return None
|
||||
|
||||
if not (is_internal_node(node)):
|
||||
if (index > 0):
|
||||
return None
|
||||
return node
|
||||
|
||||
node = entry_to_node(node)
|
||||
maxindex = node_maxindex(node)
|
||||
|
||||
if (index > maxindex):
|
||||
return None
|
||||
|
||||
shift = node['shift'] + constants.LX_RADIX_TREE_MAP_SHIFT
|
||||
|
||||
while True:
|
||||
offset = (index >> node['shift']) & constants.LX_RADIX_TREE_MAP_MASK
|
||||
slot = node['slots'][offset]
|
||||
|
||||
if slot == 0:
|
||||
return None
|
||||
|
||||
node = slot.cast(node.type.pointer()).dereference()
|
||||
if node == 0:
|
||||
return None
|
||||
|
||||
shift -= constants.LX_RADIX_TREE_MAP_SHIFT
|
||||
if (shift <= 0):
|
||||
break
|
||||
|
||||
return node
|
||||
|
||||
class LxRadixTree(gdb.Function):
|
||||
""" Lookup and return a node from a RadixTree.
|
||||
|
||||
$lx_radix_tree_lookup(root_node [, index]): Return the node at the given index.
|
||||
If index is omitted, the root node is dereference and returned."""
|
||||
|
||||
def __init__(self):
|
||||
super(LxRadixTree, self).__init__("lx_radix_tree_lookup")
|
||||
|
||||
def invoke(self, root, index=0):
|
||||
result = lookup(root, index)
|
||||
if result is None:
|
||||
raise gdb.GdbError("No entry in tree at index {}".format(index))
|
||||
|
||||
return result
|
||||
|
||||
LxRadixTree()
|
||||
@ -43,8 +43,7 @@ def print_timer(rb_node, idx):
|
||||
|
||||
|
||||
def print_active_timers(base):
|
||||
curr = base['active']['next']['node']
|
||||
curr = curr.address.cast(rbtree.rb_node_type.get_type().pointer())
|
||||
curr = base['active']['rb_root']['rb_leftmost']
|
||||
idx = 0
|
||||
while curr:
|
||||
yield print_timer(curr, idx)
|
||||
@ -73,7 +72,7 @@ def print_cpu(hrtimer_bases, cpu, max_clock_bases):
|
||||
ts = cpus.per_cpu(tick_sched_ptr, cpu)
|
||||
|
||||
text = "cpu: {}\n".format(cpu)
|
||||
for i in xrange(max_clock_bases):
|
||||
for i in range(max_clock_bases):
|
||||
text += " clock {}:\n".format(i)
|
||||
text += print_base(cpu_base['clock_base'][i])
|
||||
|
||||
@ -158,6 +157,8 @@ def pr_cpumask(mask):
|
||||
num_bytes = (nr_cpu_ids + 7) / 8
|
||||
buf = utils.read_memoryview(inf, bits, num_bytes).tobytes()
|
||||
buf = binascii.b2a_hex(buf)
|
||||
if type(buf) is not str:
|
||||
buf=buf.decode()
|
||||
|
||||
chunks = []
|
||||
i = num_bytes
|
||||
@ -173,7 +174,7 @@ def pr_cpumask(mask):
|
||||
if 0 < extra <= 4:
|
||||
chunks[0] = chunks[0][0] # Cut off the first 0
|
||||
|
||||
return "".join(chunks)
|
||||
return "".join(str(chunks))
|
||||
|
||||
|
||||
class LxTimerList(gdb.Command):
|
||||
@ -187,7 +188,8 @@ class LxTimerList(gdb.Command):
|
||||
max_clock_bases = gdb.parse_and_eval("HRTIMER_MAX_CLOCK_BASES")
|
||||
|
||||
text = "Timer List Version: gdb scripts\n"
|
||||
text += "HRTIMER_MAX_CLOCK_BASES: {}\n".format(max_clock_bases)
|
||||
text += "HRTIMER_MAX_CLOCK_BASES: {}\n".format(
|
||||
max_clock_bases.type.fields()[max_clock_bases].enumval)
|
||||
text += "now at {} nsecs\n".format(ktime_get())
|
||||
|
||||
for cpu in cpus.each_online_cpu():
|
||||
|
||||
@ -88,7 +88,10 @@ def get_target_endianness():
|
||||
|
||||
|
||||
def read_memoryview(inf, start, length):
|
||||
return memoryview(inf.read_memory(start, length))
|
||||
m = inf.read_memory(start, length)
|
||||
if type(m) is memoryview:
|
||||
return m
|
||||
return memoryview(m)
|
||||
|
||||
|
||||
def read_u16(buffer, offset):
|
||||
@ -193,11 +196,3 @@ def gdb_eval_or_none(expresssion):
|
||||
return gdb.parse_and_eval(expresssion)
|
||||
except gdb.error:
|
||||
return None
|
||||
|
||||
|
||||
def dentry_name(d):
|
||||
parent = d['d_parent']
|
||||
if parent == d or parent == 0:
|
||||
return ""
|
||||
p = dentry_name(d['d_parent']) + "/"
|
||||
return p + d['d_iname'].string()
|
||||
|
||||
59
scripts/gdb/linux/vfs.py
Normal file
59
scripts/gdb/linux/vfs.py
Normal file
@ -0,0 +1,59 @@
|
||||
#
|
||||
# gdb helper commands and functions for Linux kernel debugging
|
||||
#
|
||||
# VFS tools
|
||||
#
|
||||
# Copyright (c) 2023 Glenn Washburn
|
||||
# Copyright (c) 2016 Linaro Ltd
|
||||
#
|
||||
# Authors:
|
||||
# Glenn Washburn <development@efficientek.com>
|
||||
# Kieran Bingham <kieran.bingham@linaro.org>
|
||||
#
|
||||
# This work is licensed under the terms of the GNU GPL version 2.
|
||||
#
|
||||
|
||||
import gdb
|
||||
from linux import utils
|
||||
|
||||
|
||||
def dentry_name(d):
|
||||
parent = d['d_parent']
|
||||
if parent == d or parent == 0:
|
||||
return ""
|
||||
p = dentry_name(d['d_parent']) + "/"
|
||||
return p + d['d_iname'].string()
|
||||
|
||||
class DentryName(gdb.Function):
|
||||
"""Return string of the full path of a dentry.
|
||||
|
||||
$lx_dentry_name(PTR): Given PTR to a dentry struct, return a string
|
||||
of the full path of the dentry."""
|
||||
|
||||
def __init__(self):
|
||||
super(DentryName, self).__init__("lx_dentry_name")
|
||||
|
||||
def invoke(self, dentry_ptr):
|
||||
return dentry_name(dentry_ptr)
|
||||
|
||||
DentryName()
|
||||
|
||||
|
||||
dentry_type = utils.CachedType("struct dentry")
|
||||
|
||||
class InodeDentry(gdb.Function):
|
||||
"""Return dentry pointer for inode.
|
||||
|
||||
$lx_i_dentry(PTR): Given PTR to an inode struct, return a pointer to
|
||||
the associated dentry struct, if there is one."""
|
||||
|
||||
def __init__(self):
|
||||
super(InodeDentry, self).__init__("lx_i_dentry")
|
||||
|
||||
def invoke(self, inode_ptr):
|
||||
d_u = inode_ptr["i_dentry"]["first"]
|
||||
if d_u == 0:
|
||||
return ""
|
||||
return utils.container_of(d_u, dentry_type.get_type().pointer(), "d_u")
|
||||
|
||||
InodeDentry()
|
||||
@ -22,6 +22,10 @@ except:
|
||||
gdb.write("NOTE: gdb 7.2 or later required for Linux helper scripts to "
|
||||
"work.\n")
|
||||
else:
|
||||
import linux.constants
|
||||
if linux.constants.LX_CONFIG_DEBUG_INFO_REDUCED:
|
||||
raise gdb.GdbError("Reduced debug information will prevent GDB "
|
||||
"from having complete types.\n")
|
||||
import linux.utils
|
||||
import linux.symbols
|
||||
import linux.modules
|
||||
@ -32,9 +36,11 @@ else:
|
||||
import linux.lists
|
||||
import linux.rbtree
|
||||
import linux.proc
|
||||
import linux.constants
|
||||
import linux.timerlist
|
||||
import linux.clk
|
||||
import linux.genpd
|
||||
import linux.device
|
||||
import linux.vfs
|
||||
import linux.mm
|
||||
import linux.radixtree
|
||||
import linux.interrupts
|
||||
|
||||
@ -291,7 +291,7 @@ fi
|
||||
if is_enabled CONFIG_KALLSYMS; then
|
||||
if ! cmp -s System.map ${kallsyms_vmlinux}.syms; then
|
||||
echo >&2 Inconsistent kallsyms data
|
||||
echo >&2 Try "make KALLSYMS_EXTRA_PASS=1" as a workaround
|
||||
echo >&2 'Try "make KALLSYMS_EXTRA_PASS=1" as a workaround'
|
||||
exit 1
|
||||
fi
|
||||
fi
|
||||
|
||||
@ -829,7 +829,7 @@ static int rt5677_parse_and_load_dsp(struct rt5677_priv *rt5677, const u8 *buf,
|
||||
if (strncmp(elf_hdr->e_ident, ELFMAG, sizeof(ELFMAG) - 1))
|
||||
dev_err(component->dev, "Wrong ELF header prefix\n");
|
||||
if (elf_hdr->e_ehsize != sizeof(Elf32_Ehdr))
|
||||
dev_err(component->dev, "Wrong Elf header size\n");
|
||||
dev_err(component->dev, "Wrong ELF header size\n");
|
||||
if (elf_hdr->e_machine != EM_XTENSA)
|
||||
dev_err(component->dev, "Wrong DSP code file\n");
|
||||
|
||||
|
||||
@ -198,17 +198,19 @@ static void print_delayacct(struct taskstats *t)
|
||||
printf("\n\nCPU %15s%15s%15s%15s%15s\n"
|
||||
" %15llu%15llu%15llu%15llu%15.3fms\n"
|
||||
"IO %15s%15s%15s\n"
|
||||
" %15llu%15llu%15llums\n"
|
||||
" %15llu%15llu%15.3fms\n"
|
||||
"SWAP %15s%15s%15s\n"
|
||||
" %15llu%15llu%15llums\n"
|
||||
" %15llu%15llu%15.3fms\n"
|
||||
"RECLAIM %12s%15s%15s\n"
|
||||
" %15llu%15llu%15llums\n"
|
||||
" %15llu%15llu%15.3fms\n"
|
||||
"THRASHING%12s%15s%15s\n"
|
||||
" %15llu%15llu%15llums\n"
|
||||
" %15llu%15llu%15.3fms\n"
|
||||
"COMPACT %12s%15s%15s\n"
|
||||
" %15llu%15llu%15llums\n"
|
||||
" %15llu%15llu%15.3fms\n"
|
||||
"WPCOPY %12s%15s%15s\n"
|
||||
" %15llu%15llu%15llums\n",
|
||||
" %15llu%15llu%15.3fms\n"
|
||||
"IRQ %15s%15s%15s\n"
|
||||
" %15llu%15llu%15.3fms\n",
|
||||
"count", "real total", "virtual total",
|
||||
"delay total", "delay average",
|
||||
(unsigned long long)t->cpu_count,
|
||||
@ -219,27 +221,31 @@ static void print_delayacct(struct taskstats *t)
|
||||
"count", "delay total", "delay average",
|
||||
(unsigned long long)t->blkio_count,
|
||||
(unsigned long long)t->blkio_delay_total,
|
||||
average_ms(t->blkio_delay_total, t->blkio_count),
|
||||
average_ms((double)t->blkio_delay_total, t->blkio_count),
|
||||
"count", "delay total", "delay average",
|
||||
(unsigned long long)t->swapin_count,
|
||||
(unsigned long long)t->swapin_delay_total,
|
||||
average_ms(t->swapin_delay_total, t->swapin_count),
|
||||
average_ms((double)t->swapin_delay_total, t->swapin_count),
|
||||
"count", "delay total", "delay average",
|
||||
(unsigned long long)t->freepages_count,
|
||||
(unsigned long long)t->freepages_delay_total,
|
||||
average_ms(t->freepages_delay_total, t->freepages_count),
|
||||
average_ms((double)t->freepages_delay_total, t->freepages_count),
|
||||
"count", "delay total", "delay average",
|
||||
(unsigned long long)t->thrashing_count,
|
||||
(unsigned long long)t->thrashing_delay_total,
|
||||
average_ms(t->thrashing_delay_total, t->thrashing_count),
|
||||
average_ms((double)t->thrashing_delay_total, t->thrashing_count),
|
||||
"count", "delay total", "delay average",
|
||||
(unsigned long long)t->compact_count,
|
||||
(unsigned long long)t->compact_delay_total,
|
||||
average_ms(t->compact_delay_total, t->compact_count),
|
||||
average_ms((double)t->compact_delay_total, t->compact_count),
|
||||
"count", "delay total", "delay average",
|
||||
(unsigned long long)t->wpcopy_count,
|
||||
(unsigned long long)t->wpcopy_delay_total,
|
||||
average_ms(t->wpcopy_delay_total, t->wpcopy_count));
|
||||
average_ms((double)t->wpcopy_delay_total, t->wpcopy_count),
|
||||
"count", "delay total", "delay average",
|
||||
(unsigned long long)t->irq_count,
|
||||
(unsigned long long)t->irq_delay_total,
|
||||
average_ms((double)t->irq_delay_total, t->irq_count));
|
||||
}
|
||||
|
||||
static void task_context_switch_counts(struct taskstats *t)
|
||||
|
||||
@ -1,7 +1,7 @@
|
||||
// SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
|
||||
|
||||
/*
|
||||
* resolve_btfids scans Elf object for .BTF_ids section and resolves
|
||||
* resolve_btfids scans ELF object for .BTF_ids section and resolves
|
||||
* its symbols with BTF ID values.
|
||||
*
|
||||
* Each symbol points to 4 bytes data and is expected to have
|
||||
|
||||
@ -1361,7 +1361,7 @@ static int bpf_object__elf_init(struct bpf_object *obj)
|
||||
goto errout;
|
||||
}
|
||||
|
||||
/* Elf is corrupted/truncated, avoid calling elf_strptr. */
|
||||
/* ELF is corrupted/truncated, avoid calling elf_strptr. */
|
||||
if (!elf_rawdata(elf_getscn(elf, obj->efile.shstrndx), NULL)) {
|
||||
pr_warn("elf: failed to get section names strings from %s: %s\n",
|
||||
obj->path, elf_errmsg(-1));
|
||||
|
||||
@ -771,7 +771,7 @@ static int collect_usdt_targets(struct usdt_manager *man, Elf *elf, const char *
|
||||
target->rel_ip = usdt_rel_ip;
|
||||
target->sema_off = usdt_sema_off;
|
||||
|
||||
/* notes.args references strings from Elf itself, so they can
|
||||
/* notes.args references strings from ELF itself, so they can
|
||||
* be referenced safely until elf_end() call
|
||||
*/
|
||||
target->spec_str = note.args;
|
||||
|
||||
@ -213,7 +213,7 @@ Elf_Scn *elf_section_by_name(Elf *elf, GElf_Ehdr *ep,
|
||||
Elf_Scn *sec = NULL;
|
||||
size_t cnt = 1;
|
||||
|
||||
/* Elf is corrupted/truncated, avoid calling elf_strptr. */
|
||||
/* ELF is corrupted/truncated, avoid calling elf_strptr. */
|
||||
if (!elf_rawdata(elf_getscn(elf, ep->e_shstrndx), NULL))
|
||||
return NULL;
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user