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Filename Latest commit message Latest commit date
Yipeng Zou 834f4d856f tracing: hold caller_addr to hardirq_{enable,disable}_ip 
[ Upstream commit 54c3931957f6a6194d5972eccc36d052964b2abe ]

Currently, The arguments passing to lockdep_hardirqs_{on,off} was fixed
in CALLER_ADDR0.
The function trace_hardirqs_on_caller should have been intended to use
caller_addr to represent the address that caller wants to be traced.

For example, lockdep log in riscv showing the last {enabled,disabled} at
__trace_hardirqs_{on,off} all the time(if called by):
[   57.853175] hardirqs last  enabled at (2519): __trace_hardirqs_on+0xc/0x14
[   57.853848] hardirqs last disabled at (2520): __trace_hardirqs_off+0xc/0x14

After use trace_hardirqs_xx_caller, we can get more effective information:
[   53.781428] hardirqs last  enabled at (2595): restore_all+0xe/0x66
[   53.782185] hardirqs last disabled at (2596): ret_from_exception+0xa/0x10

Link: https://lkml.kernel.org/r/20220901104515.135162-2-zouyipeng@huawei.com

Cc: stable@vger.kernel.org
Fixes: c3bc8fd637 ("tracing: Centralize preemptirq tracepoints and unify their usage")
Signed-off-by: Yipeng Zou <zouyipeng@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-09-28 11:03:57 +02:00
arch task_stack, x86/cea: Force-inline stack helpers 2022-09-28 11:03:57 +02:00
block
certs
crypto
Documentation Input: iforce - add support for Boeder Force Feedback Wheel 2022-09-20 12:27:59 +02:00
drivers parisc: ccio-dma: Add missing iounmap in error path in ccio_probe() 2022-09-28 11:03:57 +02:00
fs NFSv4: Turn off open-by-filehandle and NFS re-export for NFSv4.0 2022-09-28 11:03:56 +02:00
include task_stack, x86/cea: Force-inline stack helpers 2022-09-28 11:03:57 +02:00
init
ipc
kernel tracing: hold caller_addr to hardirq_{enable,disable}_ip 2022-09-28 11:03:57 +02:00
lib lib/vdso: Mark do_hres() and do_coarse() as __always_inline 2022-09-05 10:27:47 +02:00
LICENSES
mm mm: Fix TLB flush for not-first PFNMAP mappings in unmap_region() 2022-09-20 12:28:00 +02:00
net sch_sfb: Also store skb len before calling child enqueue 2022-09-15 12:04:56 +02:00
samples
scripts kbuild: Fix include path in scripts/Makefile.modpost 2022-09-05 10:27:45 +02:00
security apparmor: Fix memleak in aa_simple_write_to_buffer() 2022-08-25 11:18:21 +02:00
sound ALSA: pcm: oss: Fix race at SNDCTL_DSP_SYNC 2022-09-28 11:03:57 +02:00
tools Revert "selftests/bpf: Fix test_align verifier log patterns" 2022-09-05 10:27:39 +02:00
usr
virt KVM: Add infrastructure and macro to mark VM as bugged 2022-08-25 11:18:16 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
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.gitignore
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Makefile Linux 5.4.214 2022-09-20 12:28:00 +02:00
README

README 

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

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

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

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

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

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