ong Sun
Fixes: 615ab43b838b ("tests/pid_namespace: add pid_max tests")
Signed-off-by: Tiezhu Yang
---
tools/testing/selftests/pid_namespace/pid_max.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/pid_namespace/pid_max.c
b/tools/testing/selftests/pid_names
).
Fixes: 615ab43b838b ("tests/pid_namespace: add pid_max tests")
Signed-off-by: Tiezhu Yang
---
tools/testing/selftests/pid_namespace/pid_max.c | 10 +-
1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/pid_namespace/pid_max.c
b/tool
Tiezhu Yang (2):
selftests: pid_namespace: Include sys/mount.h
selftests: pid_namespace: Skip tests if not root
tools/testing/selftests/pid_namespace/pid_max.c | 11 ++-
1 file changed, 10 insertions(+), 1 deletion(-)
--
2.42.0
kernel/kprobes.c and arch/loongarch/kernel/uprobes.c
Tested-by: Tiezhu Yang
Thanks,
Tiezhu
On Thu, 27 Jun 2024 19:38:06 +0200
Oleg Nesterov wrote:
...
> > > +arch_initcall(check_emit_break);
> > > +
> >
> > I wouldn't even bother with this, but whatever.
>
> Agreed, this looks a bit ugly. I did this only because I can not test
> this (hopefully trivial) patch and the maintainers didn
(1) tools/bpf/bpftool build failed due to the following reason:
Error: failed to load BTF from /boot/vmlinux-5.12.0-rc2: No such file or
directory
make: *** [Makefile:158: vmlinux.h] Error 2
(2) When set CONFIG_DEBUG_INFO_BTF=y, failed to generate BTF for vmlinux
due to pahole is not available
g/doc/html/latest/bpf/bpf_devel_QA.html
Fixes: 542228384888 ("bpf, doc: convert bpf_devel_QA.rst to use RST formatting")
Signed-off-by: Tiezhu Yang
---
v2: Add Fixes: tag
Documentation/bpf/bpf_devel_QA.rst | 23 ++-
1 file changed, 10 insertions(+), 13 deletions(-)
d
he links of
"samples/bpf/" and "selftests" because there are not related
documentations.
[1] https://www.kernel.org/doc/html/MAINTAINERS
[2] https://www.kernel.org/doc/html/samples/bpf/
[3] https://www.kernel.org/doc/html/tools/testing/selftests/bpf/
[4] https://
_module() failure disappered and we can login
normally through a graphical interface.
[1] https://lore.kernel.org/patchwork/patch/1411214/
Signed-off-by: Tiezhu Yang
---
v2: Update the commit message to avoid using diff content - patch(1) might not
work
kernel/module.c | 2 +-
1 file changed, 1 ins
and we can login
normally through a graphical interface.
[1] https://lore.kernel.org/patchwork/patch/1411214/
Signed-off-by: Tiezhu Yang
---
kernel/module.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/module.c b/kernel/module.c
index 3047935..30d320b 100644
--- a/ker
On 04/12/2021 11:02 AM, Tiezhu Yang wrote:
On 04/11/2021 07:04 PM, Jinyang He wrote:
Commit 04324f44cb69 ("MIPS: Remove get_fs/set_fs") brought a problem for
strnlen_user(). Jump out when checking access_ok() with condition that
(s + strlen(s)) < __UA_LIMIT <=
On 04/11/2021 07:04 PM, Jinyang He wrote:
Commit 04324f44cb69 ("MIPS: Remove get_fs/set_fs") brought a problem for
strnlen_user(). Jump out when checking access_ok() with condition that
(s + strlen(s)) < __UA_LIMIT <= (s + n). The old __strnlen_user_asm()
just checked (ua_limit & s) without check
st make it work well,
it is not a proper and final solution, I hope someone will have a better
solution to fix this issue in the future.
[1] https://lore.kernel.org/patchwork/patch/1285542/
Signed-off-by: Tiezhu Yang
---
Hi Thomas,
If you are OK with this change, could you please apply it
to
filename
3792429 0 4221
linux-5.12-rc5/net/ipv4/netfilter/nf_reject_ipv4.o
Signed-off-by: Tiezhu Yang
---
arch/mips/include/asm/checksum.h | 4
1 file changed, 4 insertions(+)
diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/include/asm/checksum.h
index 1e6c1
again").
Fixes: 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where
they work")
Signed-off-by: Tiezhu Yang
---
v3: Select ARCH_HAS_NON_OVERLAPPING_ADDRESS_SPACE if !EVA
on MIPS.
v2: update the commit message to fix typos found by
Sergei Shtylyov, tha
On 03/25/2021 06:17 PM, Thomas Bogendoerfer wrote:
On Mon, Mar 22, 2021 at 03:12:59PM +0800, Tiezhu Yang wrote:
On 03/22/2021 12:46 PM, Maciej W. Rozycki wrote:
On Thu, 18 Mar 2021, Tiezhu Yang wrote:
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 160b3a8..4b94ec7 100644
--- a/arch
On 03/22/2021 12:46 PM, Maciej W. Rozycki wrote:
On Thu, 18 Mar 2021, Tiezhu Yang wrote:
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 160b3a8..4b94ec7 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -6,6 +6,7 @@ config MIPS
select ARCH_BINFMT_ELF_STATE if
probe_read() will not be available.
This is similar with the commit d195b1d1d119 ("powerpc/bpf: Enable
bpf_probe_read{, str}() on powerpc again").
Fixes: 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where
they work")
Signed-off-by: Tiezhu Yang
---
v2: up
probe_read() will not be available.
This is similar with the commit d195b1d1d1196 ("powerpc/bpf: Enable
bpf_probe_read{, str}() on powerpc again").
Fixes: 0ebeea8ca8a4 ("bpf: Restrict bpf_probe_read{, str}() only to archs where
they work")
Signed-off-by: Tiezhu Yang
---
a
On 03/15/2021 08:42 PM, David Laight wrote:
From: Tiezhu Yang
Sent: 15 March 2021 12:26
On 03/15/2021 04:49 AM, Maciej W. Rozycki wrote:
On Tue, 9 Mar 2021, Tiezhu Yang wrote:
diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/include/asm/checksum.h
index 1e6c135..80eddd4 100644
On 03/15/2021 04:49 AM, Maciej W. Rozycki wrote:
On Tue, 9 Mar 2021, Tiezhu Yang wrote:
diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/include/asm/checksum.h
index 1e6c135..80eddd4 100644
--- a/arch/mips/include/asm/checksum.h
+++ b/arch/mips/include/asm/checksum.h
@@ -128,9 +128,13
On 03/15/2021 06:24 PM, Alexander Lobakin wrote:
From: Tiezhu Yang
Date: Tue, 9 Mar 2021 12:18:13 +0800
The asm code in csum_tcpudp_nofold() is performance-critical, I am sorry
for the poorly considered implementation about the performance influence
with GCC in the commit 198688edbf77 ("
Add entry "L: linux-perf-us...@vger.kernel.org" to archive the
related mail on https://lore.kernel.org/linux-perf-users/, add
entry "W: https://perf.wiki.kernel.org/"; so that newbies could
get some useful materials.
Signed-off-by: Tiezhu Yang
---
MAINTAINERS | 2 +
can build successfully by both GCC and Clang,
at the same time, we can avoid the potential performance influence
with GCC.
Signed-off-by: Tiezhu Yang
---
arch/mips/include/asm/checksum.h | 12
1 file changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/mips/include/asm/checksu
On 03/09/2021 12:52 AM, David Laight wrote:
From: Tiezhu Yang
Sent: 08 March 2021 12:50
The asm code in csum_tcpudp_nofold() is performance-critical, I am sorry
for the poorly considered implementation about the performance influence
with GCC in the commit 198688edbf77 ("MIPS: Fix inlin
can build successfully by both GCC and Clang,
at the same time, we can avoid the potential performance influence
with GCC.
Signed-off-by: Tiezhu Yang
---
arch/mips/include/asm/checksum.h | 10 ++
1 file changed, 10 insertions(+)
diff --git a/arch/mips/include/asm/checksum.h b/arch/mips/i
configs in loongson3_defconfig to make sure
the above configs are set after make loongson3_defconfig.
[1] https://github.com/iovisor/bpftrace/blob/master/INSTALL.md
Signed-off-by: Tiezhu Yang
---
arch/mips/configs/loongson3_defconfig | 7 ++-
1 file changed, 6 insertions(+), 1 deletion
copy_{to,from}_user() returns the amount left to copy, it should return
-EFAULT error code if copy {to,from} user failed, just like the return
value is an error code when {put,get}_user() failed, this is to make the
return value consistent, no function change.
Signed-off-by: Tiezhu Yang
GCC works, as Nathan said, the config
should not even be selectable when building with Clang, so
just make MIPS32_O32 depends on !CC_IS_CLANG.
[1] https://www.kernel.org/doc/html/latest/kbuild/llvm.html
[2] https://bugs.llvm.org/show_bug.cgi?id=38063
Signed-off-by: Tiezhu Yang
Acked-by: Nathan C
[1]
https://lore.kernel.org/linux-mips/CAG_fn=W0JHf8QyUX==+rqmp8poulhrsqca9htffws31ga8k...@mail.gmail.com/
Signed-off-by: Tiezhu Yang
---
arch/mips/include/asm/checksum.h | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
applied to mips-next.
This is in a performance-critical path
GCC works well, as Nathan said, the config
should not even be selectable when build kernel with Clang, so
just make MIPS32_O32 depends on !CC_IS_CLANG.
[1] https://www.kernel.org/doc/html/latest/kbuild/llvm.html
[2] https://bugs.llvm.org/show_bug.cgi?id=38063
Signed-off-by: Tiezhu Yang
---
ar
On 03/04/2021 10:02 AM, Nathan Chancellor wrote:
On Thu, Mar 04, 2021 at 09:15:44AM +0800, Tiezhu Yang wrote:
When build kernel with Clang [1]:
$ make CC=clang loongson3_defconfig
$ make CC=clang
[snip]
I think this might be a better solution. I know that I personally never
read defconfig
ment to point out this bug and suggest the
users to remove CONFIG_MIPS32_O32=y in defconfig when build
kernel with Clang.
[1] https://www.kernel.org/doc/html/latest/kbuild/llvm.html
[2] https://bugs.llvm.org/show_bug.cgi?id=38063
Signed-off-by: Tiezhu Yang
---
arch/mips/configs/loongson3_defcon
On 03/02/2021 06:01 PM, Ben Dooks wrote:
On 02/03/2021 07:28, Tiezhu Yang wrote:
copy_to_user() returns the amount left to copy, it should return -EFAULT
if copy to user failed.
This looks technically correct, but the caller (only one)
will check for non-zero and will covert that to -EFAULT
copy_to_user() returns the amount left to copy, it should return -EFAULT
if copy to user failed.
Signed-off-by: Tiezhu Yang
---
arch/riscv/kernel/signal.c | 6 +-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/riscv/kernel/signal.c b/arch/riscv/kernel/signal.c
index
, Feb 22, 2021 at 02:43:39PM +0800, Tiezhu Yang escreveu:
On 02/04/2021 11:35 AM, Tiezhu Yang wrote:
v2: add R26 and R27 to the enum perf_event_mips_regs in patch #1
Tiezhu Yang (3):
MIPS: kernel: Support extracting off-line stack traces from user-space
with perf
perf tools: Support
On 02/04/2021 11:35 AM, Tiezhu Yang wrote:
v2: add R26 and R27 to the enum perf_event_mips_regs in patch #1
Tiezhu Yang (3):
MIPS: kernel: Support extracting off-line stack traces from user-space
with perf
perf tools: Support mips unwinding and dwarf-regs
perf tools: Generate mips
From: Tiezhu Yang
In the current code, arch_has_single_step() is not defined on MIPS,
that means MIPS does not support instruction single-step for user mode.
Delve is a debugger for the Go programming language, the ptrace syscall
PtraceSingleStep() failed [1] on MIPS and then the single step
On 02/09/2021 08:11 PM, Thomas Bogendoerfer wrote:
On Tue, Feb 09, 2021 at 01:05:25PM +0800, Tiezhu Yang wrote:
According to MIPS EJTAG Specification [1], a Debug Breakpoint
exception occurs when an SDBBP instruction is executed, the
CP0_DEBUG bit DBp indicates that a Debug Breakpoint exception
Signed-off-by: Tiezhu Yang
---
v2: add MIPS_DEBUG_DBP definition
arch/mips/include/asm/mipsregs.h | 4
arch/mips/kernel/genex.S | 4 ++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/mips/include/asm/mipsregs.h b/arch/mips/include/asm/mipsregs.h
index a0e8ae5
On 02/09/2021 10:36 AM, Jiaxun Yang wrote:
On Tue, Feb 9, 2021, at 12:32 AM, Jiaxun Yang wrote:
On Mon, Feb 8, 2021, at 9:14 PM, Tiezhu Yang wrote:
According to MIPS EJTAG Specification [1], a Debug Breakpoint
exception occurs when an SDBBP instruction is executed, the
CP0_DEBUG bit DBp
Signed-off-by: Tiezhu Yang
---
arch/mips/kernel/genex.S | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/mips/kernel/genex.S b/arch/mips/kernel/genex.S
index bcce32a..6336826 100644
--- a/arch/mips/kernel/genex.S
+++ b/arch/mips/kernel/genex.S
@@ -349,8 +349,8 @@ NESTED
/master/pkg/proc/native/threads_linux.go#L50
[2]
https://github.com/go-delve/delve/blob/master/vendor/golang.org/x/sys/unix/syscall_linux.go#L1573
[3] http://www.t-es-t.hu/download/mips/md00047f.pdf
Reported-by: Guoqi Chen
Signed-off-by: Xingxing Su
Signed-off-by: Tiezhu Yang
---
arch/mips/include
When call ptrace(PTRACE_CONT, ...) failed, use correct error messages.
Signed-off-by: Tiezhu Yang
---
tools/testing/selftests/breakpoints/breakpoint_test_arm64.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/breakpoints/breakpoint_test_arm64.c
oader completely"), so the old version can not
work in the latest mainline kernel.
Since it is very simple and useful for newbies, I think it is
necessary to be upstreamed.
[1]
https://github.com/bpftools/linux-observability-with-bpf/tree/master/code/chapter-2/hello_world
Signed-off-by: T
riginal patches into two parts (MIPS kernel and perf
tools) to merge easily.]
The original patches:
https://lore.kernel.org/patchwork/patch/1126521/
https://lore.kernel.org/patchwork/patch/1126520/
Signed-off-by: David Daney
Signed-off-by: Ralf Baechle
Signed-off-by: Archer Yan
Signed-off-by:
Baechle
Signed-off-by: Archer Yan
Signed-off-by: Tiezhu Yang
---
v2: no changes
tools/perf/Makefile.config | 6 ++
tools/perf/arch/mips/Makefile | 4 ++
tools/perf/arch/mips/include/dwarf-regs-table.h | 31 +
tools/perf/arch/mips/include
Grab a copy of arch/mips/kernel/syscalls/syscall_n64.tbl and use it to
generate tools/perf/arch/mips/include/generated/asm/syscalls_n64.c file,
this is similar with commit 1b700c997500 ("perf tools: Build syscall table
.c header from kernel's syscall_64.tbl")
Signed-off-by: Tiezh
v2: add R26 and R27 to the enum perf_event_mips_regs in patch #1
Tiezhu Yang (3):
MIPS: kernel: Support extracting off-line stack traces from user-space
with perf
perf tools: Support mips unwinding and dwarf-regs
perf tools: Generate mips syscalls_n64.c syscall table
arch/mips/Kconfig
On 02/04/2021 02:30 AM, Shuah Khan wrote:
On 2/3/21 1:39 AM, Tiezhu Yang wrote:
According to the error message, the first argument of ptrace() should be
PTRACE_SINGLESTEP instead of PTRACE_CONT when ptrace single step.
Fixes: f43365ee17f8 ("selftests: arm64: add test for
unaligned/in
On 2/3/21 6:40 PM, Thomas Bogendoerfer wrote:
On Mon, Feb 01, 2021 at 08:56:06PM +0800, Tiezhu Yang wrote:
On 02/01/2021 06:43 PM, Thomas Bogendoerfer wrote:
On Tue, Dec 29, 2020 at 08:55:59PM +0800, Tiezhu Yang wrote:
+++ b/arch/mips/include/uapi/asm/perf_regs.h
@@ -0,0 +1,42 @@
+/* SPDX
According to the error message, the first argument of ptrace() should be
PTRACE_SINGLESTEP instead of PTRACE_CONT when ptrace single step.
Fixes: f43365ee17f8 ("selftests: arm64: add test for unaligned/inexact
watchpoint handling")
Signed-off-by: Tiezhu Yang
---
tools/testing
Use test_tsk_thread_flag() directly instead of test_ti_thread_flag() to
improve readability when the argument type is struct task_struct, it is
similar with commit 5afc78551bf5 ("arm64: Use test_tsk_thread_flag() for
checking TIF_SINGLESTEP").
Signed-off-by: Tiezhu Yang
---
arch/sp
Use test_tsk_thread_flag() directly instead of test_ti_thread_flag() to
improve readability when the argument type is struct task_struct, it is
similar with commit 5afc78551bf5 ("arm64: Use test_tsk_thread_flag() for
checking TIF_SINGLESTEP").
Signed-off-by: Tiezhu Yang
---
arch/pari
On 02/01/2021 06:43 PM, Thomas Bogendoerfer wrote:
On Tue, Dec 29, 2020 at 08:55:59PM +0800, Tiezhu Yang wrote:
+++ b/arch/mips/include/uapi/asm/perf_regs.h
@@ -0,0 +1,42 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+#ifndef _ASM_MIPS_PERF_REGS_H
+#define
On 01/28/2021 05:15 AM, Thomas Bogendoerfer wrote:
On Tue, Jan 05, 2021 at 11:18:06AM +0100, Peter Zijlstra wrote:
On Tue, Jan 05, 2021 at 11:45:37AM +0800, Jiaxun Yang wrote:
在 2021/1/4 下午6:59, Peter Zijlstra 写道:
On Tue, Dec 29, 2020 at 08:55:59PM +0800, Tiezhu Yang wrote:
+u64 perf_reg_abi
rect}\n'
0.000
So update https://bpf.io/ to https://ebpf.io/ to avoid redirects.
Signed-off-by: Tiezhu Yang
---
MAINTAINERS | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index 1df56a3..09314ce 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -
ot;0" ((__force unsigned long)daddr),
^~~~
1 error generated.
This is a known issue on MIPS [1], the changed code can be compiled
successfully by both GCC and Clang.
[1]
https://lore.kernel.org/linux-mips/CAG_fn=W0JHf8QyUX==+rqmp8poulhrsqca9htffws31ga8k...@mail.gmail.com
On 01/27/2021 12:01 AM, Daniel Borkmann wrote:
On 1/26/21 3:05 PM, Tiezhu Yang wrote:
There exists many build errors when make M=samples/bpf on the Loongson
platform, this issue is MIPS related, x86 compiles just fine.
Here are some errors:
[...]
So we can do the similar things in samples
just add
platform specific and generic include dir for MIPS Loongson64 to
fix the build errors.
Signed-off-by: Tiezhu Yang
---
samples/bpf/Makefile | 4
1 file changed, 4 insertions(+)
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 362f314..45ceca4 100644
--- a/samples/
With #ifndef __SANE_USERSPACE_TYPES__ in tools/include/linux/types.h,
the above error has gone and this ifndef change does not hurt other
compilations.
Signed-off-by: Tiezhu Yang
---
v2: Update the commit message
samples/bpf/Makefile| 4
tools/include/linux/types.h | 3 +++
2 fil
://www.mips.com/?do-download=the-mips64-instruction-set-v6-06
Reported-by: Ming Wang
Signed-off-by: Tiezhu Yang
---
arch/mips/include/asm/inst.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/mips/include/asm/inst.h b/arch/mips/include/asm/inst.h
index 22912f7..2f98ced 100644
html
[3] https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages
Signed-off-by: Tiezhu Yang
Acked-by: Yonghong Song
Reviewed-by: Nathan Chancellor
---
v2: Update the commit message suggested by Yonghong,
thank you very much.
v3: Remove the default option BUILD_SHARED_LIBS=O
[2] https://www.llvm.org/docs/CMake.html
Signed-off-by: Tiezhu Yang
Acked-by: Yonghong Song
---
v2: Update the commit message suggested by Yonghong,
thank you very much.
v3: Remove the default option BUILD_SHARED_LIBS=OFF
and just mkdir llvm-project/llvm/build suggested
by Fangrui.
On 01/20/2021 10:43 AM, Nick Desaulniers wrote:
On Mon, Jan 18, 2021 at 11:56 PM Tiezhu Yang wrote:
The current llvm/clang build procedure in samples/bpf/README.rst is
out of date. See below that the links are not accessible any more.
$ git clone http://llvm.org/git/llvm.git
Cloning into
On 01/20/2021 05:58 AM, Fangrui Song wrote:
On 2021-01-19, Tiezhu Yang wrote:
The current llvm/clang build procedure in samples/bpf/README.rst is
out of date. See below that the links are not accessible any more.
$ git clone http://llvm.org/git/llvm.git
Cloning into 'llvm'...
fatal:
same time, update the
related comment in Makefile.
[1] https://clang.llvm.org/get_started.html
Signed-off-by: Tiezhu Yang
Acked-by: Yonghong Song
---
v2: Update the commit message suggested by Yonghong,
thank you very much.
samples/bpf/Makefile | 2 +-
samples/bpf/README.rst | 1
llvm.org/get_started.html
Signed-off-by: Tiezhu Yang
---
samples/bpf/Makefile | 2 +-
samples/bpf/README.rst | 17 ++---
2 files changed, 11 insertions(+), 8 deletions(-)
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile
index 26fc96c..d061446 100644
--- a/samples/bpf/Makef
On 01/14/2021 01:14 AM, Yonghong Song wrote:
I do not think this fix is correct. x86 does not define its own
rwonce.h and still compiles fine.
As noted in the above, we have include/asm-generic/rwonce.h.
Once you do a proper build, you will have rwonce.h in arch
generated directory like
-bash-4
o be feasible, so we should
update it to reflect the reality.
[1] https://clang.llvm.org/get_started.html
Signed-off-by: Tiezhu Yang
---
samples/bpf/README.rst | 8 +++-
1 file changed, 3 insertions(+), 5 deletions(-)
diff --git a/samples/bpf/README.rst b/samples/bpf/README.rst
index d
On 01/14/2021 01:12 AM, Yonghong Song wrote:
On 1/13/21 2:57 AM, Tiezhu Yang wrote:
MIPS needs __SANE_USERSPACE_TYPES__ before to select
'int-ll64.h' in arch/mips/include/uapi/asm/types.h and avoid compile
warnings when printing __u64 with %llu, %llx or %lld.
could you men
%lu
printf("%s/%llx;", sym->name, addr);
~~~^
%lx
printf(";%s %lld\n", key->waker, count);
~~~^ ~
%ld
Signed-off-by: Tiezhu Yang
---
samples/bpf/Makefile|
x/kernel.h:10:
./include/linux/compiler.h:246:10: fatal error: 'asm/rwonce.h' file not found
^~
1 error generated.
$ find . -name rwonce.h
./include/asm-generic/rwonce.h
./arch/arm64/include/asm/rwonce.h
./arch/alpha/include/asm/rwonce.h
Signed-off-by: Tiezhu Yang
There exists many build errors and warnings when make M=samples/bpf,
this patch series fix some of them, I will submit some other patches
related with MIPS later.
Tiezhu Yang (2):
samples/bpf: Set flag __SANE_USERSPACE_TYPES__ for MIPS to fix build
warnings
compiler.h: Include asm
On 12/30/2020 12:39 AM, Thomas Bogendoerfer wrote:
On Wed, Dec 16, 2020 at 10:44:23AM +0800, Tiezhu Yang wrote:
I have tested the following three configs on the Loongson platform:
(1) !NUMA and !SMP,
(2) !NUMA and SMP,
(3) NUMA and SMP,
everything is all right.
But there exists the following
Grab a copy of arch/mips/kernel/syscalls/syscall_n64.tbl and use it to
generate tools/perf/arch/mips/include/generated/asm/syscalls_n64.c file,
this is similar with commit 1b700c997500 ("perf tools: Build syscall table
.c header from kernel's syscall_64.tbl")
Signed-off-
riginal patches into two parts (MIPS kernel and perf
tools) to merge easily.]
The original patches:
https://lore.kernel.org/patchwork/patch/1126521/
https://lore.kernel.org/patchwork/patch/1126520/
Signed-off-by: David Daney
Signed-off-by: Ralf Baechle
Signed-off-by: Archer Yan
Signed-off-b
Baechle
Signed-off-by: Archer Yan
Signed-off-by: Tiezhu Yang
---
tools/perf/Makefile.config | 6 ++
tools/perf/arch/mips/Makefile | 4 ++
tools/perf/arch/mips/include/dwarf-regs-table.h | 31 +
tools/perf/arch/mips/include/perf_regs.h| 84
Tiezhu Yang (3):
MIPS: kernel: Support extracting off-line stack traces from user-space
with perf
perf tools: Support mips unwinding and dwarf-regs
perf tools: Generate mips syscalls_n64.c syscall table
arch/mips/Kconfig | 2 +
arch/mips/include/uapi
Module.symvers still exists when make clean, remove it.
Signed-off-by: Tiezhu Yang
---
Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
index e30cf02..8235bb7 100644
--- a/Makefile
+++ b/Makefile
@@ -1468,7 +1468,7 @@ endif # CONFIG_MODULES
On 12/17/2020 08:48 PM, Tiezhu Yang wrote:
On 12/16/2020 11:16 PM, Arnaldo Carvalho de Melo wrote:
Em Wed, Dec 16, 2020 at 11:30:47AM -0300, Arnaldo Carvalho de Melo
escreveu:
Em Wed, Dec 16, 2020 at 07:14:02PM +0800, Jiaxun Yang escreveu:
在 2020/12/16 下午6:05, Tiezhu Yang 写道:
Hi,
In the
It is better to check syscall.tbl for powerpc in check-headers.sh, it is
similar with commit c9b51a017065 ("perf tools: Move syscall_64.tbl check
into check-headers.sh").
Signed-off-by: Tiezhu Yang
---
tools/perf/arch/powerpc/Makefile | 7 ---
tools/perf/check-headers.sh | 1
It is better to check syscall.tbl for s390 in check-headers.sh, it is
similar with commit c9b51a017065 ("perf tools: Move syscall_64.tbl check
into check-headers.sh").
Signed-off-by: Tiezhu Yang
---
tools/perf/arch/s390/Makefile | 4
tools/perf/check-headers.sh | 1 +
2 files
perf/arch/s390/entry/syscalls/syscall.tbl
Signed-off-by: Tiezhu Yang
---
tools/perf/arch/s390/entry/syscalls/syscall.tbl | 395 ++--
1 file changed, 225 insertions(+), 170 deletions(-)
diff --git a/tools/perf/arch/s390/entry/syscalls/syscall.tbl
b/tools/perf/arch/s390/entry/
Tiezhu Yang (4):
perf tools: Move syscall.tbl check into check-headers.sh for powerpc
perf tools: Move syscall.tbl check into check-headers.sh for s390
perf tools: Update powerpc's syscall.tbl
perf tools: Update s390's syscall.tbl
tools/perf/arch/powerpc/Makefile
tbl
tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
Signed-off-by: Tiezhu Yang
---
tools/perf/arch/powerpc/entry/syscalls/syscall.tbl | 25 --
1 file changed, 18 insertions(+), 7 deletions(-)
diff --git a/tools/perf/arch/powerpc/entry/syscalls/syscall.tbl
b/tools/per
On 12/16/2020 11:16 PM, Arnaldo Carvalho de Melo wrote:
Em Wed, Dec 16, 2020 at 11:30:47AM -0300, Arnaldo Carvalho de Melo escreveu:
Em Wed, Dec 16, 2020 at 07:14:02PM +0800, Jiaxun Yang escreveu:
在 2020/12/16 下午6:05, Tiezhu Yang 写道:
Hi,
In the current upstream mainline kernel, perf record
Hi,
In the current upstream mainline kernel, perf record --call-graph dwarf
is not supported for architecture mips64. I find the following related
patches about this feature by David Daney and
Archer Yan in Sep 2019.
[1/2] Support mips unwinding and dwarf-regs
https://lore.kernel.org/patchwork
On 12/15/2020 09:21 PM, Thomas Bogendoerfer wrote:
On Thu, Dec 03, 2020 at 08:32:52PM +0800, Tiezhu Yang wrote:
In the current code, we can not build under !CONFIG_NUMA and !CONFIG_SMP
on the Loongson64 platform, it seems bad for the users who just want to
use pure single core (not nosmp) to
rectory
[root@linux loongson]# echo 0 > /sys/devices/system/cpu/cpu0/online
bash: /sys/devices/system/cpu/cpu0/online: Permission denied
So no need to check CPU 0 in cps_cpu_disable(), just remove it.
Reported-by: liwei (GF)
Signed-off-by: Tiezhu Yang
---
cps_cpu_disable() is not done in the ear
On 12/15/2020 11:26 AM, liwei (GF) wrote:
Hi,
On 2020/11/25 18:11, Tiezhu Yang wrote:
After commit 9cce844abf07 ("MIPS: CPU#0 is not hotpluggable"),
Why CPU#0 is not hotpluggable on MIPS? Does that unrealizable?
The early discussion is here:
https://patchwork.kernel.org/project/
, max
size of stack recording ()
default: 8192 (bytes)
Default: fp
Signed-off-by: Tiezhu Yang
---
v2: Use HAVE_DWARF_SUPPORT to check
tools/perf/util/callchain.c | 11 +++
1 file changed, 11 insertions(+)
dif
On 12/14/2020 09:39 PM, Arnaldo Carvalho de Melo wrote:
Em Mon, Dec 14, 2020 at 08:56:55PM +0800, Tiezhu Yang escreveu:
DWARF register mappings have not been defined for some architectures,
at least for mips, so we can print an error message and then return
directly when use '--call-graph
, max
size of stack recording ()
default: 8192 (bytes)
Default: fp
Signed-off-by: Tiezhu Yang
---
tools/perf/util/callchain.c | 11 +++
1 file changed, 11 insertions(+)
diff --git a/tools/perf/util/callchain
with this patch,
we can see the following two sysfs interfaces under DEBUG_FS.
/sys/kernel/debug/memblock/memory
/sys/kernel/debug/memblock/reserved
Signed-off-by: Tiezhu Yang
---
v2:
- select ARCH_KEEP_MEMBLOCK only if DEBUG_KERNEL
arch/mips/Kconfig | 1 +
1 file changed, 1 insertion(+)
di
On 12/04/2020 08:08 PM, Thomas Bogendoerfer wrote:
On Thu, Dec 03, 2020 at 11:58:51AM +0800, Jiaxun Yang wrote:
在 2020/12/3 上午11:19, Tiezhu Yang 写道:
In the current code, CONFIG_ARCH_KEEP_MEMBLOCK is not set for MIPS arch,
memblock_discard() will discard memory and reserved arrays if they were
declaration of prom_init_memory() and add the
declaration of szmem() in loongson.h to avoid build error.
Signed-off-by: Youling Tang
Signed-off-by: Jinyang He
Signed-off-by: Tiezhu Yang
---
arch/mips/Kconfig| 3 +-
arch/mips/configs/loongson3_defconfig| 2
Tiezhu Yang (2):
MIPS: Move memblock_dump_all() to the end of setup_arch()
MIPS: Select ARCH_KEEP_MEMBLOCK to enable sysfs memblock debug
arch/mips/Kconfig| 1 +
arch/mips/kernel/setup.c | 4 ++--
2 files changed, 3 insertions(+), 2 deletions(-)
--
2.1.0
In order to get more memblock configuration with memblock=debug in the boot
cmdline, move memblock_dump_all() to the end of setup_arch(), this can help
us to get dmi_setup() and resource_init() memblock info, at least for now.
Signed-off-by: Tiezhu Yang
---
arch/mips/kernel/setup.c | 4 ++--
1
atch, we can see
the following two sysfs interfaces under DEBUG_FS.
/sys/kernel/debug/memblock/memory
/sys/kernel/debug/memblock/reserved
Signed-off-by: Tiezhu Yang
---
arch/mips/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 44a47ad..f65da197 10
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