(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
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
t remove the 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
just 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 Shtyly
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
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 ++
1 file change
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
athan 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 Chancellor
---
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 (otherwise it wouldn't
athan 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
---
arch/mips/Kconfig | 2
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
t 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_defconfig | 3 +++
1 file
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
tches 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: Tiezhu Ya
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: Tiezhu Yan
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
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
@@ -3260,7 +3260,7 @@ R:KP
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/
Signed-off-by: Tiezhu Yang
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
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/bpf/Makefile
+++ b/samples/bpf
h #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 files changed
://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
/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=OFF
and just mkdir llvm-project/llvm/build
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.
Documentation/bpf/bpf_devel_QA.rst | 3
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
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: unable
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 | 17 ++---
2 files changed, 11
-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/Makefile
+++ b/samples/bpf/Makefile
@@ -208,7
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
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 dd34b2d..f606c08 100644
--- a/samples/bpf
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 mention which
printf("%s/%llx;", sym->name, addr);
~~~^
%lx
printf(";%s %lld\n", key->waker, count);
~~~^ ~
%ld
Signed-off-by: Tiezhu Yang
---
samples/bpf/Makefile| 4
to
: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
---
include/linux
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-by: T
tches 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: Tiezhu
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
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
/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/syscalls/syscall.tbl
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 | 7
/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/perf/arch/powerpc/entry
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
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
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/
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(+)
diff --git a/tools/perf
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 dwarf
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.c b/tools/perf/util
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
is 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
---
arch/mips/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 44a47ad..f65da197 10
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 {loongson3,bmips,octeon}_cpu_disable(),
just remove them.
Signed-off-by: Tiezhu Yang
---
arch/mips/cavium-octeon/smp.c | 3 ---
nd I/D Cache as per
core chahe, it will confuse userspace program otherwise.
Also I do think the level should be continues.
With this patch, we can see the vcache info as L2 cache
and scache info as L3 cache on the Loongson 3A3000
and 3A4000 platform.
Tested-by: Tiezhu Yang
Thanks
- Jiaxun
Thomas.
instance->port_base =
devm_ioremap_resource(>dev, );
Reported-by: kernel test robot
Signed-off-by: Tiezhu Yang
Acked-by: Randy Dunlap
---
drivers/phy/mediatek/Kconfig | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/phy/mediatek/Kconfig b/drivers/phy/mediatek/K
On 11/25/2020 02:27 PM, Chunfeng Yun wrote:
On Tue, 2020-11-24 at 19:31 -0800, Randy Dunlap wrote:
On 11/24/20 6:24 PM, Chunfeng Yun wrote:
Hi Tiezhu,
On Tue, 2020-11-24 at 17:47 +0800, Tiezhu Yang wrote:
devm_ioremap_resource() will be not built in lib/devres.c if
CONFIG_HAS_IOMEM
On 11/25/2020 11:51 AM, Joe Perches wrote:
On Wed, 2020-11-25 at 11:35 +0800, Tiezhu Yang wrote:
When backport the upstream commit to the internal LTS kernel version,
we usually use the following description [1] [2]:
[ Upstream commit cc6528bc9a0c901c83b8220a2e2617f3354d6dd9 ]
or
commit
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