On Tue, Mar 12, 2024 at 9:51 AM Alexei Starovoitov
wrote:
>
> On Mon, Mar 11, 2024 at 2:35 AM Menglong Dong
> wrote:
> >
> > Add target btf to the function args of bpf_check_attach_target(), then
> > the caller can specify the btf to check.
> >
> > Signed-off-by: Menglong Dong
> > ---
> >
On 2024/3/11 17:26, Tian, Kevin wrote:
From: Liu, Yi L
Sent: Sunday, March 10, 2024 9:06 PM
On 2024/1/16 01:19, Jason Gunthorpe wrote:
On Sun, Nov 26, 2023 at 10:34:21PM -0800, Yi Liu wrote:
+int iommu_replace_device_pasid(struct iommu_domain *domain,
+ struct
On Tue, Mar 12, 2024 at 10:13 AM Alexei Starovoitov
wrote:
>
> On Mon, Mar 11, 2024 at 7:05 PM 梦龙董 wrote:
> >
> > > >
> > > > +LIBBPF_API void bpf_object__free_btfs(struct bpf_object *obj);
> > > > +
> > >
> > > It shouldn't be exported.
> > > libbpf should clean it up when bpf_object is freed.
On Tue, Mar 12, 2024 at 10:42 AM 梦龙董 wrote:
>
> On Tue, Mar 12, 2024 at 10:09 AM Alexei Starovoitov
> wrote:
> >
> > On Mon, Mar 11, 2024 at 7:01 PM 梦龙董 wrote:
> > >
> > > On Tue, Mar 12, 2024 at 9:46 AM Alexei Starovoitov
> > > wrote:
> > > >
> > > > On Mon, Mar 11, 2024 at 2:34 AM Menglong
On Tue, Mar 12, 2024 at 9:56 AM Alexei Starovoitov
wrote:
>
> On Mon, Mar 11, 2024 at 2:35 AM Menglong Dong
> wrote:
> >
> >
> > - err = libbpf_find_attach_btf_id(prog, attach_name,
> > _obj_fd, _type_id);
> > + name_end = strchr(attach_name, ',');
> > +
On Tue, Mar 12, 2024 at 10:09 AM Alexei Starovoitov
wrote:
>
> On Mon, Mar 11, 2024 at 7:01 PM 梦龙董 wrote:
> >
> > On Tue, Mar 12, 2024 at 9:46 AM Alexei Starovoitov
> > wrote:
> > >
> > > On Mon, Mar 11, 2024 at 2:34 AM Menglong Dong
> > > wrote:
> > > >
> > > > In this commit, we add the
On Mon, Mar 11, 2024 at 7:05 PM 梦龙董 wrote:
>
> > >
> > > +LIBBPF_API void bpf_object__free_btfs(struct bpf_object *obj);
> > > +
> >
> > It shouldn't be exported.
> > libbpf should clean it up when bpf_object is freed.
>
> Yes, libbpf will clean up the btfs when bpf_object is freed in
> this
On Mon, Mar 11, 2024 at 7:01 PM 梦龙董 wrote:
>
> On Tue, Mar 12, 2024 at 9:46 AM Alexei Starovoitov
> wrote:
> >
> > On Mon, Mar 11, 2024 at 2:34 AM Menglong Dong
> > wrote:
> > >
> > > In this commit, we add the 'accessed_args' field to struct bpf_prog_aux,
> > > which is used to record the
On Tue, Mar 12, 2024 at 9:55 AM Alexei Starovoitov
wrote:
>
> On Mon, Mar 11, 2024 at 2:35 AM Menglong Dong
> wrote:
> >
> > By default, the kernel btf that we load during loading program will be
> > freed after the programs are loaded in bpf_object_load(). However, we
> > still need to use
On Tue, Mar 12, 2024 at 9:46 AM Alexei Starovoitov
wrote:
>
> On Mon, Mar 11, 2024 at 2:34 AM Menglong Dong
> wrote:
> >
> > In this commit, we add the 'accessed_args' field to struct bpf_prog_aux,
> > which is used to record the accessed index of the function args in
> > btf_ctx_access().
> >
>
On Mon, Mar 11, 2024 at 2:35 AM Menglong Dong
wrote:
>
>
> - err = libbpf_find_attach_btf_id(prog, attach_name,
> _obj_fd, _type_id);
> + name_end = strchr(attach_name, ',');
> + /* for multi-link tracing, use the first target symbol during
> +
On Mon, Mar 11, 2024 at 2:35 AM Menglong Dong
wrote:
>
> By default, the kernel btf that we load during loading program will be
> freed after the programs are loaded in bpf_object_load(). However, we
> still need to use these btf for tracing of multi-link during attaching.
> Therefore, we don't
On Tue, Mar 12, 2024 at 9:49 AM Alexei Starovoitov
wrote:
>
> On Mon, Mar 11, 2024 at 2:34 AM Menglong Dong
> wrote:
> >
> > Refactor the struct modules_array to more general struct ptr_array, which
> > is used to store the pointers.
> >
> > Meanwhiles, introduce the bpf_try_add_ptr(), which
On Mon, Mar 11, 2024 at 2:35 AM Menglong Dong
wrote:
>
> Add target btf to the function args of bpf_check_attach_target(), then
> the caller can specify the btf to check.
>
> Signed-off-by: Menglong Dong
> ---
> include/linux/bpf_verifier.h | 1 +
> kernel/bpf/syscall.c | 6 --
>
On Mon, Mar 11, 2024 at 2:34 AM Menglong Dong
wrote:
>
> Refactor the struct modules_array to more general struct ptr_array, which
> is used to store the pointers.
>
> Meanwhiles, introduce the bpf_try_add_ptr(), which checks the existing of
> the ptr before adding it to the array.
>
> Seems it
On Mon, Mar 11, 2024 at 2:34 AM Menglong Dong
wrote:
>
> In this commit, we add the 'accessed_args' field to struct bpf_prog_aux,
> which is used to record the accessed index of the function args in
> btf_ctx_access().
>
> Meanwhile, we add the function btf_check_func_part_match() to compare the
On Mon, Mar 11, 2024 at 11:29 PM Quentin Monnet wrote:
>
> 2024-03-11 09:35 UTC+ ~ Menglong Dong
> > Add support for the attach types of:
> >
> > BPF_TRACE_FENTRY_MULTI
> > BPF_TRACE_FEXIT_MULTI
> > BPF_MODIFY_RETURN_MULTI
> >
> > Signed-off-by: Menglong Dong
> > ---
> >
On 3/8/2024 2:37 AM, Muhammad Usama Anjum wrote:
diff --git a/tools/testing/selftests/x86/lam.c
b/tools/testing/selftests/x86/lam.c
index 215b8150b7cca..c0f016f45ee17 100644
--- a/tools/testing/selftests/x86/lam.c
+++ b/tools/testing/selftests/x86/lam.c
@@ -1183,7 +1183,7 @@ int main(int
Hi Linus,
Please pull these small execve updates for v6.9-rc1. Details below.
Thanks!
-Kees
The following changes since commit 41bccc98fb7931d63d03f326a746ac4d429c1dd3:
Linux 6.8-rc2 (2024-01-28 17:01:12 -0800)
are available in the Git repository at:
On Mon, Mar 11, 2024 at 2:27 PM James Houghton wrote:
>
> On Mon, Mar 11, 2024 at 12:28 PM Peter Xu wrote:
> >
> > On Mon, Mar 11, 2024 at 11:59:59AM -0700, Axel Rasmussen wrote:
> > > I'd prefer not to require root or CAP_SYS_ADMIN or similar for
> > > UFFDIO_POISON, because those control
Hello:
This series was applied to netdev/net-next.git (main)
by Jakub Kicinski :
On Fri, 08 Mar 2024 23:10:07 +0100 you wrote:
> In this series from Geliang, there are various improvements in MPTCP
> selftests: sharing code, doing actions the same way, colours, etc.
>
> Patch 1 prints all error
Hi Menglong,
kernel test robot noticed the following build errors:
[auto build test ERROR on bpf-next/master]
url:
https://github.com/intel-lab-lkp/linux/commits/Menglong-Dong/bpf-tracing-add-support-to-record-and-check-the-accessed-args/20240311-173954
base: https://git.kernel.org/pub
On Mon, Mar 11, 2024 at 12:28 PM Peter Xu wrote:
>
> On Mon, Mar 11, 2024 at 11:59:59AM -0700, Axel Rasmussen wrote:
> > I'd prefer not to require root or CAP_SYS_ADMIN or similar for
> > UFFDIO_POISON, because those control access to lots more things
> > besides, which we don't necessarily want
On Mon, Mar 11, 2024 at 11:54 AM Ian Rogers wrote:
>
> On Mon, Mar 11, 2024 at 10:49 AM Andrii Nakryiko
> wrote:
> >
> > On Sat, Mar 9, 2024 at 6:05 PM Ian Rogers wrote:
> > >
> > > libbpf depends upon linux/err.h which has a linux/compiler.h
> > > dependency. In the kernel includes, as opposed
On Mon, Mar 11, 2024 at 12:24:24PM -0700, Ian Rogers wrote:
> 5) headers we have just so we can use shell scripts to scrape
> constants for beautifying things in perf trace
> (5) feels like the headers should be alongside the shell scripts to
> avoid polluting tools/include.
> Not that I propose
On Mon, Mar 11, 2024 at 11:59:59AM -0700, Axel Rasmussen wrote:
> I'd prefer not to require root or CAP_SYS_ADMIN or similar for
> UFFDIO_POISON, because those control access to lots more things
> besides, which we don't necessarily want the process using UFFD to be
> able to do. :/
>
>
On Mon, Mar 11, 2024 at 9:34 AM James Clark wrote:
>
>
>
> On 10/03/2024 02:05, Ian Rogers wrote:
> > compiler.h - synced from include/linux/compiler.h, guards were
> > added to definitions to avoid redefinition of macros
> > in libc. ftrace, CONFIG_OBJTOOL and kentry logic was removed as
> >
On Monday, 19 February 2024 16:38:06 CDT Elizabeth Figura wrote:
> +static struct ntsync_obj *get_obj(struct ntsync_device *dev, int fd)
> +{
> + struct file *file = fget(fd);
> + struct ntsync_obj *obj;
> +
> + if (file->f_op != _obj_fops) {
> + fput(file);
> +
On Mon, Mar 11, 2024 at 8:12 AM Peter Xu wrote:
>
> On Mon, Mar 11, 2024 at 03:48:14PM +0100, David Hildenbrand wrote:
> > On 11.03.24 15:35, Peter Xu wrote:
> > > On Mon, Mar 11, 2024 at 10:31:41AM +0100, David Hildenbrand wrote:
> > > > On 09.03.24 20:12, Mirsad Todorovac wrote:
> > > > > Hi,
>
Hi Menglong,
kernel test robot noticed the following build errors:
[auto build test ERROR on bpf-next/master]
url:
https://github.com/intel-lab-lkp/linux/commits/Menglong-Dong/bpf-tracing-add-support-to-record-and-check-the-accessed-args/20240311-173954
base: https://git.kernel.org/pub
On Mon, Mar 11, 2024 at 10:49 AM Andrii Nakryiko
wrote:
>
> On Sat, Mar 9, 2024 at 6:05 PM Ian Rogers wrote:
> >
> > libbpf depends upon linux/err.h which has a linux/compiler.h
> > dependency. In the kernel includes, as opposed to the tools version,
> > linux/compiler.h includes
The pull request you sent on Wed, 6 Mar 2024 19:11:42 -0700:
> git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
> tags/linux_kselftest-kunit-6.9-rc1
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/97ec9715a84e6f0979242e1ea98b9af1a39acf3b
Thank you!
The pull request you sent on Wed, 6 Mar 2024 16:54:43 -0700:
> git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
> tags/linux_kselftest-next-6.9-rc1
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/d451b075f776180c6974fd7bc06296829edc2631
Thank you!
On Sat, Mar 9, 2024 at 6:05 PM Ian Rogers wrote:
>
> libbpf depends upon linux/err.h which has a linux/compiler.h
> dependency. In the kernel includes, as opposed to the tools version,
> linux/compiler.h includes linux/compiler_attributes.h which defines
> __printf. As the libbpf.c __printf
On 3/11/2024 10:02 AM, Muhammad Usama Anjum wrote:
On 3/9/24 6:06 AM, Chang S. Bae wrote:
On 3/7/2024 10:37 AM, Muhammad Usama Anjum wrote:
-static void check_cpuid_xtiledata(void)
+static int check_cpuid_xtiledata(void)
{
uint32_t eax, ebx, ecx, edx;
@@ -153,12 +160,16 @@ static
Soft reminder!
On 3/4/24 8:59 PM, Muhammad Usama Anjum wrote:
> The following line is missing from the test's execution. Add it to make
> it fully TAP conformant:
> # Totals: pass:27 fail:0 xfail:0 xpass:0 skip:0 error:0
>
> Signed-off-by: Muhammad Usama Anjum
> ---
>
On 3/8/24 1:39 AM, Kees Cook wrote:
> On Thu, Mar 07, 2024 at 02:22:27PM +0500, Muhammad Usama Anjum wrote:
>> I've tested this patch. Still getting same failures.
>
> Okay, thanks for testing!
>
> What environment are you testing under? It would seem like some unexpected
> userspace conditions
On 3/9/24 6:06 AM, Chang S. Bae wrote:
> On 3/7/2024 10:37 AM, Muhammad Usama Anjum wrote:
>>
>> diff --git a/tools/testing/selftests/x86/amx.c
>> b/tools/testing/selftests/x86/amx.c
>> index d884fd69dd510..5d1ca0bbaaae7 100644
>> --- a/tools/testing/selftests/x86/amx.c
>> +++
On 10/03/2024 02:05, Ian Rogers wrote:
> compiler.h - synced from include/linux/compiler.h, guards were
> added to definitions to avoid redefinition of macros
> in libc. ftrace, CONFIG_OBJTOOL and kentry logic was removed as
> redundant.
>
Hi Ian,
This commit breaks the Arm build (and
On 3/11/24 10:17 AM, Jakub Kicinski wrote:
> On Sat, 9 Mar 2024 19:45:15 +0100 Mirsad Todorovac wrote:
>> In the vanilla net-next tree build of v6.8-rc7-2348-g75c2946db360, with
>> up-to-date
>> iproute2 built tools, fcnal-test.sh reports certain failures:
>>
>>
On Mon, Mar 11, 2024 at 8:44 AM Michael S. Tsirkin wrote:
>
> On Sat, Mar 09, 2024 at 06:05:08PM -0800, Ian Rogers wrote:
> > An issue was reported with clang and llvm libc where the noinline
> > attribute [1] was being expanded due to the #define in
> > linux/compiler.h (now in
On Sat, 9 Mar 2024 19:45:15 +0100 Mirsad Todorovac wrote:
> In the vanilla net-next tree build of v6.8-rc7-2348-g75c2946db360, with
> up-to-date
> iproute2 built tools, fcnal-test.sh reports certain failures:
>
>
On Sat, Mar 09, 2024 at 06:05:08PM -0800, Ian Rogers wrote:
> An issue was reported with clang and llvm libc where the noinline
> attribute [1] was being expanded due to the #define in
> linux/compiler.h (now in compiler_attributes.h). The expansion caused
> the __attribute__ to appear twice and
On Sun, Mar 10, 2024 at 4:25 AM Miguel Ojeda
wrote:
>
> On Sun, Mar 10, 2024 at 3:06 AM Ian Rogers wrote:
> >
> > [1] https://clang.llvm.org/docs/AttributeReference.html#noinline
> > Reported-by: Christopher Di Bella
>
> Out of curiosity, was this due to the `[[gnu::noinline]]` or similar
> in
2024-03-11 09:35 UTC+ ~ Menglong Dong
> Add support for the attach types of:
>
> BPF_TRACE_FENTRY_MULTI
> BPF_TRACE_FEXIT_MULTI
> BPF_MODIFY_RETURN_MULTI
>
> Signed-off-by: Menglong Dong
> ---
> tools/bpf/bpftool/common.c | 3 +
> tools/lib/bpf/bpf.c| 10 +++
>
Hi Sasha,
On 11/03/2024 16:11, Sasha Levin wrote:
> From: Paolo Abeni
>
> [ Upstream commit b4b51d36bbaa3ddb93b3e1ca3a1ef0aa629d6521 ]
Thank you for having backported this patch to v6.7 and v6.6 versions.
But it looks like it depends on commit 9369777c2939 ("selftests: mptcp:
add
From: Paolo Abeni
[ Upstream commit b4b51d36bbaa3ddb93b3e1ca3a1ef0aa629d6521 ]
The mptcp diag interface already experienced a few locking bugs
that lockdep and appropriate coverage have detected in advance.
Let's add a test-case triggering the relevant code path, to prevent
similar issues in
From: Paolo Abeni
[ Upstream commit b4b51d36bbaa3ddb93b3e1ca3a1ef0aa629d6521 ]
The mptcp diag interface already experienced a few locking bugs
that lockdep and appropriate coverage have detected in advance.
Let's add a test-case triggering the relevant code path, to prevent
similar issues in
On Mon, Mar 11, 2024 at 03:48:14PM +0100, David Hildenbrand wrote:
> On 11.03.24 15:35, Peter Xu wrote:
> > On Mon, Mar 11, 2024 at 10:31:41AM +0100, David Hildenbrand wrote:
> > > On 09.03.24 20:12, Mirsad Todorovac wrote:
> > > > Hi,
> > > >
> > > > Routine run of the test in net-next gave also
On 11.03.24 15:35, Peter Xu wrote:
On Mon, Mar 11, 2024 at 10:31:41AM +0100, David Hildenbrand wrote:
On 09.03.24 20:12, Mirsad Todorovac wrote:
Hi,
Routine run of the test in net-next gave also this mm unit error.
root@defiant:tools/testing/selftests/mm# ./uffd-unit-tests
Testing UFFDIO_API
On Mon, Mar 11, 2024 at 10:31:41AM +0100, David Hildenbrand wrote:
> On 09.03.24 20:12, Mirsad Todorovac wrote:
> > Hi,
> >
> > Routine run of the test in net-next gave also this mm unit error.
> >
> > root@defiant:tools/testing/selftests/mm# ./uffd-unit-tests
> > Testing UFFDIO_API (with
write_bm_pid_to_resctrl() uses resctrl_val to check test name which is
not a good interface generic resctrl FS functions should provide.
Only MBM and CMT tests define mongrp so the test name check in
write_bm_pid_to_resctrl() can be changed to depend simply on mongrp
being non-NULL.
With last
Nothing during MBA test uses mongrp even if it has been defined ever
since the introduction of the MBA test in the commit 01fee6b4d1f9
("selftests/resctrl: Add MBA test").
Remove the mongrp from MBA test.
Signed-off-by: Ilpo Järvinen
---
tools/testing/selftests/resctrl/mba_test.c | 1 -
1 file
The struct resctrl_val_param has control and monitor groups as char
arrays but they are not supposed to be mutated within resctrl_val().
Convert the ctrlgrp and mongrp char array within resctrl_val_param to
plain const char pointers and adjust the strlen() based checks to
check NULL instead.
Control group, monitor group and resctrl_val are not mutated and
should not be mutated within resctrlfs.c functions.
Mark this by using const char * for the arguments.
Signed-off-by: Ilpo Järvinen
---
tools/testing/selftests/resctrl/resctrl.h | 7 ---
bw_report is only needed for selecting the correct value from the
values IMC measured. It is a member in the resctrl_val_param struct and
is always set to "reads". The value is then checked in resctrl_val()
using validate_bw_report_request() that besides validating the input,
assumes it can mutate
The struct resctrl_val_param is there to customize behavior inside
resctrl_val() which is currently not used to full extent and there are
number of strcmp()s for test name in resctrl_val done by resctrl_val().
Create ->init() hook into the struct resctrl_val_param to cleanly
do per test
The measurement done in resctrl_val() varies depending on test type.
The decision for how to measure is decided based on the string compare
to test name which is quite inflexible.
Add ->measure() callback into the struct resctrl_val_param to allow
each test to provide necessary code as a function
measure_val() is awfully generic name so rename it to measure_mem_bw()
to describe better what it does and document the function parameters.
Signed-off-by: Ilpo Järvinen
---
tools/testing/selftests/resctrl/resctrl_val.c | 12 +---
1 file changed, 9 insertions(+), 3 deletions(-)
diff
'bm_pid' and 'ppid' are global variables. As they are used by different
processes and in signal handler, they cannot be entirely converted into
local variables.
The scope of those variables can still be reduced into resctrl_val.c
only. As PARENT_EXIT() macro is using 'ppid', make it a function in
A few functions receive PIDs through int arguments. PIDs variables
should be of type pid_t, not int.
Convert pid arguments from int to pid_t.
Signed-off-by: Ilpo Järvinen
---
tools/testing/selftests/resctrl/cache.c | 6 +++---
tools/testing/selftests/resctrl/resctrl.h | 4 ++--
Both initialize_mem_bw_resctrl() and initialize_llc_occu_resctrl() that
are called from resctrl_val() need to determine domain ID to construct
resctrl fs related paths. Both functions do it by taking CPU ID which
neither needs for any other purpose than determining the domain ID.
Consolidate
For MBM/MBA tests, measure_vals() calls get_mem_bw_imc() that performs
the measurement over a duration of sleep(1) call. The memory bandwidth
numbers from IMC are derived over this duration. The resctrl FS derived
memory bandwidth, however, is calculated inside measure_vals() and only
takes delta
The open() side handles fds in a for loop but close() is based on two
fixed indexes READ and WRITE.
Match the close() side with the open() side by using for loop for
consistency.
Signed-off-by: Ilpo Järvinen
---
tools/testing/selftests/resctrl/resctrl_val.c | 7 +++
1 file changed, 3
Hi all,
This series does a number of cleanups into resctrl_val() and
generalizes it by removing test name specific handling from the
function.
One of the changes improves MBA/MBM measurement by narrowing down the
period the resctrl FS derived memory bandwidth numbers are measured
over. My feel
Richard Gobert wrote:
> Willem de Bruijn wrote:
> > Richard Gobert wrote:
> >> Eric Dumazet wrote:
> >>> On Sat, Mar 9, 2024 at 4:35 PM Richard Gobert
> >>> wrote:
>
> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
> iph->id, ...) against all packets in a
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> Eric Dumazet wrote:
>>> On Sat, Mar 9, 2024 at 4:35 PM Richard Gobert
>>> wrote:
{inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
iph->id, ...) against all packets in a loop. These flush checks are
relevant
On Thu, Mar 07, 2024 at 11:37:22PM +0500, Muhammad Usama Anjum wrote:
> diff --git a/tools/testing/selftests/x86/lam.c
> b/tools/testing/selftests/x86/lam.c
> index 215b8150b7cca..c0f016f45ee17 100644
> --- a/tools/testing/selftests/x86/lam.c
> +++ b/tools/testing/selftests/x86/lam.c
> @@ -1183,7
Richard Gobert wrote:
> Eric Dumazet wrote:
> > On Sat, Mar 9, 2024 at 4:35 PM Richard Gobert
> > wrote:
> >>
> >> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
> >> iph->id, ...) against all packets in a loop. These flush checks are
> >> relevant only to tcp flows, and as
In this commit, we add some testcases for the following attach types:
BPF_TRACE_FENTRY_MULTI
BPF_TRACE_FEXIT_MULTI
BPF_MODIFY_RETURN_MULTI
Signed-off-by: Menglong Dong
---
net/bpf/test_run.c| 3 +
.../selftests/bpf/bpf_testmod/bpf_testmod.c | 49
Add support for the attach types of:
BPF_TRACE_FENTRY_MULTI
BPF_TRACE_FEXIT_MULTI
BPF_MODIFY_RETURN_MULTI
Signed-off-by: Menglong Dong
---
tools/bpf/bpftool/common.c | 3 +
tools/lib/bpf/bpf.c| 10 +++
tools/lib/bpf/bpf.h| 6 ++
tools/lib/bpf/libbpf.c | 168
By default, the kernel btf that we load during loading program will be
freed after the programs are loaded in bpf_object_load(). However, we
still need to use these btf for tracing of multi-link during attaching.
Therefore, we don't free the btfs until the bpf object is closed if any
bpf programs
In this commit, we add the support to allow attaching a tracing BPF
program to multi hooks, which is similar to BPF_TRACE_KPROBE_MULTI.
The use case is obvious. For now, we have to create a BPF program for each
kernel function, for which we want to trace, even through all the program
have the
Add target btf to the function args of bpf_check_attach_target(), then
the caller can specify the btf to check.
Signed-off-by: Menglong Dong
---
include/linux/bpf_verifier.h | 1 +
kernel/bpf/syscall.c | 6 --
kernel/bpf/trampoline.c | 1 +
kernel/bpf/verifier.c| 8
Introduce the struct bpf_tramp_multi_link, which is used to attach
a bpf_link to multi trampoline. Meanwhile, introduce corresponding
function bpf_trampoline_multi_{link,unlink}_prog.
Signed-off-by: Menglong Dong
---
include/linux/bpf.h | 14
kernel/bpf/trampoline.c | 47
For now, bpf_tramp_link is added to the hash list of tr->progs_hlist when
attaching. This means that bpf_link and trampoline is one-to-one, and is
not friendly to the multi-link trampoline that we commit in the following
patches.
Therefore, now we introduce the struct bpf_tramp_link_conn to be
Refactor the struct modules_array to more general struct ptr_array, which
is used to store the pointers.
Meanwhiles, introduce the bpf_try_add_ptr(), which checks the existing of
the ptr before adding it to the array.
Seems it should be moved to another files in "lib", and I'm not sure where
to
In this commit, we add the 'accessed_args' field to struct bpf_prog_aux,
which is used to record the accessed index of the function args in
btf_ctx_access().
Meanwhile, we add the function btf_check_func_part_match() to compare the
accessed function args of two function prototype. This function
For now, the BPF program of type BPF_PROG_TYPE_TRACING is not allowed to
be attached to multiple hooks, and we have to create a BPF program for
each kernel function, for which we want to trace, even through all the
program have the same (or similar) logic. This can consume extra memory,
and make
On 09.03.24 20:12, Mirsad Todorovac wrote:
Hi,
Routine run of the test in net-next gave also this mm unit error.
root@defiant:tools/testing/selftests/mm# ./uffd-unit-tests
Testing UFFDIO_API (with syscall)... done
Testing UFFDIO_API (with /dev/userfaultfd)... done
Testing register-ioctls on
> From: Liu, Yi L
> Sent: Sunday, March 10, 2024 9:06 PM
>
> On 2024/1/16 01:19, Jason Gunthorpe wrote:
> > On Sun, Nov 26, 2023 at 10:34:21PM -0800, Yi Liu wrote:
> >> +int iommu_replace_device_pasid(struct iommu_domain *domain,
> >> + struct device *dev, ioasid_t pasid)
Willem de Bruijn wrote:
> Richard Gobert wrote:
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are
>> relevant only to tcp flows, and as such they're used to determine whether
>> the packets can be merged
Eric Dumazet wrote:
> On Sat, Mar 9, 2024 at 4:35 PM Richard Gobert
> wrote:
>>
>> {inet,ipv6}_gro_receive functions perform flush checks (ttl, flags,
>> iph->id, ...) against all packets in a loop. These flush checks are
>> relevant only to tcp flows, and as such they're used to determine
Hi Nicolas,
On Thu, Mar 07, 2024 at 01:05:12PM -0500, Nicolas Dufresne wrote:
> Le jeudi 29 février 2024 à 10:02 +0100, Maxime Ripard a écrit :
> > On Wed, Feb 28, 2024 at 07:55:25PM -0300, Helen Koike wrote:
> > > This patch introduces a `.gitlab-ci` file along with a `ci/` folder,
> > >
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