When CONFIG_BPF_JIT_ALWAYS_ON is enabled, kernel has limitation for
bpf_jit_enable, so it has fixed value 1 and we cannot set it to 2
for JIT opcode dumping; this patch is to update the doc for it.
Suggested-by: Daniel Borkmann <dan...@iogearbox.net>
Signed-off-by: Leo Yan <leo@l
On Fri, Apr 27, 2018 at 11:44:44AM +0200, Daniel Borkmann wrote:
> On 04/26/2018 04:26 AM, Leo Yan wrote:
> > When CONFIG_BPF_JIT_ALWAYS_ON is enabled, kernel has limitation for
> > bpf_jit_enable, so it has fixed value 1 and we cannot set it to 2
> > for JIT opcod
On Wed, Apr 25, 2018 at 05:37:39PM +0200, Daniel Borkmann wrote:
> On 04/25/2018 04:14 PM, Alexei Starovoitov wrote:
> > On Wed, Apr 25, 2018 at 05:25:47PM +0800, Leo Yan wrote:
> >>
> >> If we have concern for security issue, should we remove support for
> >
When CONFIG_BPF_JIT_ALWAYS_ON is enabled, kernel has limitation for
bpf_jit_enable, so it has fixed value 1 and we cannot set it to 2
for JIT opcode dumping; this patch is to update the doc for it.
Signed-off-by: Leo Yan <leo@linaro.org>
---
Documentation/networking/filter.txt | 6 +++
On Fri, Apr 20, 2018 at 03:52:13PM +0200, Jesper Dangaard Brouer wrote:
> On Fri, 20 Apr 2018 14:21:16 +0100
> Daniel Thompson <daniel.thomp...@linaro.org> wrote:
>
> > On Fri, Apr 20, 2018 at 02:10:04PM +0200, Jesper Dangaard Brouer wrote:
> > >
> > > On
Hi Daniel,
On Wed, Apr 25, 2018 at 11:12:21AM +0200, Daniel Borkmann wrote:
> On 04/25/2018 10:18 AM, Leo Yan wrote:
> > After enabled BPF_JIT_ALWAYS_ON config, bpf_jit_enable always equals to
> > 1; it is impossible to set 'bpf_jit_enable = 2' and the kernel has no
>
.
Signed-off-by: Leo Yan <leo@linaro.org>
---
net/core/sysctl_net_core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index b1a2c5e..6a39b22 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_
On Wed, Apr 18, 2018 at 10:21:25PM -0700, Alexei Starovoitov wrote:
> On Thu, Apr 19, 2018 at 01:12:49PM +0800, Leo Yan wrote:
> > On Wed, Apr 18, 2018 at 09:47:45PM -0700, Alexei Starovoitov wrote:
> > > On Thu, Apr 19, 2018 at 09:34:05AM +0800, Leo Yan wrote:
> > &g
On Wed, Apr 18, 2018 at 09:47:45PM -0700, Alexei Starovoitov wrote:
> On Thu, Apr 19, 2018 at 09:34:05AM +0800, Leo Yan wrote:
> > The code defines macro 'PAGE_OFFSET' and uses it to decide if the
> > address is in kernel space or not. But different architecture has
> > diffe
benefit of this refactor is program sampleip
can be used without architecture dependency.
The patch series has been tested on ARM64 Hikey960 boards.
Leo Yan (5):
samples/bpf: Fix typo in comment
samples/bpf: Dynamically allocate structure 'syms'
samples/bpf: Use NULL for failed to find symbol
Fix typo by replacing 'iif' with 'if'.
Signed-off-by: Leo Yan <leo@linaro.org>
---
samples/bpf/bpf_load.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/samples/bpf/bpf_load.c b/samples/bpf/bpf_load.c
index bebe418..28e4678 100644
--- a/samples/bpf/bpf_load.c
.
This commit changes to use NULL pointer for failed to find symbol, user
functions need to check the pointer is NULL and get to know the address
has no corresponding kernel symbol for it.
Signed-off-by: Leo Yan <leo@linaro.org>
---
samples/bpf/bpf_load.c | 4 ++--
1 file changed, 2 insertions
bss dec hex filename
188411172 5199776 5219789 4fa5cd samples/bpf/sampleip
After:
textdata bss dec hex filename
191011188 399792 420081 668f1 samples/bpf/sampleip
Signed-off-by: Leo Yan <leo@linaro.org>
---
samples/bpf/bpf_load.
falls into kernel space or not, and removes
macro 'PAGE_OFFSET' as it isn't used anymore. As result, this program
has no architecture dependency.
Signed-off-by: Leo Yan <leo@linaro.org>
---
samples/bpf/sampleip_user.c | 8 +++-
1 file changed, 3 insertions(+), 5 deletions(-)
diff
This commit handles NULL pointer returned by ksym_search() to directly
print address hexadecimal value, the change is applied in 'trace_event',
'spintest' and 'offwaketime' programs.
Signed-off-by: Leo Yan <leo@linaro.org>
---
samples/bpf/offwaketime_user.c | 5 +
sampl
On Mon, Feb 26, 2018 at 11:26:52AM +0100, Daniel Borkmann wrote:
> On 02/26/2018 02:19 AM, Leo Yan wrote:
[...]
> > CPU states statistics:
> > state(ms) cstate-0cstate-1cstate-2pstate-0pstate-1
> > pstate-2pstate-3pstate-4
> >
684 1284
CPU-7 125 15238 102704 398 20 665
786 1197
Cc: Daniel Lezcano <daniel.lezc...@linaro.org>
Cc: Vincent Guittot <vincent.guit...@linaro.org>
Signed-off-by: Leo Yan <leo@linaro.org>
---
samples/bpf/Makefil
Hi Jesper,
On Wed, Jan 31, 2018 at 10:14:27AM +0100, Jesper Dangaard Brouer wrote:
> On Wed, 31 Jan 2018 02:29:59 +0800
> Leo Yan <leo@linaro.org> wrote:
>
> > CPU 0
> > State: Duration(ms) Distribution
> > cstate 0 : 47555|*
3 : 952 ||
pstate 4 : 0||
Cc: Daniel Lezcano <daniel.lezc...@linaro.org>
Cc: Vincent Guittot <vincent.guit...@linaro.org>
Signed-off-by: Leo Yan <leo@linaro.org>
---
sa
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