On Wed, 2022-08-31 at 12:12 +0800, Xi Ruoyao wrote: > On Wed, 2022-08-31 at 09:23 +0800, Tiezhu Yang wrote: > > > > > > On 08/30/2022 10:46 PM, Huacai Chen wrote: > > > Hi, Tiezhu, > > > > > > On Tue, Aug 30, 2022 at 7:10 PM Tiezhu Yang > > > <yangtiezhu@xxxxxxxxxxx> wrote: > > > > > > > > For now, BPF JIT for LoongArch is supported, update > > > > loongson3_defconfig to > > > > enable BPF_JIT to allow the kernel to generate native code when > > > > a program > > > > is loaded into the kernel, and also enable TEST_BPF to test BPF > > > > JIT. > > > > > > > > Signed-off-by: Tiezhu Yang <yangtiezhu@xxxxxxxxxxx> > > > > --- > > > > arch/loongarch/configs/loongson3_defconfig | 2 ++ > > > > 1 file changed, 2 insertions(+) > > > > > > > > diff --git a/arch/loongarch/configs/loongson3_defconfig > > > > b/arch/loongarch/configs/loongson3_defconfig > > > > index 3712552..93dc072 100644 > > > > --- a/arch/loongarch/configs/loongson3_defconfig > > > > +++ b/arch/loongarch/configs/loongson3_defconfig > > > > @@ -4,6 +4,7 @@ CONFIG_POSIX_MQUEUE=y > > > > CONFIG_NO_HZ=y > > > > CONFIG_HIGH_RES_TIMERS=y > > > > CONFIG_BPF_SYSCALL=y > > > > +CONFIG_BPF_JIT=y > > > > CONFIG_PREEMPT=y > > > > CONFIG_BSD_PROCESS_ACCT=y > > > > CONFIG_BSD_PROCESS_ACCT_V3=y > > > > @@ -801,3 +802,4 @@ CONFIG_MAGIC_SYSRQ=y > > > > CONFIG_SCHEDSTATS=y > > > > # CONFIG_DEBUG_PREEMPT is not set > > > > # CONFIG_FTRACE is not set > > > > +CONFIG_TEST_BPF=m > > > I don't want the test module be built by default, but I don't > > > insist > > > if you have a strong requirement. > > > > > > > Hi Huacai, > > > > It is useful to enable TEST_BPF in default config, otherwise we > > need to use "make menuconfig" to select it manually if we want > > to test bpf jit, and build it as a module by default has no side > > effect, so I prefer to enable TEST_BPF in default config. > > IMO we shouldn't enable a test feature which is never used by 99% of > users in the default. P. S. this is not a strong option. CONFIG_TEST_BPF seems enabled by default for S390, and I'm not sure if defconfig is designed for "kernel developers" or "distro builders", or even "normal users". -- Xi Ruoyao <xry111@xxxxxxxxxxx> School of Aerospace Science and Technology, Xidian University
