> On Aug 5, 2024, at 14:46, zhangyongde.zyd <zhangwarden@xxxxxxxxx> wrote: > > From: Wardenjohn <zhangwarden@xxxxxxxxx> > > One system may contains more than one livepatch module. We can see > which patch is enabled. If some patches applied to one system > modifing the same function, livepatch will use the function enabled > on top of the function stack. However, we can not excatly know > which function of which patch is now enabling. > > This patch introduce one sysfs attribute of "using" to klp_func. > For example, if there are serval patches make changes to function > "meminfo_proc_show", the attribute "enabled" of all the patch is 1. > With this attribute, we can easily know the version enabling belongs > to which patch. > > The "using" is set as three state. 0 is disabled, it means that this > version of function is not used. 1 is running, it means that this > version of function is now running. -1 is unknown, it means that > this version of function is under transition, some task is still > chaning their running version of this function. > > cat /sys/kernel/livepatch/<patch1>/<object1>/<function1,sympos>/using -> 0 > means that the function1 of patch1 is disabled. > > cat /sys/kernel/livepatch/<patchN>/<object1>/<function1,sympos>/using -> 1 > means that the function1 of patchN is enabled. > > cat /sys/kernel/livepatch/<patchN>/<object1>/<function1,sympos>/using -> -1 > means that the function1 of patchN is under transition and unknown. > > Signed-off-by: Wardenjohn <zhangwarden@xxxxxxxxx> > Hi maintainers. How about your suggestions to patch V2? According to your suggestion, I made some new changes to the V1 patch. I am waiting for your suggestions. Thanks. Wardenjohn.
