On Wed, 2019-02-06 at 11:23 -0500, Steven Rostedt wrote: > On Wed, 16 Jan 2019 16:32:58 -0800 > Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx> wrote: > > > Add new flag for handling freeing of special permissioned memory in vmalloc > > and remove places where memory was set RW before freeing which is no longer > > needed. > > > > In kprobes, bpf and ftrace this just adds the flag, and removes the now > > unneeded set_memory_ calls before calling vfree. > > > > In modules, the freeing of init sections is moved to a work queue, since > > freeing of RO memory is not supported in an interrupt by vmalloc. > > Instead of call_rcu, it now uses synchronize_rcu() in the work queue. > > > > Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx> > > Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx> > > Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx> > > Cc: Alexei Starovoitov <ast@xxxxxxxxxx> > > Cc: Jessica Yu <jeyu@xxxxxxxxxx> > > Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> > > Cc: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> > > Signed-off-by: Rick Edgecombe <rick.p.edgecombe@xxxxxxxxx> > > --- > > arch/x86/kernel/ftrace.c | 6 +-- > > For the ftrace code. > > Acked-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> > > -- Steve > Thanks! Rick > > arch/x86/kernel/kprobes/core.c | 7 +--- > > include/linux/filter.h | 16 ++----- > > kernel/bpf/core.c | 1 - > > kernel/module.c | 77 +++++++++++++++++----------------- > > 5 files changed, 45 insertions(+), 62 deletions(-) > >
