diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2013-05-10 09:58:02 +1000 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-05-17 13:56:35 +1000 |
| commit | f2614fec1f83c409bc352206f28e6c5acbaa0991 (patch) | |
| tree | 9ce0acb9f80b887cb9d2f9ebab0d37419d268a75 /arch/x86/net/bpf_jit_comp.c | |
| parent | b1b0f0a73224cf7b8864df5addc8d428f71f9ceb (diff) | |
bpf: add comments explaining the schedule_work() operation
Cc: Will Drewry <wad@chromium.org>
Cc: Mircea Gherzan <mgherzan@gmail.com>
Cc: Nicolas Schichan <nschichan@freebox.fr>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Daniel Borkmann <daniel.borkmann@tik.ee.ethz.ch>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/x86/net/bpf_jit_comp.c')
| -rw-r--r-- | arch/x86/net/bpf_jit_comp.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index f66b54086ce5..96598170c074 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -749,6 +749,10 @@ static void jit_free_defer(struct work_struct *arg) void bpf_jit_free(struct sk_filter *fp) { if (fp->bpf_func != sk_run_filter) { + /* + * bpf_jit_free() can be called from softirq; module_free() + * requires process context. + */ struct work_struct *work = (struct work_struct *)fp->bpf_func; INIT_WORK(work, jit_free_defer); |