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ppc: bpf_jit: can call module_free() from any context

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Followup patch on module_free()/vfree() that takes care of the rest, so
no longer this workaround with work_struct is needed.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Matt Evans <matt@ozlabs.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Borkmann 2013-05-20 08:05:50 +00:00 committed by David S. Miller
parent 71cea17ed3
commit ed900ffb73
1 changed files with 3 additions and 16 deletions
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19
arch/powerpc/net/bpf_jit_comp.c
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@ -650,8 +650,7 @@ void bpf_jit_compile(struct sk_filter *fp)
proglen = cgctx.idx * 4; proglen = cgctx.idx * 4;
alloclen = proglen + FUNCTION_DESCR_SIZE; alloclen = proglen + FUNCTION_DESCR_SIZE;
image = module_alloc(max_t(unsigned int, alloclen, image = module_alloc(alloclen);
sizeof(struct work_struct)));
if (!image) if (!image)
goto out; goto out;
@ -688,20 +687,8 @@ out:
return; return;
} }
static void jit_free_defer(struct work_struct *arg)
{
module_free(NULL, arg);
}
/* run from softirq, we must use a work_struct to call
* module_free() from process context
*/
void bpf_jit_free(struct sk_filter *fp) void bpf_jit_free(struct sk_filter *fp)
{ {
if (fp->bpf_func != sk_run_filter) { if (fp->bpf_func != sk_run_filter)
struct work_struct *work = (struct work_struct *)fp->bpf_func; module_free(NULL, fp->bpf_func);
INIT_WORK(work, jit_free_defer);
schedule_work(work);
}
} }