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Commit ed900ffb authored by Daniel Borkmann's avatar Daniel Borkmann Committed by David S. Miller
Browse files

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



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: default avatarDaniel Borkmann <dborkman@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Matt Evans <matt@ozlabs.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 71cea17e

arch/powerpc/net/bpf_jit_comp.c

+3 −16
Original line number Diff line number Diff line
@@ -650,8 +650,7 @@ void bpf_jit_compile(struct sk_filter *fp) 


	proglen = cgctx.idx * 4;

	alloclen = proglen + FUNCTION_DESCR_SIZE;

	image = module_alloc(max_t(unsigned int, alloclen,

				   sizeof(struct work_struct)));

	image = module_alloc(alloclen);

	if (!image)

		goto out;
@@ -688,20 +687,8 @@ void bpf_jit_compile(struct sk_filter *fp) 
	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)

{

	if (fp->bpf_func != sk_run_filter) {

		struct work_struct *work = (struct work_struct *)fp->bpf_func;



		INIT_WORK(work, jit_free_defer);

		schedule_work(work);

	}

	if (fp->bpf_func != sk_run_filter)

		module_free(NULL, fp->bpf_func);

}