/**
 * might_alloc - Mark possible allocation sites
 * @gfp_mask: gfp_t flags that would be used to allocate
 *
 * Similar to might_sleep() and other annotations, this can be used in functions
 * that might allocate, but often don't. Compiles to nothing without
 * CONFIG_LOCKDEP. Includes a conditional might_sleep() if @gfp allows blocking.
 */

Address @bz comment and add __unused.

manu accepted this revision.Jan 28 2023, 8:31 AM

This revision is now accepted and ready to land.Jan 28 2023, 8:31 AM

Closed by commit rG19be627cfda7: linuxkpi: Define `might_alloc()` (authored by dumbbell). · Explain WhyJan 30 2023, 10:18 PM

This revision was automatically updated to reflect the committed changes.

dumbbell added a commit: rG19be627cfda7: linuxkpi: Define `might_alloc()`.

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sys/

compat/

linuxkpi/

common/

include/

linux/

mm.h

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sys/compat/linuxkpi/common/include/linux/mm.h

Show First 20 Lines • Show All 83 Lines • ▼ Show 20 Lines	firewire_output(struct ifnet ifp, struct mbuf m, const struct sockaddr *dst,
struct m_tag *mtag;		struct m_tag *mtag;
union fw_encap *enc;		union fw_encap *enc;
struct fw_hwaddr *destfw;		struct fw_hwaddr *destfw;
uint8_t speed;		uint8_t speed;
uint16_t psize, fsize, dsize;		uint16_t psize, fsize, dsize;
struct mbuf *mtail;		struct mbuf *mtail;
int unicast, dgl, foff;		int unicast, dgl, foff;
static int next_dgl;		static int next_dgl;
#ifdef INET		#if defined(INET) \|\| defined(INET6)
int is_gw;		int is_gw = 0;
#endif		#endif

#ifdef MAC		#ifdef MAC
error = mac_ifnet_check_transmit(ifp, m);		error = mac_ifnet_check_transmit(ifp, m);
if (error)		if (error)
goto bad;		goto bad;
#endif		#endif

if (!((ifp->if_flags & IFF_UP) &&		if (!((ifp->if_flags & IFF_UP) &&
(ifp->if_drv_flags & IFF_DRV_RUNNING))) {		(ifp->if_drv_flags & IFF_DRV_RUNNING))) {
error = ENETDOWN;		error = ENETDOWN;
goto bad;		goto bad;
}		}

		#if defined(INET) \|\| defined(INET6)
		if (ro != NULL && ro->ro_rt != NULL &&
		(ro->ro_rt->rt_flags & RTF_GATEWAY) != 0)
		is_gw = 1;
		#endif
/*		/*
* For unicast, we make a tag to store the lladdr of the		* For unicast, we make a tag to store the lladdr of the
* destination. This might not be the first time we have seen		* destination. This might not be the first time we have seen
* the packet (for instance, the arp code might be trying to		* the packet (for instance, the arp code might be trying to
* re-send it after receiving an arp reply) so we only		* re-send it after receiving an arp reply) so we only
* allocate a tag if there isn't one there already. For		* allocate a tag if there isn't one there already. For
* multicast, we will eventually use a different tag to store		* multicast, we will eventually use a different tag to store
* the channel number.		* the channel number.
▲ Show 20 Lines • Show All 52 Lines • ▼ Show 20 Lines	case AF_ARP:
m_adj(m, -ah->ar_hln);		m_adj(m, -ah->ar_hln);
break;		break;
}		}
#endif		#endif

#ifdef INET6		#ifdef INET6
case AF_INET6:		case AF_INET6:
if (unicast) {		if (unicast) {
error = nd6_storelladdr(fc->fc_ifp, m, dst,		error = nd6_resolve(fc->fc_ifp, is_gw, m, dst,
(u_char *) destfw, NULL);		(u_char *) destfw, NULL);
if (error)		if (error)
return (error);		return (error == EWOULDBLOCK ? 0 : error);
}		}
type = ETHERTYPE_IPV6;		type = ETHERTYPE_IPV6;
break;		break;
#endif		#endif

default:		default:
if_printf(ifp, "can't handle af%d\n", dst->sa_family);		if_printf(ifp, "can't handle af%d\n", dst->sa_family);
error = EAFNOSUPPORT;		error = EAFNOSUPPORT;
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sys/compat/linuxkpi/common/include/linux/mm.h

linuxkpi: Define `might_alloc()` as a no-op
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