/* net/atm/atm_misc.c - Various functions for use by ATM drivers */ /* Written 1995-2000 by Werner Almesberger, EPFL ICA */ #include #include #include #include #include #include #include #include int atm_charge(struct atm_vcc *vcc, int truesize) { atm_force_charge(vcc, truesize); if (atomic_read(&sk_atm(vcc)->sk_rmem_alloc) <= sk_atm(vcc)->sk_rcvbuf) return 1; atm_return(vcc, truesize); atomic_inc(&vcc->stats->rx_drop); return 0; } EXPORT_SYMBOL(atm_charge); struct sk_buff *atm_alloc_charge(struct atm_vcc *vcc, int pdu_size, gfp_t gfp_flags) { struct sock *sk = sk_atm(vcc); int guess = SKB_TRUESIZE(pdu_size); atm_force_charge(vcc, guess); if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf) { struct sk_buff *skb = alloc_skb(pdu_size, gfp_flags); if (skb) { atomic_add(skb->truesize-guess, &sk->sk_rmem_alloc); return skb; } } atm_return(vcc, guess); atomic_inc(&vcc->stats->rx_drop); return NULL; } EXPORT_SYMBOL(atm_alloc_charge); /* * atm_pcr_goal returns the positive PCR if it should be rounded up, the * negative PCR if it should be rounded down, and zero if the maximum available * bandwidth should be used. * * The rules are as follows (* = maximum, - = absent (0), x = value "x", * (x+ = x or next value above x, x- = x or next value below): * * min max pcr result min max pcr result * - - - * (UBR only) x - - x+ * - - * * x - * * * - - z z- x - z z- * - * - * x * - x+ * - * * * x * * * * - * z z- x * z z- * - y - y- x y - x+ * - y * y- x y * y- * - y z z- x y z z- * * All non-error cases can be converted with the following simple set of rules: * * if pcr == z then z- * else if min == x && pcr == - then x+ * else if max == y then y- * else * */ int atm_pcr_goal(const struct atm_trafprm *tp) { if (tp->pcr && tp->pcr != ATM_MAX_PCR) return -tp->pcr; if (tp->min_pcr && !tp->pcr) return tp->min_pcr; if (tp->max_pcr != ATM_MAX_PCR) return -tp->max_pcr; return 0; } EXPORT_SYMBOL(atm_pcr_goal); void sonet_copy_stats(struct k_sonet_stats *from, struct sonet_stats *to) { #define __HANDLE_ITEM(i) to->i = atomic_read(&from->i) __SONET_ITEMS #undef __HANDLE_ITEM } EXPORT_SYMBOL(sonet_copy_stats); void sonet_subtract_stats(struct k_sonet_stats *from, struct sonet_stats *to) { #define __HANDLE_ITEM(i) atomic_sub(to->i, &from->i) __SONET_ITEMS #undef __HANDLE_ITEM } EXPORT_SYMBOL(sonet_subtract_stats); 9eef4b1301f9613e43adc86e39'/>
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authorPaul Burton <paul.burton@imgtec.com>2016-09-13 17:56:43 +0100
committerThomas Gleixner <tglx@linutronix.de>2016-09-20 23:24:33 +0200
commit2fd0c93cd219779eef4b1301f9613e43adc86e39 (patch)
tree33bde3e9185d205aac9bedb87df544635b22ffdd
parent57ccdf449f962ab5fc8cbf26479402f13bdb8be7 (diff)
clocksource/mips-gic-timer: Print an error if IRQ setup fails
We've checked for errors from setup_irq_percpu since commit f95ac8558b88 ("CLOCKSOURCE: mips-gic: Add missing error returns checks") but didn't print an error message in the failure case. This makes it very easy to overlook the GIC timer clock event driver not being registered, since we'll generally just use a different clock event driver if that happens. Print an error if IRQ setup fails in order to make such problems harder to miss (ie. not completely silent). Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: linux-mips@linux-mips.org Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Link: http://lkml.kernel.org/r/20160913165644.627-1-paul.burton@imgtec.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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