/* Support for hardware buffer manager. * * Copyright (C) 2016 Marvell * * Gregory CLEMENT * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. */ #include #include #include #include void hwbm_buf_free(struct hwbm_pool *bm_pool, void *buf) { if (likely(bm_pool->frag_size <= PAGE_SIZE)) skb_free_frag(buf); else kfree(buf); } EXPORT_SYMBOL_GPL(hwbm_buf_free); /* Refill processing for HW buffer management */ int hwbm_pool_refill(struct hwbm_pool *bm_pool, gfp_t gfp) { int frag_size = bm_pool->frag_size; void *buf; if (likely(frag_size <= PAGE_SIZE)) buf = netdev_alloc_frag(frag_size); else buf = kmalloc(frag_size, gfp); if (!buf) return -ENOMEM; if (bm_pool->construct) if (bm_pool->construct(bm_pool, buf)) { hwbm_buf_free(bm_pool, buf); return -ENOMEM; } return 0; } EXPORT_SYMBOL_GPL(hwbm_pool_refill); int hwbm_pool_add(struct hwbm_pool *bm_pool, unsigned int buf_num, gfp_t gfp) { int err, i; unsigned long flags; spin_lock_irqsave(&bm_pool->lock, flags); if (bm_pool->buf_num == bm_pool->size) { pr_warn("pool already filled\n"); spin_unlock_irqrestore(&bm_pool->lock, flags); return bm_pool->buf_num; } if (buf_num + bm_pool->buf_num > bm_pool->size) { pr_warn("cannot allocate %d buffers for pool\n", buf_num); spin_unlock_irqrestore(&bm_pool->lock, flags); return 0; } if ((buf_num + bm_pool->buf_num) < bm_pool->buf_num) { pr_warn("Adding %d buffers to the %d current buffers will overflow\n", buf_num, bm_pool->buf_num); spin_unlock_irqrestore(&bm_pool->lock, flags); return 0; } for (i = 0; i < buf_num; i++) { err = hwbm_pool_refill(bm_pool, gfp); if (err < 0) break; } /* Update BM driver with number of buffers added to pool */ bm_pool->buf_num += i; pr_debug("hwpm pool: %d of %d buffers added\n", i, buf_num); spin_unlock_irqrestore(&bm_pool->lock, flags); return i; } EXPORT_SYMBOL_GPL(hwbm_pool_add); ux/net-next.git/log/net/sched/sch_codel.c'>
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authorRuslan Ruslichenko <rruslich@cisco.com>2017-01-17 16:13:52 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-01-18 15:37:28 +0100
commit020eb3daaba2857b32c4cf4c82f503d6a00a67de (patch)
tree329a05b424d783db675a4c711bd7633575e8181b /net/sched/sch_codel.c
parent49def1853334396f948dcb4cedb9347abb318df5 (diff)
x86/ioapic: Restore IO-APIC irq_chip retrigger callback
commit d32932d02e18 removed the irq_retrigger callback from the IO-APIC chip and did not add it to the new IO-APIC-IR irq chip. Unfortunately the software resend fallback is not enabled on X86, so edge interrupts which are received during the lazy disabled state of the interrupt line are not retriggered and therefor lost. Restore the callbacks. [ tglx: Massaged changelog ] Fixes: d32932d02e18 ("x86/irq: Convert IOAPIC to use hierarchical irqdomain interfaces") Signed-off-by: Ruslan Ruslichenko <rruslich@cisco.com> Cc: xe-linux-external@cisco.com Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1484662432-13580-1-git-send-email-rruslich@cisco.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'net/sched/sch_codel.c')