user/sven/linux.git/include/linux/skb_array.h, branch v6.10.6

mm: change inlined allocation helpers to account at the call site

2024-04-26T03:55:59Z

Main goal of memory allocation profiling patchset is to provide accounting that is cheap enough to run in production. To achieve that we inject counters using codetags at the allocation call sites to account every time allocation is made. This injection allows us to perform accounting efficiently because injected counters are immediately available as opposed to the alternative methods, such as using _RET_IP_, which would require counter lookup and appropriate locking that makes accounting much more expensive. This method requires all allocation functions to inject separate counters at their call sites so that their callers can be individually accounted. Counter injection is implemented by allocation hooks which should wrap all allocation functions. Inlined functions which perform allocations but do not use allocation hooks are directly charged for the allocations they perform. In most cases these functions are just specialized allocation wrappers used from multiple places to allocate objects of a specific type. It would be more useful to do the accounting at their call sites instead. Instrument these helpers to do accounting at the call site. Simple inlined allocation wrappers are converted directly into macros. More complex allocators or allocators with documentation are converted into _noprof versions and allocation hooks are added. This allows memory allocation profiling mechanism to charge allocations to the callers of these functions. Link: https://lkml.kernel.org/r/20240415020731.1152108-1-surenb@google.com Signed-off-by: Suren Baghdasaryan Acked-by: Jan Kara [jbd2] Cc: Anna Schumaker Cc: Arnd Bergmann Cc: Benjamin Tissoires Cc: Christoph Lameter Cc: David Rientjes Cc: David S. Miller Cc: Dennis Zhou Cc: Eric Dumazet Cc: Herbert Xu Cc: Jakub Kicinski Cc: Jakub Sitnicki Cc: Jiri Kosina Cc: Joerg Roedel Cc: Joonsoo Kim Cc: Kent Overstreet Cc: Matthew Wilcox (Oracle) Cc: Paolo Abeni Cc: Pekka Enberg Cc: Tejun Heo Cc: Theodore Ts'o Cc: Trond Myklebust Cc: Vlastimil Babka Cc: Will Deacon Signed-off-by: Andrew Morton

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32Z

Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman

pfifo_fast: drop unneeded additional lock on dequeue

2018-05-17T16:46:54Z

After the previous patch, for NOLOCK qdiscs, q->seqlock is always held when the dequeue() is invoked, we can drop any additional locking to protect such operation. Signed-off-by: Paolo Abeni Signed-off-by: David S. Miller

skb_array: use __ptr_ring_empty

2018-01-29T17:02:54Z

__skb_array_empty should use __ptr_ring_empty since that's the only legal lockless function. Signed-off-by: Michael S. Tsirkin Signed-off-by: David S. Miller

net: skb_array: expose peek API

2017-12-08T18:32:26Z

This adds a peek routine to skb_array.h for use with qdisc. Signed-off-by: John Fastabend Signed-off-by: David S. Miller

ptr_ring: use kmalloc_array()

2017-08-16T23:28:47Z

As found by syzkaller, malicious users can set whatever tx_queue_len on a tun device and eventually crash the kernel. Lets remove the ALIGN(XXX, SMP_CACHE_BYTES) thing since a small ring buffer is not fast anyway. Fixes: 2e0ab8ca83c1 ("ptr_ring: array based FIFO for pointers") Signed-off-by: Eric Dumazet Reported-by: Dmitry Vyukov Cc: Michael S. Tsirkin Cc: Jason Wang Signed-off-by: David S. Miller

skb_array: introduce batch dequeuing

2017-05-18T14:07:40Z

Signed-off-by: Jason Wang Signed-off-by: David S. Miller

skb_array: introduce skb_array_unconsume

2017-05-18T14:07:39Z

Signed-off-by: Jason Wang Signed-off-by: David S. Miller

skb_array: add wrappers for resizing

2016-07-01T09:32:17Z

Signed-off-by: Michael S. Tsirkin Signed-off-by: Jason Wang Signed-off-by: David S. Miller

skb_array: minor tweak

2016-07-01T09:32:16Z

Signed-off-by: Michael S. Tsirkin Signed-off-by: Jason Wang Signed-off-by: David S. Miller