Re: [patch 1/7] allocpercpu: Make it a true per cpu allocator by allocating from a per cpu array

Christoph Lameter a écrit :

+
+enum unit_type { FREE, END, USED };
+
+static u8 cpu_alloc_map[UNITS_PER_CPU] = { 1, };

You mean END here instead of 1 :)

+/*
+ * Allocate an object of a certain size
+ *
+ * Returns a per cpu pointer that must not be directly used.
+ */
+static void *cpu_alloc(unsigned long size)
+{

We might need to give an alignment constraint here. Some per_cpu users would like to get a 64 bytes zone, siting in one cache line and not two :)

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [patch 1/7] allocpercpu: Make it a true per cpu allocator by allocating from a per cpu array
    • From: Christoph Lameter <[email protected]>

• References:
  • [patch 0/7] [RFC] SLUB: Improve allocpercpu to reduce per cpu access overhead
    • From: Christoph Lameter <[email protected]>
  • [patch 1/7] allocpercpu: Make it a true per cpu allocator by allocating from a per cpu array
    • From: Christoph Lameter <[email protected]>

• Prev by Date: Re: "Fix ATAPI transfer lengths" causes CD writing regression
• Next by Date: Re: [patch 3/7] Allocpercpu: Do __percpu_disguise() only if CONFIG_DEBUG_VM is set
• Previous by thread: [patch 1/7] allocpercpu: Make it a true per cpu allocator by allocating from a per cpu array
• Next by thread: Re: [patch 1/7] allocpercpu: Make it a true per cpu allocator by allocating from a per cpu array
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]