Displaying 13 results from an estimated 13 matches for "pv_hash_siz".
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pv_hash_size
2015 Apr 13
1
[PATCH v15 09/15] pvqspinlock: Implement simple paravirt support for the qspinlock
On Thu, Apr 09, 2015 at 05:41:44PM -0400, Waiman Long wrote:
> >>+void __init __pv_init_lock_hash(void)
> >>+{
> >>+ int pv_hash_size = 4 * num_possible_cpus();
> >>+
> >>+ if (pv_hash_size< (1U<< LFSR_MIN_BITS))
> >>+ pv_hash_size = (1U<< LFSR_MIN_BITS);
> >>+ /*
> >>+ * Allocate space from bootmem which should be page-size aligned
> >>+ * and hence cach...
2015 Apr 13
1
[PATCH v15 09/15] pvqspinlock: Implement simple paravirt support for the qspinlock
On Thu, Apr 09, 2015 at 05:41:44PM -0400, Waiman Long wrote:
> >>+void __init __pv_init_lock_hash(void)
> >>+{
> >>+ int pv_hash_size = 4 * num_possible_cpus();
> >>+
> >>+ if (pv_hash_size< (1U<< LFSR_MIN_BITS))
> >>+ pv_hash_size = (1U<< LFSR_MIN_BITS);
> >>+ /*
> >>+ * Allocate space from bootmem which should be page-size aligned
> >>+ * and hence cach...
2015 Apr 09
6
[PATCH v15 09/15] pvqspinlock: Implement simple paravirt support for the qspinlock
...gt;
> +#include <linux/bootmem.h>
> +
> +/*
> + * Allocate memory for the PV qspinlock hash buckets
> + *
> + * This function should be called from the paravirt spinlock initialization
> + * routine.
> + */
> +void __init __pv_init_lock_hash(void)
> +{
> + int pv_hash_size = 4 * num_possible_cpus();
> +
> + if (pv_hash_size < (1U << LFSR_MIN_BITS))
> + pv_hash_size = (1U << LFSR_MIN_BITS);
> + /*
> + * Allocate space from bootmem which should be page-size aligned
> + * and hence cacheline aligned.
> + */
> + pv_lock_hash =...
2015 Apr 09
6
[PATCH v15 09/15] pvqspinlock: Implement simple paravirt support for the qspinlock
...gt;
> +#include <linux/bootmem.h>
> +
> +/*
> + * Allocate memory for the PV qspinlock hash buckets
> + *
> + * This function should be called from the paravirt spinlock initialization
> + * routine.
> + */
> +void __init __pv_init_lock_hash(void)
> +{
> + int pv_hash_size = 4 * num_possible_cpus();
> +
> + if (pv_hash_size < (1U << LFSR_MIN_BITS))
> + pv_hash_size = (1U << LFSR_MIN_BITS);
> + /*
> + * Allocate space from bootmem which should be page-size aligned
> + * and hence cacheline aligned.
> + */
> + pv_lock_hash =...
2015 Apr 09
0
[PATCH v15 09/15] pvqspinlock: Implement simple paravirt support for the qspinlock
...t;
>> +
>> +/*
>> + * Allocate memory for the PV qspinlock hash buckets
>> + *
>> + * This function should be called from the paravirt spinlock initialization
>> + * routine.
>> + */
>> +void __init __pv_init_lock_hash(void)
>> +{
>> + int pv_hash_size = 4 * num_possible_cpus();
>> +
>> + if (pv_hash_size< (1U<< LFSR_MIN_BITS))
>> + pv_hash_size = (1U<< LFSR_MIN_BITS);
>> + /*
>> + * Allocate space from bootmem which should be page-size aligned
>> + * and hence cacheline aligned.
>>...
2015 Apr 07
0
[PATCH v15 09/15] pvqspinlock: Implement simple paravirt support for the qspinlock
...nclude <linux/hash.h>
+#include <linux/lfsr.h>
+#include <linux/bootmem.h>
+
+/*
+ * Allocate memory for the PV qspinlock hash buckets
+ *
+ * This function should be called from the paravirt spinlock initialization
+ * routine.
+ */
+void __init __pv_init_lock_hash(void)
+{
+ int pv_hash_size = 4 * num_possible_cpus();
+
+ if (pv_hash_size < (1U << LFSR_MIN_BITS))
+ pv_hash_size = (1U << LFSR_MIN_BITS);
+ /*
+ * Allocate space from bootmem which should be page-size aligned
+ * and hence cacheline aligned.
+ */
+ pv_lock_hash = alloc_large_system_hash("PV qspinlo...
2015 Apr 24
0
[PATCH v16 08/14] pvqspinlock: Implement simple paravirt support for the qspinlock
...c struct pv_hash_bucket *pv_lock_hash;
+static unsigned int pv_lock_hash_bits __read_mostly;
+
+/*
+ * Allocate memory for the PV qspinlock hash buckets
+ *
+ * This function should be called from the paravirt spinlock initialization
+ * routine.
+ */
+void __init __pv_init_lock_hash(void)
+{
+ int pv_hash_size = 4 * num_possible_cpus() / PV_HE_PER_LINE;
+
+ if (pv_hash_size < PV_HB_MIN)
+ pv_hash_size = PV_HB_MIN;
+ /*
+ * Allocate space from bootmem which should be page-size aligned
+ * and hence cacheline aligned.
+ */
+ pv_lock_hash = alloc_large_system_hash("PV qspinlock",
+...
2015 May 04
1
[PATCH v16 08/14] pvqspinlock: Implement simple paravirt support for the qspinlock
...c struct pv_hash_bucket *pv_lock_hash;
+static unsigned int pv_lock_hash_bits __read_mostly;
+
+/*
+ * Allocate memory for the PV qspinlock hash buckets
+ *
+ * This function should be called from the paravirt spinlock initialization
+ * routine.
+ */
+void __init __pv_init_lock_hash(void)
+{
+ int pv_hash_size = ALIGN(4 * num_possible_cpus(), PV_HE_PER_LINE);
+
+ if (pv_hash_size < PV_HE_MIN)
+ pv_hash_size = PV_HE_MIN;
+
+ /*
+ * Allocate space from bootmem which should be page-size aligned
+ * and hence cacheline aligned.
+ */
+ pv_lock_hash = alloc_large_system_hash("PV qspinlock",
+...
2015 May 04
1
[PATCH v16 08/14] pvqspinlock: Implement simple paravirt support for the qspinlock
...c struct pv_hash_bucket *pv_lock_hash;
+static unsigned int pv_lock_hash_bits __read_mostly;
+
+/*
+ * Allocate memory for the PV qspinlock hash buckets
+ *
+ * This function should be called from the paravirt spinlock initialization
+ * routine.
+ */
+void __init __pv_init_lock_hash(void)
+{
+ int pv_hash_size = ALIGN(4 * num_possible_cpus(), PV_HE_PER_LINE);
+
+ if (pv_hash_size < PV_HE_MIN)
+ pv_hash_size = PV_HE_MIN;
+
+ /*
+ * Allocate space from bootmem which should be page-size aligned
+ * and hence cacheline aligned.
+ */
+ pv_lock_hash = alloc_large_system_hash("PV qspinlock",
+...
2015 Apr 07
18
[PATCH v15 00/15] qspinlock: a 4-byte queue spinlock with PV support
v14->v15:
- Incorporate PeterZ's v15 qspinlock patch and improve upon the PV
qspinlock code by dynamically allocating the hash table as well
as some other performance optimization.
- Simplified the Xen PV qspinlock code as suggested by David Vrabel
<david.vrabel at citrix.com>.
- Add benchmarking data for 3.19 kernel to compare the performance
of a spinlock heavy test
2015 Apr 07
18
[PATCH v15 00/15] qspinlock: a 4-byte queue spinlock with PV support
v14->v15:
- Incorporate PeterZ's v15 qspinlock patch and improve upon the PV
qspinlock code by dynamically allocating the hash table as well
as some other performance optimization.
- Simplified the Xen PV qspinlock code as suggested by David Vrabel
<david.vrabel at citrix.com>.
- Add benchmarking data for 3.19 kernel to compare the performance
of a spinlock heavy test
2015 Apr 24
16
[PATCH v16 00/14] qspinlock: a 4-byte queue spinlock with PV support
v15->v16:
- Remove the lfsr patch and use linear probing as lfsr is not really
necessary in most cases.
- Move the paravirt PV_CALLEE_SAVE_REGS_THUNK code to an asm header.
- Add a patch to collect PV qspinlock statistics which also
supersedes the PV lock hash debug patch.
- Add PV qspinlock performance numbers.
v14->v15:
- Incorporate PeterZ's v15 qspinlock patch and improve
2015 Apr 24
16
[PATCH v16 00/14] qspinlock: a 4-byte queue spinlock with PV support
v15->v16:
- Remove the lfsr patch and use linear probing as lfsr is not really
necessary in most cases.
- Move the paravirt PV_CALLEE_SAVE_REGS_THUNK code to an asm header.
- Add a patch to collect PV qspinlock statistics which also
supersedes the PV lock hash debug patch.
- Add PV qspinlock performance numbers.
v14->v15:
- Incorporate PeterZ's v15 qspinlock patch and improve