lkml.org 
[lkml]   [2008]   [Oct]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[PATCH 22/35] cpumask: cpumask_first/cpumask_next
Pointer-taking variants of first_cpu/next_cpu.

From: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Mike Travis <travis@sgi.com>
---
include/linux/cpumask.h | 18 +++++++++---------
lib/cpumask.c | 10 +++++-----
2 files changed, 14 insertions(+), 14 deletions(-)
--- test-compile.orig/include/linux/cpumask.h
+++ test-compile/include/linux/cpumask.h
@@ -46,8 +46,8 @@
* void cpumask_shift_right(dst, src, n) Shift right
* void cpumask_shift_left(dst, src, n) Shift left
*
- * int first_cpu(mask) Number lowest set bit or nr_cpumask_bits
- * int next_cpu(cpu, mask) Next cpu past 'cpu', or nr_cpumask_bits
+ * int cpumask_first(mask) Number lowest set bit or nr_cpumask_bits
+ * int cpumask_next(cpu, mask) Next cpu past 'cpu', or nr_cpumask_bits
*
* void cpumask_copy(dmask, smask) dmask = smask
*
@@ -200,6 +200,8 @@ extern cpumask_t _unused_cpumask_arg_;
#define for_each_cpu_mask(cpu, mask) for_each_cpu(cpu, &(mask))
#define for_each_cpu_mask_and(cpu, mask, and) \
for_each_cpu_and(cpu, &(mask), &(and))
+#define first_cpu(src) cpumask_first(&(src))
+#define next_cpu(n, src) cpumask_next((n), &(src))
/* End deprecated region. */

static inline void cpumask_set_cpu(int cpu, volatile struct cpumask *dstp)
@@ -448,8 +450,8 @@ extern cpumask_t cpu_mask_all;

#if NR_CPUS == 1

-#define first_cpu(src) ({ (void)(src); 0; })
-#define next_cpu(n, src) ({ (void)(src); 1; })
+#define cpumask_first(src) ({ (void)(src); 0; })
+#define cpumask_next(n, src) ({ (void)(src); 1; })
#define cpumask_next_and(n, srcp, andp) ({ (void)(srcp), (void)(andp); 1; })
#define any_online_cpu(mask) 0

@@ -460,18 +462,16 @@ extern cpumask_t cpu_mask_all;

#else /* NR_CPUS > 1 */

-int __first_cpu(const cpumask_t *srcp);
-int __next_cpu(int n, const cpumask_t *srcp);
+int cpumask_first(const cpumask_t *srcp);
+int cpumask_next(int n, const cpumask_t *srcp);
int cpumask_next_and(int n, const cpumask_t *srcp, const cpumask_t *andp);
int __any_online_cpu(const cpumask_t *mask);

-#define first_cpu(src) __first_cpu(&(src))
-#define next_cpu(n, src) __next_cpu((n), &(src))
#define any_online_cpu(mask) __any_online_cpu(&(mask))

#define for_each_cpu(cpu, mask) \
for ((cpu) = -1; \
- (cpu) = __next_cpu((cpu), (mask)), \
+ (cpu) = cpumask_next((cpu), (mask)), \
(cpu) < nr_cpumask_bits;)
#define for_each_cpu_and(cpu, mask, and) \
for ((cpu) = -1; \
--- test-compile.orig/lib/cpumask.c
+++ test-compile/lib/cpumask.c
@@ -3,21 +3,21 @@
#include <linux/cpumask.h>
#include <linux/module.h>

-int __first_cpu(const cpumask_t *srcp)
+int cpumask_first(const cpumask_t *srcp)
{
return find_first_bit(cpumask_bits(srcp), nr_cpumask_bits);
}
-EXPORT_SYMBOL(__first_cpu);
+EXPORT_SYMBOL(cpumask_first);

-int __next_cpu(int n, const cpumask_t *srcp)
+int cpumask_next(int n, const cpumask_t *srcp)
{
return find_next_bit(cpumask_bits(srcp), nr_cpumask_bits, n+1);
}
-EXPORT_SYMBOL(__next_cpu);
+EXPORT_SYMBOL(cpumask_next);

int cpumask_next_and(int n, const cpumask_t *srcp, const cpumask_t *andp)
{
- while ((n = next_cpu(n, *srcp)) < nr_cpumask_bits)
+ while ((n = cpumask_next(n, srcp)) < nr_cpu_ids)
if (cpumask_test_cpu(n, andp))
break;
return n;
--


\
 
 \ /
  Last update: 2008-10-20 19:19    [from the cache]
©2003-2011 Jasper Spaans