Re: [PATCH] - Incorrect cpumask definition in net/core/flow.c

From: Herbert Xu
Date: Fri Nov 07 2003 - 21:59:38 EST


Jack Steiner <steiner@xxxxxxx> wrote:
> This fixes a problem in net/core/flow.c.
>
> The field "cpumap" is defined as a "unsigned long". It
> should be a "cpumask_t".

Thanks. Here is a patch that changes the operations on the maps as well
for consistency.
--
Debian GNU/Linux 3.0 is out! ( http://www.debian.org/ )
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
Index: kernel-source-2.5/net/core/flow.c
===================================================================
RCS file: /home/gondolin/herbert/src/CVS/debian/kernel-source-2.5/net/core/flow.c,v
retrieving revision 1.8
diff -u -r1.8 flow.c
--- kernel-source-2.5/net/core/flow.c 11 Oct 2003 06:29:28 -0000 1.8
+++ kernel-source-2.5/net/core/flow.c 8 Nov 2003 02:54:01 -0000
@@ -19,6 +19,7 @@
#include <linux/bitops.h>
#include <linux/notifier.h>
#include <linux/cpu.h>
+#include <linux/cpumask.h>
#include <net/flow.h>
#include <asm/atomic.h>
#include <asm/semaphore.h>
@@ -65,7 +66,7 @@

struct flow_flush_info {
atomic_t cpuleft;
- unsigned long cpumap;
+ cpumask_t cpumap;
struct completion completion;
};
static DEFINE_PER_CPU(struct tasklet_struct, flow_flush_tasklets) = { NULL };
@@ -73,7 +74,7 @@
#define flow_flush_tasklet(cpu) (&per_cpu(flow_flush_tasklets, cpu))

static DECLARE_MUTEX(flow_cache_cpu_sem);
-static unsigned long flow_cache_cpu_map;
+static cpumask_t flow_cache_cpu_map;
static unsigned int flow_cache_cpu_count;

static void flow_cache_new_hashrnd(unsigned long arg)
@@ -81,7 +82,7 @@
int i;

for (i = 0; i < NR_CPUS; i++)
- if (test_bit(i, &flow_cache_cpu_map))
+ if (cpu_isset(i, flow_cache_cpu_map))
flow_hash_rnd_recalc(i) = 1;

flow_hash_rnd_timer.expires = jiffies + FLOW_HASH_RND_PERIOD;
@@ -178,7 +179,7 @@
cpu = smp_processor_id();

fle = NULL;
- if (!test_bit(cpu, &flow_cache_cpu_map))
+ if (!cpu_isset(cpu, flow_cache_cpu_map))
goto nocache;

if (flow_hash_rnd_recalc(cpu))
@@ -277,7 +278,7 @@
struct tasklet_struct *tasklet;

cpu = smp_processor_id();
- if (!test_bit(cpu, &info->cpumap))
+ if (!cpu_isset(cpu, info->cpumap))
return;

tasklet = flow_flush_tasklet(cpu);
@@ -301,7 +302,7 @@

local_bh_disable();
smp_call_function(flow_cache_flush_per_cpu, &info, 1, 0);
- if (test_bit(smp_processor_id(), &info.cpumap))
+ if (cpu_isset(smp_processor_id(), info.cpumap))
flow_cache_flush_tasklet((unsigned long)&info);
local_bh_enable();

@@ -341,7 +342,7 @@
static int __devinit flow_cache_cpu_online(int cpu)
{
down(&flow_cache_cpu_sem);
- set_bit(cpu, &flow_cache_cpu_map);
+ cpu_set(cpu, flow_cache_cpu_map);
flow_cache_cpu_count++;
up(&flow_cache_cpu_sem);

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