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Subject[patch 1/4] net: Percpufy frequently used variables -- add percpu_counter_mod_bh
Add percpu_counter_mod_bh for using these counters safely from
both softirq and process context.

Signed-off by: Pravin B. Shelar <pravins@calsoftinc.com>
Signed-off by: Ravikiran G Thirumalai <kiran@scalex86.org>
Signed-off by: Shai Fultheim <shai@scalex86.org>

Index: linux-2.6.16-rc1/include/linux/percpu_counter.h
===================================================================
--- linux-2.6.16-rc1.orig/include/linux/percpu_counter.h 2006-01-25 11:53:56.000000000 -0800
+++ linux-2.6.16-rc1/include/linux/percpu_counter.h 2006-01-25 12:09:41.000000000 -0800
@@ -11,6 +11,7 @@
#include <linux/smp.h>
#include <linux/threads.h>
#include <linux/percpu.h>
+#include <linux/interrupt.h>

#ifdef CONFIG_SMP

@@ -102,4 +103,11 @@ static inline void percpu_counter_dec(st
percpu_counter_mod(fbc, -1);
}

+static inline void percpu_counter_mod_bh(struct percpu_counter *fbc, long amount)
+{
+ local_bh_disable();
+ percpu_counter_mod(fbc, amount);
+ local_bh_enable();
+}
+
#endif /* _LINUX_PERCPU_COUNTER_H */
-
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