Re: [patch] sti() preemption fix, 2.5.22

From: Ingo Molnar (mingo@elte.hu)
Date: Mon Jun 17 2002 - 11:15:22 EST


Zoltan Szalontai noticed that my patch doesnt match the bugfix described
:-)

correct patch attached.

        Ingo

# This is a BitKeeper generated patch for the following project:
# Project Name: Linux kernel tree
# This patch format is intended for GNU patch command version 2.5 or higher.
# This patch includes the following deltas:
# ChangeSet 1.510 -> 1.511
# arch/i386/kernel/irq.c 1.10 -> 1.11
#
# The following is the BitKeeper ChangeSet Log
# --------------------------------------------
# 02/06/17 mingo@elte.hu 1.511
# - sti() preemption fix. for real.
# --------------------------------------------
#
diff -Nru a/arch/i386/kernel/irq.c b/arch/i386/kernel/irq.c
--- a/arch/i386/kernel/irq.c Mon Jun 17 18:15:00 2002
+++ b/arch/i386/kernel/irq.c Mon Jun 17 18:15:00 2002
@@ -366,11 +366,15 @@
 
 void __global_sti(void)
 {
- int cpu = smp_processor_id();
+ int cpu;
+
+ preempt_disable();
+ cpu = smp_processor_id();
 
         if (!local_irq_count(cpu))
                 release_irqlock(cpu);
         __sti();
+ preempt_enable();
 }
 
 /*

-
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This archive was generated by hypermail 2b29 : Sun Jun 23 2002 - 22:00:13 EST