This is a note to let you know that I've just added the patch titled
parisc: tlb flush counting fix for SMP and UP
to the 3.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
parisc-tlb-flush-counting-fix-for-smp-and-up.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0fc537d1d655cdae69b489dbba46ad617cfc1373 Mon Sep 17 00:00:00 2001
From: Helge Deller <deller@xxxxxx>
Date: Tue, 7 May 2013 21:42:47 +0000
Subject: parisc: tlb flush counting fix for SMP and UP
From: Helge Deller <deller@xxxxxx>
commit 0fc537d1d655cdae69b489dbba46ad617cfc1373 upstream.
Fix up build error on UP and show correctly number of function call
(ipi) irqs.
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/parisc/include/asm/hardirq.h | 6 +-----
arch/parisc/include/asm/tlbflush.h | 2 ++
arch/parisc/kernel/irq.c | 5 ++---
arch/parisc/kernel/smp.c | 11 -----------
4 files changed, 5 insertions(+), 19 deletions(-)
--- a/arch/parisc/include/asm/hardirq.h
+++ b/arch/parisc/include/asm/hardirq.h
@@ -19,12 +19,8 @@ typedef struct {
#ifdef CONFIG_SMP
unsigned int irq_resched_count;
unsigned int irq_call_count;
- /*
- * irq_tlb_count is double-counted in irq_call_count, so it must be
- * subtracted from irq_call_count when displaying irq_call_count
- */
- unsigned int irq_tlb_count;
#endif
+ unsigned int irq_tlb_count;
} ____cacheline_aligned irq_cpustat_t;
DECLARE_PER_CPU_SHARED_ALIGNED(irq_cpustat_t, irq_stat);
--- a/arch/parisc/include/asm/tlbflush.h
+++ b/arch/parisc/include/asm/tlbflush.h
@@ -22,6 +22,8 @@ extern spinlock_t pa_tlb_lock;
extern void flush_tlb_all(void);
extern void flush_tlb_all_local(void *);
+#define smp_flush_tlb_all() flush_tlb_all()
+
/*
* flush_tlb_mm()
*
--- a/arch/parisc/kernel/irq.c
+++ b/arch/parisc/kernel/irq.c
@@ -175,14 +175,13 @@ int arch_show_interrupts(struct seq_file
seq_printf(p, " Rescheduling interrupts\n");
seq_printf(p, "%*s: ", prec, "CAL");
for_each_online_cpu(j)
- seq_printf(p, "%10u ", irq_stats(j)->irq_call_count -
- irq_stats(j)->irq_tlb_count);
+ seq_printf(p, "%10u ", irq_stats(j)->irq_call_count);
seq_printf(p, " Function call interrupts\n");
+#endif
seq_printf(p, "%*s: ", prec, "TLB");
for_each_online_cpu(j)
seq_printf(p, "%10u ", irq_stats(j)->irq_tlb_count);
seq_printf(p, " TLB shootdowns\n");
-#endif
return 0;
}
--- a/arch/parisc/kernel/smp.c
+++ b/arch/parisc/kernel/smp.c
@@ -264,17 +264,6 @@ void arch_send_call_function_single_ipi(
}
/*
- * Flush all other CPU's tlb and then mine. Do this with on_each_cpu()
- * as we want to ensure all TLB's flushed before proceeding.
- */
-
-void
-smp_flush_tlb_all(void)
-{
- on_each_cpu(flush_tlb_all_local, NULL, 1);
-}
-
-/*
* Called by secondaries to update state and initialize CPU registers.
*/
static void __init
Patches currently in stable-queue which might be from deller@xxxxxx are
queue-3.9/parisc-tlb-flush-counting-fix-for-smp-and-up.patch
queue-3.9/parisc-show-number-of-fpe-and-unaligned-access-handler-calls-in-proc-interrupts.patch
queue-3.9/parisc-parport0-fix-this-legacy-no-device-port-driver.patch
queue-3.9/parisc-fix-kernel-bug-at-arch-parisc-include-asm-mmzone.h-50.patch
queue-3.9/parisc-kernel-using-strlcpy-instead-of-strcpy.patch
queue-3.9/parisc-implement-irq-stacks.patch
queue-3.9/parisc-provide-pci_mmap_page_range-for-parisc.patch
queue-3.9/parisc-more-irq-statistics-in-proc-interrupts.patch
queue-3.9/parisc-fix-serial-ports-on-c8000-workstation.patch
queue-3.9/parisc-remove-the-second-argument-of-kmap_atomic.patch
queue-3.9/parisc-add-kernel-stack-overflow-check.patch
queue-3.9/parisc-memory-overflow-name-length-is-too-short-for-using.patch
queue-3.9/parisc-implement-irq-stacks-part-2-v2.patch
queue-3.9/parisc-fix-irq-stack-on-up-and-smp.patch
queue-3.9/parisc-rename-config_pa7100-to-config_pa7000.patch
queue-3.9/parisc-make-interrupt-and-interruption-stack-allocation-reentrant.patch
queue-3.9/parisc-fix-kernel-bug-at-arch-parisc-include-asm-mmzone.h-50-part-2.patch
queue-3.9/parisc-add-rp5470-entry-to-machine-database.patch
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