lkml.org 
[lkml]   [2021]   [Oct]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] x86/xen: Remove redundant irq_enter/exit() invocations
Subject
Date
All these handlers are regular device interrupt handlers, so they already
went through the proper entry code which handles this correctly.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: x86@kernel.org
Cc: xen-devel@lists.xenproject.org
---
arch/x86/xen/smp.c | 4 ----
arch/x86/xen/smp_pv.c | 2 --
2 files changed, 6 deletions(-)

--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -268,20 +268,16 @@ void xen_send_IPI_allbutself(int vector)

static irqreturn_t xen_call_function_interrupt(int irq, void *dev_id)
{
- irq_enter();
generic_smp_call_function_interrupt();
inc_irq_stat(irq_call_count);
- irq_exit();

return IRQ_HANDLED;
}

static irqreturn_t xen_call_function_single_interrupt(int irq, void *dev_id)
{
- irq_enter();
generic_smp_call_function_single_interrupt();
inc_irq_stat(irq_call_count);
- irq_exit();

return IRQ_HANDLED;
}
--- a/arch/x86/xen/smp_pv.c
+++ b/arch/x86/xen/smp_pv.c
@@ -458,10 +458,8 @@ static void xen_pv_stop_other_cpus(int w

static irqreturn_t xen_irq_work_interrupt(int irq, void *dev_id)
{
- irq_enter();
irq_work_run();
inc_irq_stat(apic_irq_work_irqs);
- irq_exit();

return IRQ_HANDLED;
}
\
 
 \ /
  Last update: 2021-10-12 15:36    [W:0.102 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site