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From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Josh Poimboeuf <jpoimboe@redhat.com>,
	Kees Cook <keescook@chromium.org>
Subject: [patch 11/12] softirq: Allow inlining do_softirq_own_stack()
Date: Thu, 04 Feb 2021 21:49:14 +0100	[thread overview]
Message-ID: <20210204211155.214169844@linutronix.de> (raw)
In-Reply-To: 20210204204903.350275743@linutronix.de

The function to switch to the irq stack on x86 is now minimal and there is
only a single caller. Allow the stack switch to be inlined.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 include/linux/interrupt.h |    2 ++
 kernel/softirq.c          |    4 ++++
 2 files changed, 6 insertions(+)

--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -570,7 +570,9 @@ asmlinkage void do_softirq(void);
 asmlinkage void __do_softirq(void);
 
 #ifdef __ARCH_HAS_DO_SOFTIRQ
+# ifndef __ARCH_HAS_DO_SOFTIRQ_INLINE
 void do_softirq_own_stack(void);
+# endif
 #else
 static inline void do_softirq_own_stack(void)
 {
--- a/kernel/softirq.c
+++ b/kernel/softirq.c
@@ -26,6 +26,10 @@
 #include <linux/tick.h>
 #include <linux/irq.h>
 
+#ifdef __ARCH_HAS_DO_SOFTIRQ_INLINE
+# include <asm/irq_stack.h>
+#endif
+
 #define CREATE_TRACE_POINTS
 #include <trace/events/irq.h>
 


  parent reply	other threads:[~2021-02-05  1:04 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-04 20:49 [patch 00/12] x86/irq/64: Inline irq stack switching Thomas Gleixner
2021-02-04 20:49 ` [patch 01/12] x86/entry: Fix instrumentation annotation Thomas Gleixner
2021-02-05 12:02   ` Borislav Petkov
2021-02-04 20:49 ` [patch 02/12] x86/irq: Sanitize irq stack tracking Thomas Gleixner
2021-02-04 20:49 ` [patch 03/12] x86/irq/64: Adjust the per CPU irq stack pointer by 8 Thomas Gleixner
2021-02-05 13:53   ` Peter Zijlstra
2021-02-05 15:00     ` Thomas Gleixner
2021-02-04 20:49 ` [patch 04/12] x86/apic: Split out spurious handling code Thomas Gleixner
2021-02-04 20:49 ` [patch 05/12] x86/irq: Provide macro for inlining irq stack switching Thomas Gleixner
2021-02-08 15:06   ` Borislav Petkov
2021-02-08 20:42   ` Josh Poimboeuf
2021-02-09 15:12     ` Thomas Gleixner
2021-02-09 16:22       ` Josh Poimboeuf
2021-02-09 18:14         ` Thomas Gleixner
2021-02-04 20:49 ` [patch 06/12] x86/entry: Convert system vectors to irq stack macro Thomas Gleixner
2021-02-05  3:52   ` kernel test robot
2021-02-05 14:13     ` Peter Zijlstra
2021-02-07  8:15       ` [kbuild-all] " Rong Chen
2021-02-08 14:19         ` Borislav Petkov
2021-02-09  8:57           ` Rong Chen
2021-02-09 10:46             ` Borislav Petkov
2021-02-04 20:49 ` [patch 07/12] x86/entry: Convert device interrupts to inline stack switching Thomas Gleixner
2021-02-04 20:49 ` [patch 08/12] x86/entry: Use run_sysvec_on_irqstack_cond() for XEN upcall Thomas Gleixner
2021-02-05  7:28   ` kernel test robot
2021-02-04 20:49 ` [patch 09/12] x86/softirq: Remove indirection in do_softirq_own_stack() Thomas Gleixner
2021-02-04 20:49 ` [patch 10/12] x86: Select CONFIG_HAVE_IRQ_EXIT_ON_IRQ_STACK Thomas Gleixner
2021-02-04 20:49 ` Thomas Gleixner [this message]
2021-02-05 10:14   ` [patch 11/12] softirq: Allow inlining do_softirq_own_stack() Lai Jiangshan
2021-02-05 11:38     ` Thomas Gleixner
2021-02-09 20:43       ` Thomas Gleixner
2021-02-04 20:49 ` [patch 12/12] x86/softirq/64: Inline do_softirq_own_stack() Thomas Gleixner
2021-02-08 21:47 ` [patch 00/12] x86/irq/64: Inline irq stack switching Kees Cook

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