| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <160243905212.7002.6551551247016403135.tip-bot2@tip-bot2>
Date: Sun, 11 Oct 2020 17:57:32 -0000
From: "tip-bot2 for Marc Zyngier" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Valentin Schneider <valentin.schneider@....com>,
Catalin Marinas <catalin.marinas@....com>,
Marc Zyngier <maz@...nel.org>, x86 <x86@...nel.org>,
LKML <linux-kernel@...r.kernel.org>
Subject: [tip: irq/core] arm64: Kill __smp_cross_call and co
The following commit has been merged into the irq/core branch of tip:
Commit-ID: 5cebfd2d47c214f69d918e3d34ad183c061eddb2
Gitweb: https://git.kernel.org/tip/5cebfd2d47c214f69d918e3d34ad183c061eddb2
Author: Marc Zyngier <maz@...nel.org>
AuthorDate: Sat, 09 May 2020 14:00:23 +01:00
Committer: Marc Zyngier <maz@...nel.org>
CommitterDate: Thu, 17 Sep 2020 16:37:28 +01:00
arm64: Kill __smp_cross_call and co
The old IPI registration interface is now unused on arm64, so let's
get rid of it.
Reviewed-by: Valentin Schneider <valentin.schneider@....com>
Acked-by: Catalin Marinas <catalin.marinas@....com>
Signed-off-by: Marc Zyngier <maz@...nel.org>
---
arch/arm64/include/asm/irq_work.h | 4 +---
arch/arm64/include/asm/smp.h | 12 +---------
arch/arm64/kernel/smp.c | 38 +++++-------------------------
3 files changed, 8 insertions(+), 46 deletions(-)
diff --git a/arch/arm64/include/asm/irq_work.h b/arch/arm64/include/asm/irq_work.h
index 8a1ef19..a102028 100644
--- a/arch/arm64/include/asm/irq_work.h
+++ b/arch/arm64/include/asm/irq_work.h
@@ -2,11 +2,9 @@
#ifndef __ASM_IRQ_WORK_H
#define __ASM_IRQ_WORK_H
-#include <asm/smp.h>
-
static inline bool arch_irq_work_has_interrupt(void)
{
- return !!__smp_cross_call;
+ return true;
}
#endif /* __ASM_IRQ_WORK_H */
diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h
index 57c5db1..c298ad0 100644
--- a/arch/arm64/include/asm/smp.h
+++ b/arch/arm64/include/asm/smp.h
@@ -61,24 +61,12 @@ struct seq_file;
extern void show_ipi_list(struct seq_file *p, int prec);
/*
- * Called from C code, this handles an IPI.
- */
-extern void handle_IPI(int ipinr, struct pt_regs *regs);
-
-/*
* Discover the set of possible CPUs and determine their
* SMP operations.
*/
extern void smp_init_cpus(void);
/*
- * Provide a function to raise an IPI cross call on CPUs in callmap.
- */
-extern void set_smp_cross_call(void (*)(const struct cpumask *, unsigned int));
-
-extern void (*__smp_cross_call)(const struct cpumask *, unsigned int);
-
-/*
* Register IPI interrupts with the arch SMP code
*/
extern void set_smp_ipi_range(int ipi_base, int nr_ipi);
diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c
index 00c9db1..58fb155 100644
--- a/arch/arm64/kernel/smp.c
+++ b/arch/arm64/kernel/smp.c
@@ -782,13 +782,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus)
}
}
-void (*__smp_cross_call)(const struct cpumask *, unsigned int);
-
-void __init set_smp_cross_call(void (*fn)(const struct cpumask *, unsigned int))
-{
- __smp_cross_call = fn;
-}
-
static const char *ipi_types[NR_IPI] __tracepoint_string = {
#define S(x,s) [x] = s
S(IPI_RESCHEDULE, "Rescheduling interrupts"),
@@ -800,11 +793,7 @@ static const char *ipi_types[NR_IPI] __tracepoint_string = {
S(IPI_WAKEUP, "CPU wake-up interrupts"),
};
-static void smp_cross_call(const struct cpumask *target, unsigned int ipinr)
-{
- trace_ipi_raise(target, ipi_types[ipinr]);
- __smp_cross_call(target, ipinr);
-}
+static void smp_cross_call(const struct cpumask *target, unsigned int ipinr);
void show_ipi_list(struct seq_file *p, int prec)
{
@@ -851,8 +840,7 @@ void arch_send_wakeup_ipi_mask(const struct cpumask *mask)
#ifdef CONFIG_IRQ_WORK
void arch_irq_work_raise(void)
{
- if (__smp_cross_call)
- smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK);
+ smp_cross_call(cpumask_of(smp_processor_id()), IPI_IRQ_WORK);
}
#endif
@@ -959,34 +947,23 @@ static void do_handle_IPI(int ipinr)
trace_ipi_exit_rcuidle(ipi_types[ipinr]);
}
-/* Legacy version, should go away once all irqchips have been converted */
-void handle_IPI(int ipinr, struct pt_regs *regs)
-{
- struct pt_regs *old_regs = set_irq_regs(regs);
-
- irq_enter();
- do_handle_IPI(ipinr);
- irq_exit();
-
- set_irq_regs(old_regs);
-}
-
static irqreturn_t ipi_handler(int irq, void *data)
{
do_handle_IPI(irq - ipi_irq_base);
return IRQ_HANDLED;
}
-static void ipi_send(const struct cpumask *target, unsigned int ipi)
+static void smp_cross_call(const struct cpumask *target, unsigned int ipinr)
{
- __ipi_send_mask(ipi_desc[ipi], target);
+ trace_ipi_raise(target, ipi_types[ipinr]);
+ __ipi_send_mask(ipi_desc[ipinr], target);
}
static void ipi_setup(int cpu)
{
int i;
- if (!ipi_irq_base)
+ if (WARN_ON_ONCE(!ipi_irq_base))
return;
for (i = 0; i < nr_ipi; i++)
@@ -997,7 +974,7 @@ static void ipi_teardown(int cpu)
{
int i;
- if (!ipi_irq_base)
+ if (WARN_ON_ONCE(!ipi_irq_base))
return;
for (i = 0; i < nr_ipi; i++)
@@ -1023,7 +1000,6 @@ void __init set_smp_ipi_range(int ipi_base, int n)
}
ipi_irq_base = ipi_base;
- __smp_cross_call = ipi_send;
/* Setup the boot CPU immediately */
ipi_setup(smp_processor_id());
Powered by blists - more mailing lists