From: Thomas Gleixner <tglx@linutronix.de>
To: LKML <linux-kernel@vger.kernel.org>
Cc: x86@kernel.org, Nadav Amit <namit@vmware.com>,
Ricardo Neri <ricardo.neri-calderon@linux.intel.com>,
Stephane Eranian <eranian@google.com>,
Feng Tang <feng.tang@intel.com>
Subject: [patch V2 25/25] x86/apic/x2apic: Implement IPI shorthands support
Date: Thu, 04 Jul 2019 17:52:10 +0200 [thread overview]
Message-ID: <20190704155610.718298800@linutronix.de> (raw)
In-Reply-To: 20190704155145.617706117@linutronix.de
All callers of apic->send_IPI_all() and apic->send_IPI_allbutself() contain
the decision logic for shorthand invocation already and invoke
send_IPI_mask() if the prereqisites are not satisfied.
Implement shorthand support for x2apic.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
V2: Remove the decision logic now that it is already done in the callers
---
arch/x86/kernel/apic/local.h | 1 +
arch/x86/kernel/apic/x2apic_cluster.c | 4 ++--
arch/x86/kernel/apic/x2apic_phys.c | 12 ++++++++++--
3 files changed, 13 insertions(+), 4 deletions(-)
--- a/arch/x86/kernel/apic/local.h
+++ b/arch/x86/kernel/apic/local.h
@@ -23,6 +23,7 @@ unsigned int x2apic_get_apic_id(unsigned
u32 x2apic_set_apic_id(unsigned int id);
int x2apic_phys_pkg_id(int initial_apicid, int index_msb);
void x2apic_send_IPI_self(int vector);
+void __x2apic_send_IPI_shorthand(int vector, u32 which);
/* IPI */
--- a/arch/x86/kernel/apic/x2apic_cluster.c
+++ b/arch/x86/kernel/apic/x2apic_cluster.c
@@ -82,12 +82,12 @@ x2apic_send_IPI_mask_allbutself(const st
static void x2apic_send_IPI_allbutself(int vector)
{
- __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLBUT);
+ __x2apic_send_IPI_shorthand(vector, APIC_DEST_ALLBUT);
}
static void x2apic_send_IPI_all(int vector)
{
- __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLINC);
+ __x2apic_send_IPI_shorthand(vector, APIC_DEST_ALLINC);
}
static u32 x2apic_calc_apicid(unsigned int cpu)
--- a/arch/x86/kernel/apic/x2apic_phys.c
+++ b/arch/x86/kernel/apic/x2apic_phys.c
@@ -75,12 +75,12 @@ static void
static void x2apic_send_IPI_allbutself(int vector)
{
- __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLBUT);
+ __x2apic_send_IPI_shorthand(vector, APIC_DEST_ALLBUT);
}
static void x2apic_send_IPI_all(int vector)
{
- __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLINC);
+ __x2apic_send_IPI_shorthand(vector, APIC_DEST_ALLINC);
}
static void init_x2apic_ldr(void)
@@ -112,6 +112,14 @@ void __x2apic_send_IPI_dest(unsigned int
native_x2apic_icr_write(cfg, apicid);
}
+void __x2apic_send_IPI_shorthand(int vector, u32 which)
+{
+ unsigned long cfg = __prepare_ICR(which, vector, 0);
+
+ x2apic_wrmsr_fence();
+ native_x2apic_icr_write(cfg, 0);
+}
+
unsigned int x2apic_get_apic_id(unsigned long id)
{
return id;
prev parent reply other threads:[~2019-07-04 16:34 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-04 15:51 [patch V2 00/25] x86/apic: Support for IPI shorthands Thomas Gleixner
2019-07-04 15:51 ` [patch V2 01/25] x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI Thomas Gleixner
2019-07-05 21:43 ` Thomas Gleixner
2019-07-04 15:51 ` [patch V2 02/25] x86/apic: Invoke perf_events_lapic_init() after enabling APIC Thomas Gleixner
2019-07-04 15:51 ` [patch V2 03/25] x86/apic: Soft disable APIC before initializing it Thomas Gleixner
2019-07-04 15:51 ` [patch V2 04/25] x86/apic: Make apic_pending_intr_clear() more robust Thomas Gleixner
2019-07-05 15:47 ` Andrew Cooper
2019-07-05 19:06 ` Andy Lutomirski
2019-07-05 20:17 ` Andrew Cooper
2019-07-05 20:36 ` Thomas Gleixner
2019-07-05 20:39 ` Andy Lutomirski
2019-07-07 8:27 ` Thomas Gleixner
2019-07-05 19:19 ` Nadav Amit
2019-07-05 20:47 ` Andrew Cooper
2019-07-05 20:25 ` Thomas Gleixner
2019-07-05 20:37 ` Andy Lutomirski
2019-07-05 20:49 ` Paolo Bonzini
2019-07-05 21:16 ` Andrew Cooper
2019-07-07 8:37 ` Thomas Gleixner
2019-07-09 14:43 ` Thomas Gleixner
2019-07-04 15:51 ` [patch V2 05/25] x86/apic: Move IPI inlines into ipi.c Thomas Gleixner
2019-07-04 15:51 ` [patch V2 06/25] x86/apic: Cleanup the include maze Thomas Gleixner
2019-07-04 15:51 ` [patch V2 07/25] x86/apic: Move ipi header into apic directory Thomas Gleixner
2019-07-04 15:51 ` [patch V2 08/25] x86/apic: Move apic_flat_64 " Thomas Gleixner
2019-07-04 15:51 ` [patch V2 09/25] x86/apic: Consolidate the apic local headers Thomas Gleixner
2019-07-04 15:51 ` [patch V2 10/25] x86/apic/uv: Make x2apic_extra_bits static Thomas Gleixner
2019-07-04 15:51 ` [patch V2 11/25] smp/hotplug: Track booted once CPUs in a cpumask Thomas Gleixner
2019-07-04 15:51 ` [patch V2 12/25] x86/cpu: Move arch_smt_update() to a neutral place Thomas Gleixner
2019-07-04 15:51 ` [patch V2 13/25] x86/hotplug: Silence APIC and NMI when CPU is dead Thomas Gleixner
2019-07-04 15:51 ` [patch V2 14/25] x86/apic: Remove dest argument from __default_send_IPI_shortcut() Thomas Gleixner
2019-07-04 15:52 ` [patch V2 15/25] x86/apic: Add NMI_VECTOR wait to IPI shorthand Thomas Gleixner
2019-07-04 15:52 ` [patch V2 16/25] x86/apic: Move no_ipi_broadcast() out of 32bit Thomas Gleixner
2019-07-04 15:52 ` [patch V2 17/25] x86/apic: Add static key to Control IPI shorthands Thomas Gleixner
2019-07-04 15:52 ` [patch V2 18/25] x86/apic: Provide and use helper for send_IPI_allbutself() Thomas Gleixner
2019-07-04 15:52 ` [patch V2 19/25] cpumask: Implement cpumask_or_equal() Thomas Gleixner
2019-07-04 15:52 ` [patch V2 20/25] x86/smp: Move smp_function_call implementations into IPI code Thomas Gleixner
2019-07-04 15:52 ` [patch V2 21/25] x86/smp: Enhance native_send_call_func_ipi() Thomas Gleixner
2019-07-05 1:26 ` Nadav Amit
2019-07-04 15:52 ` [patch V2 22/25] x86/apic: Remove the shorthand decision logic Thomas Gleixner
2019-07-04 15:52 ` [patch V2 23/25] x86/apic: Share common IPI helpers Thomas Gleixner
2019-07-04 15:52 ` [patch V2 24/25] x86/apic/flat64: Remove the IPI shorthand decision logic Thomas Gleixner
2019-07-04 15:52 ` Thomas Gleixner [this message]
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