[coreboot-gerrit] Patch set updated for coreboot: 6b6612d arm64: provide run on all cpu but self semantics
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Fri Mar 27 12:44:31 CET 2015
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/9082
-gerrit
commit 6b6612dc350cb27964cfa3668c2c84cfec7c4490
Author: Aaron Durbin <adurbin at chromium.org>
Date: Wed Sep 17 12:00:57 2014 -0500
arm64: provide run on all cpu but self semantics
In order to provide richer semantics for running code
on all CPUs add an all-but-self construct.
BUG=chrome-os-partner:32082
BRANCH=None
TEST=Built and booted to kernel.
Change-Id: If8dd28ff7f34d93592ab2025a65a2fd665e4e608
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
Original-Commit-Id: 9a4622f63a065f620f0c92ef92eeb2aa5c2b441d
Original-Change-Id: Id18dc0423bcb0016ed36ace659b3f858e824c46c
Original-Signed-off-by: Aaron Durbin <adurbin at chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/218652
Original-Reviewed-by: Furquan Shaikh <furquan at chromium.org>
---
src/arch/arm64/cpu.c | 25 +++++++++++++++++++++++++
src/arch/arm64/include/armv8/arch/cpu.h | 2 ++
2 files changed, 27 insertions(+)
diff --git a/src/arch/arm64/cpu.c b/src/arch/arm64/cpu.c
index 396c5b7..c0dc3c3 100644
--- a/src/arch/arm64/cpu.c
+++ b/src/arch/arm64/cpu.c
@@ -297,6 +297,21 @@ static int __arch_run_on_all_cpus(struct cpu_action *action, int sync)
return 0;
}
+static int __arch_run_on_all_cpus_but_self(struct cpu_action *action, int sync)
+{
+ int i;
+ struct cpu_info *me = cpu_info();
+
+ for (i = 0; i < CONFIG_MAX_CPUS; i++) {
+ struct cpu_info *ci = cpu_info_for_cpu(i);
+ if (ci == me)
+ continue;
+ action_run_on_cpu(ci, action, sync);
+ }
+
+ return 0;
+}
+
int arch_run_on_all_cpus(struct cpu_action *action)
{
return __arch_run_on_all_cpus(action, 1);
@@ -307,6 +322,16 @@ int arch_run_on_all_cpus_async(struct cpu_action *action)
return __arch_run_on_all_cpus(action, 0);
}
+int arch_run_on_all_cpus_but_self(struct cpu_action *action)
+{
+ return __arch_run_on_all_cpus_but_self(action, 1);
+}
+
+int arch_run_on_all_cpus_but_self_async(struct cpu_action *action)
+{
+ return __arch_run_on_all_cpus_but_self(action, 0);
+}
+
void arch_secondary_cpu_init(void)
{
struct cpu_info *ci = cpu_info();
diff --git a/src/arch/arm64/include/armv8/arch/cpu.h b/src/arch/arm64/include/armv8/arch/cpu.h
index a5d20c4..d262385 100644
--- a/src/arch/arm64/include/armv8/arch/cpu.h
+++ b/src/arch/arm64/include/armv8/arch/cpu.h
@@ -94,8 +94,10 @@ void arch_initialize_cpus(device_t cluster, struct cpu_control_ops *cntrl_ops);
*/
int arch_run_on_cpu(unsigned int cpu, struct cpu_action *action);
int arch_run_on_all_cpus(struct cpu_action *action);
+int arch_run_on_all_cpus_but_self(struct cpu_action *action);
int arch_run_on_cpu_async(unsigned int cpu, struct cpu_action *action);
int arch_run_on_all_cpus_async(struct cpu_action *action);
+int arch_run_on_all_cpus_but_self_async(struct cpu_action *action);
#endif /* !__PRE_RAM__ */
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