diff options
| author | Aaron Durbin <adurbin@chromium.org> | 2014-09-17 12:00:57 -0500 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2015-03-28 07:05:11 +0100 |
| commit | cf5b627725bbbe9da5156f334ca00859a6ebde94 (patch) | |
| tree | 8de70b6735e08417209861f152d13c58fbb1f4fe | |
| parent | ae879bbecb81812fe65388d1b17447b6a9a982f0 (diff) | |
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@chromium.org>
Original-Commit-Id: 9a4622f63a065f620f0c92ef92eeb2aa5c2b441d
Original-Change-Id: Id18dc0423bcb0016ed36ace659b3f858e824c46c
Original-Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Original-Reviewed-on: https://chromium-review.googlesource.com/218652
Original-Reviewed-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: http://review.coreboot.org/9082
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
| -rw-r--r-- | src/arch/arm64/cpu.c | 25 | ||||
| -rw-r--r-- | src/arch/arm64/include/armv8/arch/cpu.h | 2 |
2 files changed, 27 insertions, 0 deletions
diff --git a/src/arch/arm64/cpu.c b/src/arch/arm64/cpu.c index 396c5b7ce9..c0dc3c3fa2 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 a5d20c49ac..d2623857aa 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__ */ |