| Message ID | 20241028175935.51250-1-arikalo@gmail.com |
|---|---|
| Headers | show |
| Series | MIPS: Support I6500 multi-cluster configuration | expand |
On Mon, Oct 28 2024 at 18:59, Aleksandar Rikalo wrote: > + * In summary, if this function returns true then the caller should access GIC > + * registers using redirect register block accessors & then call > + * mips_cm_unlock_other() when done. If this function returns false then the > + * caller should trivially access GIC registers in the local cluster. > + * > + * Returns true if locking performed, else false. > + */ > +static bool gic_irq_lock_cluster(struct irq_data *d) > +{ > + unsigned int cpu, cl; > + > + cpu = cpumask_first(irq_data_get_effective_affinity_mask(d)); > + BUG_ON(cpu >= NR_CPUS); > + > + cl = cpu_cluster(&cpu_data[cpu]); > + if (cl == cpu_cluster(¤t_cpu_data)) > + return false; Not that I personally care much about the performance of this. But why aren't you caching the cluster or at least the target CPU in irq_data somewhere? cpumask_first() is not cheap on a large system when the cpu is at the very end of the bitmask. AFAICT nothing here uses chip_data, so you can do: unsigned long cl = (unsigned long)irq_data_get_irq_chip_data(d); which is a single load operation and you can update it in the set_affinity() callback and during setup. No? I'll take the irqchip bits as is if nobody complains within the next days and you can optimize on top if you care. Thanks, tglx
在2024年10月28日十月 下午5:59，Aleksandar Rikalo写道： > Taken from Paul Burton MIPS repo with minor changes from Chao-ying Fu. > Tested with 64r6el_defconfig on Boston board in 2 cluster/2 VPU and > 1 cluster/4 VPU configurations. For the whole series (despite pending dt-binding discussion): Reviewd-by: Jiaxun Yang <jiaxun.yang@flygoat.com> Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com> # Single cluster I6500 Thanks. - Jiaxun > > v8: > - irqchip: mips-gic: Handle case with cluster without CPU cores. > - Add Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com> for the > entire series. > - Re-base onto the master branch, with no functionality impact. > > v7: > - Add fixes for specific CM3.5 which is used in EyeQ6H SoCs, suggested > by Gregory Clement. > - Re-base onto the master branch, with no functionality impact. > > v6: > - Re-base onto the master branch, with no functionality impact. > - Correct the issue reported by the kernel test robot. > > v5: > - Drop FDC related changes (patches 12, 13, and 14). > - Apply changes suggested by Thomas Gleixner (patches 3 and 4). > - Add #include <linux/cpumask.h> to patch 1, suggested by Thomas > Bogendoerfer. > - Add Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> for the > patch 08/11. > - Add Tested-by: Serge Semin <fancer.lancer@gmail.com> for the entire > series. > - Correct some commit messages. > > v4: > - Re-base onto the master branch, with no functionality impact. > - Refactor MIPS FDC driver in the context of multicluster support. > > v3: > - Add Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> for the patch 02/12. > - Add the changes requested by Marc Zyngier for the 3/12 patch. > - Remove the patch 11/12 (a consequence of a discussion between Jiaxun Yang > and Marc Zyngier. > - Re-base onto the master branch, with no functionality impact. > > v2: > - Apply correct Signed-off-by to avoid confusion. > > Chao-ying Fu (1): > irqchip/mips-gic: Setup defaults in each cluster > > Gregory CLEMENT (4): > dt-bindings: mips: cpu: Add property for broken HCI information > MIPS: CPS: Support broken HCI for multicluster > MIPS: mobileye: dts: eyeq6h: Enable cluster support > irqchip: mips-gic: Handle case with cluster without CPU cores > > Paul Burton (8): > irqchip/mips-gic: Introduce for_each_online_cpu_gic() > irqchip/mips-gic: Support multi-cluster in for_each_online_cpu_gic() > irqchip/mips-gic: Multi-cluster support > clocksource: mips-gic-timer: Always use cluster 0 counter as > clocksource > clocksource: mips-gic-timer: Enable counter when CPUs start > MIPS: pm-cps: Use per-CPU variables as per-CPU, not per-core > MIPS: CPS: Introduce struct cluster_boot_config > MIPS: CPS: Boot CPUs in secondary clusters > > .../devicetree/bindings/mips/cpus.yaml | 6 + > arch/mips/boot/dts/mobileye/eyeq6h.dtsi | 1 + > arch/mips/include/asm/mips-cm.h | 18 ++ > arch/mips/include/asm/smp-cps.h | 7 +- > arch/mips/kernel/asm-offsets.c | 3 + > arch/mips/kernel/cps-vec.S | 19 +- > arch/mips/kernel/mips-cm.c | 4 +- > arch/mips/kernel/pm-cps.c | 35 +- > arch/mips/kernel/smp-cps.c | 305 +++++++++++++++--- > drivers/clocksource/mips-gic-timer.c | 45 ++- > drivers/irqchip/Kconfig | 1 + > drivers/irqchip/irq-mips-gic.c | 269 ++++++++++++--- > 12 files changed, 599 insertions(+), 114 deletions(-) > > -- > 2.25.1
On Wed, 30 Oct 2024, Jiaxun Yang wrote:
> Reviewd-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Typo here.
Maciej
Taken from Paul Burton MIPS repo with minor changes from Chao-ying Fu. Tested with 64r6el_defconfig on Boston board in 2 cluster/2 VPU and 1 cluster/4 VPU configurations. v8: - irqchip: mips-gic: Handle case with cluster without CPU cores. - Add Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com> for the entire series. - Re-base onto the master branch, with no functionality impact. v7: - Add fixes for specific CM3.5 which is used in EyeQ6H SoCs, suggested by Gregory Clement. - Re-base onto the master branch, with no functionality impact. v6: - Re-base onto the master branch, with no functionality impact. - Correct the issue reported by the kernel test robot. v5: - Drop FDC related changes (patches 12, 13, and 14). - Apply changes suggested by Thomas Gleixner (patches 3 and 4). - Add #include <linux/cpumask.h> to patch 1, suggested by Thomas Bogendoerfer. - Add Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> for the patch 08/11. - Add Tested-by: Serge Semin <fancer.lancer@gmail.com> for the entire series. - Correct some commit messages. v4: - Re-base onto the master branch, with no functionality impact. - Refactor MIPS FDC driver in the context of multicluster support. v3: - Add Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com> for the patch 02/12. - Add the changes requested by Marc Zyngier for the 3/12 patch. - Remove the patch 11/12 (a consequence of a discussion between Jiaxun Yang and Marc Zyngier. - Re-base onto the master branch, with no functionality impact. v2: - Apply correct Signed-off-by to avoid confusion. Chao-ying Fu (1): irqchip/mips-gic: Setup defaults in each cluster Gregory CLEMENT (4): dt-bindings: mips: cpu: Add property for broken HCI information MIPS: CPS: Support broken HCI for multicluster MIPS: mobileye: dts: eyeq6h: Enable cluster support irqchip: mips-gic: Handle case with cluster without CPU cores Paul Burton (8): irqchip/mips-gic: Introduce for_each_online_cpu_gic() irqchip/mips-gic: Support multi-cluster in for_each_online_cpu_gic() irqchip/mips-gic: Multi-cluster support clocksource: mips-gic-timer: Always use cluster 0 counter as clocksource clocksource: mips-gic-timer: Enable counter when CPUs start MIPS: pm-cps: Use per-CPU variables as per-CPU, not per-core MIPS: CPS: Introduce struct cluster_boot_config MIPS: CPS: Boot CPUs in secondary clusters .../devicetree/bindings/mips/cpus.yaml | 6 + arch/mips/boot/dts/mobileye/eyeq6h.dtsi | 1 + arch/mips/include/asm/mips-cm.h | 18 ++ arch/mips/include/asm/smp-cps.h | 7 +- arch/mips/kernel/asm-offsets.c | 3 + arch/mips/kernel/cps-vec.S | 19 +- arch/mips/kernel/mips-cm.c | 4 +- arch/mips/kernel/pm-cps.c | 35 +- arch/mips/kernel/smp-cps.c | 305 +++++++++++++++--- drivers/clocksource/mips-gic-timer.c | 45 ++- drivers/irqchip/Kconfig | 1 + drivers/irqchip/irq-mips-gic.c | 269 ++++++++++++--- 12 files changed, 599 insertions(+), 114 deletions(-)