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arch/x86: (Intel64) add z_arch_curr_cpu() to enable CONFIG_SMP=y

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And set qemu_x86_long board to build with CONFIG_SMP=y by default.
Apparently two benchmark tests - latency_measure and sys_kernel -
do not work with the SMP scheduler, so those tests are disabled.

Signed-off-by: Charles E. Youse <charles.youse@intel.com>
This commit is contained in:
Charles E. Youse 2019-09-24 11:09:55 -04:00 • committed by Anas Nashif
commit 8d97750eef
5 changed files with 18 additions and 0 deletions
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11
arch/x86/include/intel64/kernel_arch_func.h
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@ -15,6 +15,17 @@ static inline void z_arch_kernel_init(void)
/* nothing */;
}
static inline struct _cpu *z_arch_curr_cpu(void)
{
struct _cpu *cpu;
__asm__ volatile("movq %%gs:(%c1), %0"
: "=r" (cpu)
: "i" (offsetof(x86_tss64_t, cpu)));
return cpu;
}
#endif /* _ASMLANGUAGE */
#endif /* ZEPHYR_ARCH_X86_INCLUDE_INTEL64_KERNEL_ARCH_FUNC_H_ */

4
arch/x86/include/kernel_arch_func.h
View file

@ -12,7 +12,11 @@
#include <ia32/kernel_arch_func.h>
#endif
#ifdef CONFIG_SMP
#define z_arch_is_in_isr() (z_arch_curr_cpu()->nested != 0U)
#else
#define z_arch_is_in_isr() (_kernel.nested != 0U)
#endif
#ifndef _ASMLANGUAGE

1
boards/x86/qemu_x86/qemu_x86_long_defconfig
View file

@ -14,3 +14,4 @@ CONFIG_UART_CONSOLE=y
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=25000000
CONFIG_TEST_RANDOM_GENERATOR=y
CONFIG_DEBUG_INFO=y
CONFIG_SMP=y

1
tests/benchmarks/latency_measure/testcase.yaml
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@ -1,5 +1,6 @@
tests:
benchmark.latency:
arch_whitelist: x86 arm posix
platform_exclude: qemu_x86_long
filter: CONFIG_PRINTK
tags: benchmark

1
tests/benchmarks/sys_kernel/testcase.yaml
View file

@ -1,5 +1,6 @@
tests:
benchmark.kernel:
arch_exclude: nios2 riscv32 xtensa x86_64
platform_exclude: qemu_x86_long
min_ram: 32
tags: benchmark