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arch/x86,cpu/x86,lib/thread: Remove usage of cpu_info from lib/thread

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We only ever start and execute threads on the BSP. By explicitly
checking to see if the CPU is the BSP we can remove the dependency on
cpu_info. With this change we can in theory enable threads in all
stages.

BUG=b:194391185, b:179699789
TEST=Boot guybrush to OS and verify coop multithreading still works

Suggested-by: Julius Werner <jwerner@chromium.org>
Signed-off-by: Raul E Rangel <rrangel@chromium.org>
Change-Id: Iea4622d52c36d529e100b7ea55f32c334acfdf3e
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58199
Reviewed-by: Karthik Ramasubramanian <kramasub@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Raul E Rangel
2021-10-08 13:10:38 -06:00
committed by Felix Held
parent 12ae850dfc
commit c2c38f5fde
6 changed files with 15 additions and 23 deletions
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7
src/include/thread.h
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@ -73,11 +73,6 @@ void thread_coop_disable(void);
void thread_mutex_lock(struct thread_mutex *mutex);
void thread_mutex_unlock(struct thread_mutex *mutex);
static inline void thread_init_cpu_info_non_bsp(struct cpu_info *ci)
{
ci->thread = NULL;
}
/* Architecture specific thread functions. */
asmlinkage void switch_to_thread(uintptr_t new_stack, uintptr_t *saved_stack);
/* Set up the stack frame for a new thread so that a switch_to_thread() call
@ -96,8 +91,6 @@ static inline int thread_yield_microseconds(unsigned int microsecs)
}
static inline void thread_coop_enable(void) {}
static inline void thread_coop_disable(void) {}
struct cpu_info;
static inline void thread_init_cpu_info_non_bsp(struct cpu_info *ci) { }
static inline void thread_mutex_lock(struct thread_mutex *mutex) {}