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Kernel: Make a slightly better demo for Aarch64 multiprocessing

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konrad 2023-01-08 12:47:14 +01:00 committed by Jelle Raaijmakers
parent 9b12571a86
commit 78d6de2ec1
Notes: sideshowbarker 2024-07-19 16:58:06 +09:00 
Author: https://github.com/konradekk
Commit: https://github.com/SerenityOS/serenity/commit/78d6de2ec1c
Pull-request: https://github.com/SerenityOS/serenity/pull/16781
Reviewed-by: https://github.com/ADKaster ✅
Reviewed-by: https://github.com/gmta
1 changed files with 20 additions and 13 deletions
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33
Kernel/Arch/aarch64/init.cpp
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@ -100,28 +100,35 @@ void init_stage2(void*)
Process::register_new(Process::current());
// This thread is created to show that kernel scheduling is working!
LockRefPtr<Thread> more_work_thread;
(void)Process::create_kernel_process(more_work_thread, MUST(KString::try_create("More Work Thread"sv)), [] {
dmesgln("Enter loop (more work):");
for (int i = 0; i < 500; i++) {
LockRefPtr<Thread> some_work_thread;
(void)Process::create_kernel_process(some_work_thread, MUST(KString::try_create("Some Work Thread"sv)), [] {
Aarch64::Asm::wait_cycles(50000000);
dmesgln("Starting \033[0;31msome work\033[0m:");
for (int i = 1; i <= 500; i++) {
if (i % 20 == 0)
dmesgln(" Hello from more_work: {}", i);
dmesgln(" Working on \033[0;31msome work\033[0m: {}", i);
Aarch64::Asm::wait_cycles(1000000);
Aarch64::Asm::wait_cycles(400000);
}
dmesgln("Finished the work!");
dmesgln("Finished \033[0;31msome work\033[0m!");
});
auto firmware_version = query_firmware_version();
dmesgln("Firmware version: {}", firmware_version);
dmesgln("Enter loop");
for (int i = 0;; i++) {
if (i % 20 == 0)
dmesgln("Hello from init_stage2: {}", i);
LockRefPtr<Thread> more_work_thread;
(void)Process::create_kernel_process(more_work_thread, MUST(KString::try_create("More Work Thread"sv)), [] {
dmesgln("Starting \033[0;34mmore work\033[0m:");
for (int i = 1; i <= 300; i++) {
if (i % 20 == 0)
dmesgln(" Working on \033[0;34mmore work\033[0m: {}", i);
Aarch64::Asm::wait_cycles(1000000);
}
Aarch64::Asm::wait_cycles(1000000);
}
dmesgln("Finished \033[0;34mmore work\033[0m!");
});
dmesgln("Finished init stage");
}
extern "C" [[noreturn]] void init()