4 Commits

Author	SHA1	Message	Date
hujun5	6e8ae12ef1	pthread: make PTHREAD_MUTEX_DEFAULT_UNSAFE default true ... Change the default pthread mutex robustness from ROBUST to UNSAFE when CONFIG_PTHREAD_MUTEX_BOTH is enabled. This reflects the practical default and allows removal of tracking code for non-robust mutexes, improving performance and reducing memory overhead. Signed-off-by: hujun5 <hujun5@xiaomi.com>	2026-01-26 20:56:12 +08:00
hujun5	082a3d3085	pthread: remove tl_lock ... This lock is currently used in three places, mainly to protect tls->tl_mhead. Among them, pthread_mutex_add and pthread_mutex_remove involve writing to tls->tl_mhead, and there is certainly no conflict within the same thread. As for pthread_mutex_inconsistent, it involves reading. Currently, it can only be called when the TCB task corresponding to this tls exits, and the TCB corresponding to the tls can no longer continue to run. It seems that adding the lock serves no real purpose. Signed-off-by: hujun5 <hujun5@xiaomi.com>	2026-01-26 20:56:12 +08:00
hujun5	217e685beb	pthread: move pthread_cond to userspace ... Move pthread condition variable implementation from kernel (sched/pthread) to userspace library (libs/libc/pthread). This allows userspace to handle condition variable operations directly, reducing syscall overhead and improving performance for pthread applications. Signed-off-by: hujun5 <hujun5@xiaomi.com>	2026-01-26 16:26:39 +08:00
hujun5	5051721298	sched/pthread: move pthread mutex from syscall to user-space ... Move pthread mutex operations from kernel-space syscall interface to user-space implementations to reduce syscall overhead. Relocate mutex holder list tracking from task control block (tcb) to thread local storage (tls) to improve memory layout and cache efficiency. Add helper macros for conditional mutex implementations and update syscall interface accordingly. Signed-off-by: hujun5 <hujun5@xiaomi.com>	2026-01-22 12:40:49 -03:00