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procfs_read/write(): rewrite synchronization for scalability and correctness

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Balazs Gerofi
2016-12-28 14:17:17 +09:00
parent 536ce9f927
commit 40978d162e
6 changed files with 162 additions and 152 deletions
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5
executer/kernel/mcctrl/mcctrl.h
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@@ -197,6 +197,7 @@ struct mcctrl_per_proc_data {
struct list_head wq_list_exact;
ihk_spinlock_t wq_list_lock;
wait_queue_head_t wq_prepare;
wait_queue_head_t wq_procfs;
struct list_head per_thread_data_hash[MCCTRL_PER_THREAD_DATA_HASH_SIZE];
rwlock_t per_thread_data_hash_lock[MCCTRL_PER_THREAD_DATA_HASH_SIZE];
@@ -283,7 +284,7 @@ struct mcctrl_usrdata {
int job_pos;
int mcctrl_dma_abort;
unsigned long last_thread_exec;
wait_queue_head_t wq_procfs;
struct list_head per_proc_data_hash[MCCTRL_PER_PROC_DATA_HASH_SIZE];
rwlock_t per_proc_data_hash_lock[MCCTRL_PER_PROC_DATA_HASH_SIZE];
@@ -351,7 +352,7 @@ struct procfs_file {
char fname[PROCFS_NAME_MAX]; /* procfs filename (request) */
};
void procfs_answer(unsigned int arg, int err);
void procfs_answer(struct mcctrl_usrdata *ud, int pid);
int procfsm_packet_handler(void *os, int msg, int pid, unsigned long arg);
void add_tid_entry(int osnum, int pid, int tid);
void add_pid_entry(int osnum, int pid);