#define _GNU_SOURCE #include #include #include #include #include "locking.h" #include "cpusched.h" #include "xmalloc.h" #include "hash.h" struct map_entry { int fd; unsigned int cpu; struct map_entry *next; }; static struct hash_table mapper; static unsigned int *cpu_work_map = NULL; static unsigned int cpu_len = 0; static struct rwlock map_lock; static int get_appropriate_cpu(void) { int i, cpu = 0; int work = INT_MAX; for (i = 0; i < cpu_len; ++i) { if (cpu_work_map[i] < work) { work = cpu_work_map[i]; cpu = i; } } return cpu; } unsigned int socket_to_cpu(int fd) { int cpu = 0; struct map_entry *entry; rwlock_rd_lock(&map_lock); entry = lookup_hash(fd, &mapper); while (entry && fd != entry->fd) entry = entry->next; if (entry && fd == entry->fd) cpu = entry->cpu; rwlock_unlock(&map_lock); return cpu; } unsigned int register_socket(int fd) { void **pos; struct map_entry *entry; rwlock_wr_lock(&map_lock); entry = xzmalloc(sizeof(*entry)); entry->fd = fd; entry->cpu = get_appropriate_cpu(); cpu_work_map[entry->cpu]++; pos = insert_hash(entry->fd, entry, &mapper); if (pos) { entry->next = (*pos); (*pos) = entry; } rwlock_unlock(&map_lock); return entry->cpu; } static struct map_entry *socket_to_map_entry(int fd) { struct map_entry *entry, *ret = NULL; rwlock_rd_lock(&map_lock); entry = lookup_hash(fd, &mapper); while (entry && fd != entry->fd) entry = entry->next; if (entry && fd == entry->fd) ret = entry; rwlock_unlock(&map_lock); return ret; } void unregister_socket(int fd) { struct map_entry *pos; struct map_entry *entry = socket_to_map_entry(fd); if (entry == NULL) return; rwlock_wr_lock(&map_lock); cpu_work_map[entry->cpu]--; pos = remove_hash(entry->fd, entry, entry->next, &mapper); while (pos && pos->next && pos->next != entry) pos = pos->next; if (pos && pos->next && pos->next == entry) pos->next = entry->next; entry->next = NULL; xfree(entry); rwlock_unlock(&map_lock); } static int cleanup_cpusched_batch(void *ptr) { struct map_entry *next; struct map_entry *entry = ptr; if (!entry) return 0; while ((next = entry->next)) { entry->next = NULL; xfree(entry); entry = next; } xfree(entry); return 0; } void init_cpusched(unsigned int cpus) { rwlock_init(&map_lock); cpu_work_map = xzmalloc((cpu_len = cpus) * sizeof(*cpu_work_map)); init_hash(&mapper); } void destroy_cpusched(void) { xfree(cpu_work_map); for_each_hash(&mapper, cleanup_cpusched_batch); free_hash(&mapper); rwlock_destroy(&map_lock); } idden' name='id' value='a45f9d41c9dd2c28e38b9b88f69c39bc63807de9'/>
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authorXing Zheng <zhengxing@rock-chips.com>2016-08-24 11:29:39 -0700
committerHeiko Stuebner <heiko@sntech.de>2016-08-24 23:44:49 +0200
commita45f9d41c9dd2c28e38b9b88f69c39bc63807de9 (patch)
treea588176a7558affcff0eb958ce1c9725fc3fb461
parent4608d96fb491125657fd8183a35921e4d4e27bc8 (diff)
clk: rockchip: mark aclk_emmc_noc as a critical clock on rk3399
We don't have code to handle any of the noc clocks in rk3399 and they're all just listed as critical clocks. Let's do the same for aclk_emmc_noc. Without this clock being marked as critical we have problems around suspend/resume after commit 20c389e656a8 ("clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399"). Before that change we were presumably not actually gating any of these clocks because we were setting the wrong gate. Fixes: 20c389e656a8 ("clk: rockchip: fix incorrect aclk_emmc source gate bits on rk3399") Signed-off-by: Xing Zheng <zhengxing@rock-chips.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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