diff options
| author | Jakub Kicinski <kuba@kernel.org> | 2020-08-21 16:59:19 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2020-08-21 16:59:23 -0700 |
| commit | 328004163c637a4505698baa71e5be0c3ee88d95 (patch) | |
| tree | 7d09ae36e34ae7c21cc8acbe9a5e30db184a1560 | |
| parent | 64423d89329183ed1c7f5dbee1c64458e4fcdcbb (diff) | |
| download | linux-tapi.tar.gz | |
tapi: remove the unclaim pathtapi
Reched doesn't come back in 300us only 1 in 20 times.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/core/dev.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 5d7a0237b375e..71078fdda5ca4 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -6271,7 +6271,6 @@ u32 TAPI_IDLE_MUL_SHF = 30; bool TAPI_POLLING; bool TAPI_BREAK_PREC; -bool TAPI_RESCHED_UNCLAIM; #include <linux/average.h> DECLARE_EWMA(tapi_avg_lat, 16, 1024); @@ -6866,22 +6865,6 @@ struct tapi_timer_wrap { struct task_struct *thread; }; -static void -tapi_unclaim_local(struct tapi_timer_wrap *tt, struct net_device *dev) -{ - struct napi_struct *napi; - - list_for_each_entry(napi, &dev->napi_list, dev_list) { - /* if TAPI_POLLING is set SCHED is never cleared */ - if (test_bit(NAPI_STATE_CLAIMED, &napi->state)) - continue; - - /* don't bother with atomicity, this is a hint */ - if (napi->last_poll_thread == tt->thread) - WRITE_ONCE(napi->last_poll_thread, NULL); - } -} - static struct napi_struct * find_ripe_napi(struct tapi_timer_wrap *tt, struct net_device *dev, bool from_idle, s64 *to, u64 *now) @@ -7075,8 +7058,6 @@ static int thread_dev_tapi(void *data) if (need_resched()) { trace_napi_poller_exit(0, 0, 'R'); - if (TAPI_RESCHED_UNCLAIM) - tapi_unclaim_local(&tt, dev); cond_resched(); trace_napi_poller_enter(0); } @@ -11059,8 +11040,6 @@ static int __init net_dev_init(void) debugfs_create_u32("tapi_break_min", 0666, NULL, &TAPI_BREAK_MIN); debugfs_create_u32("tapi_break_max", 0666, NULL, &TAPI_BREAK_MAX); debugfs_create_bool("tapi_polling", 0666, NULL, &TAPI_POLLING); - debugfs_create_bool("tapi_resched_unclaim", 0666, NULL, - &TAPI_RESCHED_UNCLAIM); debugfs_create_file("tapi_cnt", 0666, NULL, NULL, &tapi_stats_fops); |