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| author | Peter Zijlstra <peterz@infradead.org> | 2024-12-20 15:31:19 +0100 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2024-12-20 15:31:19 +0100 |
| commit | c2db11a750fb626d0d04f2dc76e548a1f07617df (patch) | |
| tree | 01c899b2a06855633ae991f2064242f976987809 /net/core/dev.c | |
| parent | 63a48181fbcddefe5fb4c6618938bb64c543945b (diff) | |
| parent | 4a077914578183ec397ad09f7156a357e00e5d72 (diff) | |
Merge branch 'locking/urgent'
Sync with urgent -- avoid conflicts.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Diffstat (limited to 'net/core/dev.c')
| -rw-r--r-- | net/core/dev.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index 13d00fc10f55..45a8c3dd4a64 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -6557,18 +6557,22 @@ static void __napi_hash_add_with_id(struct napi_struct *napi, static void napi_hash_add_with_id(struct napi_struct *napi, unsigned int napi_id) { - spin_lock(&napi_hash_lock); + unsigned long flags; + + spin_lock_irqsave(&napi_hash_lock, flags); WARN_ON_ONCE(napi_by_id(napi_id)); __napi_hash_add_with_id(napi, napi_id); - spin_unlock(&napi_hash_lock); + spin_unlock_irqrestore(&napi_hash_lock, flags); } static void napi_hash_add(struct napi_struct *napi) { + unsigned long flags; + if (test_bit(NAPI_STATE_NO_BUSY_POLL, &napi->state)) return; - spin_lock(&napi_hash_lock); + spin_lock_irqsave(&napi_hash_lock, flags); /* 0..NR_CPUS range is reserved for sender_cpu use */ do { @@ -6578,7 +6582,7 @@ static void napi_hash_add(struct napi_struct *napi) __napi_hash_add_with_id(napi, napi_gen_id); - spin_unlock(&napi_hash_lock); + spin_unlock_irqrestore(&napi_hash_lock, flags); } /* Warning : caller is responsible to make sure rcu grace period @@ -6586,11 +6590,13 @@ static void napi_hash_add(struct napi_struct *napi) */ static void napi_hash_del(struct napi_struct *napi) { - spin_lock(&napi_hash_lock); + unsigned long flags; + + spin_lock_irqsave(&napi_hash_lock, flags); hlist_del_init_rcu(&napi->napi_hash_node); - spin_unlock(&napi_hash_lock); + spin_unlock_irqrestore(&napi_hash_lock, flags); } static enum hrtimer_restart napi_watchdog(struct hrtimer *timer) |