diff options
| author | Ingo Molnar <mingo@kernel.org> | 2018-02-26 08:39:26 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-02-26 08:41:15 +0100 |
| commit | 3f7df3efeb415610d27aecc282ff96d4a22f0168 (patch) | |
| tree | 0f66382746a1311043a25320243ff5f4b10c282e /kernel/irq/matrix.c | |
| parent | 39b9552281abfcdfc54162897018890dafe7ffef (diff) | |
| parent | 4a3928c6f8a53fa1aed28ccba227742486e8ddcb (diff) | |
Merge tag 'v4.16-rc3' into x86/mm, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/irq/matrix.c')
| -rw-r--r-- | kernel/irq/matrix.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c index 5187dfe809ac..4c5770407031 100644 --- a/kernel/irq/matrix.c +++ b/kernel/irq/matrix.c @@ -16,6 +16,7 @@ struct cpumap { unsigned int available; unsigned int allocated; unsigned int managed; + bool initialized; bool online; unsigned long alloc_map[IRQ_MATRIX_SIZE]; unsigned long managed_map[IRQ_MATRIX_SIZE]; @@ -81,9 +82,11 @@ void irq_matrix_online(struct irq_matrix *m) BUG_ON(cm->online); - bitmap_zero(cm->alloc_map, m->matrix_bits); - cm->available = m->alloc_size - (cm->managed + m->systembits_inalloc); - cm->allocated = 0; + if (!cm->initialized) { + cm->available = m->alloc_size; + cm->available -= cm->managed + m->systembits_inalloc; + cm->initialized = true; + } m->global_available += cm->available; cm->online = true; m->online_maps++; @@ -370,14 +373,16 @@ void irq_matrix_free(struct irq_matrix *m, unsigned int cpu, if (WARN_ON_ONCE(bit < m->alloc_start || bit >= m->alloc_end)) return; - if (cm->online) { - clear_bit(bit, cm->alloc_map); - cm->allocated--; + clear_bit(bit, cm->alloc_map); + cm->allocated--; + + if (cm->online) m->total_allocated--; - if (!managed) { - cm->available++; + + if (!managed) { + cm->available++; + if (cm->online) m->global_available++; - } } trace_irq_matrix_free(bit, cpu, m, cm); } |