diff options
| author | Thomas Gleixner <tglx@kernel.org> | 2026-05-17 22:02:34 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-05-26 16:21:14 +0200 |
| commit | 1d9c4745bfb6773712751f5068c23ebad9cd30a0 (patch) | |
| tree | 611065787ab5d46985f6a6b21b1e90196643ffbe /include/linux | |
| parent | 34594da7650d3ea67f96c0f4034ff6b2453f67c3 (diff) | |
genirq: Add rcuref count to struct irq_desc
Prepare for a smarter iterator for /proc/interrupts so that the next
interrupt descriptor can be cached after lookup.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Dmitry Ilvokhin <d@ilvokhin.com>
Link: https://patch.msgid.link/20260517194931.917415190@kernel.org
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/irqdesc.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 1058786d76eb..8080db17c1b1 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -70,6 +70,7 @@ struct irq_redirect { * IRQF_NO_SUSPEND set * @force_resume_depth: number of irqactions on a irq descriptor with * IRQF_FORCE_RESUME set + * @refcnt: Reference count mainly for /proc/interrupts * @rcu: rcu head for delayed free * @kobj: kobject used to represent this struct in sysfs * @request_mutex: mutex to protect request/free before locking desc->lock @@ -119,6 +120,7 @@ struct irq_desc { struct dentry *debugfs_file; const char *dev_name; #endif + rcuref_t refcnt; #ifdef CONFIG_SPARSE_IRQ struct rcu_head rcu; struct kobject kobj; |