diff options
| author | Thomas Gleixner <tglx@kernel.org> | 2026-05-17 22:01:38 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@kernel.org> | 2026-05-26 16:21:11 +0200 |
| commit | 95c33a64f203be444954a1e1d855a4820c4f0efa (patch) | |
| tree | 64cf92edfb61bcddab0ff1d0877ad12ff2f4329e /include/linux | |
| parent | 115bbf0c1b60cb7bed348c64694eb88e21e7d458 (diff) | |
genirq/proc: Avoid formatting zero counts in /proc/interrupts
A large portion of interrupt count entries are zero. There is no point in
formatting the zero value as it is way cheeper to just emit a constant
string.
Collect the number of consecutive zero counts and emit them in one go
before a non-zero count and at the end of the line.
Signed-off-by: Thomas Gleixner <tglx@kernel.org>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Reviewed-by: Dmitry Ilvokhin <d@ilvokhin.com>
Reviewed-by: Radu Rendec <radu@rendec.net>
Reviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Link: https://patch.msgid.link/20260517194931.034728540@kernel.org
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/interrupt.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h index 6cd26ffb0505..3bf969ad8fe0 100644 --- a/include/linux/interrupt.h +++ b/include/linux/interrupt.h @@ -864,6 +864,7 @@ static inline void init_irq_proc(void) struct seq_file; int show_interrupts(struct seq_file *p, void *v); int arch_show_interrupts(struct seq_file *p, int prec); +void irq_proc_emit_counts(struct seq_file *p, unsigned int __percpu *cnts); extern int early_irq_init(void); extern int arch_probe_nr_irqs(void); |