Commit-ID: a07771ac6a78860777a9da5d9bc38830ec993fe7 Gitweb: https://git.kernel.org/tip/a07771ac6a78860777a9da5d9bc38830ec993fe7 Author: Thomas Gleixner <t...@linutronix.de> AuthorDate: Mon, 4 Jun 2018 17:34:00 +0200 Committer: Thomas Gleixner <t...@linutronix.de> CommitDate: Wed, 6 Jun 2018 15:18:22 +0200
x86/apic/vector: Print APIC control bits in debugfs Extend the debugability of the vector management by adding the state bits to the debugfs output. Signed-off-by: Thomas Gleixner <t...@linutronix.de> Tested-by: Song Liu <songliubrav...@fb.com> Cc: Joerg Roedel <jroe...@suse.de> Cc: Peter Zijlstra <pet...@infradead.org> Cc: Song Liu <liu.song....@gmail.com> Cc: Dmitry Safonov <0x7f454...@gmail.com> Cc: Mike Travis <mike.tra...@hpe.com> Cc: Borislav Petkov <b...@alien8.de> Cc: Tariq Toukan <tar...@mellanox.com> Link: https://lkml.kernel.org/r/20180604162224.908136...@linutronix.de --- arch/x86/kernel/apic/vector.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/arch/x86/kernel/apic/vector.c b/arch/x86/kernel/apic/vector.c index b708f597eee3..35aaee4fc028 100644 --- a/arch/x86/kernel/apic/vector.c +++ b/arch/x86/kernel/apic/vector.c @@ -588,8 +588,7 @@ error: static void x86_vector_debug_show(struct seq_file *m, struct irq_domain *d, struct irq_data *irqd, int ind) { - unsigned int cpu, vector, prev_cpu, prev_vector; - struct apic_chip_data *apicd; + struct apic_chip_data apicd; unsigned long flags; int irq; @@ -605,24 +604,26 @@ static void x86_vector_debug_show(struct seq_file *m, struct irq_domain *d, return; } - apicd = irqd->chip_data; - if (!apicd) { + if (!irqd->chip_data) { seq_printf(m, "%*sVector: Not assigned\n", ind, ""); return; } raw_spin_lock_irqsave(&vector_lock, flags); - cpu = apicd->cpu; - vector = apicd->vector; - prev_cpu = apicd->prev_cpu; - prev_vector = apicd->prev_vector; + memcpy(&apicd, irqd->chip_data, sizeof(apicd)); raw_spin_unlock_irqrestore(&vector_lock, flags); - seq_printf(m, "%*sVector: %5u\n", ind, "", vector); - seq_printf(m, "%*sTarget: %5u\n", ind, "", cpu); - if (prev_vector) { - seq_printf(m, "%*sPrevious vector: %5u\n", ind, "", prev_vector); - seq_printf(m, "%*sPrevious target: %5u\n", ind, "", prev_cpu); + + seq_printf(m, "%*sVector: %5u\n", ind, "", apicd.vector); + seq_printf(m, "%*sTarget: %5u\n", ind, "", apicd.cpu); + if (apicd.prev_vector) { + seq_printf(m, "%*sPrevious vector: %5u\n", ind, "", apicd.prev_vector); + seq_printf(m, "%*sPrevious target: %5u\n", ind, "", apicd.prev_cpu); } + seq_printf(m, "%*smove_in_progress: %u\n", ind, "", apicd.move_in_progress ? 1 : 0); + seq_printf(m, "%*sis_managed: %u\n", ind, "", apicd.is_managed ? 1 : 0); + seq_printf(m, "%*scan_reserve: %u\n", ind, "", apicd.can_reserve ? 1 : 0); + seq_printf(m, "%*shas_reserved: %u\n", ind, "", apicd.has_reserved ? 1 : 0); + seq_printf(m, "%*scleanup_pending: %u\n", ind, "", !hlist_unhashed(&apicd.clist)); } #endif
