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authorThomas Gleixner <tglx@linutronix.de>2017-09-13 23:29:04 +0200
committerThomas Gleixner <tglx@linutronix.de>2017-09-25 20:38:22 +0200
commite0b477941d130576d9daf31160dab6e34335b10a (patch)
tree3127129c7ffc64919e2e49a75fdf89f938cc8554 /kernel/irq
parent2827a418ca1b23e432e62c9b3d0e7cf3255dfe88 (diff)
downloadlinux-e0b477941d130576d9daf31160dab6e34335b10a.tar.bz2
genirq/debugfs: Show debug information for all irq descriptors
Currently the debugfs shows only information about actively used interrupts like /proc/irq/ does. That's fine for most cases, but not helpful when internals of allocated, but unused interrupt descriptors have to debugged. It's also useful to provide information about all descriptors so leaks can be debugged in a simpler way. Move the debugfs registration to the descriptor allocation code. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Juergen Gross <jgross@suse.com> Tested-by: Yu Chen <yu.c.chen@intel.com> Acked-by: Juergen Gross <jgross@suse.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Marc Zyngier <marc.zyngier@arm.com> Cc: Alok Kataria <akataria@vmware.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Rui Zhang <rui.zhang@intel.com> Cc: "K. Y. Srinivasan" <kys@microsoft.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Len Brown <lenb@kernel.org> Link: https://lkml.kernel.org/r/20170913213152.355525908@linutronix.de
Diffstat (limited to 'kernel/irq')
-rw-r--r--kernel/irq/irqdesc.c1
-rw-r--r--kernel/irq/manage.c1
2 files changed, 1 insertions, 1 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 82afb7ed369f..0f6805b75fc8 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -462,6 +462,7 @@ static int alloc_descs(unsigned int start, unsigned int cnt, int node,
goto err;
irq_insert_desc(start + i, desc);
irq_sysfs_add(start + i, desc);
+ irq_add_debugfs_entry(start + i, desc);
}
bitmap_set(allocated_irqs, start, cnt);
return start;
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index d00132b5c325..0e8b48315f3c 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1400,7 +1400,6 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
wake_up_process(new->secondary->thread);
register_irq_proc(irq, desc);
- irq_add_debugfs_entry(irq, desc);
new->dir = NULL;
register_handler_proc(irq, new);
return 0;