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powerpc/xive: Introduce xive_core_debugfs_create()

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and fix some compile issues when !CONFIG_DEBUG_FS.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
[mpe: Add empty stub to fix !CONFIG_DEBUG_FS build]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211105102636.1016378-5-clg@kaod.org
This commit is contained in:
Cédric Le Goater 2021-11-05 11:26:29 +01:00 committed by Michael Ellerman
parent 756c52c632
commit 412877dfae
1 changed files with 15 additions and 3 deletions
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18
arch/powerpc/sysdev/xive/common.c
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@ -227,6 +227,7 @@ static void xive_esb_write(struct xive_irq_data *xd, u32 offset, u64 data)
out_be64(xd->eoi_mmio + offset, data);
}
#if defined(CONFIG_XMON) || defined(CONFIG_DEBUG_FS)
static void xive_irq_data_dump(struct xive_irq_data *xd, char *buffer, size_t size)
{
u64 val = xive_esb_read(xd, XIVE_ESB_GET);
@ -239,6 +240,7 @@ static void xive_irq_data_dump(struct xive_irq_data *xd, char *buffer, size_t si
val & XIVE_ESB_VAL_Q ? 'Q' : '-',
xd->trig_page, xd->eoi_page);
}
#endif
#ifdef CONFIG_XMON
static notrace void xive_dump_eq(const char *name, struct xive_q *q)
@ -1700,6 +1702,7 @@ static int __init xive_off(char *arg)
}
__setup("xive=off", xive_off);
#ifdef CONFIG_DEBUG_FS
static void xive_debug_show_cpu(struct seq_file *m, int cpu)
{
struct xive_cpu *xc = per_cpu(xive_cpu, cpu);
@ -1778,10 +1781,19 @@ static int xive_core_debug_show(struct seq_file *m, void *private)
}
DEFINE_SHOW_ATTRIBUTE(xive_core_debug);
static void xive_core_debugfs_create(void)
{
debugfs_create_file("xive", 0400, arch_debugfs_dir,
NULL, &xive_core_debug_fops);
}
#else
static inline void xive_core_debugfs_create(void) { }
#endif /* CONFIG_DEBUG_FS */
int xive_core_debug_init(void)
{
if (xive_enabled())
debugfs_create_file("xive", 0400, arch_debugfs_dir,
NULL, &xive_core_debug_fops);
if (xive_enabled() && IS_ENABLED(CONFIG_DEBUG_FS))
xive_core_debugfs_create();
return 0;
}