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authorCédric Le Goater <clg@kaod.org>2020-04-29 09:51:22 +0200
committerMichael Ellerman <mpe@ellerman.id.au>2020-05-28 23:24:32 +1000
commit0755e85570a4615ca674ad6489d44d63916f1f3e (patch)
treedb222c055a90bd7a2c2f40e59362ee64fd590854 /arch/powerpc/sysdev
parenta101950fcb78b0ba20cd487be6627dea58d55c2b (diff)
downloadlinux-0755e85570a4615ca674ad6489d44d63916f1f3e.tar.bz2
powerpc/xive: Do not expose a debugfs file when XIVE is disabled
The XIVE interrupt mode can be disabled with the "xive=off" kernel parameter, in which case there is nothing to present to the user in the associated /sys/kernel/debug/powerpc/xive file. Fixes: 930914b7d528 ("powerpc/xive: Add a debugfs file to dump internal XIVE state") Signed-off-by: Cédric Le Goater <clg@kaod.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200429075122.1216388-4-clg@kaod.org
Diffstat (limited to 'arch/powerpc/sysdev')
-rw-r--r--arch/powerpc/sysdev/xive/common.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c
index 3dbc94cb4380..f591be9f01f4 100644
--- a/arch/powerpc/sysdev/xive/common.c
+++ b/arch/powerpc/sysdev/xive/common.c
@@ -1664,7 +1664,8 @@ DEFINE_SHOW_ATTRIBUTE(xive_core_debug);
int xive_core_debug_init(void)
{
- debugfs_create_file("xive", 0400, powerpc_debugfs_root,
- NULL, &xive_core_debug_fops);
+ if (xive_enabled())
+ debugfs_create_file("xive", 0400, powerpc_debugfs_root,
+ NULL, &xive_core_debug_fops);
return 0;
}