Message ID | 20211105102636.1016378-11-clg@kaod.org (mailing list archive) |
---|---|
State | Accepted |
Headers | show |
Series | powerpc/xive: Improve diagnostic and activate StoreEOI on P10 PowerNV | expand |
diff --git a/arch/powerpc/sysdev/xive/xive-internal.h b/arch/powerpc/sysdev/xive/xive-internal.h index 504e7edce358..e0941bc64430 100644 --- a/arch/powerpc/sysdev/xive/xive-internal.h +++ b/arch/powerpc/sysdev/xive/xive-internal.h @@ -72,5 +72,6 @@ static inline u32 xive_alloc_order(u32 queue_shift) } extern bool xive_cmdline_disabled; +extern bool xive_has_save_restore; #endif /* __XIVE_INTERNAL_H */ diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index 67fd3a306369..39142df828a0 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -1848,6 +1848,7 @@ static void xive_core_debugfs_create(void) &xive_eq_debug_fops); } debugfs_create_bool("store-eoi", 0600, xive_dir, &xive_store_eoi); + debugfs_create_bool("save-restore", 0600, xive_dir, &xive_has_save_restore); } #endif /* CONFIG_DEBUG_FS */ diff --git a/arch/powerpc/sysdev/xive/native.c b/arch/powerpc/sysdev/xive/native.c index 7ec8911dad57..d6a091dc1bce 100644 --- a/arch/powerpc/sysdev/xive/native.c +++ b/arch/powerpc/sysdev/xive/native.c @@ -41,7 +41,7 @@ static u32 xive_queue_shift; static u32 xive_pool_vps = XIVE_INVALID_VP; static struct kmem_cache *xive_provision_cache; static bool xive_has_single_esc; -static bool xive_has_save_restore; +bool xive_has_save_restore; int xive_native_populate_irq_data(u32 hw_irq, struct xive_irq_data *data) {
On POWER10, the automatic "save & restore" of interrupt context is always available. Provide a way to deactivate it for tests or performance. Signed-off-by: Cédric Le Goater <clg@kaod.org> --- arch/powerpc/sysdev/xive/xive-internal.h | 1 + arch/powerpc/sysdev/xive/common.c | 1 + arch/powerpc/sysdev/xive/native.c | 2 +- 3 files changed, 3 insertions(+), 1 deletion(-)