> > The OwnerId field within a namespace node is 8 bits, and this is the > main constraint on the maximum OwnerId. You can't simply bump up the > number of owner ids without changing this field. Isn't this accomplished with the mod to aclocal.h below - i.e. by making a acpi_owner_id a u16 instead of a u8?: -typedef u8 acpi_owner_id; -#define ACPI_OWNER_ID_MAX 0xFF +typedef u16 acpi_owner_id; +#define ACPI_OWNER_ID_MAX 0x3FF > > If we need more than 255 owner Ids, the width of this field will have to > be increased, or we will need to use a pointer for the field in order to > maintain a linked list of all nodes owned by a particular owner. > > Bob > > > -----Original Message----- > > From: linux-acpi-owner@xxxxxxxxxxxxxxx [mailto:linux-acpi- > > owner@xxxxxxxxxxxxxxx] On Behalf Of John Keller > > Sent: Friday, January 26, 2007 2:40 PM > > To: linux-acpi@xxxxxxxxxxxxxxx > > Cc: ayoung@xxxxxxx; linux-ia64@xxxxxxxxxxxxxxx; linux- > > kernel@xxxxxxxxxxxxxxx; John Keller > > Subject: [PATCH 1/1] - increase acpi owner_id max > > > > To support systems with large IO configurations, > > this patch increases the number of available ACPI > > owner ids to 1023. > > > > On SN platforms, we represent every populated root > > bus slot with an ACPI SSDT table containing info > > for every device and PPB attached to the slot. > > Each SSDT requires a unique ACPI owner id. > > > > Signed-off-by: John Keller <jpk@xxxxxxx> > > --- > > > > drivers/acpi/utilities/utmisc.c | 6 +++--- > > include/acpi/acconfig.h | 4 ++-- > > include/acpi/aclocal.h | 4 ++-- > > 3 files changed, 7 insertions(+), 7 deletions(-) > > > > > > Index: linux/drivers/acpi/utilities/utmisc.c > > =================================================================== > > --- linux.orig/drivers/acpi/utilities/utmisc.c 2007-01-25 > > 11:27:25.509259412 -0600 > > +++ linux/drivers/acpi/utilities/utmisc.c 2007-01-26 > 13:16:09.551081284 - > > 0600 > > @@ -147,7 +147,7 @@ acpi_status acpi_ut_allocate_owner_id(ac > > /* > > * Construct encoded ID from the index > and bit > > position > > * > > - * Note: Last [j].k (bit 255) is never > used and is > > marked > > + * Note: Last [j].k (bit 1023) is never > used and > > is marked > > * permanently allocated (prevents +1 > overflow) > > */ > > *owner_id = > > @@ -175,7 +175,7 @@ acpi_status acpi_ut_allocate_owner_id(ac > > */ > > status = AE_OWNER_ID_LIMIT; > > ACPI_ERROR((AE_INFO, > > - "Could not allocate new OwnerId (255 max), > > AE_OWNER_ID_LIMIT")); > > + "Could not allocate new OwnerId (1023 max), > > AE_OWNER_ID_LIMIT")); > > > > exit: > > (void)acpi_ut_release_mutex(ACPI_MTX_CACHES); > > @@ -192,7 +192,7 @@ acpi_status acpi_ut_allocate_owner_id(ac > > * control method or unloading a table. Either way, we > would > > * ignore any error anyway. > > * > > - * DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 > - > > 255 > > + * DESCRIPTION: Release a table or method owner ID. Valid IDs are 1 > - > > 1023 > > * > > > > > ************************************************************************ > ** > > ****/ > > > > Index: linux/include/acpi/acconfig.h > > =================================================================== > > --- linux.orig/include/acpi/acconfig.h 2007-01-25 > 11:27:25.577267818 - > > 0600 > > +++ linux/include/acpi/acconfig.h 2007-01-26 13:17:14.111002597 > -0600 > > @@ -111,9 +111,9 @@ > > > > #define ACPI_SYSMEM_REGION_WINDOW_SIZE 4096 > > > > -/* owner_id tracking. 8 entries allows for 255 owner_ids */ > > +/* owner_id tracking. 32 entries allow for 1023 owner_ids */ > > > > -#define ACPI_NUM_OWNERID_MASKS 8 > > +#define ACPI_NUM_OWNERID_MASKS 32 > > > > > > > /*********************************************************************** > ** > > ***** > > * > > Index: linux/include/acpi/aclocal.h > > =================================================================== > > --- linux.orig/include/acpi/aclocal.h 2007-01-25 11:27:25.585268807 - > > 0600 > > +++ linux/include/acpi/aclocal.h 2007-01-26 13:20:06.148115848 > -0600 > > @@ -122,8 +122,8 @@ static char *acpi_gbl_mutex_names[ACPI_N > > > > /* Owner IDs are used to track namespace nodes for selective deletion > */ > > > > -typedef u8 acpi_owner_id; > > -#define ACPI_OWNER_ID_MAX 0xFF > > +typedef u16 acpi_owner_id; > > +#define ACPI_OWNER_ID_MAX 0x3FF > > > > /* This Thread ID means that the mutex is not in use (unlocked) */ > > > > - > > To unsubscribe from this list: send the line "unsubscribe linux-acpi" > in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
