Ingo Molnar f9748fa045 x86/boot/e820: Simplify the e820__update_table() interface ... The e820__update_table() parameters are pretty complex: arch/x86/include/asm/e820/api.h:extern int e820__update_table(struct e820_entry *biosmap, int max_nr_map, u32 *pnr_map); But 90% of the usage is trivial: arch/x86/kernel/e820.c: if (e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries)) arch/x86/kernel/e820.c: e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries); arch/x86/kernel/e820.c: e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries); arch/x86/kernel/e820.c: if (e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries) < 0) arch/x86/kernel/e820.c: e820__update_table(boot_params.e820_table, ARRAY_SIZE(boot_params.e820_table), &new_nr); arch/x86/kernel/early-quirks.c: e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries); arch/x86/kernel/setup.c: e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries); arch/x86/kernel/setup.c: e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries); arch/x86/platform/efi/efi.c: e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries); arch/x86/xen/setup.c: e820__update_table(xen_e820_table.entries, ARRAY_SIZE(xen_e820_table.entries), arch/x86/xen/setup.c: e820__update_table(e820_table->entries, ARRAY_SIZE(e820_table->entries), &e820_table->nr_entries); arch/x86/xen/setup.c: e820__update_table(xen_e820_table.entries, ARRAY_SIZE(xen_e820_table.entries), as it only uses an exiting struct e820_table's entries array, its size and its current number of entries as input and output arguments. Only one use is non-trivial: arch/x86/kernel/e820.c: e820__update_table(boot_params.e820_table, ARRAY_SIZE(boot_params.e820_table), &new_nr); ... which call updates the E820 table in the zeropage in-situ, and the layout there does not match that of 'struct e820_table' (in particular nr_entries is at a different offset, hardcoded by the boot protocol). Simplify all this by introducing a low level __e820__update_table() API that the zeropage update call can use, and simplifying the main e820__update_table() call signature down to: int e820__update_table(struct e820_table *table); This visibly simplifies all the call sites: arch/x86/include/asm/e820/api.h:extern int e820__update_table(struct e820_table *table); arch/x86/include/asm/e820/types.h: * call to e820__update_table() to remove duplicates. The allowance arch/x86/kernel/e820.c: * The return value from e820__update_table() is zero if it arch/x86/kernel/e820.c:int __init e820__update_table(struct e820_table *table) arch/x86/kernel/e820.c: if (e820__update_table(e820_table)) arch/x86/kernel/e820.c: e820__update_table(e820_table_firmware); arch/x86/kernel/e820.c: e820__update_table(e820_table); arch/x86/kernel/e820.c: e820__update_table(e820_table); arch/x86/kernel/e820.c: if (e820__update_table(e820_table) < 0) arch/x86/kernel/early-quirks.c: e820__update_table(e820_table); arch/x86/kernel/setup.c: e820__update_table(e820_table); arch/x86/kernel/setup.c: e820__update_table(e820_table); arch/x86/platform/efi/efi.c: e820__update_table(e820_table); arch/x86/xen/setup.c: e820__update_table(&xen_e820_table); arch/x86/xen/setup.c: e820__update_table(e820_table); arch/x86/xen/setup.c: e820__update_table(&xen_e820_table); No change in functionality. Cc: Alex Thorlton <athorlton@sgi.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Huang, Ying <ying.huang@intel.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Juergen Gross <jgross@suse.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Tejun Heo <tj@kernel.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Wei Yang <richard.weiyang@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2017-01-28 22:55:24 +01:00
..
atom	x86/cpu: Rename Merrifield2 to Moorefield	2016-09-08 08:13:08 +02:00
ce4100	x86/init: Remove i8042_detect() from platform ops	2016-12-19 11:34:15 +01:00
efi	x86/boot/e820: Simplify the e820__update_table() interface	2017-01-28 22:55:24 +01:00
geode	x86/platform: Make platform/geode/net5501.c explicitly non-modular	2016-02-16 09:11:09 +01:00
goldfish	goldfish: platform device for x86	2013-01-21 12:09:19 -08:00
intel	x86/platform/iosf_mbi: Add Intel Tangier PCI id	2015-07-16 17:48:48 +02:00
intel-mid	x86/platform/intel-mid: Rename 'spidev' to 'mrfld_spidev'	2017-01-05 09:03:29 +01:00
intel-quark	x86/platform/intel/quark: Add printf attribute to imr_self_test_result()	2016-12-20 09:37:24 +01:00
iris	x86: platform: iris: drop owner assignment from platform_drivers	2014-10-20 16:20:15 +02:00
olpc	x86/platform/olpc: Fix resume handler build warning	2016-11-28 07:46:03 +01:00
scx200	X86: drivers: remove __dev* attributes.	2013-01-03 15:57:04 -08:00
sfi	x86: Cleanup irq_domain ops	2015-04-24 15:36:55 +02:00
ts5500	x86/platform: Delete extraneous MODULE_* tags fromm ts5500	2016-07-16 22:41:00 +02:00
uv	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
Makefile	platform/x86: mlx-platform: Move module from arch/x86	2016-12-16 23:30:24 +02:00