From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932664AbcIMWKL (ORCPT ); Tue, 13 Sep 2016 18:10:11 -0400 Received: from terminus.zytor.com ([198.137.202.10]:51952 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932578AbcIMWKH (ORCPT ); Tue, 13 Sep 2016 18:10:07 -0400 Date: Tue, 13 Sep 2016 15:08:58 -0700 From: tip-bot for Masahiro Yamada Message-ID: Cc: linux-kernel@vger.kernel.org, sivanich@sgi.com, daniel@numascale.com, athorlton@sgi.com, travis@sgi.com, bp@suse.de, matt@codeblueprint.co.uk, toshi.kani@hpe.com, yamada.masahiro@socionext.com, sp@numascale.com, paul.gortmaker@windriver.com, peterz@infradead.org, dvlasenk@redhat.com, mingo@kernel.org, weijg.fnst@cn.fujitsu.com, torvalds@linux-foundation.org, tglx@linutronix.de, abanman@sgi.com, hpa@zytor.com, nzimmer@sgi.com Reply-To: torvalds@linux-foundation.org, weijg.fnst@cn.fujitsu.com, mingo@kernel.org, nzimmer@sgi.com, abanman@sgi.com, hpa@zytor.com, tglx@linutronix.de, dvlasenk@redhat.com, peterz@infradead.org, sp@numascale.com, yamada.masahiro@socionext.com, toshi.kani@hpe.com, matt@codeblueprint.co.uk, paul.gortmaker@windriver.com, daniel@numascale.com, athorlton@sgi.com, sivanich@sgi.com, linux-kernel@vger.kernel.org, bp@suse.de, travis@sgi.com In-Reply-To: <1473573502-27954-1-git-send-email-yamada.masahiro@socionext.com> References: <1473573502-27954-1-git-send-email-yamada.masahiro@socionext.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/cleanups] x86: Clean up various simple wrapper functions Git-Commit-ID: f148b41e8b2e114d0aba023adf326b03368f3246 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: f148b41e8b2e114d0aba023adf326b03368f3246 Gitweb: http://git.kernel.org/tip/f148b41e8b2e114d0aba023adf326b03368f3246 Author: Masahiro Yamada AuthorDate: Sun, 11 Sep 2016 14:58:21 +0900 Committer: Ingo Molnar CommitDate: Tue, 13 Sep 2016 20:42:58 +0200 x86: Clean up various simple wrapper functions Remove unneeded variables and assignments. While we are here, let's fix the following as well: - Remove unnecessary parentheses - Remove unnecessary unsigned-suffix 'U' from constant values - Reword the comment in set_apic_id() (suggested by Thomas Gleixner) Signed-off-by: Masahiro Yamada Cc: Alex Thorlton Cc: Andrew Banman Cc: Borislav Petkov Cc: Daniel J Blueman Cc: Denys Vlasenko Cc: Dimitri Sivanich Cc: Linus Torvalds Cc: Matt Fleming Cc: Mike Travis Cc: Nathan Zimmer Cc: Paul Gortmaker Cc: Peter Zijlstra Cc: Steffen Persvold Cc: Thomas Gleixner Cc: Toshi Kani Cc: Wei Jiangang Link: http://lkml.kernel.org/r/1473573502-27954-1-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/apic/apic_flat_64.c | 16 +++------------- arch/x86/kernel/apic/apic_numachip.c | 5 +---- arch/x86/kernel/apic/x2apic_uv_x.c | 7 ++----- arch/x86/mm/pat_rbtree.c | 4 +--- arch/x86/platform/uv/bios_uv.c | 7 ++----- arch/x86/platform/uv/tlb_uv.c | 6 +----- 6 files changed, 10 insertions(+), 35 deletions(-) diff --git a/arch/x86/kernel/apic/apic_flat_64.c b/arch/x86/kernel/apic/apic_flat_64.c index 5b2ae10..70796f5 100644 --- a/arch/x86/kernel/apic/apic_flat_64.c +++ b/arch/x86/kernel/apic/apic_flat_64.c @@ -116,27 +116,17 @@ static void flat_send_IPI_all(int vector) static unsigned int flat_get_apic_id(unsigned long x) { - unsigned int id; - - id = (((x)>>24) & 0xFFu); - - return id; + return (x >> 24) & 0xFF; } static unsigned long set_apic_id(unsigned int id) { - unsigned long x; - - x = ((id & 0xFFu)<<24); - return x; + return (id & 0xFF) << 24; } static unsigned int read_xapic_id(void) { - unsigned int id; - - id = flat_get_apic_id(apic_read(APIC_ID)); - return id; + return flat_get_apic_id(apic_read(APIC_ID)); } static int flat_apic_id_registered(void) diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c index 714d4fd..e08fe2c 100644 --- a/arch/x86/kernel/apic/apic_numachip.c +++ b/arch/x86/kernel/apic/apic_numachip.c @@ -40,10 +40,7 @@ static unsigned int numachip1_get_apic_id(unsigned long x) static unsigned long numachip1_set_apic_id(unsigned int id) { - unsigned long x; - - x = ((id & 0xffU) << 24); - return x; + return (id & 0xff) << 24; } static unsigned int numachip2_get_apic_id(unsigned long x) diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c index cb0673c..0f8cd92 100644 --- a/arch/x86/kernel/apic/x2apic_uv_x.c +++ b/arch/x86/kernel/apic/x2apic_uv_x.c @@ -533,11 +533,8 @@ static unsigned int x2apic_get_apic_id(unsigned long x) static unsigned long set_apic_id(unsigned int id) { - unsigned long x; - - /* maskout x2apic_extra_bits ? */ - x = id; - return x; + /* CHECKME: Do we need to mask out the xapic extra bits? */ + return id; } static unsigned int uv_read_apic_id(void) diff --git a/arch/x86/mm/pat_rbtree.c b/arch/x86/mm/pat_rbtree.c index de391b7..159b52c 100644 --- a/arch/x86/mm/pat_rbtree.c +++ b/arch/x86/mm/pat_rbtree.c @@ -254,9 +254,7 @@ struct memtype *rbt_memtype_erase(u64 start, u64 end) struct memtype *rbt_memtype_lookup(u64 addr) { - struct memtype *data; - data = memtype_rb_lowest_match(&memtype_rbroot, addr, addr + PAGE_SIZE); - return data; + return memtype_rb_lowest_match(&memtype_rbroot, addr, addr + PAGE_SIZE); } #if defined(CONFIG_DEBUG_FS) diff --git a/arch/x86/platform/uv/bios_uv.c b/arch/x86/platform/uv/bios_uv.c index 23f2f3e..b4d5e95 100644 --- a/arch/x86/platform/uv/bios_uv.c +++ b/arch/x86/platform/uv/bios_uv.c @@ -149,11 +149,8 @@ EXPORT_SYMBOL_GPL(uv_bios_change_memprotect); s64 uv_bios_reserved_page_pa(u64 buf, u64 *cookie, u64 *addr, u64 *len) { - s64 ret; - - ret = uv_bios_call_irqsave(UV_BIOS_GET_PARTITION_ADDR, (u64)cookie, - (u64)addr, buf, (u64)len, 0); - return ret; + return uv_bios_call_irqsave(UV_BIOS_GET_PARTITION_ADDR, (u64)cookie, + (u64)addr, buf, (u64)len, 0); } EXPORT_SYMBOL_GPL(uv_bios_reserved_page_pa); diff --git a/arch/x86/platform/uv/tlb_uv.c b/arch/x86/platform/uv/tlb_uv.c index fdb4d42..276e1b7 100644 --- a/arch/x86/platform/uv/tlb_uv.c +++ b/arch/x86/platform/uv/tlb_uv.c @@ -580,11 +580,7 @@ static int uv1_wait_completion(struct bau_desc *bau_desc, */ static unsigned long uv2_3_read_status(unsigned long offset, int rshft, int desc) { - unsigned long descriptor_status; - - descriptor_status = - ((read_lmmr(offset) >> rshft) & UV_ACT_STATUS_MASK) << 1; - return descriptor_status; + return ((read_lmmr(offset) >> rshft) & UV_ACT_STATUS_MASK) << 1; } /*