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[73.69.118.222]) by smtp.gmail.com with ESMTPSA id p77sm4042514qke.6.2019.10.04.11.52.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Oct 2019 11:52:42 -0700 (PDT) From: Pavel Tatashin To: pasha.tatashin@soleen.com, jmorris@namei.org, sashal@kernel.org, ebiederm@xmission.com, kexec@lists.infradead.org, linux-kernel@vger.kernel.org, corbet@lwn.net, catalin.marinas@arm.com, will@kernel.org, linux-arm-kernel@lists.infradead.org, marc.zyngier@arm.com, james.morse@arm.com, vladimir.murzin@arm.com, matthias.bgg@gmail.com, bhsharma@redhat.com, linux-mm@kvack.org, mark.rutland@arm.com Subject: [PATCH v6 04/17] arm64: hibernate: use get_safe_page directly Date: Fri, 4 Oct 2019 14:52:21 -0400 Message-Id: <20191004185234.31471-5-pasha.tatashin@soleen.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191004185234.31471-1-pasha.tatashin@soleen.com> References: <20191004185234.31471-1-pasha.tatashin@soleen.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: create_safe_exec_page() uses hibernate's allocator to create a set of pag= e table to map a single page that will contain the relocation code. Remove the allocator related arguments, and use get_safe_page directly, a= s it is done in other local functions in this file to simplify function prototype. Removing this function pointer makes it easier to refactor the code later= . Signed-off-by: Pavel Tatashin Reviewed-by: Matthias Brugger --- arch/arm64/kernel/hibernate.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/arch/arm64/kernel/hibernate.c b/arch/arm64/kernel/hibernate.= c index ef46ce66d7e8..34297716643f 100644 --- a/arch/arm64/kernel/hibernate.c +++ b/arch/arm64/kernel/hibernate.c @@ -196,9 +196,7 @@ EXPORT_SYMBOL(arch_hibernation_header_restore); */ static int create_safe_exec_page(void *src_start, size_t length, unsigned long dst_addr, - phys_addr_t *phys_dst_addr, - void *(*allocator)(gfp_t mask), - gfp_t mask) + phys_addr_t *phys_dst_addr) { int rc =3D 0; pgd_t *trans_pgd; @@ -206,7 +204,7 @@ static int create_safe_exec_page(void *src_start, siz= e_t length, pud_t *pudp; pmd_t *pmdp; pte_t *ptep; - unsigned long dst =3D (unsigned long)allocator(mask); + unsigned long dst =3D get_safe_page(GFP_ATOMIC); =20 if (!dst) { rc =3D -ENOMEM; @@ -216,7 +214,7 @@ static int create_safe_exec_page(void *src_start, siz= e_t length, memcpy((void *)dst, src_start, length); __flush_icache_range(dst, dst + length); =20 - trans_pgd =3D allocator(mask); + trans_pgd =3D (void *)get_safe_page(GFP_ATOMIC); if (!trans_pgd) { rc =3D -ENOMEM; goto out; @@ -224,7 +222,7 @@ static int create_safe_exec_page(void *src_start, siz= e_t length, =20 pgdp =3D pgd_offset_raw(trans_pgd, dst_addr); if (pgd_none(READ_ONCE(*pgdp))) { - pudp =3D allocator(mask); + pudp =3D (void *)get_safe_page(GFP_ATOMIC); if (!pudp) { rc =3D -ENOMEM; goto out; @@ -234,7 +232,7 @@ static int create_safe_exec_page(void *src_start, siz= e_t length, =20 pudp =3D pud_offset(pgdp, dst_addr); if (pud_none(READ_ONCE(*pudp))) { - pmdp =3D allocator(mask); + pmdp =3D (void *)get_safe_page(GFP_ATOMIC); if (!pmdp) { rc =3D -ENOMEM; goto out; @@ -244,7 +242,7 @@ static int create_safe_exec_page(void *src_start, siz= e_t length, =20 pmdp =3D pmd_offset(pudp, dst_addr); if (pmd_none(READ_ONCE(*pmdp))) { - ptep =3D allocator(mask); + ptep =3D (void *)get_safe_page(GFP_ATOMIC); if (!ptep) { rc =3D -ENOMEM; goto out; @@ -530,8 +528,7 @@ int swsusp_arch_resume(void) */ rc =3D create_safe_exec_page(__hibernate_exit_text_start, exit_size, (unsigned long)hibernate_exit, - &phys_hibernate_exit, - (void *)get_safe_page, GFP_ATOMIC); + &phys_hibernate_exit); if (rc) { pr_err("Failed to create safe executable page for hibernate_exit code.= \n"); goto out; --=20 2.23.0