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| author |   Andy Lutomirski <luto@amacapital.net> | 2014-05-05 12:19:32 -0700 |
|---|---|---|
| committer |   H. Peter Anvin <hpa@linux.intel.com> | 2014-05-05 13:18:40 -0700 |
| commit | 3d7ee969bffcc984c8aeaffc6ac6816fd929ace1 (patch) | |
| tree | 7f365d4f40885740ac0007d030f890ec0b69fb85 /arch/x86/vdso | |
| parent | x86, mm: Ensure correct alignment of the fixmap (diff) | |
| download | linux-dev-3d7ee969bffcc984c8aeaffc6ac6816fd929ace1.tar.xz linux-dev-3d7ee969bffcc984c8aeaffc6ac6816fd929ace1.zip | |
x86, vdso: Clean up 32-bit vs 64-bit vdso params
Rather than using 'vdso_enabled' and an awful #define, just call the
parameters vdso32_enabled and vdso64_enabled.
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Link: http://lkml.kernel.org/r/87913de56bdcbae3d93917938302fc369b05caee.1399317206.git.luto@amacapital.net
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'arch/x86/vdso')
| -rw-r--r-- | arch/x86/vdso/vdso32-setup.c | 19 | ||||
| -rw-r--r-- | arch/x86/vdso/vma.c | 6 |
2 files changed, 11 insertions, 14 deletions
diff --git a/arch/x86/vdso/vdso32-setup.c b/arch/x86/vdso/vdso32-setup.c index 00348980a3a6..5a657d93c6e0 100644 --- a/arch/x86/vdso/vdso32-setup.c +++ b/arch/x86/vdso/vdso32-setup.c @@ -37,7 +37,6 @@ #endif #ifdef CONFIG_X86_64 -#define vdso_enabled sysctl_vsyscall32 #define arch_setup_additional_pages syscall32_setup_pages #endif @@ -45,13 +44,13 @@ * Should the kernel map a VDSO page into processes and pass its * address down to glibc upon exec()? */ -unsigned int __read_mostly vdso_enabled = VDSO_DEFAULT; +unsigned int __read_mostly vdso32_enabled = VDSO_DEFAULT; -static int __init vdso_setup(char *s) +static int __init vdso32_setup(char *s) { - vdso_enabled = simple_strtoul(s, NULL, 0); + vdso32_enabled = simple_strtoul(s, NULL, 0); - if (vdso_enabled > 1) + if (vdso32_enabled > 1) pr_warn("vdso32 values other than 0 and 1 are no longer allowed; vdso disabled\n"); return 1; @@ -62,12 +61,10 @@ static int __init vdso_setup(char *s) * behavior on both 64-bit and 32-bit kernels. * On 32-bit kernels, vdso=[012] means the same thing. */ -__setup("vdso32=", vdso_setup); +__setup("vdso32=", vdso32_setup); #ifdef CONFIG_X86_32 -__setup_param("vdso=", vdso32_setup, vdso_setup, 0); - -EXPORT_SYMBOL_GPL(vdso_enabled); +__setup_param("vdso=", vdso_setup, vdso32_setup, 0); #endif static struct page **vdso32_pages; @@ -160,7 +157,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) return x32_setup_additional_pages(bprm, uses_interp); #endif - if (vdso_enabled != 1) /* Other values all mean "disabled" */ + if (vdso32_enabled != 1) /* Other values all mean "disabled" */ return 0; down_write(&mm->mmap_sem); @@ -244,7 +241,7 @@ subsys_initcall(sysenter_setup); static struct ctl_table abi_table2[] = { { .procname = "vsyscall32", - .data = &sysctl_vsyscall32, + .data = &vdso32_enabled, .maxlen = sizeof(int), .mode = 0644, .proc_handler = proc_dointvec diff --git a/arch/x86/vdso/vma.c b/arch/x86/vdso/vma.c index 1ad102613127..8b790398ed1d 100644 --- a/arch/x86/vdso/vma.c +++ b/arch/x86/vdso/vma.c @@ -17,7 +17,7 @@ #include <asm/page.h> #if defined(CONFIG_X86_64) -unsigned int __read_mostly vdso_enabled = 1; +unsigned int __read_mostly vdso64_enabled = 1; DECLARE_VDSO_IMAGE(vdso); extern unsigned short vdso_sync_cpuid; @@ -160,7 +160,7 @@ static int setup_additional_pages(struct linux_binprm *bprm, unsigned long addr; int ret; - if (!vdso_enabled) + if (!vdso64_enabled) return 0; down_write(&mm->mmap_sem); @@ -203,7 +203,7 @@ int x32_setup_additional_pages(struct linux_binprm *bprm, int uses_interp) static __init int vdso_setup(char *s) { - vdso_enabled = simple_strtoul(s, NULL, 0); + vdso64_enabled = simple_strtoul(s, NULL, 0); return 0; } __setup("vdso=", vdso_setup); |