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| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2015-02-19 12:22:02 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-07-22 09:58:02 +0200 |
| commit | 8f00b3e28f73e712a2f82a15f66acd852f60e3ba (patch) | |
| tree | 52fe46682c01970f8750a32dead49d7861b91e6c /arch/s390/kernel/processor.c | |
| parent | cpufeature: correctly annotate the module init function (diff) | |
| download | linux-8f00b3e28f73e712a2f82a15f66acd852f60e3ba.tar.xz linux-8f00b3e28f73e712a2f82a15f66acd852f60e3ba.zip | |
s390/module: enable generic CPU feature modalias using s390 ELF hwcaps
Add support for the generic CPU feature modalias implementation that wires
up optional CPU features to udev-based module autoprobing.
The <asm/cpufeature.h> file provides definitions to map CPU features to
s390 ELF hardware capabilities.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/processor.c')
| -rw-r--r-- | arch/s390/kernel/processor.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index dc488e13b7e3..e6e077ae3990 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -41,6 +41,15 @@ void cpu_init(void) } /* + * cpu_have_feature - Test CPU features on module initialization + */ +int cpu_have_feature(unsigned int num) +{ + return elf_hwcap & (1UL << num); +} +EXPORT_SYMBOL(cpu_have_feature); + +/* * show_cpuinfo - Get information on one CPU for use by procfs. */ static int show_cpuinfo(struct seq_file *m, void *v) |