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| author | Reinette Chatre <reinette.chatre@intel.com> | 2018-06-23 01:42:27 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2018-06-24 16:35:48 +0300 |
| commit | 746e08590b864cf730d7bd23394e2d3fbb0f22b6 (patch) | |
| tree | 082202481a7fdd26b6f9724345cbfb1538332437 /arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | |
| parent | 443810fe6160542c78e24c66047edd7a3cc830c6 (diff) | |
| download | linux-746e08590b864cf730d7bd23394e2d3fbb0f22b6.tar.xz | |
x86/intel_rdt: Create character device exposing pseudo-locked region
After a pseudo-locked region is created it needs to be made
available to user space for usage.
A character device supporting mmap() is created for each pseudo-locked
region. A user space application can now use mmap() system call to map
pseudo-locked region into its virtual address space.
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fenghua.yu@intel.com
Cc: tony.luck@intel.com
Cc: vikas.shivappa@linux.intel.com
Cc: gavin.hindman@intel.com
Cc: jithu.joseph@intel.com
Cc: dave.hansen@intel.com
Cc: hpa@zytor.com
Link: https://lkml.kernel.org/r/fccbb9b20f07655ab0a4df9fa1c1babc0288aea0.1529706536.git.reinette.chatre@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/intel_rdt_rdtgroup.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c index bc52c593a87c..7b4a09d81a30 100644 --- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c +++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c @@ -2067,6 +2067,7 @@ static void rdt_kill_sb(struct super_block *sb) reset_all_ctrls(r); cdp_disable_all(); rmdir_all_sub(); + rdt_pseudo_lock_release(); rdtgroup_default.mode = RDT_MODE_SHAREABLE; static_branch_disable_cpuslocked(&rdt_alloc_enable_key); static_branch_disable_cpuslocked(&rdt_mon_enable_key); |