diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-22 10:20:04 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-02-22 10:20:04 -0800 |
commit | ff47d8c05019d6e7753cef270d6399cb5a33be57 (patch) | |
tree | 78eec48c53554902062f9a06b57a700d7671330e /arch/s390/kernel/idle.c | |
parent | 3051bf36c25d5153051704291782f8d44e744d36 (diff) | |
parent | d24b98e3a9c66b16ed029e1b2bcdf3c90e9d82d9 (diff) | |
download | linux-ff47d8c05019d6e7753cef270d6399cb5a33be57.tar.bz2 |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky:
- New entropy generation for the pseudo random number generator.
- Early boot printk output via sclp to help debug crashes on boot. This
needs to be enabled with a kernel parameter.
- Add proper no-execute support with a bit in the page table entry.
- Bug fixes and cleanups.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (65 commits)
s390/syscall: fix single stepped system calls
s390/zcrypt: make ap_bus explicitly non-modular
s390/zcrypt: Removed unneeded debug feature directory creation.
s390: add missing "do {} while (0)" loop constructs to multiline macros
s390/mm: add cond_resched call to kernel page table dumper
s390: get rid of MACHINE_HAS_PFMF and MACHINE_HAS_HPAGE
s390/mm: make memory_block_size_bytes available for !MEMORY_HOTPLUG
s390: replace ACCESS_ONCE with READ_ONCE
s390: Audit and remove any remaining unnecessary uses of module.h
s390: mm: Audit and remove any unnecessary uses of module.h
s390: kernel: Audit and remove any unnecessary uses of module.h
s390/kdump: Use "LINUX" ELF note name instead of "CORE"
s390: add no-execute support
s390: report new vector facilities
s390: use correct input data address for setup_randomness
s390/sclp: get rid of common response code handling
s390/sclp: don't add new lines to each printed string
s390/sclp: make early sclp code readable
s390/sclp: disable early sclp code as soon as the base sclp driver is active
s390/sclp: move early printk code to drivers
...
Diffstat (limited to 'arch/s390/kernel/idle.c')
-rw-r--r-- | arch/s390/kernel/idle.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c index d3bf69ef42cf..fb07a70820af 100644 --- a/arch/s390/kernel/idle.c +++ b/arch/s390/kernel/idle.c @@ -57,8 +57,8 @@ static ssize_t show_idle_count(struct device *dev, do { seq = read_seqcount_begin(&idle->seqcount); - idle_count = ACCESS_ONCE(idle->idle_count); - if (ACCESS_ONCE(idle->clock_idle_enter)) + idle_count = READ_ONCE(idle->idle_count); + if (READ_ONCE(idle->clock_idle_enter)) idle_count++; } while (read_seqcount_retry(&idle->seqcount, seq)); return sprintf(buf, "%llu\n", idle_count); @@ -75,9 +75,9 @@ static ssize_t show_idle_time(struct device *dev, do { now = get_tod_clock(); seq = read_seqcount_begin(&idle->seqcount); - idle_time = ACCESS_ONCE(idle->idle_time); - idle_enter = ACCESS_ONCE(idle->clock_idle_enter); - idle_exit = ACCESS_ONCE(idle->clock_idle_exit); + idle_time = READ_ONCE(idle->idle_time); + idle_enter = READ_ONCE(idle->clock_idle_enter); + idle_exit = READ_ONCE(idle->clock_idle_exit); } while (read_seqcount_retry(&idle->seqcount, seq)); idle_time += idle_enter ? ((idle_exit ? : now) - idle_enter) : 0; return sprintf(buf, "%llu\n", idle_time >> 12); @@ -93,8 +93,8 @@ u64 arch_cpu_idle_time(int cpu) do { now = get_tod_clock(); seq = read_seqcount_begin(&idle->seqcount); - idle_enter = ACCESS_ONCE(idle->clock_idle_enter); - idle_exit = ACCESS_ONCE(idle->clock_idle_exit); + idle_enter = READ_ONCE(idle->clock_idle_enter); + idle_exit = READ_ONCE(idle->clock_idle_exit); } while (read_seqcount_retry(&idle->seqcount, seq)); return cputime_to_nsecs(idle_enter ? ((idle_exit ?: now) - idle_enter) : 0); |