diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-06 02:46:42 +0200 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2014-08-06 02:46:42 +0200 |
commit | e7fda6c4c3c1a7d6996dd75fd84670fa0b5d448f (patch) | |
tree | daa51c16462c318b890acf7f01fba5827275dd74 /drivers/hwmon | |
parent | Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kerne... (diff) | |
parent | timekeeping: Fixup typo in update_vsyscall_old definition (diff) | |
download | linux-e7fda6c4c3c1a7d6996dd75fd84670fa0b5d448f.tar.xz linux-e7fda6c4c3c1a7d6996dd75fd84670fa0b5d448f.zip |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer and time updates from Thomas Gleixner:
"A rather large update of timers, timekeeping & co
- Core timekeeping code is year-2038 safe now for 32bit machines.
Now we just need to fix all in kernel users and the gazillion of
user space interfaces which rely on timespec/timeval :)
- Better cache layout for the timekeeping internal data structures.
- Proper nanosecond based interfaces for in kernel users.
- Tree wide cleanup of code which wants nanoseconds but does hoops
and loops to convert back and forth from timespecs. Some of it
definitely belongs into the ugly code museum.
- Consolidation of the timekeeping interface zoo.
- A fast NMI safe accessor to clock monotonic for tracing. This is a
long standing request to support correlated user/kernel space
traces. With proper NTP frequency correction it's also suitable
for correlation of traces accross separate machines.
- Checkpoint/restart support for timerfd.
- A few NOHZ[_FULL] improvements in the [hr]timer code.
- Code move from kernel to kernel/time of all time* related code.
- New clocksource/event drivers from the ARM universe. I'm really
impressed that despite an architected timer in the newer chips SoC
manufacturers insist on inventing new and differently broken SoC
specific timers.
[ Ed. "Impressed"? I don't think that word means what you think it means ]
- Another round of code move from arch to drivers. Looks like most
of the legacy mess in ARM regarding timers is sorted out except for
a few obnoxious strongholds.
- The usual updates and fixlets all over the place"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (114 commits)
timekeeping: Fixup typo in update_vsyscall_old definition
clocksource: document some basic timekeeping concepts
timekeeping: Use cached ntp_tick_length when accumulating error
timekeeping: Rework frequency adjustments to work better w/ nohz
timekeeping: Minor fixup for timespec64->timespec assignment
ftrace: Provide trace clocks monotonic
timekeeping: Provide fast and NMI safe access to CLOCK_MONOTONIC
seqcount: Add raw_write_seqcount_latch()
seqcount: Provide raw_read_seqcount()
timekeeping: Use tk_read_base as argument for timekeeping_get_ns()
timekeeping: Create struct tk_read_base and use it in struct timekeeper
timekeeping: Restructure the timekeeper some more
clocksource: Get rid of cycle_last
clocksource: Move cycle_last validation to core code
clocksource: Make delta calculation a function
wireless: ath9k: Get rid of timespec conversions
drm: vmwgfx: Use nsec based interfaces
drm: i915: Use nsec based interfaces
timekeeping: Provide ktime_get_raw()
hangcheck-timer: Use ktime_get_ns()
...
Diffstat (limited to 'drivers/hwmon')
-rw-r--r-- | drivers/hwmon/ibmaem.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/hwmon/ibmaem.c b/drivers/hwmon/ibmaem.c index 632f1dc0fe1f..7a8a6fbf11ff 100644 --- a/drivers/hwmon/ibmaem.c +++ b/drivers/hwmon/ibmaem.c @@ -842,11 +842,10 @@ static ssize_t aem_show_power(struct device *dev, struct aem_data *data = dev_get_drvdata(dev); u64 before, after, delta, time; signed long leftover; - struct timespec b, a; mutex_lock(&data->lock); update_aem_energy_one(data, attr->index); - getnstimeofday(&b); + time = ktime_get_ns(); before = data->energy[attr->index]; leftover = schedule_timeout_interruptible( @@ -858,11 +857,10 @@ static ssize_t aem_show_power(struct device *dev, } update_aem_energy_one(data, attr->index); - getnstimeofday(&a); + time = ktime_get_ns() - time; after = data->energy[attr->index]; mutex_unlock(&data->lock); - time = timespec_to_ns(&a) - timespec_to_ns(&b); delta = (after - before) * UJ_PER_MJ; return sprintf(buf, "%llu\n", |