diff options
author | Frederic Weisbecker <fweisbec@gmail.com> | 2012-11-13 08:20:55 -0500 |
---|---|---|
committer | Frederic Weisbecker <fweisbec@gmail.com> | 2013-01-27 13:23:31 -0500 |
commit | 6fac4829ce0ef9b7f24369086ce5f0e9f38d37bc (patch) | |
tree | 44da712b66d778c2fd701f9c96b00e108530e1a9 /arch/alpha | |
parent | 3f4724ea85b7d9055a9976fa8f30b471bdfbca93 (diff) |
cputime: Use accessors to read task cputime stats
This is in preparation for the full dynticks feature. While
remotely reading the cputime of a task running in a full
dynticks CPU, we'll need to do some extra-computation. This
way we can account the time it spent tickless in userspace
since its last cputime snapshot.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Li Zhong <zhong@linux.vnet.ibm.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/alpha')
-rw-r--r-- | arch/alpha/kernel/osf_sys.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c index 14db93e4c8a8..dbc1760f418b 100644 --- a/arch/alpha/kernel/osf_sys.c +++ b/arch/alpha/kernel/osf_sys.c | |||
@@ -1139,6 +1139,7 @@ struct rusage32 { | |||
1139 | SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) | 1139 | SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) |
1140 | { | 1140 | { |
1141 | struct rusage32 r; | 1141 | struct rusage32 r; |
1142 | cputime_t utime, stime; | ||
1142 | 1143 | ||
1143 | if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) | 1144 | if (who != RUSAGE_SELF && who != RUSAGE_CHILDREN) |
1144 | return -EINVAL; | 1145 | return -EINVAL; |
@@ -1146,8 +1147,9 @@ SYSCALL_DEFINE2(osf_getrusage, int, who, struct rusage32 __user *, ru) | |||
1146 | memset(&r, 0, sizeof(r)); | 1147 | memset(&r, 0, sizeof(r)); |
1147 | switch (who) { | 1148 | switch (who) { |
1148 | case RUSAGE_SELF: | 1149 | case RUSAGE_SELF: |
1149 | jiffies_to_timeval32(current->utime, &r.ru_utime); | 1150 | task_cputime(current, &utime, &stime); |
1150 | jiffies_to_timeval32(current->stime, &r.ru_stime); | 1151 | jiffies_to_timeval32(utime, &r.ru_utime); |
1152 | jiffies_to_timeval32(stime, &r.ru_stime); | ||
1151 | r.ru_minflt = current->min_flt; | 1153 | r.ru_minflt = current->min_flt; |
1152 | r.ru_majflt = current->maj_flt; | 1154 | r.ru_majflt = current->maj_flt; |
1153 | break; | 1155 | break; |