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authorFrederic Weisbecker <fweisbec@gmail.com>2017-01-31 06:09:23 +0300
committerIngo Molnar <mingo@kernel.org>2017-02-01 11:13:49 +0300
commit5613fda9a503cd6137b120298902a34a1386b2c1 (patch)
tree5431dd50508a6cfa052a3b9966e58842b430804d /fs/binfmt_elf.c
parenta1cecf2ba78e0a6de00ff99df34b662728535aa5 (diff)
downloadlinux-5613fda9a503cd6137b120298902a34a1386b2c1.tar.xz
sched/cputime: Convert task/group cputime to nsecs
Now that most cputime readers use the transition API which return the task cputime in old style cputime_t, we can safely store the cputime in nsecs. This will eventually make cputime statistics less opaque and more granular. Back and forth convertions between cputime_t and nsecs in order to deal with cputime_t random granularity won't be needed anymore. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Rik van Riel <riel@redhat.com> Cc: Stanislaw Gruszka <sgruszka@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Tony Luck <tony.luck@intel.com> Cc: Wanpeng Li <wanpeng.li@hotmail.com> Link: http://lkml.kernel.org/r/1485832191-26889-8-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'fs/binfmt_elf.c')
-rw-r--r--fs/binfmt_elf.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 68b915650cae..6d451936a858 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1411,6 +1411,8 @@ static void fill_note(struct memelfnote *note, const char *name, int type,
static void fill_prstatus(struct elf_prstatus *prstatus,
struct task_struct *p, long signr)
{
+ struct timeval tv;
+
prstatus->pr_info.si_signo = prstatus->pr_cursig = signr;
prstatus->pr_sigpend = p->pending.signal.sig[0];
prstatus->pr_sighold = p->blocked.sig[0];
@@ -1437,8 +1439,13 @@ static void fill_prstatus(struct elf_prstatus *prstatus,
cputime_to_timeval(utime, &prstatus->pr_utime);
cputime_to_timeval(stime, &prstatus->pr_stime);
}
- cputime_to_timeval(p->signal->cutime, &prstatus->pr_cutime);
- cputime_to_timeval(p->signal->cstime, &prstatus->pr_cstime);
+ tv = ns_to_timeval(p->signal->cutime);
+ prstatus->pr_cutime.tv_sec = tv.tv_sec;
+ prstatus->pr_cutime.tv_usec = tv.tv_usec;
+
+ tv = ns_to_timeval(p->signal->cstime);
+ prstatus->pr_cstime.tv_sec = tv.tv_sec;
+ prstatus->pr_cstime.tv_usec = tv.tv_usec;
}
static int fill_psinfo(struct elf_prpsinfo *psinfo, struct task_struct *p,