RE: [PATCH] cputime: Fix timeval-->cputime conversion

2016-02-01 Thread Zengtao (B)
> -Original Message- > From: Thomas Gleixner [mailto:t...@linutronix.de] > Sent: Monday, February 01, 2016 4:43 PM > To: Zengtao (B) > Cc: Arnd Bergmann; LKML; Frederic Weisbecker > Subject: RE: [PATCH] cputime: Fix timeval-->cputime conversion > > On Mon, 1

RE: [PATCH] cputime: Fix timeval-->cputime conversion

2016-02-01 Thread Thomas Gleixner
On Mon, 1 Feb 2016, Zengtao (B) wrote: > Hi Arnd: > I have got a new idea about the problem: > In include/linux/time64.h > #define NSEC_PER_SEC 10L > I think we should change it to > #define NSEC_PER_SEC 10LL > > My reason is : > 1. when it is used in a multiplication,

RE: [PATCH] cputime: Fix timeval-->cputime conversion

2016-01-31 Thread Zengtao (B)
t get overflow, the change has no side affect. Thanks. Zengtao > -Original Message- > From: Zengtao (B) > Sent: Saturday, January 30, 2016 10:31 AM > To: 'Arnd Bergmann' > Cc: Thomas Gleixner; LKML; Frederic Weisbecker > Subject: RE: [PATCH] cputime:

RE: [PATCH] cputime: Fix timeval-->cputime conversion

2016-01-29 Thread Zengtao (B)
> -Original Message- > From: Arnd Bergmann [mailto:a...@arndb.de] > Sent: Friday, January 29, 2016 4:46 PM > To: Zengtao (B) > Cc: Thomas Gleixner; LKML; Frederic Weisbecker > Subject: Re: [PATCH] cputime: Fix timeval-->cputime conversion > > On Friday 29 Ja

Re: [PATCH] cputime: Fix timeval-->cputime conversion

2016-01-29 Thread Arnd Bergmann
On Friday 29 January 2016 03:12:37 Zengtao wrote: > > -Original Message- > > From: Arnd Bergmann [mailto:a...@arndb.de] > > Sent: Thursday, January 28, 2016 7:52 PM > > To: Thomas Gleixner > > Cc: Zengtao (B); LKML; Frederic Weisbecker > > Subje

RE: [PATCH] cputime: Fix timeval-->cputime conversion

2016-01-28 Thread Zengtao (B)
> -Original Message- > From: Arnd Bergmann [mailto:a...@arndb.de] > Sent: Thursday, January 28, 2016 7:52 PM > To: Thomas Gleixner > Cc: Zengtao (B); LKML; Frederic Weisbecker > Subject: Re: [PATCH] cputime: Fix timeval-->cputime conversion > > On Thursday 28 J

Re: [PATCH] cputime: Fix timeval-->cputime conversion

2016-01-28 Thread Arnd Bergmann
On Thursday 28 January 2016 09:22:04 Thomas Gleixner wrote: > Cc'ing Arnd > > On Thu, 28 Jan 2016, zengtao wrote: > > > The structure: > > struct timeval { > > __kernel_time_t tv_sec; /* seconds */ > > __kernel_suseconds_ttv_usec;/* microseconds */ > > }; >

Re: [PATCH] cputime: Fix timeval-->cputime conversion

2016-01-28 Thread Thomas Gleixner
Cc'ing Arnd On Thu, 28 Jan 2016, zengtao wrote: > The structure: > struct timeval { > __kernel_time_t tv_sec; /* seconds */ > __kernel_suseconds_ttv_usec;/* microseconds */ > }; > both __kernel_time_t and __kernel_suseconds_t are short than u64 > when it is