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Return-Path: <adhemerval.zanella@linaro.org>
Subject: Re: [PATCH 16/16] linux: Optimize fallback 32-bit clock_getres
To: Andreas Schwab <schwab@suse.de>
Cc: libc-alpha@sourceware.org
References: <20191217214728.2886-1-adhemerval.zanella@linaro.org>
 <20191217214728.2886-16-adhemerval.zanella@linaro.org>
 <mvmv9qe3tcq.fsf@suse.de>
From: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Message-ID: <46b48283-fab6-ffbf-8f83-037981f5e547@linaro.org>
Date: Wed, 18 Dec 2019 15:02:00 -0000
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On 18/12/2019 05:56, Andreas Schwab wrote:
> On Dez 17 2019, Adhemerval Zanella wrote:
> 
>> diff --git a/sysdeps/unix/sysv/linux/clock_getres.c b/sysdeps/unix/sysv/linux/clock_getres.c
>> index 3d59f11d71..c1e1cf60c6 100644
>> --- a/sysdeps/unix/sysv/linux/clock_getres.c
>> +++ b/sysdeps/unix/sysv/linux/clock_getres.c
>> @@ -42,13 +42,21 @@ __clock_getres64 (clockid_t clock_id, struct __timespec64 *res)
>>    int r;
>>    /* Old 32-bit ABI with possible 64-bit time_t support.  */
>>  # ifdef __NR_clock_getres_time64
>> +  /* Avoid issue a __NR_clock_getres_time64 syscall on kernels that do not
>> +     support 64-bit time_t.  */
>> +  static int time64_support = 1;
>> +  if (atomic_load_relaxed (&time64_support) == 1)
> 
> Just != 0 should be enough.
> 
> Andreas.
> 
Ack.