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commit 8ad6d6d8ed33631bd2ca5d1112e6da2f92731432
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Author: maminjie <maminjie2@huawei.com>
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Date: Mon Dec 20 19:36:32 2021 +0800
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Linux: Fix 32-bit vDSO for clock_gettime on powerpc32
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When the clock_id is CLOCK_PROCESS_CPUTIME_ID or CLOCK_THREAD_CPUTIME_ID,
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on the 5.10 kernel powerpc 32-bit, the 32-bit vDSO is executed successfully (
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because the __kernel_clock_gettime in arch/powerpc/kernel/vdso32/gettimeofday.S
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does not support these two IDs, the 32-bit time_t syscall will be used),
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but tp32.tv_sec is equal to 0, causing the 64-bit time_t syscall to continue to be used,
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resulting in two system calls.
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Fix commit 72e84d1db22203e01a43268de71ea8669eca2863.
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Signed-off-by: maminjie <maminjie2@huawei.com>
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Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
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(cherry picked from commit e0fc721ce600038dd390e77cfe52440707ef574d)
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diff --git a/sysdeps/unix/sysv/linux/clock_gettime.c b/sysdeps/unix/sysv/linux/clock_gettime.c
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index 91df6b3d967bf945..9c7d9073254843c7 100644
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--- a/sysdeps/unix/sysv/linux/clock_gettime.c
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+++ b/sysdeps/unix/sysv/linux/clock_gettime.c
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@@ -53,7 +53,7 @@ __clock_gettime64 (clockid_t clock_id, struct __timespec64 *tp)
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{
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struct timespec tp32;
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r = INTERNAL_VSYSCALL_CALL (vdso_time, 2, clock_id, &tp32);
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- if (r == 0 && tp32.tv_sec > 0)
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+ if (r == 0 && tp32.tv_sec >= 0)
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{
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*tp = valid_timespec_to_timespec64 (tp32);
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return 0;
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