[RFC PATCH v2 06/10] lib: vdso: make do_coarse() return 0
From: Christophe Leroy <hidden>
Date: 2019-12-23 14:31:14
Also in:
linux-arm-kernel, linux-mips, lkml
Subsystem:
generic vdso library, library code, the rest · Maintainers:
Andy Lutomirski, Thomas Gleixner, Vincenzo Frascino, Andrew Morton, Linus Torvalds
do_coarse() is similare to do_hres() except that it never fails. Change its type to int instead of void and get it return 0 at all time. This cleans the code a bit. Signed-off-by: Christophe Leroy <redacted> --- lib/vdso/gettimeofday.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-)
diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c
index 86d5b1c8796b..17b4cff6e5f0 100644
--- a/lib/vdso/gettimeofday.c
+++ b/lib/vdso/gettimeofday.c@@ -64,7 +64,7 @@ static inline int do_hres(const struct vdso_data *vd, clockid_t clk, return 0; } -static void do_coarse(const struct vdso_data *vd, clockid_t clk, +static int do_coarse(const struct vdso_data *vd, clockid_t clk, struct __kernel_timespec *ts) { const struct vdso_timestamp *vdso_ts = &vd->basetime[clk];
@@ -75,6 +75,8 @@ static void do_coarse(const struct vdso_data *vd, clockid_t clk, ts->tv_sec = vdso_ts->sec; ts->tv_nsec = vdso_ts->nsec; } while (unlikely(vdso_read_retry(vd, seq))); + + return 0; } static __maybe_unused int
@@ -92,14 +94,13 @@ __cvdso_clock_gettime(const struct vdso_data *vd, clockid_t clock, * clocks are handled in the VDSO directly. */ msk = 1U << clock; - if (likely(msk & VDSO_HRES)) { + if (likely(msk & VDSO_HRES)) return do_hres(&vd[CS_HRES_COARSE], clock, ts); - } else if (msk & VDSO_COARSE) { - do_coarse(&vd[CS_HRES_COARSE], clock, ts); - return 0; - } else if (msk & VDSO_RAW) { + else if (msk & VDSO_COARSE) + return do_coarse(&vd[CS_HRES_COARSE], clock, ts); + else if (msk & VDSO_RAW) return do_hres(&vd[CS_RAW], clock, ts); - } + return -1; }
--
2.13.3