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| author | Christophe Leroy <christophe.leroy@csgroup.eu> | 2021-03-31 16:48:44 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-05 10:28:58 +0200 |
| commit | 8c70cce8923187693a608d2b56600ec529915f7b (patch) | |
| tree | 1e26775dbb9859950bcb4ecbef5c94e1328b8969 /lib | |
| parent | 6ba9e8fb47f6300a9245dff61256cd476a58838b (diff) | |
lib/vdso: Mark do_hres_timens() and do_coarse_timens() __always_inline()
[ Upstream commit 58efe9f696cf908f40d6672aeca81cb2ad2bc762 ]
In the same spirit as commit c966533f8c6c ("lib/vdso: Mark do_hres()
and do_coarse() as __always_inline"), mark do_hres_timens() and
do_coarse_timens() __always_inline.
The measurement below in on a non timens process, ie on the fastest path.
On powerpc32, without the patch:
clock-gettime-monotonic-raw: vdso: 1155 nsec/call
clock-gettime-monotonic-coarse: vdso: 813 nsec/call
clock-gettime-monotonic: vdso: 1076 nsec/call
With the patch:
clock-gettime-monotonic-raw: vdso: 1100 nsec/call
clock-gettime-monotonic-coarse: vdso: 667 nsec/call
clock-gettime-monotonic: vdso: 1025 nsec/call
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/90dcf45ebadfd5a07f24241551c62f619d1cb930.1617209142.git.christophe.leroy@csgroup.eu
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/vdso/gettimeofday.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/lib/vdso/gettimeofday.c b/lib/vdso/gettimeofday.c index 2919f1698140..c6f6dee08746 100644 --- a/lib/vdso/gettimeofday.c +++ b/lib/vdso/gettimeofday.c @@ -46,8 +46,8 @@ static inline bool vdso_cycles_ok(u64 cycles) #endif #ifdef CONFIG_TIME_NS -static int do_hres_timens(const struct vdso_data *vdns, clockid_t clk, - struct __kernel_timespec *ts) +static __always_inline int do_hres_timens(const struct vdso_data *vdns, clockid_t clk, + struct __kernel_timespec *ts) { const struct vdso_data *vd = __arch_get_timens_vdso_data(); const struct timens_offset *offs = &vdns->offset[clk]; @@ -97,8 +97,8 @@ static __always_inline const struct vdso_data *__arch_get_timens_vdso_data(void) return NULL; } -static int do_hres_timens(const struct vdso_data *vdns, clockid_t clk, - struct __kernel_timespec *ts) +static __always_inline int do_hres_timens(const struct vdso_data *vdns, clockid_t clk, + struct __kernel_timespec *ts) { return -EINVAL; } @@ -159,8 +159,8 @@ static __always_inline int do_hres(const struct vdso_data *vd, clockid_t clk, } #ifdef CONFIG_TIME_NS -static int do_coarse_timens(const struct vdso_data *vdns, clockid_t clk, - struct __kernel_timespec *ts) +static __always_inline int do_coarse_timens(const struct vdso_data *vdns, clockid_t clk, + struct __kernel_timespec *ts) { const struct vdso_data *vd = __arch_get_timens_vdso_data(); const struct vdso_timestamp *vdso_ts = &vd->basetime[clk]; @@ -188,8 +188,8 @@ static int do_coarse_timens(const struct vdso_data *vdns, clockid_t clk, return 0; } #else -static int do_coarse_timens(const struct vdso_data *vdns, clockid_t clk, - struct __kernel_timespec *ts) +static __always_inline int do_coarse_timens(const struct vdso_data *vdns, clockid_t clk, + struct __kernel_timespec *ts) { return -1; } |