x86/vdso: Use unsigned int consistently for vsyscall_gtod_data:: Seq

The sequence count in vgtod_data is unsigned int, but the call sites use
unsigned long, which is a pointless exercise. Fix the call sites and
replace 'unsigned' with unsinged 'int' while at it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Matt Rickard <matt@softrans.com.au>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: devel@linuxdriverproject.org
Cc: virtualization@lists.linux-foundation.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Juergen Gross <jgross@suse.com>
Link: https://lkml.kernel.org/r/20180917130707.236250416@linutronix.de

diff --git a/arch/x86/entry/vdso/vclock_gettime.c b/arch/x86/entry/vdso/vclock_gettime.c
index 6a95085..b50ee06 100644 (file)
--- a/arch/x86/entry/vdso/vclock_gettime.c
+++ b/arch/x86/entry/vdso/vclock_gettime.c
@@ -208,7 +208,7 @@ notrace static inline u64 vgetsns(int *mode)
 /* Code size doesn't matter (vdso is 4k anyway) and this is faster. */
 notrace static int __always_inline do_realtime(struct timespec *ts)
 {
-       unsigned long seq;
+       unsigned int seq;
        u64 ns;
        int mode;
 
@@ -229,7 +229,7 @@ notrace static int __always_inline do_realtime(struct timespec *ts)
 
 notrace static int __always_inline do_monotonic(struct timespec *ts)
 {
-       unsigned long seq;
+       unsigned int seq;
        u64 ns;
        int mode;
 
@@ -250,7 +250,7 @@ notrace static int __always_inline do_monotonic(struct timespec *ts)
 
 notrace static void do_realtime_coarse(struct timespec *ts)
 {
-       unsigned long seq;
+       unsigned int seq;
        do {
                seq = gtod_read_begin(gtod);
                ts->tv_sec = gtod->wall_time_coarse_sec;
@@ -260,7 +260,7 @@ notrace static void do_realtime_coarse(struct timespec *ts)
 
 notrace static void do_monotonic_coarse(struct timespec *ts)
 {
-       unsigned long seq;
+       unsigned int seq;
        do {
                seq = gtod_read_begin(gtod);
                ts->tv_sec = gtod->monotonic_time_coarse_sec;

diff --git a/arch/x86/include/asm/vgtod.h b/arch/x86/include/asm/vgtod.h
index 5374854..91cad1f 100644 (file)
--- a/arch/x86/include/asm/vgtod.h
+++ b/arch/x86/include/asm/vgtod.h
@@ -15,9 +15,9 @@ typedef unsigned long gtod_long_t;
  * so be carefull by modifying this structure.
  */
 struct vsyscall_gtod_data {
-       unsigned seq;
+       unsigned int seq;
 
-       int vclock_mode;
+       int     vclock_mode;
        u64     cycle_last;
        u64     mask;
        u32     mult;
@@ -44,9 +44,9 @@ static inline bool vclock_was_used(int vclock)
        return READ_ONCE(vclocks_used) & (1 << vclock);
 }
 
-static inline unsigned gtod_read_begin(const struct vsyscall_gtod_data *s)
+static inline unsigned int gtod_read_begin(const struct vsyscall_gtod_data *s)
 {
-       unsigned ret;
+       unsigned int ret;
 
 repeat:
        ret = READ_ONCE(s->seq);
@@ -59,7 +59,7 @@ repeat:
 }
 
 static inline int gtod_read_retry(const struct vsyscall_gtod_data *s,
-                                       unsigned start)
+                                 unsigned int start)
 {
        smp_rmb();
        return unlikely(s->seq != start);