aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/clocksource.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-05-19 20:44:40 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-19 20:44:40 -0400
commit7e6628e4bcb3b3546c625ec63ca724f28ab14f0c (patch)
tree111a94cefa9d800ec5c5e59520f4b5d1880965d0 /include/linux/clocksource.h
parent0f1bdc1815c4cb29b3cd71a7091b478e426faa0b (diff)
parentab0e08f15d23628dd8d50bf6ce1a935a8840c7dc (diff)
Merge branch 'timers-clockevents-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-clockevents-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: hpet: Cleanup the clockevents init and register code x86: Convert PIT to clockevents_config_and_register() clockevents: Provide interface to reconfigure an active clock event device clockevents: Provide combined configure and register function clockevents: Restructure clock_event_device members clocksource: Get rid of the hardcoded 5 seconds sleep time limit clocksource: Restructure clocksource struct members
Diffstat (limited to 'include/linux/clocksource.h')
-rw-r--r--include/linux/clocksource.h32
1 files changed, 14 insertions, 18 deletions
diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 0fb0b7e79394..c918fbd33ee5 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -159,42 +159,38 @@ extern u64 timecounter_cyc2time(struct timecounter *tc,
159 */ 159 */
160struct clocksource { 160struct clocksource {
161 /* 161 /*
162 * First part of structure is read mostly 162 * Hotpath data, fits in a single cache line when the
163 * clocksource itself is cacheline aligned.
163 */ 164 */
164 const char *name;
165 struct list_head list;
166 int rating;
167 cycle_t (*read)(struct clocksource *cs); 165 cycle_t (*read)(struct clocksource *cs);
168 int (*enable)(struct clocksource *cs); 166 cycle_t cycle_last;
169 void (*disable)(struct clocksource *cs);
170 cycle_t mask; 167 cycle_t mask;
171 u32 mult; 168 u32 mult;
172 u32 shift; 169 u32 shift;
173 u64 max_idle_ns; 170 u64 max_idle_ns;
174 unsigned long flags; 171
175 cycle_t (*vread)(void);
176 void (*suspend)(struct clocksource *cs);
177 void (*resume)(struct clocksource *cs);
178#ifdef CONFIG_IA64 172#ifdef CONFIG_IA64
179 void *fsys_mmio; /* used by fsyscall asm code */ 173 void *fsys_mmio; /* used by fsyscall asm code */
180#define CLKSRC_FSYS_MMIO_SET(mmio, addr) ((mmio) = (addr)) 174#define CLKSRC_FSYS_MMIO_SET(mmio, addr) ((mmio) = (addr))
181#else 175#else
182#define CLKSRC_FSYS_MMIO_SET(mmio, addr) do { } while (0) 176#define CLKSRC_FSYS_MMIO_SET(mmio, addr) do { } while (0)
183#endif 177#endif
184 178 const char *name;
185 /* 179 struct list_head list;
186 * Second part is written at each timer interrupt 180 int rating;
187 * Keep it in a different cache line to dirty no 181 cycle_t (*vread)(void);
188 * more than one cache line. 182 int (*enable)(struct clocksource *cs);
189 */ 183 void (*disable)(struct clocksource *cs);
190 cycle_t cycle_last ____cacheline_aligned_in_smp; 184 unsigned long flags;
185 void (*suspend)(struct clocksource *cs);
186 void (*resume)(struct clocksource *cs);
191 187
192#ifdef CONFIG_CLOCKSOURCE_WATCHDOG 188#ifdef CONFIG_CLOCKSOURCE_WATCHDOG
193 /* Watchdog related data, used by the framework */ 189 /* Watchdog related data, used by the framework */
194 struct list_head wd_list; 190 struct list_head wd_list;
195 cycle_t wd_last; 191 cycle_t wd_last;
196#endif 192#endif
197}; 193} ____cacheline_aligned;
198 194
199/* 195/*
200 * Clock source flags bits:: 196 * Clock source flags bits::