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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-06 12:30:52 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-06 12:30:52 -0400
commit4aed2fd8e3181fea7c09ba79cf64e7e3f4413bf9 (patch)
tree1f69733e5daab4915a76a41de0e4d1dc61e12cfb /arch/arm/kernel
parent3a3527b6461b1298cc53ce72f336346739297ac8 (diff)
parentfc9ea5a1e53ee54f681e226d735008e2a6f8f470 (diff)
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (162 commits) tracing/kprobes: unregister_trace_probe needs to be called under mutex perf: expose event__process function perf events: Fix mmap offset determination perf, powerpc: fsl_emb: Restore setting perf_sample_data.period perf, powerpc: Convert the FSL driver to use local64_t perf tools: Don't keep unreferenced maps when unmaps are detected perf session: Invalidate last_match when removing threads from rb_tree perf session: Free the ref_reloc_sym memory at the right place x86,mmiotrace: Add support for tracing STOS instruction perf, sched migration: Librarize task states and event headers helpers perf, sched migration: Librarize the GUI class perf, sched migration: Make the GUI class client agnostic perf, sched migration: Make it vertically scrollable perf, sched migration: Parameterize cpu height and spacing perf, sched migration: Fix key bindings perf, sched migration: Ignore unhandled task states perf, sched migration: Handle ignored migrate out events perf: New migration tool overview tracing: Drop cpparg() macro perf: Use tracepoint_synchronize_unregister() to flush any pending tracepoint call ... Fix up trivial conflicts in Makefile and drivers/cpufreq/cpufreq.c
Diffstat (limited to 'arch/arm/kernel')
-rw-r--r--arch/arm/kernel/perf_event.c18
1 files changed, 9 insertions, 9 deletions
diff --git a/arch/arm/kernel/perf_event.c b/arch/arm/kernel/perf_event.c
index de12536d687f..417c392ddf1c 100644
--- a/arch/arm/kernel/perf_event.c
+++ b/arch/arm/kernel/perf_event.c
@@ -164,20 +164,20 @@ armpmu_event_set_period(struct perf_event *event,
164 struct hw_perf_event *hwc, 164 struct hw_perf_event *hwc,
165 int idx) 165 int idx)
166{ 166{
167 s64 left = atomic64_read(&hwc->period_left); 167 s64 left = local64_read(&hwc->period_left);
168 s64 period = hwc->sample_period; 168 s64 period = hwc->sample_period;
169 int ret = 0; 169 int ret = 0;
170 170
171 if (unlikely(left <= -period)) { 171 if (unlikely(left <= -period)) {
172 left = period; 172 left = period;
173 atomic64_set(&hwc->period_left, left); 173 local64_set(&hwc->period_left, left);
174 hwc->last_period = period; 174 hwc->last_period = period;
175 ret = 1; 175 ret = 1;
176 } 176 }
177 177
178 if (unlikely(left <= 0)) { 178 if (unlikely(left <= 0)) {
179 left += period; 179 left += period;
180 atomic64_set(&hwc->period_left, left); 180 local64_set(&hwc->period_left, left);
181 hwc->last_period = period; 181 hwc->last_period = period;
182 ret = 1; 182 ret = 1;
183 } 183 }
@@ -185,7 +185,7 @@ armpmu_event_set_period(struct perf_event *event,
185 if (left > (s64)armpmu->max_period) 185 if (left > (s64)armpmu->max_period)
186 left = armpmu->max_period; 186 left = armpmu->max_period;
187 187
188 atomic64_set(&hwc->prev_count, (u64)-left); 188 local64_set(&hwc->prev_count, (u64)-left);
189 189
190 armpmu->write_counter(idx, (u64)(-left) & 0xffffffff); 190 armpmu->write_counter(idx, (u64)(-left) & 0xffffffff);
191 191
@@ -204,18 +204,18 @@ armpmu_event_update(struct perf_event *event,
204 u64 delta; 204 u64 delta;
205 205
206again: 206again:
207 prev_raw_count = atomic64_read(&hwc->prev_count); 207 prev_raw_count = local64_read(&hwc->prev_count);
208 new_raw_count = armpmu->read_counter(idx); 208 new_raw_count = armpmu->read_counter(idx);
209 209
210 if (atomic64_cmpxchg(&hwc->prev_count, prev_raw_count, 210 if (local64_cmpxchg(&hwc->prev_count, prev_raw_count,
211 new_raw_count) != prev_raw_count) 211 new_raw_count) != prev_raw_count)
212 goto again; 212 goto again;
213 213
214 delta = (new_raw_count << shift) - (prev_raw_count << shift); 214 delta = (new_raw_count << shift) - (prev_raw_count << shift);
215 delta >>= shift; 215 delta >>= shift;
216 216
217 atomic64_add(delta, &event->count); 217 local64_add(delta, &event->count);
218 atomic64_sub(delta, &hwc->period_left); 218 local64_sub(delta, &hwc->period_left);
219 219
220 return new_raw_count; 220 return new_raw_count;
221} 221}
@@ -478,7 +478,7 @@ __hw_perf_event_init(struct perf_event *event)
478 if (!hwc->sample_period) { 478 if (!hwc->sample_period) {
479 hwc->sample_period = armpmu->max_period; 479 hwc->sample_period = armpmu->max_period;
480 hwc->last_period = hwc->sample_period; 480 hwc->last_period = hwc->sample_period;
481 atomic64_set(&hwc->period_left, hwc->sample_period); 481 local64_set(&hwc->period_left, hwc->sample_period);
482 } 482 }
483 483
484 err = 0; 484 err = 0;