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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull perf fixes from Ingo Molnar:
 "Three fixlets and two small (and low risk) hw-enablement changes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf: Fix event group context move
  x86/perf: Add IvyBridge EP support
  perf/x86: Fix P6 driver section warning
  arch/x86/tools/insn_sanity.c: Identify source of messages
  perf/x86: Enable Intel Lincroft/Penwell/Cloverview Atom support
This commit is contained in:
Linus Torvalds 2013-02-05 07:57:09 +11:00
commit 51c1abb95f
4 changed files with 32 additions and 6 deletions
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6
arch/x86/kernel/cpu/perf_event_intel.c
View File

@ -2019,7 +2019,10 @@ __init int intel_pmu_init(void)
break;
case 28: /* Atom */
case 54: /* Cedariew */
case 38: /* Lincroft */
case 39: /* Penwell */
case 53: /* Cloverview */
case 54: /* Cedarview */
memcpy(hw_cache_event_ids, atom_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
@ -2084,6 +2087,7 @@ __init int intel_pmu_init(void)
pr_cont("SandyBridge events, ");
break;
case 58: /* IvyBridge */
case 62: /* IvyBridge EP */
memcpy(hw_cache_event_ids, snb_hw_cache_event_ids,
sizeof(hw_cache_event_ids));
memcpy(hw_cache_extra_regs, snb_hw_cache_extra_regs,

2
arch/x86/kernel/cpu/perf_event_p6.c
View File

@ -19,7 +19,7 @@ static const u64 p6_perfmon_event_map[] =
};
static __initconst u64 p6_hw_cache_event_ids
static u64 p6_hw_cache_event_ids
[PERF_COUNT_HW_CACHE_MAX]
[PERF_COUNT_HW_CACHE_OP_MAX]
[PERF_COUNT_HW_CACHE_RESULT_MAX] =

10
arch/x86/tools/insn_sanity.c
View File

@ -55,7 +55,7 @@ static FILE *input_file; /* Input file name */
static void usage(const char *err)
{
if (err)
fprintf(stderr, "Error: %s\n\n", err);
fprintf(stderr, "%s: Error: %s\n\n", prog, err);
fprintf(stderr, "Usage: %s [-y|-n|-v] [-s seed[,no]] [-m max] [-i input]\n", prog);
fprintf(stderr, "\t-y 64bit mode\n");
fprintf(stderr, "\t-n 32bit mode\n");
@ -269,7 +269,13 @@ int main(int argc, char **argv)
insns++;
}
fprintf(stdout, "%s: decoded and checked %d %s instructions with %d errors (seed:0x%x)\n", (errors) ? "Failure" : "Success", insns, (input_file) ? "given" : "random", errors, seed);
fprintf(stdout, "%s: %s: decoded and checked %d %s instructions with %d errors (seed:0x%x)\n",
prog,
(errors) ? "Failure" : "Success",
insns,
(input_file) ? "given" : "random",
errors,
seed);
return errors ? 1 : 0;
}

20
kernel/events/core.c
View File

@ -907,6 +907,15 @@ list_add_event(struct perf_event *event, struct perf_event_context *ctx)
ctx->nr_stat++;
}
/*
* Initialize event state based on the perf_event_attr::disabled.
*/
static inline void perf_event__state_init(struct perf_event *event)
{
event->state = event->attr.disabled ? PERF_EVENT_STATE_OFF :
PERF_EVENT_STATE_INACTIVE;
}
/*
* Called at perf_event creation and when events are attached/detached from a
* group.
@ -6179,8 +6188,7 @@ perf_event_alloc(struct perf_event_attr *attr, int cpu,
event->overflow_handler = overflow_handler;
event->overflow_handler_context = context;
if (attr->disabled)
event->state = PERF_EVENT_STATE_OFF;
perf_event__state_init(event);
pmu = NULL;
@ -6609,9 +6617,17 @@ SYSCALL_DEFINE5(perf_event_open,
mutex_lock(&gctx->mutex);
perf_remove_from_context(group_leader);
/*
* Removing from the context ends up with disabled
* event. What we want here is event in the initial
* startup state, ready to be add into new context.
*/
perf_event__state_init(group_leader);
list_for_each_entry(sibling, &group_leader->sibling_list,
group_entry) {
perf_remove_from_context(sibling);
perf_event__state_init(sibling);
put_ctx(gctx);
}
mutex_unlock(&gctx->mutex);