Commit c719f560 authored by Peter Zijlstra's avatar Peter Zijlstra Committed by Ingo Molnar

perf: Fix and clean up initialization of pmu::event_idx

Andy reported that the current state of event_idx is rather confused.
So remove all but the x86_pmu implementation and change the default to
return 0 (the safe option).
Reported-by: default avatarAndy Lutomirski <luto@amacapital.net>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Cody P Schafer <cody@linux.vnet.ibm.com>
Cc: Cody P Schafer <dev@codyps.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Himangi Saraogi <himangi774@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: sukadev@linux.vnet.ibm.com <sukadev@linux.vnet.ibm.com>
Cc: Thomas Huth <thuth@linux.vnet.ibm.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: linux390@de.ibm.com
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-s390@vger.kernel.org
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 65d71fe1
......@@ -417,11 +417,6 @@ static int h_24x7_event_add(struct perf_event *event, int flags)
return 0;
}
static int h_24x7_event_idx(struct perf_event *event)
{
return 0;
}
static struct pmu h_24x7_pmu = {
.task_ctx_nr = perf_invalid_context,
......@@ -433,7 +428,6 @@ static struct pmu h_24x7_pmu = {
.start = h_24x7_event_start,
.stop = h_24x7_event_stop,
.read = h_24x7_event_update,
.event_idx = h_24x7_event_idx,
};
static int hv_24x7_init(void)
......
......@@ -246,11 +246,6 @@ static int h_gpci_event_init(struct perf_event *event)
return 0;
}
static int h_gpci_event_idx(struct perf_event *event)
{
return 0;
}
static struct pmu h_gpci_pmu = {
.task_ctx_nr = perf_invalid_context,
......@@ -262,7 +257,6 @@ static struct pmu h_gpci_pmu = {
.start = h_gpci_event_start,
.stop = h_gpci_event_stop,
.read = h_gpci_event_update,
.event_idx = h_gpci_event_idx,
};
static int hv_gpci_init(void)
......
......@@ -1411,11 +1411,6 @@ static void cpumsf_pmu_del(struct perf_event *event, int flags)
perf_pmu_enable(event->pmu);
}
static int cpumsf_pmu_event_idx(struct perf_event *event)
{
return event->hw.idx;
}
CPUMF_EVENT_ATTR(SF, SF_CYCLES_BASIC, PERF_EVENT_CPUM_SF);
CPUMF_EVENT_ATTR(SF, SF_CYCLES_BASIC_DIAG, PERF_EVENT_CPUM_SF_DIAG);
......@@ -1458,7 +1453,6 @@ static struct pmu cpumf_sampling = {
.stop = cpumsf_pmu_stop,
.read = cpumsf_pmu_read,
.event_idx = cpumsf_pmu_event_idx,
.attr_groups = cpumsf_pmu_attr_groups,
};
......
......@@ -6071,11 +6071,6 @@ static int perf_swevent_init(struct perf_event *event)
return 0;
}
static int perf_swevent_event_idx(struct perf_event *event)
{
return 0;
}
static struct pmu perf_swevent = {
.task_ctx_nr = perf_sw_context,
......@@ -6085,8 +6080,6 @@ static struct pmu perf_swevent = {
.start = perf_swevent_start,
.stop = perf_swevent_stop,
.read = perf_swevent_read,
.event_idx = perf_swevent_event_idx,
};
#ifdef CONFIG_EVENT_TRACING
......@@ -6204,8 +6197,6 @@ static struct pmu perf_tracepoint = {
.start = perf_swevent_start,
.stop = perf_swevent_stop,
.read = perf_swevent_read,
.event_idx = perf_swevent_event_idx,
};
static inline void perf_tp_register(void)
......@@ -6431,8 +6422,6 @@ static struct pmu perf_cpu_clock = {
.start = cpu_clock_event_start,
.stop = cpu_clock_event_stop,
.read = cpu_clock_event_read,
.event_idx = perf_swevent_event_idx,
};
/*
......@@ -6511,8 +6500,6 @@ static struct pmu perf_task_clock = {
.start = task_clock_event_start,
.stop = task_clock_event_stop,
.read = task_clock_event_read,
.event_idx = perf_swevent_event_idx,
};
static void perf_pmu_nop_void(struct pmu *pmu)
......@@ -6542,7 +6529,7 @@ static void perf_pmu_cancel_txn(struct pmu *pmu)
static int perf_event_idx_default(struct perf_event *event)
{
return event->hw.idx + 1;
return 0;
}
/*
......
......@@ -605,11 +605,6 @@ static void hw_breakpoint_stop(struct perf_event *bp, int flags)
bp->hw.state = PERF_HES_STOPPED;
}
static int hw_breakpoint_event_idx(struct perf_event *bp)
{
return 0;
}
static struct pmu perf_breakpoint = {
.task_ctx_nr = perf_sw_context, /* could eventually get its own */
......@@ -619,8 +614,6 @@ static struct pmu perf_breakpoint = {
.start = hw_breakpoint_start,
.stop = hw_breakpoint_stop,
.read = hw_breakpoint_pmu_read,
.event_idx = hw_breakpoint_event_idx,
};
int __init init_hw_breakpoint(void)
......
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