7b43c67950
Add two macros which generate functions to extract the relevent bits
from event->attr.config{,1,2}.
EVENT_DEFINE_RANGE() defines an accessor for a range of bits in the
event, as well as a "max" function that gives the maximum value of the
field based on the bit width.
EVENT_DEFINE_RANGE_FORMAT() defines the accessor & max routine and also
a format attribute for use in the PMU's attr_groups.
Signed-off-by: Cody P Schafer <cody@linux.vnet.ibm.com>
[mpe: move to powerpc, ugly but descriptive macro names]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
36 lines
961 B
C
36 lines
961 B
C
#ifndef LINUX_POWERPC_PERF_HV_COMMON_H_
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#define LINUX_POWERPC_PERF_HV_COMMON_H_
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#include <linux/perf_event.h>
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#include <linux/types.h>
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struct hv_perf_caps {
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u16 version;
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u16 collect_privileged:1,
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ga:1,
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expanded:1,
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lab:1,
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unused:12;
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};
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unsigned long hv_perf_caps_get(struct hv_perf_caps *caps);
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#define EVENT_DEFINE_RANGE_FORMAT(name, attr_var, bit_start, bit_end) \
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PMU_FORMAT_ATTR(name, #attr_var ":" #bit_start "-" #bit_end); \
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EVENT_DEFINE_RANGE(name, attr_var, bit_start, bit_end)
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#define EVENT_DEFINE_RANGE(name, attr_var, bit_start, bit_end) \
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static u64 event_get_##name##_max(void) \
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{ \
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BUILD_BUG_ON((bit_start > bit_end) \
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|| (bit_end >= (sizeof(1ull) * 8))); \
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return (((1ull << (bit_end - bit_start)) - 1) << 1) + 1; \
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} \
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static u64 event_get_##name(struct perf_event *event) \
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{ \
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return (event->attr.attr_var >> (bit_start)) & \
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event_get_##name##_max(); \
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}
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#endif
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