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eb56db5432
The perf_regs.c file does not get built on Powerpc as CONFIG_PERF_REGS is false. So the weak definition for 'sample_regs_masks' doesn't get picked up. Adding perf_regs.o to util/Build unconditionally, exposes a redefinition error for 'perf_reg_value()' function (due to the static inline version in util/perf_regs.h). So use #ifdef HAVE_PERF_REGS_SUPPORT' around that function. Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Dominik Dingel <dingel@linux.vnet.ibm.com> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Stephane Eranian <eranian@google.com> Cc: linuxppc-dev@ozlabs.org Link: http://lkml.kernel.org/r/20150930182836.GA27858@us.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
34 lines
558 B
C
34 lines
558 B
C
#include <errno.h>
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#include "perf_regs.h"
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#include "event.h"
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const struct sample_reg __weak sample_reg_masks[] = {
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SMPL_REG_END
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};
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#ifdef HAVE_PERF_REGS_SUPPORT
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int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
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{
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int i, idx = 0;
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u64 mask = regs->mask;
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if (regs->cache_mask & (1 << id))
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goto out;
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if (!(mask & (1 << id)))
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return -EINVAL;
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for (i = 0; i < id; i++) {
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if (mask & (1 << i))
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idx++;
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}
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regs->cache_mask |= (1 << id);
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regs->cache_regs[id] = regs->regs[idx];
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out:
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*valp = regs->cache_regs[id];
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return 0;
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}
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#endif
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