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authorKajol Jain <kjain@linux.ibm.com>2021-08-18 20:15:55 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2021-08-25 15:38:19 +0300
commitcc90c6742ef5b438f4cb86029d7a794bd0a44a06 (patch)
tree5c27230a6bace8bf164d323536e0ecddec7953da /arch/powerpc/perf
parentb1643084d164cea0c107a39bcdf0119fc52619af (diff)
downloadlinux-cc90c6742ef5b438f4cb86029d7a794bd0a44a06.tar.xz
powerpc/perf: Drop the case of returning 0 as instruction pointer
Drop the case of returning 0 as instruction pointer since kernel never executes at 0 and userspace almost never does either. Fixes: e6878835ac47 ("powerpc/perf: Sample only if SIAR-Valid bit is set in P7+") Signed-off-by: Kajol Jain <kjain@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210818171556.36912-2-kjain@linux.ibm.com
Diffstat (limited to 'arch/powerpc/perf')
-rw-r--r--arch/powerpc/perf/core-book3s.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 3a782a35100d..9bb466d2d99e 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -2270,8 +2270,6 @@ unsigned long perf_instruction_pointer(struct pt_regs *regs)
return regs->nip;
} else if (use_siar && siar_valid(regs))
return siar + perf_ip_adjust(regs);
- else if (use_siar)
- return 0; // no valid instruction pointer
else
return regs->nip;
}