38 lines
1.1 KiB
Diff
38 lines
1.1 KiB
Diff
From: Ben Hutchings <ben@decadent.org.uk>
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Date: Sat, 22 Jul 2017 17:37:33 +0100
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Subject: perf tools: Fix unwind build on i386
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Forwarded: no
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EINVAL may not be defined when building unwind-libunwind.c with
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REMOTE_UNWIND_LIBUNWIND, resulting in a compiler error in
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LIBUNWIND__ARCH_REG_ID(). Its only caller, access_reg(), only checks
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for a negative return value and doesn't care what it is. So change
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-EINVAL to -1.
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Fixes: 52ffe0ff02fc ("Support x86(32-bit) cross platform callchain unwind.")
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Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
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---
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Index: linux/tools/perf/arch/x86/util/unwind-libunwind.c
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===================================================================
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--- linux.orig/tools/perf/arch/x86/util/unwind-libunwind.c
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+++ linux/tools/perf/arch/x86/util/unwind-libunwind.c
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@@ -67,7 +67,7 @@ int LIBUNWIND__ARCH_REG_ID(int regnum)
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break;
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default:
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pr_err("unwind: invalid reg id %d\n", regnum);
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- return -EINVAL;
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+ return -1;
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}
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return id;
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@@ -107,7 +107,7 @@ int LIBUNWIND__ARCH_REG_ID(int regnum)
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break;
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default:
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pr_err("unwind: invalid reg id %d\n", regnum);
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- return -EINVAL;
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+ return -1;
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}
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return id;
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