systemtap: Fixed probe syscall.sendfile failure
Marked __syscall.compat_sendfile as optional (From OE-Core rev: 74bfb662246411aa062cd8b2acd37be1bbed39d3) Signed-off-by: Mikhail Durnev <mikhail_durnev@mentor.com> Signed-off-by: Muzaffar Mahmood <muzaffar_mahmood@mentor.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -0,0 +1,22 @@
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systemtap: Fixed probe syscall.sendfile failure
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compat_sendfile syscall is unavailable in kernels starting version 3.8.
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Hence systemtap scripts like 'probe syscall.* { if (target()==pid()) log(name." ".argstr) }' fail.
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This problem is solved by marking __syscall.compat_sendfile as optional in tapset/linux/syscalls2.stp
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Upstream-Status: Pending
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Signed-off-by: Mikhail Durnev <mikhail_durnev@mentor.com>
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diff -Naur old/tapset/linux/syscalls2.stp new/tapset/linux/syscalls2.stp
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--- old/tapset/linux/syscalls2.stp 2014-04-21 01:28:41.000000000 -0500
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+++ new/tapset/linux/syscalls2.stp 2014-04-21 01:38:14.961233914 -0500
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@@ -1953,7 +1953,7 @@
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# COMPAT_SYSCALL_DEFINE4(sendfile64, int, out_fd, int, in_fd,
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# compat_loff_t __user *, offset, compat_size_t, count)
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#
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-probe syscall.sendfile = __syscall.sendfile, __syscall.compat_sendfile
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+probe syscall.sendfile = __syscall.sendfile, __syscall.compat_sendfile ?
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{
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name = "sendfile"
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out_fd = __int32($out_fd)
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@ -6,6 +6,7 @@ PV = "2.5+git${SRCPV}"
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SRC_URI = "git://sourceware.org/git/systemtap.git \
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file://docproc-build-fix.patch \
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file://obsolete_automake_macros.patch \
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file://tapset-linux-sendfile-syscall.patch \
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"
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# systemtap doesn't support mips
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