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Date:   Wed, 12 Oct 2016 21:11:22 -0400
From:   Muhammad Usman Nadeem <>
Subject: Intel PT: Address filtering not working. (cc me)

Usage: sudo perf record -e intel_pt//u --filter='filter 0x400000 /
0x1000 @./a.out' ./a.out 123

a.out is my program (for loop, call using function pointer and use of
longjump) and 123 is the argument.

Output: [ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 1.171 MB ]

Output contains mostly MTC packets and no TNT or TIP packets.

I am on the latest mainline version of kernel (b67be92) and perf
version perf version 4.8.gb67be9.

What could be the problem?
I am using it wrong?


View attachment "test.c" of type "text/x-csrc" (538 bytes)

Download attachment "a.out" of type "application/octet-stream" (9408 bytes)

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