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perf supports a simple JIT interface to resolve symbols for dynamic code generated
by a JIT.

The JIT has to write a /tmp/perf-%d.map  (%d = pid of process) file

This is a text file.

Each line has the following format, fields separated with spaces:

START SIZE symbolname

START and SIZE are hex numbers without 0x.
symbolname is the rest of the line, so it could contain special characters.

The ownership of the file has to match the process.
ss='right'>2017-01-28 21:54:23 +0100 commit2ad5d52d42810bed95100a3d912679d8864421ec (patch) tree7f93e2f906b1c86f5b76c0f4c0978d41a8a29861 /tools/testing/selftests/bpf parent83b5d1e3d3013dbf90645a5d07179d018c8243fa (diff)
parisc: Don't use BITS_PER_LONG in userspace-exported swab.h header
In swab.h the "#if BITS_PER_LONG > 32" breaks compiling userspace programs if BITS_PER_LONG is #defined by userspace with the sizeof() compiler builtin. Solve this problem by using __BITS_PER_LONG instead. Since we now #include asm/bitsperlong.h avoid further potential userspace pollution by moving the #define of SHIFT_PER_LONG to bitops.h which is not exported to userspace. This patch unbreaks compiling qemu on hppa/parisc. Signed-off-by: Helge Deller <deller@gmx.de> Cc: <stable@vger.kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf')