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| author |   Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> | 2017-03-28 15:17:52 +0530 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2017-03-28 12:24:56 -0300 |
| commit | 2d01ecc580405169ecd6e3880617bc61cf482fdd (patch) | |
| tree | 8dad5a17de78f3f288659f1a000a4f83825e0f15 /tools/perf/arch/x86/util | |
| parent | perf tools: Remove support for command aliases (diff) | |
| download | linux-dev-2d01ecc580405169ecd6e3880617bc61cf482fdd.tar.xz linux-dev-2d01ecc580405169ecd6e3880617bc61cf482fdd.zip | |
perf/sdt/x86: Add renaming logic for (missing) 8 bit registers
I found couple of events using al, bl, cl and dl registers for argument.
These are not directly accepted by uprobe_events and thus needs to be
mapped to ax, bx, cx and dx respectively.
Few ex,
/usr/bin/qemu-system-s390x
css_adapter_interrupt: 1@%bl
css_chpid_add: 1@%cl 1@%sil 1@%dl
dma_bdrv_io: 8@%rbx 8@%rbp -8@%r14 1@%al
/usr/bin/postgres
buffer__read__done: ... -1@-bash -1@%al
buffer__read__start: ... -1@%al
I don't find any sdt events using ah, bh,... registers. But I also don't
see any reason to not use them, so there might be rare events using
these registers, and if so, perf should have a renaming logic for them
too.
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: Hemant Kumar <hemant@linux.vnet.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20170328094754.3156-2-ravi.bangoria@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch/x86/util')
| -rw-r--r-- | tools/perf/arch/x86/util/perf_regs.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/perf_regs.c b/tools/perf/arch/x86/util/perf_regs.c index d8a8dcf761f7..fa1fd196837d 100644 --- a/tools/perf/arch/x86/util/perf_regs.c +++ b/tools/perf/arch/x86/util/perf_regs.c @@ -40,12 +40,20 @@ struct sdt_name_reg { static const struct sdt_name_reg sdt_reg_renamings[] = { SDT_NAME_REG(eax, ax), SDT_NAME_REG(rax, ax), + SDT_NAME_REG(al, ax), + SDT_NAME_REG(ah, ax), SDT_NAME_REG(ebx, bx), SDT_NAME_REG(rbx, bx), + SDT_NAME_REG(bl, bx), + SDT_NAME_REG(bh, bx), SDT_NAME_REG(ecx, cx), SDT_NAME_REG(rcx, cx), + SDT_NAME_REG(cl, cx), + SDT_NAME_REG(ch, cx), SDT_NAME_REG(edx, dx), SDT_NAME_REG(rdx, dx), + SDT_NAME_REG(dl, dx), + SDT_NAME_REG(dh, dx), SDT_NAME_REG(esi, si), SDT_NAME_REG(rsi, si), SDT_NAME_REG(sil, si), |