335f70faa2
This patch enables perf jitdump for riscv64 and was tested with V8 on qemu rv64. Qemu rv64: $ perf record -e cpu-clock -c 1000 -g -k mono ./d8_rv64 --perf-prof --no-write-protect-code-memory test.js $ perf inject -j -i perf.data -o perf.data.jitted $ perf report -i perf.data.jitted Output: To display the perf.data header info, please use --header/--header-only options. Total Lost Samples: 0 Samples: 87K of event 'cpu-clock' Event count (approx.): 87974000 Children Self Command Shared Object Symbol .... 0.28% 0.06% d8_rv64 d8_rv64 [.] _ZN2v88internal6WasmJs7InstallEPNS0_7IsolateEb 0.28% 0.00% d8_rv64 d8_rv64 [.] _ZN2v88internal10ParserBaseINS0_6ParserEE22ParseLogicalExpressionEv 0.28% 0.03% d8_rv64 jitted-112-76.so [.] Builtin:InterpreterEntryTrampoline 0.12% 0.00% d8_rv64 d8_rv64 [.] _ZN2v88internal19ContextDeserializer11DeserializeEPNS0_7IsolateENS0_6HandleINS0_13JSGlobalProxyEEENS_33DeserializeInternalFieldsCallbackE 0.12% 0.01% d8_rv64 jitted-112-651.so [.] Builtin:CEntry_Return1_DontSaveFPRegs_ArgvOnStack_NoBuiltinExit .... Signed-off-by: Eric Lin <eric.lin@sifive.com> Cc: Albert Ou <aou@eecs.berkeley.edu> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Palmer Dabbelt <palmer@dabbelt.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: greentime.hu@sifive.com Cc: linux-riscv@lists.infradead.org Link: http://lore.kernel.org/lkml/20220406142606.18464-2-eric.lin@sifive.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.