From d8525358592a830c219401a1e83490470dfd28d1 Mon Sep 17 00:00:00 2001 From: Mahmoud Mandour Date: Fri, 30 Jul 2021 15:58:11 +0200 Subject: [PATCH] plugins/howvec: adapting to the new argument passing scheme MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Correctly parsing plugin argument since they now must be provided as full-form boolean parameters, e.g.: -plugin ./contrib/plugins/libhowvec.so,verbose=on,inline=on Also, introduced the argument "count" that accepts one opt to count individually at a time. Signed-off-by: Mahmoud Mandour Reviewed-by: Alex Bennée Tested-by: Alex Bennée Signed-off-by: Alex Bennée Message-Id: <20210730135817.17816-8-ma.mandourr@gmail.com> --- contrib/plugins/howvec.c | 27 +++++++++++++++++++-------- docs/devel/tcg-plugins.rst | 10 +++++----- 2 files changed, 24 insertions(+), 13 deletions(-) diff --git a/contrib/plugins/howvec.c b/contrib/plugins/howvec.c index 600f7facc1..4a5ec3d936 100644 --- a/contrib/plugins/howvec.c +++ b/contrib/plugins/howvec.c @@ -333,23 +333,34 @@ QEMU_PLUGIN_EXPORT int qemu_plugin_install(qemu_plugin_id_t id, for (i = 0; i < argc; i++) { char *p = argv[i]; - if (strcmp(p, "inline") == 0) { - do_inline = true; - } else if (strcmp(p, "verbose") == 0) { - verbose = true; - } else { + g_autofree char **tokens = g_strsplit(p, "=", -1); + if (g_strcmp0(tokens[0], "inline") == 0) { + if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &do_inline)) { + fprintf(stderr, "boolean argument parsing failed: %s\n", p); + return -1; + } + } else if (g_strcmp0(tokens[0], "verbose") == 0) { + if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &verbose)) { + fprintf(stderr, "boolean argument parsing failed: %s\n", p); + return -1; + } + } else if (g_strcmp0(tokens[0], "count") == 0) { + char *value = tokens[1]; int j; CountType type = COUNT_INDIVIDUAL; - if (*p == '!') { + if (*value == '!') { type = COUNT_NONE; - p++; + value++; } for (j = 0; j < class_table_sz; j++) { - if (strcmp(p, class_table[j].opt) == 0) { + if (strcmp(value, class_table[j].opt) == 0) { class_table[j].what = type; break; } } + } else { + fprintf(stderr, "option parsing failed: %s\n", p); + return -1; } } diff --git a/docs/devel/tcg-plugins.rst b/docs/devel/tcg-plugins.rst index e1f9eff587..7b1dece024 100644 --- a/docs/devel/tcg-plugins.rst +++ b/docs/devel/tcg-plugins.rst @@ -80,7 +80,7 @@ Once built a program can be run with multiple plugins loaded each with their own arguments:: $QEMU $OTHER_QEMU_ARGS \ - -plugin tests/plugin/libhowvec.so,arg=inline,arg=hint \ + -plugin tests/plugin/libhowvec.so,inline=on,count=hint \ -plugin tests/plugin/libhotblocks.so Arguments are plugin specific and can be used to modify their @@ -212,13 +212,13 @@ The hotpages plugin can be configured using the following arguments: This is an instruction classifier so can be used to count different types of instructions. It has a number of options to refine which get -counted. You can give an argument for a class of instructions to break -it down fully, so for example to see all the system registers -accesses:: +counted. You can give a value to the `count` argument for a class of +instructions to break it down fully, so for example to see all the system +registers accesses:: ./aarch64-softmmu/qemu-system-aarch64 $(QEMU_ARGS) \ -append "root=/dev/sda2 systemd.unit=benchmark.service" \ - -smp 4 -plugin ./contrib/plugins/libhowvec.so,arg=sreg -d plugin + -smp 4 -plugin ./contrib/plugins/libhowvec.so,count=sreg -d plugin which will lead to a sorted list after the class breakdown::