Parsing boolean arguments correctly (e.g. pattern=on or source=false). Introduced a new "track" argument that takes a [read|write] value. This substitutes passing read or write to "arg=" that is deprecated.
Also, matches are now taken one by one through the "match" argument. Signed-off-by: Mahmoud Mandour <ma.mando...@gmail.com> --- contrib/plugins/hwprofile.c | 39 +++++++++++++++++++++++++------------ docs/devel/tcg-plugins.rst | 8 ++++---- 2 files changed, 31 insertions(+), 16 deletions(-) diff --git a/contrib/plugins/hwprofile.c b/contrib/plugins/hwprofile.c index faf216ac00..691d4edb0c 100644 --- a/contrib/plugins/hwprofile.c +++ b/contrib/plugins/hwprofile.c @@ -259,27 +259,42 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info, int argc, char **argv) { int i; + g_autoptr(GString) matches_raw = g_string_new(""); for (i = 0; i < argc; i++) { char *opt = argv[i]; - if (g_strcmp0(opt, "read") == 0) { - rw = QEMU_PLUGIN_MEM_R; - } else if (g_strcmp0(opt, "write") == 0) { - rw = QEMU_PLUGIN_MEM_W; - } else if (g_strcmp0(opt, "pattern") == 0) { - pattern = true; - } else if (g_strcmp0(opt, "source") == 0) { - source = true; - } else if (g_str_has_prefix(opt, "match")) { - gchar **parts = g_strsplit(opt, "=", 2); + g_autofree char **tokens = g_strsplit(opt, "=", 2); + + if (g_strcmp0(tokens[0], "track") == 0) { + if (g_strcmp0(tokens[1], "read") == 0) { + rw = QEMU_PLUGIN_MEM_R; + } else if (g_strcmp0(tokens[1], "write") == 0) { + rw = QEMU_PLUGIN_MEM_W; + } else { + fprintf(stderr, "invalid value for track: %s\n", tokens[1]); + return -1; + } + } else if (g_strcmp0(tokens[0], "pattern") == 0) { + if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &pattern)) { + fprintf(stderr, "boolean argument parsing failed: %s\n", opt); + return -1; + } + } else if (g_strcmp0(tokens[0], "source") == 0) { + if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &source)) { + fprintf(stderr, "boolean argument parsing failed: %s\n", opt); + return -1; + } + } else if (g_strcmp0(tokens[0], "match") == 0) { check_match = true; - matches = g_strsplit(parts[1], ",", -1); - g_strfreev(parts); + g_string_append_printf(matches_raw, "%s,", tokens[1]); } else { fprintf(stderr, "option parsing failed: %s\n", opt); return -1; } } + if (check_match) { + matches = g_strsplit(matches_raw->str, ",", -1); + } if (source && pattern) { fprintf(stderr, "can only currently track either source or pattern.\n"); diff --git a/docs/devel/tcg-plugins.rst b/docs/devel/tcg-plugins.rst index 6ddf9c28c0..753f56ac42 100644 --- a/docs/devel/tcg-plugins.rst +++ b/docs/devel/tcg-plugins.rst @@ -290,22 +290,22 @@ which will eventually report:: The hwprofile tool can only be used with system emulation and allows the user to see what hardware is accessed how often. It has a number of options: - * arg=read or arg=write + * track=read or track=write By default the plugin tracks both reads and writes. You can use one of these options to limit the tracking to just one class of accesses. - * arg=source + * source Will include a detailed break down of what the guest PC that made the - access was. Not compatible with arg=pattern. Example output:: + access was. Not compatible with the pattern option. Example output:: cirrus-low-memory @ 0xfffffd00000a0000 pc:fffffc0000005cdc, 1, 256 pc:fffffc0000005ce8, 1, 256 pc:fffffc0000005cec, 1, 256 - * arg=pattern + * pattern Instead break down the accesses based on the offset into the HW region. This can be useful for seeing the most used registers of a -- 2.25.1