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qemu-patch-raspberry4
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plugins/hotpages: introduce sortby arg and parsed bool args correctly 

Since plugin arguments now expect boolean arguments, a plugin argument
name "sortby" now expects a value of "read", "write", or "address".

"io" arg is now expected to be passed as a full-form boolean parameter,
i.e. "io=on|true|yes|off|false|no"

Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210730135817.17816-4-ma.mandourr@gmail.com>
staging
Mahmoud Mandour 2021-07-30 15:58:07 +02:00 committed by Alex Bennée
parent 6a9e8a086d
commit f698d5ef1c
2 changed files with 35 additions and 10 deletions
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30
contrib/plugins/hotpages.c
View File

@ -169,16 +169,26 @@ int qemu_plugin_install(qemu_plugin_id_t id, const qemu_info_t *info,
for (i = 0; i < argc; i++) {
char *opt = argv[i];
if (g_strcmp0(opt, "reads") == 0) {
sort_by = SORT_R;
} else if (g_strcmp0(opt, "writes") == 0) {
sort_by = SORT_W;
} else if (g_strcmp0(opt, "address") == 0) {
sort_by = SORT_A;
} else if (g_strcmp0(opt, "io") == 0) {
track_io = true;
} else if (g_str_has_prefix(opt, "pagesize=")) {
page_size = g_ascii_strtoull(opt + 9, NULL, 10);
g_autofree char **tokens = g_strsplit(opt, "=", -1);
if (g_strcmp0(tokens[0], "sortby") == 0) {
if (g_strcmp0(tokens[1], "reads") == 0) {
sort_by = SORT_R;
} else if (g_strcmp0(tokens[1], "writes") == 0) {
sort_by = SORT_W;
} else if (g_strcmp0(tokens[1], "address") == 0) {
sort_by = SORT_A;
} else {
fprintf(stderr, "invalid value to sortby: %s\n", tokens[1]);
return -1;
}
} else if (g_strcmp0(tokens[0], "io") == 0) {
if (!qemu_plugin_bool_parse(tokens[0], tokens[1], &track_io)) {
fprintf(stderr, "boolean argument parsing failed: %s\n", opt);
return -1;
}
} else if (g_strcmp0(tokens[0], "pagesize") == 0) {
page_size = g_ascii_strtoull(tokens[1], NULL, 10);
} else {
fprintf(stderr, "option parsing failed: %s\n", opt);
return -1;

15
docs/devel/tcg-plugins.rst
View File

@ -193,6 +193,21 @@ Similar to hotblocks but this time tracks memory accesses::
0x0000000048b000, 0x0001, 130594, 0x0001, 355
0x0000000048a000, 0x0001, 1826, 0x0001, 11
The hotpages plugin can be configured using the following arguments:
* sortby=reads|writes|address
Log the data sorted by either the number of reads, the number of writes, or
memory address. (Default: entries are sorted by the sum of reads and writes)
* io=on
Track IO addresses. Only relevant to full system emulation. (Default: off)
* pagesize=N
The page size used. (Default: N = 4096)
- contrib/plugins/howvec.c
This is an instruction classifier so can be used to count different