Extend the syntax parsed by make_cpuset() so that "a" or "all" is
an alias for all CPUs in the system.
Signed-off-by: Petr Tesarik <ptesarik@xxxxxxx>
---
help.c | 3 ++-
tools.c | 20 +++++++++++++-------
2 files changed, 15 insertions(+), 8 deletions(-)
[PATCH 5/11] Recognize "a" and "all" as CPU specifiers
Extend the syntax parsed by make_cpuset() so that "a" or "all" is
an alias for all CPUs in the system.
Signed-off-by: Petr Tesarik <ptesarik@xxxxxxx>
---
help.c | 3 ++-
tools.c | 20 +++++++++++++-------
2 files changed, 15 insertions(+), 8 deletions(-)
--- a/tools.c
+++ b/tools.c
@@ -5518,14 +5518,20 @@ make_cpumask(char *s, ulong *mask, int f
p = strtok(s, ",");
while (p) {
s = strtok(NULL, "");
- start = end = -1;
- q = strtok(p, "-");
- start = dtoi(q, flags, errptr);
- if ((q = strtok(NULL, "-")))
- end = dtoi(q, flags, errptr);
- if (end == -1)
- end = start;
+ if (STREQ(p, "a") || STREQ(p, "all")) {
+ start = 0;
+ end = kt->cpus - 1;
+ } else {
+ start = end = -1;
+ q = strtok(p, "-");
+ start = dtoi(q, flags, errptr);
+ if ((q = strtok(NULL, "-")))
+ end = dtoi(q, flags, errptr);
+
+ if (end == -1)
+ end = start;
+ }
for (i = start; i <= end; i++)
SET_BIT(mask, i);
--- a/help.c
+++ b/help.c
@@ -1089,6 +1089,7 @@ char *help_p[] = {
" expression The expression to be evaluated.",
" cpuspec CPU specification for per-cpu variables:",
" : CPU of the currently selected task.",
+" :a[ll] all CPUs.",
" :#[-#][,...] CPU list(s), e.g. \"1,3,5\", \"1-3\",",
" or \"1,3,5-7,10\".",
" -x override default output format with hexadecimal format.",
@@ -2852,7 +2853,7 @@ char *help_irq[] = {
" irq stats of all cpus will be displayed.",
" -c cpu only usable with the -s option, dump the irq stats of the ",
" specified cpu[s]; cpu can be specified as \"1,3,5\", \"1-3\",",
-" or \"1,3,5-7,10\".",
+" \"1,3,5-7,10\", \"all\", or \"a\" (shortcut for \"all\").",
"\nEXAMPLES",
" Display the relevant data for IRQ 18 from a pre-2.6.37 kernel:\n",
" %s> irq 18",
--
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