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author | Mark Brown <broonie@kernel.org> | 2020-05-08 20:20:51 +0300 |
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committer | Mark Brown <broonie@kernel.org> | 2020-05-08 20:20:51 +0300 |
commit | c50ad6dbf6cc1d1671a3cd5618b3a52c495b78ca (patch) | |
tree | dddb8875cc95ce42f31032b3271263ea5a7640df /kernel/sched/isolation.c | |
parent | aab5fd7a1b7b931487694b527322f48f423701c7 (diff) | |
parent | 60ab7f4153b6af461c90d572c31104086b44639f (diff) | |
download | linux-c50ad6dbf6cc1d1671a3cd5618b3a52c495b78ca.tar.xz |
Merge tag 'linear-ranges-lib' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator into regulator-5.8
lib: Add linear ranges helper library and start using it
Series extracts a "linear ranges" helper out of the regulator
framework. Linear ranges helper is intended to help converting
real-world values to register values when conversion is linear. I
suspect this is useful also for power subsystem and possibly for clk.
Diffstat (limited to 'kernel/sched/isolation.c')
-rw-r--r-- | kernel/sched/isolation.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c index 008d6ac2342b..808244f3ddd9 100644 --- a/kernel/sched/isolation.c +++ b/kernel/sched/isolation.c @@ -149,6 +149,9 @@ __setup("nohz_full=", housekeeping_nohz_full_setup); static int __init housekeeping_isolcpus_setup(char *str) { unsigned int flags = 0; + bool illegal = false; + char *par; + int len; while (isalpha(*str)) { if (!strncmp(str, "nohz,", 5)) { @@ -169,8 +172,22 @@ static int __init housekeeping_isolcpus_setup(char *str) continue; } - pr_warn("isolcpus: Error, unknown flag\n"); - return 0; + /* + * Skip unknown sub-parameter and validate that it is not + * containing an invalid character. + */ + for (par = str, len = 0; *str && *str != ','; str++, len++) { + if (!isalpha(*str) && *str != '_') + illegal = true; + } + + if (illegal) { + pr_warn("isolcpus: Invalid flag %.*s\n", len, par); + return 0; + } + + pr_info("isolcpus: Skipped unknown flag %.*s\n", len, par); + str++; } /* Default behaviour for isolcpus without flags */ |