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| author | Rasmus Villemoes <linux@rasmusvillemoes.dk> | 2025-08-26 08:17:05 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-09-04 11:23:49 +0200 |
| commit | 39f1ee1299c9bab9c87dc3087b9f82f346b8190b (patch) | |
| tree | 3ef34943c19f66dcd6a31b33ceb82edad0b35c90 /arch/arm/kernel | |
| parent | 7c0c01a216e6d9e1d169c0f6f3b5522e6da708ed (diff) | |
| download | linux-next-39f1ee1299c9bab9c87dc3087b9f82f346b8190b.tar.gz linux-next-39f1ee1299c9bab9c87dc3087b9f82f346b8190b.zip | |
ARM: VDSO: Remove cntvct_ok global variable
The cntvct_ok variable has not had any external user since commit
c7a18100bdff ("lib/vdso: Avoid highres update if clocksource is not
VDSO capable").
It also only has one user in vdso.c, once during init, so rather than
having the caller of patch_vdso() initialize cntvct_ok, just call
cntvct_functional() directly and avoid the global variable entirely.
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Link: https://lore.kernel.org/all/20250826-vdso-cleanups-v1-2-d9b65750e49f@linutronix.de
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/vdso.c | 10 |
1 files changed, 3 insertions, 7 deletions
diff --git a/arch/arm/kernel/vdso.c b/arch/arm/kernel/vdso.c index 325448ffbba0..e38a30477f3d 100644 --- a/arch/arm/kernel/vdso.c +++ b/arch/arm/kernel/vdso.c @@ -54,11 +54,9 @@ struct elfinfo { char *dynstr; /* ptr to .dynstr section */ }; -/* Cached result of boot-time check for whether the arch timer exists, - * and if so, whether the virtual counter is useable. +/* Boot-time check for whether the arch timer exists, and if so, + * whether the virtual counter is usable. */ -bool cntvct_ok __ro_after_init; - static bool __init cntvct_functional(void) { struct device_node *np; @@ -159,7 +157,7 @@ static void __init patch_vdso(void *ehdr) * want programs to incur the slight additional overhead of * dispatching through the VDSO only to fall back to syscalls. */ - if (!cntvct_ok) { + if (!cntvct_functional()) { vdso_nullpatch_one(&einfo, "__vdso_gettimeofday"); vdso_nullpatch_one(&einfo, "__vdso_clock_gettime"); vdso_nullpatch_one(&einfo, "__vdso_clock_gettime64"); @@ -197,8 +195,6 @@ static int __init vdso_init(void) vdso_total_pages = VDSO_NR_PAGES; /* for the data/vvar pages */ vdso_total_pages += text_pages; - cntvct_ok = cntvct_functional(); - patch_vdso(vdso_start); return 0; |