From a64e45c2ea62d9622bcebb586f359ea95f0a5152 Mon Sep 17 00:00:00 2001 From: Thomas Richter Date: Thu, 12 Jan 2023 15:09:21 +0100 Subject: s390/cpum_sf: move functions from header file to source file Some inline helper functions are defined in a header file but used in only one source file. Move these functions to the source file. No functional change. Signed-off-by: Thomas Richter Acked-by: Heiko Carstens Signed-off-by: Heiko Carstens --- arch/s390/kernel/perf_cpum_sf.c | 52 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'arch/s390/kernel/perf_cpum_sf.c') diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index ce886a03545a..934a45c85dc4 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -22,6 +22,7 @@ #include #include #include +#include /* Minimum number of sample-data-block-tables: * At least one table is required for the sampling buffer structure. @@ -99,6 +100,57 @@ static DEFINE_PER_CPU(struct cpu_hw_sf, cpu_hw_sf); /* Debug feature */ static debug_info_t *sfdbg; +/* Sampling control helper functions */ +static inline unsigned long freq_to_sample_rate(struct hws_qsi_info_block *qsi, + unsigned long freq) +{ + return (USEC_PER_SEC / freq) * qsi->cpu_speed; +} + +static inline unsigned long sample_rate_to_freq(struct hws_qsi_info_block *qsi, + unsigned long rate) +{ + return USEC_PER_SEC * qsi->cpu_speed / rate; +} + +/* Return TOD timestamp contained in an trailer entry */ +static inline unsigned long long trailer_timestamp(struct hws_trailer_entry *te) +{ + /* TOD in STCKE format */ + if (te->header.t) + return *((unsigned long long *)&te->timestamp[1]); + + /* TOD in STCK format */ + return *((unsigned long long *)&te->timestamp[0]); +} + +/* Return pointer to trailer entry of an sample data block */ +static inline unsigned long *trailer_entry_ptr(unsigned long v) +{ + void *ret; + + ret = (void *)v; + ret += PAGE_SIZE; + ret -= sizeof(struct hws_trailer_entry); + + return (unsigned long *)ret; +} + +/* + * Return true if the entry in the sample data block table (sdbt) + * is a link to the next sdbt + */ +static inline int is_link_entry(unsigned long *s) +{ + return *s & 0x1UL ? 1 : 0; +} + +/* Return pointer to the linked sdbt */ +static inline unsigned long *get_next_sdbt(unsigned long *s) +{ + return (unsigned long *)(*s & ~0x1UL); +} + /* * sf_disable() - Switch off sampling facility */ -- cgit