#define _GNU_SOURCE #include #include #include #include #include #include #include "proc.h" #include "die.h" void cpu_affinity(int cpu) { int ret; cpu_set_t cpu_bitmask; CPU_ZERO(&cpu_bitmask); CPU_SET(cpu, &cpu_bitmask); ret = sched_setaffinity(getpid(), sizeof(cpu_bitmask), &cpu_bitmask); if (ret) panic("Can't set this cpu affinity!\n"); } int set_proc_prio(int priority) { int ret = setpriority(PRIO_PROCESS, getpid(), priority); if (ret) panic("Can't set nice val to %i!\n", priority); return 0; } int set_sched_status(int policy, int priority) { int ret, min_prio, max_prio; struct sched_param sp; max_prio = sched_get_priority_max(policy); min_prio = sched_get_priority_min(policy); if (max_prio == -1 || min_prio == -1) printf("Cannot determine scheduler prio limits!\n"); else if (priority < min_prio) priority = min_prio; else if (priority > max_prio) priority = max_prio; memset(&sp, 0, sizeof(sp)); sp.sched_priority = priority; ret = sched_setscheduler(getpid(), policy, &sp); if (ret) { printf("Cannot set scheduler policy!\n"); return -EINVAL; } ret = sched_setparam(getpid(), &sp); if (ret) { printf("Cannot set scheduler prio!\n"); return -EINVAL; } return 0; } ssize_t proc_get_cmdline(unsigned int pid, char *cmdline, size_t len) { ssize_t ret; char path[1024]; snprintf(path, sizeof(path), "/proc/%u/exe", pid); ret = readlink(path, cmdline, len - 1); if (ret < 0) cmdline[0] = '\0'; else cmdline[ret] = '\0'; return ret; } it.cgi/linux/net-next.git/?h=nds-private-remove'>summaryrefslogtreecommitdiff
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authorMaciej S. Szmigiero <mail@maciej.szmigiero.name>2016-01-18 20:07:44 +0100
committerMark Brown <broonie@kernel.org>2016-02-22 12:02:47 +0900
commit6139b1b184d5f6257f692dc814dbcd47e4cf90f1 (patch)
tree395e6ecae72279ff8e7d3455b225ae4a56575455 /Documentation/i2c
parent99777b07efe3b533b4b6c67e59ad9138607c0467 (diff)
ASoC: fsl_ssi: remove explicit register defaults
There is no guarantee that on fsl_ssi module load SSI registers will have their power-on-reset values. In fact, if the driver is reloaded the values in registers will be whatever they were set to previously. However, the cache needs to be fully populated at probe time to avoid non-atomic allocations during register access. Special case here is imx21-class SSI, since according to datasheet it don't have SACC{ST,EN,DIS} regs. This fixes hard lockup on fsl_ssi module reload, at least in AC'97 mode. Fixes: 05cf237972fe ("ASoC: fsl_ssi: Add driver suspend and resume to support MEGA Fast") Signed-off-by: Maciej S. Szmigiero <mail@maciej.szmigiero.name> Tested-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/i2c')